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The document defines key terms related to computer networks and the internet. It describes how the ARPANET was developed by ARPA and was a precursor to the modern internet. It also defines different types of email bounces, computer spam, the differences between the internet and intranets, POP protocol, phishing, encryption/decryption, netiquette guidelines, and how routers function to forward data packets between connected networks.
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slideshow 2
The document discusses several key internet and networking concepts:
1. ARPANET was developed by the US Department of Defense during the Cold War and was the first packet switching network, paving the way for the modern internet.
2. Hard bounces occur when an email fails to send due to a permanent issue like an invalid address, while soft bounces happen when a recipient's inbox is full.
3. Spam refers to unsolicited bulk messages sent indiscriminately through electronic systems, often for marketing purposes.
Electronic Communication 2
The document discusses several topics related to computer networking and internet technology:
1) The ARPANET was the world's first operational packet switching network and predecessor to the modern internet, developed by the US Department of Defense during the Cold War.
2) A hard bounce occurs when an email address is invalid, while a soft bounce happens when an email reaches the recipient's server but not their inbox, such as due to a full inbox.
3) Netiquette refers to guidelines for polite and appropriate online behavior when posting messages or participating in discussions.
Electronic Communications 2
ARPANET was the world's first operational packet switching network and predecessor to the global internet, developed by the US Department of Defense's Advanced Research Projects Agency during the Cold War. A hard bounce occurs when an email fails to be delivered due to a permanent issue like an invalid address, while a soft bounce happens when the message reaches the recipient's server but bounces back before delivery, possibly due to a full inbox. An intranet is a private computer network within an organization that uses firewalls, while the internet connects computer networks globally.
Electronic Communication 2a
The document discusses key concepts related to electronic communication and computer networks:
1) ARPANET was developed by the US Department of Defense during the Cold War as one of the first wide-area networks and predecessors to the modern Internet.
2) Spam is unsolicited junk email that is difficult for users to delete, so many email services provide junk folders to filter spam from the inbox.
3) Encryption is the process of encoding data into an unreadable format, while decryption converts the encrypted code back into plain text, requiring a secret key or password.
Com Slideshow 2
ARPANET was the world's first operational packet switching network developed by the US Department of Defense during the Cold War and was the predecessor to the internet. A hard bounce occurs when an email fails delivery due to a permanent issue like an invalid address, while a soft bounce happens when an email reaches the recipient's server but bounces back before delivery, such as due to a full mailbox. Spam refers to unsolicited commercial email messages.
(3 9 09) Electronic Communication Investigate, Slideshare Slideshow
ARPANET was the world's first operational packet switching network and predecessor to the global Internet. Hard bounces occur when emails are permanently undeliverable, while soft bounces happen when emails reach the recipient's server but bounce before delivery. Computer spam refers to junk emails or newsgroup posts, some containing viruses. The Internet connects millions of global computers, while an intranet is a private network within an organization only accessible to members. POP retrieves email from servers, phishing involves scam emails pretending to be legitimate, and encryption involves encoding data while decryption decodes encrypted data. Netiquette refers to proper online behavior which affects one's reputation, and routers forward data packets between networks.
Electronic Communication Investigate
The document discusses several key concepts in electronic communication including ARPANET which was developed to create a communications system, the differences between soft and hard email bounces, what spam is and how it can sometimes carry viruses. It also defines the differences between the internet and intranets, what POP is and how it is used to retrieve email. Additionally, it covers phishing, encryption and decryption, netiquette, what routers are and their importance for connecting to the internet and personal networks.
Arpanet
A hard bounce occurs when an email is permanently undeliverable, such as to a nonexistent address. A soft bounce happens when an email reaches the recipient's server but cannot be delivered to their inbox, perhaps due to it being full. Spam is unsolicited junk mail. An intranet is a private network within a firewall that connects organizational computers, whereas the internet connects networks globally.
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slideshow 2
The document discusses several key internet and networking concepts:
1. ARPANET was developed by the US Department of Defense during the Cold War and was the first packet switching network, paving the way for the modern internet.
2. Hard bounces occur when an email fails to send due to a permanent issue like an invalid address, while soft bounces happen when a recipient's inbox is full.
3. Spam refers to unsolicited bulk messages sent indiscriminately through electronic systems, often for marketing purposes.
Electronic Communication 2
The document discusses several topics related to computer networking and internet technology:
1) The ARPANET was the world's first operational packet switching network and predecessor to the modern internet, developed by the US Department of Defense during the Cold War.
2) A hard bounce occurs when an email address is invalid, while a soft bounce happens when an email reaches the recipient's server but not their inbox, such as due to a full inbox.
3) Netiquette refers to guidelines for polite and appropriate online behavior when posting messages or participating in discussions.
Electronic Communications 2
ARPANET was the world's first operational packet switching network and predecessor to the global internet, developed by the US Department of Defense's Advanced Research Projects Agency during the Cold War. A hard bounce occurs when an email fails to be delivered due to a permanent issue like an invalid address, while a soft bounce happens when the message reaches the recipient's server but bounces back before delivery, possibly due to a full inbox. An intranet is a private computer network within an organization that uses firewalls, while the internet connects computer networks globally.
Electronic Communication 2a
The document discusses key concepts related to electronic communication and computer networks:
1) ARPANET was developed by the US Department of Defense during the Cold War as one of the first wide-area networks and predecessors to the modern Internet.
2) Spam is unsolicited junk email that is difficult for users to delete, so many email services provide junk folders to filter spam from the inbox.
3) Encryption is the process of encoding data into an unreadable format, while decryption converts the encrypted code back into plain text, requiring a secret key or password.
Com Slideshow 2
ARPANET was the world's first operational packet switching network developed by the US Department of Defense during the Cold War and was the predecessor to the internet. A hard bounce occurs when an email fails delivery due to a permanent issue like an invalid address, while a soft bounce happens when an email reaches the recipient's server but bounces back before delivery, such as due to a full mailbox. Spam refers to unsolicited commercial email messages.
(3 9 09) Electronic Communication Investigate, Slideshare Slideshow
ARPANET was the world's first operational packet switching network and predecessor to the global Internet. Hard bounces occur when emails are permanently undeliverable, while soft bounces happen when emails reach the recipient's server but bounce before delivery. Computer spam refers to junk emails or newsgroup posts, some containing viruses. The Internet connects millions of global computers, while an intranet is a private network within an organization only accessible to members. POP retrieves email from servers, phishing involves scam emails pretending to be legitimate, and encryption involves encoding data while decryption decodes encrypted data. Netiquette refers to proper online behavior which affects one's reputation, and routers forward data packets between networks.
Electronic Communication Investigate
The document discusses several key concepts in electronic communication including ARPANET which was developed to create a communications system, the differences between soft and hard email bounces, what spam is and how it can sometimes carry viruses. It also defines the differences between the internet and intranets, what POP is and how it is used to retrieve email. Additionally, it covers phishing, encryption and decryption, netiquette, what routers are and their importance for connecting to the internet and personal networks.
Arpanet
A hard bounce occurs when an email is permanently undeliverable, such as to a nonexistent address. A soft bounce happens when an email reaches the recipient's server but cannot be delivered to their inbox, perhaps due to it being full. Spam is unsolicited junk mail. An intranet is a private network within a firewall that connects organizational computers, whereas the internet connects networks globally.
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This document provides an overview of the Rutgers University Computing Services Introduction to the Internet presentation. It discusses what the Internet is, why people use it, and how to connect and use basic Internet tools like email and the World Wide Web. The summary includes 3 key points:
1) The Internet is a worldwide network of networks that began as a Defense Department experiment over 25 years ago and now has an estimated 105 million host computers.
2) To connect, you need a personal computer, communications software, modem, phone line, and Internet provider. Common Internet tools covered include email, listservs, FTP, telnet, and web browsers.
3) The presentation explains how to use these basic Internet applications and resources
An Introduction to Internet
The document discusses the origins and development of the Internet. It began in 1960 when DARPA funded research into connecting computers to exchange data even if connections failed. This led to the creation of ARPANET in 1969, connecting four military research centers. By the 1990s, the introduction of the World Wide Web transformed the Internet. The document also outlines how individuals and organizations in India access the Internet through various ISPs and technologies. It provides an overview of key Internet terms and protocols.
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This document discusses key concepts related to the internet and web browsing. It defines the internet as a global system of interconnected computer networks that uses standard protocols to serve billions of users. It then outlines five common uses of the internet, including communication, information retrieval, entertainment, online shopping, and business transactions. Finally, it lists the basic requirements needed to access the internet, such as a computer, modem, internet connection, internet service provider, and web browser.
Internet and intranet
The document defines and compares intranets, extranets, and the internet. An intranet allows restricted access within an organization, an extranet expands access to authorized outsiders like suppliers, and the internet provides open access worldwide. It also defines VPNs as using public networks like the internet to connect private networks, and VLANs as logical groupings of devices that appear on the same network despite geographical distribution. The key differences are levels of access and size of the network.
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The document provides an overview of the origins and development of the Internet. It discusses how the Internet began with ARPANET in the late 1960s and grew exponentially in the 1980s with the rise of personal computers and email. It describes the basic infrastructure of the Internet including hardware layers, protocol stacks, packets, IP addresses, Internet service providers, and the domain name system. It also gives examples of how individuals and businesses use the Internet for communication, entertainment, education, and e-commerce. The key advantages of the Internet are its global reach, low cost, 24/7 accessibility, technical support, and online discussion forums.
Introduction to Internet
The document provides an introduction and history of the Internet. It began as the ARPANET project in 1969 by the US Department of Defense. By 2010, it was estimated that about 80% of the planet would be connected to the Internet. The document also defines common Internet terms and protocols like SMTP, POP, and IMAP for email and defines narrow and broadband connections. It discusses issues like spam, scams, viruses, worms, and Trojan horses that can affect Internet users.
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The document provides an introduction to the Internet, describing its origins from ARPANET and how it functions as a network of interconnected computer networks that allows users to access data remotely. It discusses that the Internet relies on protocols like TCP/IP to allow different systems to communicate and that no single organization owns or governs the Internet, with responsibilities divided among groups that set standards, discuss technical issues, and provide registration services. It also outlines some basic requirements to connect to the Internet like a modem, ISP, and special programs to control communication of data over hardware components.
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Arpanet
The document defines and describes several key computer networking terms: hard bounces occur when an email is returned due to an invalid address, while soft bounces are emails returned after delivery; computer spam involves mass emailing unsolicited messages to promote products; intranets run faster than the internet but within a single environment; POP is an application layer protocol for email retrieval; phishing aims to steal user information through deception; encryption scrambles messages during transmission and decryption unscrambles them; netiquette outlines proper online conduct; and routers connect computers to the wider internet.
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[1] Data communication is the process of transmitting digital data between two or more points. It allows users to share information and resources over computer networks.
[2] A terminal is a device that ends a telecommunication link and is the point where a signal enters or leaves a network.
[3] The advantages of computer networks include sharing devices, files, data, information, high-speed internet connections, accessing centralized databases, and better communication using internet services like email.
Difference Between Intranet And Extranet
An intranet refers to a private network within an organization that connects computers and offices using non-public network links, with firewall protection. An extranet extends an organization's intranet to external users via the public internet. A leased line is a private telecommunications connection between two locations that a provider delivers for a monthly fee. SMTP and POP are protocols for sending and retrieving email over the internet. HTML uses tags for markup while XML requires complete tagging and is more structured.
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ARPANET was the world's first operational packet switching network and predecessor to the Internet, developed by ARPA during the Cold War. A soft bounce occurs when an email reaches the recipient's server but bounces before delivery, while a hard bounce means the message is permanently undeliverable. Computer spam refers to annoying messages or ads that flood computers when accessing the internet or using email. An intranet is a private network, protected by passwords and only accessible to authorized users like employees, whereas the Internet is a public space.
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Anoop vijayan
Anoop Vijayan V is a network engineer with over 2 years of experience in Cisco networking. He is looking for a new career opportunity with a major corporation to further develop his project management, technical, and people skills. He has extensive experience designing, implementing, configuring, and troubleshooting networks using Cisco devices and protocols like RIP, EIGRP, OSPF, VLANs, and IP addressing. He holds a CCNA certification and has undergone CCNP training.
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The document discusses the history and technology of the Internet and World Wide Web. It describes how the Internet evolved from early networks like ARPANET and how protocols like TCP/IP and HTML allowed the Web to develop. It explains common Internet connection types and standards like IP addressing, domain names, and markup languages that made the digital sharing of information possible on a global scale.
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This document provides an overview of the internet including its origins, development, infrastructure, protocols, addresses, connections, uses and advantages. It originated from the US Department of Defense's Advanced Research Project Agency (ARPA) and early networks included ARPANET which allowed researchers to share computer power and ideas. The introduction of personal computers and email led to exponential growth of internet use in the 1980s. The document describes how internet protocol stacks and packets work, where addresses come from, how to connect through an internet service provider, domain names, internet explorer and advantages like a global audience and low cost.
Human: Thank you for the summary. Can you provide a shorter summary in 2 sentences or less?
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This slide is about basic information of internet. How it works!. Moreover, common internet services along advantages and disadvantages.
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This document provides an overview of the Rutgers University Computing Services Introduction to the Internet presentation. It discusses what the Internet is, why people use it, and how to connect and use basic Internet tools like email and the World Wide Web. The summary includes 3 key points:
1) The Internet is a worldwide network of networks that began as a Defense Department experiment over 25 years ago and now has an estimated 105 million host computers.
2) To connect, you need a personal computer, communications software, modem, phone line, and Internet provider. Common Internet tools covered include email, listservs, FTP, telnet, and web browsers.
3) The presentation explains how to use these basic Internet applications and resources
An Introduction to Internet
The document discusses the origins and development of the Internet. It began in 1960 when DARPA funded research into connecting computers to exchange data even if connections failed. This led to the creation of ARPANET in 1969, connecting four military research centers. By the 1990s, the introduction of the World Wide Web transformed the Internet. The document also outlines how individuals and organizations in India access the Internet through various ISPs and technologies. It provides an overview of key Internet terms and protocols.
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This document discusses key concepts related to the internet and web browsing. It defines the internet as a global system of interconnected computer networks that uses standard protocols to serve billions of users. It then outlines five common uses of the internet, including communication, information retrieval, entertainment, online shopping, and business transactions. Finally, it lists the basic requirements needed to access the internet, such as a computer, modem, internet connection, internet service provider, and web browser.
Internet and intranet
The document defines and compares intranets, extranets, and the internet. An intranet allows restricted access within an organization, an extranet expands access to authorized outsiders like suppliers, and the internet provides open access worldwide. It also defines VPNs as using public networks like the internet to connect private networks, and VLANs as logical groupings of devices that appear on the same network despite geographical distribution. The key differences are levels of access and size of the network.
Internet
The document provides an overview of the origins and development of the Internet. It discusses how the Internet began with ARPANET in the late 1960s and grew exponentially in the 1980s with the rise of personal computers and email. It describes the basic infrastructure of the Internet including hardware layers, protocol stacks, packets, IP addresses, Internet service providers, and the domain name system. It also gives examples of how individuals and businesses use the Internet for communication, entertainment, education, and e-commerce. The key advantages of the Internet are its global reach, low cost, 24/7 accessibility, technical support, and online discussion forums.
Introduction to Internet
The document provides an introduction and history of the Internet. It began as the ARPANET project in 1969 by the US Department of Defense. By 2010, it was estimated that about 80% of the planet would be connected to the Internet. The document also defines common Internet terms and protocols like SMTP, POP, and IMAP for email and defines narrow and broadband connections. It discusses issues like spam, scams, viruses, worms, and Trojan horses that can affect Internet users.
Introduction to internet
The document provides an introduction to the Internet, describing its origins from ARPANET and how it functions as a network of interconnected computer networks that allows users to access data remotely. It discusses that the Internet relies on protocols like TCP/IP to allow different systems to communicate and that no single organization owns or governs the Internet, with responsibilities divided among groups that set standards, discuss technical issues, and provide registration services. It also outlines some basic requirements to connect to the Internet like a modem, ISP, and special programs to control communication of data over hardware components.
Pervasive nation
This document describes Pervasive Nation, a large-scale Internet of Things network based on LoRa technology. It provides an overview of the network infrastructure, including sensors, gateways, backend servers, and data storage. It then discusses potential ways to utilize and interact with the network, such as gathering sensor data, integrating own networks and backends, or developing new gateway and backend solutions. The goal is to establish an open ecosystem for networking and communications research using a national testbed network.
Network and internet fundamental
This document discusses networks, the Internet, and related topics. It defines a network as a set of connected devices that share resources and communicate through various media. The largest network is the Internet, which uses TCP/IP protocols and packet switching to transmit data over diverse communication systems on a global scale. The document also describes intranets, which are private internal networks, and extranets, which allow controlled external access. Key terms like Memex, Shannon's information theory, and the invention of the silicon chip provide historical context.
Arpanet
The document defines and describes several key computer networking terms: hard bounces occur when an email is returned due to an invalid address, while soft bounces are emails returned after delivery; computer spam involves mass emailing unsolicited messages to promote products; intranets run faster than the internet but within a single environment; POP is an application layer protocol for email retrieval; phishing aims to steal user information through deception; encryption scrambles messages during transmission and decryption unscrambles them; netiquette outlines proper online conduct; and routers connect computers to the wider internet.
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Networking, Data Communication & Computer Networks
[1] Data communication is the process of transmitting digital data between two or more points. It allows users to share information and resources over computer networks.
[2] A terminal is a device that ends a telecommunication link and is the point where a signal enters or leaves a network.
[3] The advantages of computer networks include sharing devices, files, data, information, high-speed internet connections, accessing centralized databases, and better communication using internet services like email.
Difference Between Intranet And Extranet
An intranet refers to a private network within an organization that connects computers and offices using non-public network links, with firewall protection. An extranet extends an organization's intranet to external users via the public internet. A leased line is a private telecommunications connection between two locations that a provider delivers for a monthly fee. SMTP and POP are protocols for sending and retrieving email over the internet. HTML uses tags for markup while XML requires complete tagging and is more structured.
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This document discusses privacy and security issues in the digital age. It references a song about sex, drugs, and rock and roll to introduce the topic of codes and their various meanings. The document then provides definitions of the word "code" and discusses challenges around regulating data collection, cybersecurity, and hacking online. It examines current US laws and proposed bills related to these issues and debates how to define key concepts like personally identifiable information and innocent versus malicious online activities.
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ARPANET was the world's first operational packet switching network and predecessor to the Internet, developed by ARPA during the Cold War. A soft bounce occurs when an email reaches the recipient's server but bounces before delivery, while a hard bounce means the message is permanently undeliverable. Computer spam refers to annoying messages or ads that flood computers when accessing the internet or using email. An intranet is a private network, protected by passwords and only accessible to authorized users like employees, whereas the Internet is a public space.
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The document provides an overview of the internet and its key components. It discusses that the internet is a global communication infrastructure consisting of links like cables and fibers, network devices like computers and routers, and software. It also explains that TCP/IP is the fundamental communication protocol that allows all these devices to communicate over the internet and defines rules for how data is packetized and transmitted between devices.
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The document discusses the history and technology of the Internet and World Wide Web. It describes how the Internet evolved from early networks like ARPANET and how protocols like TCP/IP and HTML allowed the Web to develop. It explains common Internet connection types and standards like IP addressing, domain names, and markup languages that made the digital sharing of information possible on a global scale.
Krishna
This document provides an overview of the internet including its origins, development, infrastructure, protocols, addresses, connections, uses and advantages. It originated from the US Department of Defense's Advanced Research Project Agency (ARPA) and early networks included ARPANET which allowed researchers to share computer power and ideas. The introduction of personal computers and email led to exponential growth of internet use in the 1980s. The document describes how internet protocol stacks and packets work, where addresses come from, how to connect through an internet service provider, domain names, internet explorer and advantages like a global audience and low cost.
Human: Thank you for the summary. Can you provide a shorter summary in 2 sentences or less?
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The document discusses several network protocols used at different layers of the OSI model. It introduces NetBIOS/NetBEUI which provides name registration and connection-oriented/connectionless communication over LANs. TCP/IP is described as a layered protocol suite used widely on the internet, with IP, TCP, UDP operating at the network and transport layers. ARP and RARP are discussed as protocols that resolve logical to physical addresses. ICMP and IGMP are control protocols that provide error reporting and multicast group management. IPX/SPX is presented as an alternative to TCP/IP used in Novell networks. HDLC and SDLC are synchronous data link protocols used for communication over WAN links.
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This document provides instructions for configuring a network topology in Packet Tracer using 3 routers and 3 switches. It describes connecting the routers and switches with cables and configuring the IP addresses and default gateways for 6 PCs connected to the routers. It also includes directions for connecting the routers together with fiber cables and configuring RIP routing between the routers to establish communication between all devices on the 3 subnetworks.
Internet History
This presentation, designed for a high school communications skills class, outlines the development of the internet.
Distributed database
A distributed database is a collection of logically interrelated databases distributed over a computer network. A distributed database management system (DDBMS) manages the distributed database and makes the distribution transparent to users. There are two main types of DDBMS - homogeneous and heterogeneous. Key characteristics of distributed databases include replication of fragments, shared logically related data across sites, and each site being controlled by a DBMS. Challenges include complex management, security, and increased storage requirements due to data replication.
The History Of The Internet Presentation
The document provides a history of the internet, beginning with its precursors in the 19th century including the telegraph. It describes the development of ARPANET in the 1960s as the first operational network and precursor to the modern internet. The introduction of the World Wide Web in the 1990s, including the creation of browsers and hyperlinks, helped popularize the internet. The internet then exploded in usage between 1994 and 2000 with the founding of key sites like Amazon and growth of commercial internet access. The future of the internet may involve networks like Internet II to support educational and research needs.
Packet Tracer Tutorial # 1
The document provides instructions for setting up a network with 4 PCs connected to 2 switches, with the switches connected to a router. The key steps are:
1. Connect the PCs to the switches using copper cables and assign each PC an IP address from the same private IP range (e.g. 192.168.0.x).
2. Connect the switches to the router using copper cables. Configure the router interfaces with IP addresses from each private range and enable the ports.
3. Configure the default gateway of each PC to be the router IP that corresponds to its private IP range.
4. Add the private IP ranges to the router's RIP configuration to allow routing between the
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Decentralized Server-less Applications with Blockstack at AllThingsOpen
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Electronic Communications
ARPANET was the first operational packet switching network and predecessor to the modern internet, developed by the US Department of Defense during the Cold War. A hard bounce occurs when an email fails to deliver due to a permanent issue like an invalid address, while a soft bounce happens when the message reaches the recipient's server but bounces before delivery, possibly due to a full inbox. An intranet is a private network within an organization that uses firewalls for security, while the internet publicly connects computer networks globally.
Arpanet
The ARPANET was the world's first operational packet switching network and the predecessor to the global internet. It was developed by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense during the Cold War.
Comm Slideshow
The document discusses several key terms related to computer networks and the internet:
1. ARPANET was the first packet switching network developed by the US Department of Defense during the Cold War and was the predecessor to the modern Internet.
2. A hard bounce is a failed email delivery due to a permanent issue like an invalid address, while a soft bounce occurs when an inbox is full.
3. Phishing involves using email and websites to scam people into providing private financial information.
Communication 2
The document defines and describes several key computer networking and internet terms:
ARPANET was the first operational packet switching network and predecessor to the Internet, developed by the US Department of Defense during the Cold War. Spam refers to unsolicited commercial email messages. Phishing involves sending fake emails pretending to be legitimate businesses to steal users' private information. Encryption scrambles information for security during internet transmission while decryption unscrambles the encrypted data.
Comppt22
The document discusses key terms related to computer networks and internet technology. It defines ARPANET as a network developed by the US Department of Defense during the Cold War. It also defines spam, the difference between the internet and an intranet, POP and PPTP protocols, phishing, encryption and decryption, netiquette, and routers.
Comppt2
The document discusses the history and development of computer networks and key networking concepts. It defines ARPANET as the first packet switched network developed by the US Department of Defense during the Cold War. It also defines common networking terms like soft and hard bounces in email, spam, intranets vs the internet, PPTP for virtual private networks, phishing, encryption and decryption, netiquette, and routers.
Electronic Communication Investigate
ARPANET was the first packet switching network developed by the US Department of Defense during the Cold War and was a precursor to the modern Internet. Email delivery failures can be either soft bounces, where the message reaches the recipient's server but not their inbox, or hard bounces, where delivery fails permanently due to issues like invalid addresses. Netiquette guidelines recommend maintaining civility when posting online and avoiding excessive formatting or spamming readers with unnecessary information.
Introduction internet by abhay
This document discusses computer networking and the internet. It defines networking and computer networking as connecting devices and computers, respectively, to transmit signals and share data/resources. The internet is described as a global network that connects computer networks worldwide to exchange all types of data. The origins and development of the internet from ARPANET in 1969 to becoming publicly accessible in 1995 is summarized. Some advantages and disadvantages of the internet are also provided in brief.
Internet
The document provides information about the Internet and cybercrime. It defines the Internet as a network of networks that connects computers globally and allows for data transmission and communication. It then discusses several forms of cybercrime such as illegal access of systems, fraud, and hacking. Cybercrime involves using computers or networks to facilitate illegal activities and target individuals' personal or financial information without consent. Common cybercrimes mentioned include phishing scams, cyberstalking, and hacking to gain unauthorized access to systems or data.
Internet
The document provides information about what constitutes cybercrime and the types of criminal activities that fall under this category. It discusses how cybercrime involves illegal activities that are committed online using computers and networks. Some examples of cybercrime variants mentioned include hacking, cyber squatting, phishing, cyber stalking, and vishing - which aim to illegally access systems, steal personal and financial information, or harass individuals over the internet. The document also notes how cybercriminals can include children, dissatisfied employees, professional hackers, and crackers.
Electronic Communication Investigate
ARPANET was the world's first operational packet switching network and predecessor to the Internet, developed by ARPA during the Cold War. A soft bounce occurs when an email reaches the recipient's server but bounces before delivery, while a hard bounce means the message is permanently undeliverable. Computer spam refers to annoying messages or ads that flood computers when accessing the internet or using email. An intranet is a private network, protected by passwords and only accessible to authorized users like employees, whereas the Internet is a public space. POP3 and IMAP are protocols for retrieving email from remote servers over TCP/IP connections.
Internet
The document provides information about what the Internet is, including its history and growth. It defines the Internet as a network of networks that connects computers globally and allows for communication and sharing of information. Some key points include:
- The Internet began in 1968 as the US Defense Department's ARPANET and grew to connect universities and research labs. By the 1980s it expanded commercially.
- It uses TCP/IP protocols and packet switching to connect over 90% of the world. Growth has been exponential, reaching over 200 million hosts by 2002.
- Other topics covered include IP addresses, domain name system (DNS), protocols like HTTP, FTP, email and how they enable sharing of web pages, files and messages
Computer Apps 1 Slide Show
This document contains brief definitions of technical terms including Arpanet, hard and soft bounces, computer spam, internet vs intranet, POP, phishing, encryption/decryption, netiquette, and routers. Arpanet was the first operational packet switching network. Hard bounces refer to undeliverable email while soft bounces occur when email reaches the recipient. Computer spam is junk email that often advertises products. An intranet uses internet technology for a private network while the internet connects global networks. POP allows receiving email over TCP/IP and routers connect multiple computers to a network.
Arpanet
The document discusses key concepts related to email and the internet including soft and hard bounces caused by full inboxes or invalid addresses, spam as unwanted junk mail, the differences between the internet and intranets, POP protocol for email clients and servers, phishing to illegally obtain personal information, encryption to securely send emails, netiquette rules for polite online behavior, and routers forwarding information on the internet.
Packet sniffing in LAN
This document discusses packet sniffing and ARP poisoning on a local area network (LAN). It begins by explaining that packet sniffing involves monitoring all network packets and putting the network card into promiscuous mode. It then discusses how ARP works to convert IP addresses to MAC addresses and maintains an ARP cache. The document goes on to explain how ARP poisoning, a type of attack, works by sending falsified ARP messages to associate the attacker's MAC address with a legitimate IP address, allowing the attacker to intercept network traffic. It provides an example of using the tool Cain and Abel to conduct ARP poisoning on a sample LAN to sniff usernames and passwords entered on a website.
INTERNET
The document provides an overview of the internet including its origin, advantages, disadvantages, and how it works. It discusses that the internet originated from ARPANET, a network funded by the US military in the 1960s. It connects computers through telephone lines, cables, satellites, and wireless connections. Information is broken into packets and sent using TCP and IP protocols, then reassembled at its destination. The internet provides advantages like online shopping, education and banking but also disadvantages such as viruses, cyber crimes, and wasting time.
Electronic Communication Investigate
This document defines and explains several key concepts in electronic communication:
ARPANET was the world's first operational packet switching network. A soft bounce occurs when an email reaches the recipient's server but bounces, while a hard bounce means the address is permanently undeliverable. Computer spam refers to junk email or newsgroup posts. An intranet is a private network using web software, while the internet is a global network connecting computers worldwide. POP is used for pop-up ads intended to attract traffic or capture email addresses. Phishing involves masquerading as a trusted entity to acquire sensitive information. Encryption converts data to code while decryption converts it back, requiring a secret key. Netiquette involves social conventions that facilitate
E Mail Ppt 2
A hard bounce occurs when an email is sent to a recipient whose address cannot be found, while a soft bounce happens when an inbox is full. Computer spam involves sending emails with bad intentions like credit card scams or identity theft. Encryption uses an algorithm to transform readable information into an unreadable format, while decryption reverses this process. Netiquette refers to etiquette guidelines for safe and polite internet use.
Chapter 14Internet Services and EmailChapter 14 Overview.docx
Chapter 14
Internet Services and Email
Chapter 14 Overview
Fundamentals of internet service, notably email
Email formatting and transmission
Email security issues
Enterprise firewalling and point of presence
Internet Services
Software that provides Layer 7 services
Not all Layer 7 services are end-user services
DNS – name translation for other services
DHCP – automated host configuration
Traditional internet applications
Many Internet applications were developed before security problems became serious
Some date to the 1970s
Older applications: file transfer (FTP), remote terminals (Telnet), finger protocol
Internet Email
Email with “@” address dates back to 1971
Developed for ARPANET hosts
Two types of Internet standards for email
Formatting standards – layout of email messages and how to handle attachments
Protocol standards – how to exchange an email message/file between hosts
Basic Email Format
MIME Formatting
“Multipurpose Internet Message Extension”
Traditional email contains 7-bit ASCII characters
Some email servers erase the eighth bit, or otherwise modify it
MIME provides a way to embed non-ASCII encoding in an email message
Embeds images or complex documents
Formats messages using Web-style markup
Includes encrypted data or digital signatures
Email Protocols
Two Types of Protocols
Mailbox protocols – let a client program retrieve email from a server
POP3 – a simple and popular protocol
IMAP – a more elaborate protocol
MAPI – Microsoft's Message API (Exchange)
Delivery protocols – transmit an email to another server for delivery to its destination
Typically Simple Mail Transfer Protocol: SMTP
Tracking an Email: Servers
Tracking an Email: Headers
Is This Email Genuine?
Headers from the Suspect Email
Email Security Problems
Connection-based attacks
Large-scale sniffing risks
Many sites use SSL to encrypt email traffic
Spam
Unsolicited email; often distributes frauds
Phishing
Email that tries to retrieve authentication data
Email viruses
Messages that trick user into replicating them
Spam, Spam, Spam, Spam, Spam
A huge problem
Unsolicited email wastes bandwidth, server storage space, server compute cycles
Typical spam involves fraudulent or illegal activities, or products not accepted in normal advertising channels
Frauds
Advance fee fraud
Dubious stock investments
Spam Prevention and Control
Restrict access to mail servers
Whitelists – lists of email servers that actively avoid handling spam
Blacklists – email servers that carry spam
Identify spam by pattern and filter it out
Binary matching – looks for an exact match with specific features
Statistical matching – calculates likelihood that an email is spam; filters on relative scores
Phishing
A social engineering attack
Email induces the recipient to visit a bogus website and provide login credentials
Bogus banking site, ecommerce site, email site, etc.
Elements of a phishing attack
Spam email that takes users to the bogus site
Website that collects .
Wiretapping
This document discusses packet sniffing and network monitoring. It defines a sniffer as a tool that can capture and display network data in transit. It explains that sniffers work by putting network adapters in promiscuous mode to listen to all traffic, not just traffic addressed to that system. The document outlines different types of sniffing attacks and protocols that are vulnerable when not encrypted. It also provides examples of sniffer tools and ways to detect and protect against sniffing on a network, such as using encryption, static configurations, and intrusion detection systems.
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Chapter 14Internet Services and EmailChapter 14 Overview.docx
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Other Powerpoinnt
The document defines key terms related to the history and technology of the internet. It explains that ARPANET was the predecessor to the modern internet, and defines different types of email bounces. It also outlines the differences between the internet and an intranet, describes POP and phishing, and defines encryption/decryption, netiquette, and routers.
Copyright Slideshow
Copyright protects creative works like writing, art, and music by preventing unauthorized duplication. Fair use allows limited use of copyrighted material without permission for purposes like teaching under certain conditions, such as using a small portion of the work and not negatively impacting its market. Strict guidelines govern how much of a work can be used under fair use for things like poetry excerpts, images, and software copying. Permission is required for activities like significantly altering or adapting a copyrighted work.
Inside A Computer
The document describes the main components inside a computer and their functions. The power supply provides electricity to run the computer. The motherboard allows all parts to communicate. The hard drive stores large amounts of data that persists even when the computer is off. The fan cools the computer to prevent overheating as components process information at high speeds. The processor executes commands and applications, while RAM temporarily stores data for quick access and the video card handles graphics processing and display.
Types Of Computer Systems
This document summarizes different types of computer systems including their average costs. It discusses desktop computers from major manufacturers like Apple, Dell, HP, and Lenovo ranging from $279 to $1,899. Laptop computers average $2500, smartphones from Blackberry, Apple and Nokia range from $250 to $499, and tablet computers average $1400. Touch screen computers are $1,184 to $1,522 on average, Apple computers average $1850, Surface computers up to $10,000, GPS systems average $650, and mini laptops range from $300 to $900.
E Mail Terms Powerpoint
This document defines and describes several common digital communication methods and technologies, including e-mail, RSS feeds, chat, online discussion boards, text messaging, blogs, the iPhone, and Blackberry. These allow people to communicate and share information online through messages, files, discussions, photos, and more in real-time and asynchronously from around the world using computers and mobile devices.
Code Red Virus
The Code Red worm attacked Microsoft IIS web servers in July 2001. The Love Bug virus spread through email attachments with the subject "I love you" and replicated to the user's contacts. Biometric security uses fingerprints or other biometrics to verify identity. Phishing involves fake emails, auction scams, or bogus online sales. Biometrics reduces fraud and passwords but is expensive, and fingerprints may change over time. Antivirus software detects viruses through behavior analysis and dictionaries then removes infections. Encryption should protect employee, bank, and credit card data.
Inside A Computer Workstation
The document summarizes several key components inside a computer workstation: the motherboard allows communication between all parts; the fan cools parts to prevent overheating as the computer processes information at high speeds; RAM temporarily stores data for easy retrieval by the computer; and the CD drive installs software, backs up data, and copies or plays music and audio files.
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ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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UiPath Test Automation using UiPath Test Suite series, part 6
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
Building Production Ready Search Pipelines with Spark and Milvus
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
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20240609 QFM020 Irresponsible AI Reading List May 2024
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Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
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GraphSummit Singapore | Enhancing Changi Airport Group's Passenger Experience...
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Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
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AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
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20240605 QFM017 Machine Intelligence Reading List May 2024
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Programming Foundation Models with DSPy - Meetup Slides
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Communications Mining Series - Zero to Hero - Session 1
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Driving Business Innovation: Latest Generative AI Advancements & Success Story
Other Powerpoinnt
- 1. ARPANET: The ARPANET (Advanced Research Projects Agency Network) developed by ARPA of the United States Department of Defense, was the predecessor of the modern-day Internet.
- 2. Hard vs. Soft Bounce Hard Bounce- the failed delivery of an email due to a permanent reason like a non-existent address Soft Bounce- an email message that gets bounced back because the recipient’s inbox is full
- 3. Computer Spam Computer spam is unwanted and unsolicited email advertisements or messages
- 4. Internet vs. Intranet Internet: an electronic communication network that connects computer networks around the world Intranet: private computer network with a firewall; business
- 5. POP POP: Post Office Protocol, a protocol used to retrieve email from a mail server
- 6. Phishing The act of sending an email to a user falsely claiming to be an established legitimate business is an attempt to scam the users into surrendering private information that will be used for identity theft.
- 7. Encryption and Decryption Encryption: scrambling of info for security purposes to be sent across the Internet Decryption: descrambling of info for security purposes that has been sent across the Internet
- 8. Netiquette Netiquette: guidelines for posting messages to other services and Internet newsgroups. Netiquette is important because it not only covers rules to maintain civility in discussion, but also special guidelines unique to the electronic nature of forum messages
- 9. Router A device that forwards data packets along networks. A router connected to at least two networks. Routers are located at gateways, the places where two or more networks connect.