Lesson 10_ History of computer networks and the Internet.pdfraufkhalid104
The telephone network uses circuit switching to transmit information from sender to receiver – voice is transmitted at a constant speed between sender and receiver. In the early 1960s, because of the increasing importance of computers (while the cost of a computer was huge) and the advent of multitasking computers, people began to consider the problem of how to to connect computers together for sharing between users in different geographical areas.
This is a slide about the History of The Internet created by Judd Vander Rondares. You can get this as your SOURCE ONLY for your ICT subject. You can get lot of informations about the main topic.
THE ORIGINS OF THE INTERNET The origins of the internet are rooted in the USA...ZymyraCanillas
The origins of the internet are rooted in the USA of the 1950s. The Cold War was at its height and huge tensions existed between North America and the Soviet Union. Both superpowers were in possession of deadly nuclear weapons, and people lived in fear of long-range surprise attacks. The US realized it needed a communications system that could not be affected by a Soviet nuclear attack.
At this time, computers were large, expensive machines exclusively used by military scientists and university staff.
These machines were powerful but limited in numbers, and researchers grew increasingly frustrated: they required access to the technology, but had to travel great distances to use it.
To solve this problem, researchers started ‘time-sharing’. This meant that users could simultaneously access a mainframe computer through a series of terminals, although individually they had only a fraction of the computer’s actual power at their command.
The difficulty of using such systems led various scientists, engineers and organizations to research the possibility of a large-scale computer network.
No one person invented the internet. When networking technology was first developed, a number of scientists and engineers brought their research together to create the ARPANET. Later, other inventors’ creations paved the way for the web as we know it today.
In 1965, Lawrence Roberts made two separate computers in different places ‘talk’ to each other for the first time. This experimental link used a telephone line with an acoustically coupled modem, and transferred digital data using packets.
When the first packet-switching network was developed, Leonard Kleinrock was the first person to use it to send a message. He used a computer at UCLA to send a message to a computer at Stanford. Kleinrock tried to type ‘login’ but the system crashed after the letters ‘L’ and ‘O’ had appeared on the Stanford monitor.
A second attempt proved successful and more messages were exchanged between the two sites. The ARPANET was born.
President Dwight D. Eisenhower formed the Advanced Research Projects Agency (ARPA) in 1958, bringing together some of the best scientific minds in the country. Their aim was to help American military technology stay ahead of its enemies and prevent surprises, such as the launch of the satellite Sputnik 1, happening again. Among ARPA’s projects was a remit to test the feasibility of a large-scale computer network.
Lawrence Roberts was responsible for developing computer networks at ARPA, working with scientist Leonard Kleinrock.
Roberts was the first person to connect two computers. When the first packet-switching network was developed in 1969, Kleinrock successfully used it to send messages to another site, and the ARPA Network—or ARPANET—was born.
Once ARPANET was up and running, it quickly expanded. By 1973, 30 academic, military and research institutions had joined the network, connecting locations including Hawaii, Norway and the UK.
As ARPANET grew
Lesson 10_ History of computer networks and the Internet.pdfraufkhalid104
The telephone network uses circuit switching to transmit information from sender to receiver – voice is transmitted at a constant speed between sender and receiver. In the early 1960s, because of the increasing importance of computers (while the cost of a computer was huge) and the advent of multitasking computers, people began to consider the problem of how to to connect computers together for sharing between users in different geographical areas.
This is a slide about the History of The Internet created by Judd Vander Rondares. You can get this as your SOURCE ONLY for your ICT subject. You can get lot of informations about the main topic.
THE ORIGINS OF THE INTERNET The origins of the internet are rooted in the USA...ZymyraCanillas
The origins of the internet are rooted in the USA of the 1950s. The Cold War was at its height and huge tensions existed between North America and the Soviet Union. Both superpowers were in possession of deadly nuclear weapons, and people lived in fear of long-range surprise attacks. The US realized it needed a communications system that could not be affected by a Soviet nuclear attack.
At this time, computers were large, expensive machines exclusively used by military scientists and university staff.
These machines were powerful but limited in numbers, and researchers grew increasingly frustrated: they required access to the technology, but had to travel great distances to use it.
To solve this problem, researchers started ‘time-sharing’. This meant that users could simultaneously access a mainframe computer through a series of terminals, although individually they had only a fraction of the computer’s actual power at their command.
The difficulty of using such systems led various scientists, engineers and organizations to research the possibility of a large-scale computer network.
No one person invented the internet. When networking technology was first developed, a number of scientists and engineers brought their research together to create the ARPANET. Later, other inventors’ creations paved the way for the web as we know it today.
In 1965, Lawrence Roberts made two separate computers in different places ‘talk’ to each other for the first time. This experimental link used a telephone line with an acoustically coupled modem, and transferred digital data using packets.
When the first packet-switching network was developed, Leonard Kleinrock was the first person to use it to send a message. He used a computer at UCLA to send a message to a computer at Stanford. Kleinrock tried to type ‘login’ but the system crashed after the letters ‘L’ and ‘O’ had appeared on the Stanford monitor.
A second attempt proved successful and more messages were exchanged between the two sites. The ARPANET was born.
President Dwight D. Eisenhower formed the Advanced Research Projects Agency (ARPA) in 1958, bringing together some of the best scientific minds in the country. Their aim was to help American military technology stay ahead of its enemies and prevent surprises, such as the launch of the satellite Sputnik 1, happening again. Among ARPA’s projects was a remit to test the feasibility of a large-scale computer network.
Lawrence Roberts was responsible for developing computer networks at ARPA, working with scientist Leonard Kleinrock.
Roberts was the first person to connect two computers. When the first packet-switching network was developed in 1969, Kleinrock successfully used it to send messages to another site, and the ARPA Network—or ARPANET—was born.
Once ARPANET was up and running, it quickly expanded. By 1973, 30 academic, military and research institutions had joined the network, connecting locations including Hawaii, Norway and the UK.
As ARPANET grew
this presentation is mainly for helping class 12 cbse students for seminar hop this project helps u you have any ques or quries pls dont contact me becase i itself copieddd it from internet so pls understand my situain i am uploading this ppt to downlaod ppt
An internet with lower case “i” is two or more networks that can communicate with each other. The most notable internet is called the Internet with upper case “I” is composed of thousands of interconnected networks The Internet as several backbones, provider networks, and customer networks. At the top level, the backbones (international ISPs) are large networks owned by some communication companies such as Sprint, Verizon (MCI), AT&T, and NTT. The backbone networks are connected through some complex switching systems, called peering points. At the second level, there are smaller networks, called provider networks that uses the services of the backbones and pay them for their services. The provider networks are connected to backbones or other provider networks. At the edge of the Internet the customer networks are networks that actually use the services provided by the Internet. They pay to provider networks for receiving services. Backbones and provider networks are also called Internet Service Providers (ISPs). The backbones are known as international ISPs and the provider networks are known as national or regional lSPs.
APNIC Foundation, presented by Ellisha Heppner at the PNG DNS Forum 2024APNIC
Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
Instagram has become one of the most popular social media platforms, allowing people to share photos, videos, and stories with their followers. Sometimes, though, you might want to view someone's story without them knowing.
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdfFlorence Consulting
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
Gen Z and the marketplaces - let's translate their needsLaura Szabó
The product workshop focused on exploring the requirements of Generation Z in relation to marketplace dynamics. We delved into their specific needs, examined the specifics in their shopping preferences, and analyzed their preferred methods for accessing information and making purchases within a marketplace. Through the study of real-life cases , we tried to gain valuable insights into enhancing the marketplace experience for Generation Z.
The workshop was held on the DMA Conference in Vienna June 2024.
Understanding User Behavior with Google Analytics.pdfSEO Article Boost
Unlocking the full potential of Google Analytics is crucial for understanding and optimizing your website’s performance. This guide dives deep into the essential aspects of Google Analytics, from analyzing traffic sources to understanding user demographics and tracking user engagement.
Traffic Sources Analysis:
Discover where your website traffic originates. By examining the Acquisition section, you can identify whether visitors come from organic search, paid campaigns, direct visits, social media, or referral links. This knowledge helps in refining marketing strategies and optimizing resource allocation.
User Demographics Insights:
Gain a comprehensive view of your audience by exploring demographic data in the Audience section. Understand age, gender, and interests to tailor your marketing strategies effectively. Leverage this information to create personalized content and improve user engagement and conversion rates.
Tracking User Engagement:
Learn how to measure user interaction with your site through key metrics like bounce rate, average session duration, and pages per session. Enhance user experience by analyzing engagement metrics and implementing strategies to keep visitors engaged.
Conversion Rate Optimization:
Understand the importance of conversion rates and how to track them using Google Analytics. Set up Goals, analyze conversion funnels, segment your audience, and employ A/B testing to optimize your website for higher conversions. Utilize ecommerce tracking and multi-channel funnels for a detailed view of your sales performance and marketing channel contributions.
Custom Reports and Dashboards:
Create custom reports and dashboards to visualize and interpret data relevant to your business goals. Use advanced filters, segments, and visualization options to gain deeper insights. Incorporate custom dimensions and metrics for tailored data analysis. Integrate external data sources to enrich your analytics and make well-informed decisions.
This guide is designed to help you harness the power of Google Analytics for making data-driven decisions that enhance website performance and achieve your digital marketing objectives. Whether you are looking to improve SEO, refine your social media strategy, or boost conversion rates, understanding and utilizing Google Analytics is essential for your success.
2. The Subject of Computer Networking covers
different types of example networks.
They are:
THE INTERNET
THE ARPANET
NSFNET
ARCHITECTURE OF THE INTERNET
CONNECTION ORIENTED NETWORKS
WIRELESS LAN’S:802.11
3. The Internet is a vast collection of different
networks that use certain common protocols.
It also provides certain common services.
The beginning of the Internet can be disscussed
below:
4. THE ARPANET
At the height of the Cold war, the U.S DoD
wanted a command-and-control network
that could survive the nuclear war.
At that time , all military communications
used the public Telephone Network, which
was considered as vulnerable.
5.
6. TheBlackdots represents theTelephone
SwitchingOffices,eachofwhich is connected
withathousandsoftelephones.
Thevulnerabilityof asthesystemwasthat
thedestructionofafewkeyTolloffices could
fragment itinto manyisolatedislands.
Around1960,theDoDawarded acontractto
theRANDCorporationtofindaSolution.
7. Paul Baran , one of the Employee, came up with a
highly distributed and fault-tolerant design.
He proposed using the Digital packet switching
technology.
Baran wrote several reports to AT&T, But it was
restricted.
Several years went off, but DoD could not find any
solution.
8. THE ARPANET
In October 1957, the Soviet Union beat U.S into
space with the first Artificial Satellite named
SPUTNIK.
So the president Eisenhower created the single
Defence Organisation called ARPA(Advanced
Research Projects Agency)
ARPA tried to figure out what its mission should be.
Larry Roborts , a program manager tried to figure out
the mission.
10. In 1967, Donald Davis, submitted the same paper
as Paul Baran with the implementation at National
Physical Laboratory in England.
The NPL demonstrated the packet switching to
work.
Roberts came away from Gatlinburg and built what
later becomes ARPANET.
• The Subnet consists of microcomputers called
IMPs.
• Each IMP is connected with 2 IMP’S and 2IMP’S
are connected with another two IMP’S.
• AND the ARPANET began to grow.
11.
12. THE NSFNET
• NSF’S initial response was to fund the
Computer Science Network(CSN) in 1981.
• It connects the Computer Science
Departments with the ARPANET.
• NSF decided to built a backbone network
to connect six supercomputer centers.
• Each Super Computer consists of an LSI-
11 Microcomputer called FuzzBall.
15. CONNECTION ORIENTED
NETWORKS
A war has been going on between the
people who support connectionless.
And, Subnets and the people who
support connection-oriented subnets.
The main proponents of the
connectionless subnets come from the
ARPANET/Internet community.
Examples:
◦ATM(Asynchronous Transfer Mode)
◦Virtual Circuits
16. ASYNCHRONOUS TRANSFER MODE
ATM was designed in the early 1990’s and
launched amid truly incredible hype.
ATM is solving all the world's networking and
telecommunications problems by merging voice,
data, cable television, telex, telegraph, carrier
pigeon, tin cans.
ATM was much more successful than OSI, and it is
now widely used deep within the telephone system,
often for moving IP packets.
17. ATM networks are connection-oriented.
It sends data which requires the
first by sending a packet to set up
the connection.
As the setup packet wends its way
through the subnet, all the routers on
the path make an entry in their
internal tables.
18.
19. The most practical approach is to
equip both the office and the
notebook computers with short-range
radio transmitters and receivers to
allow them to communicate.
This works rapidly led to wireless
LANs.
It is being marketed by a variety of
companies.