Electronic Commerce - Infrastructure for Ecommerce
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This document discusses the infrastructure for electronic commerce, including packet switched networks, TCP/IP protocols, internet utility programs, markup languages, and web client/server architectures. It describes how packet switched networks break files into packets with addresses, and how TCP/IP controls packet assembly and addressing. Common internet utility programs are explained like Finger, Ping, Tracert and Telnet. Web clients and servers are defined, noting servers respond to client requests using hardware, OS software and web server software. Client/server architectures can be two-tier or three-tier.
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- The internet was created by ARPA and the US Department of Defense and uses interconnected networks to transmit data even if parts fail.
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Internet standards are specifications created by the IETF and published as RFCs to define Internet technologies and methodologies. RFCs are approved by the IESG and assigned a unique integer identifier. The TCP/IP protocol suite is a set of communication protocols used to enable transmission of data over a network. It includes protocols like TCP, IP, UDP, and others. These protocols operate at different layers, with layers like link, internet, transport, and application. Communication between hosts uses the TCP/IP protocols through these layers.
Computer Networks
The document summarizes several key application layer protocols in computer networks. It discusses the Domain Name System (DNS) which maps domain names to IP addresses. It also describes remote login protocols like Telnet and SSH, electronic mail protocols like SMTP, file transfer protocols like FTP and SCP, and the Hypertext Transfer Protocol (HTTP) which underlies the World Wide Web. It provides an overview of Voice over IP (VoIP) technology and signaling protocols used for call setup and management in IP telephony systems.
Computer network coe351- part2- final
The document discusses computer networks and network protocols. It begins with an introduction to network protocols and the Internet protocols. It then provides definitions and explanations of communication protocols, including addressing, transmission modes, and error detection/recovery techniques. It lists and describes common network protocols like TCP/IP, routing protocols, FTP, SMTP, and more. It also discusses the OSI model layers, TCP/IP protocol suite, data encapsulation, protocol data units, protocol assignments to layers, and addresses at each layer.
uniti-websitebasics-230517110223-12e31dbc (1).pptx
It provides additional features like spell checking, grammar checking,
translation etc.
Networking: It handles all the networking tasks like establishing connection with
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JavaScript Interpreter: It interprets and executes the JavaScript code embedded in
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Browser Security: It provides security features like sandboxing, same-origin policy,
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Browser Extensibility: It allows third party extensions to add
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Internet architecture protocol
The document discusses networking concepts such as the difference between the internet and a network, internetworking, internet protocols, internet architecture, TCP/IP models, address mapping protocols, dynamic host configuration protocol, and domain name system servers. It provides definitions and explanations of these topics, describing for example that the internet is a global network of interconnected computer networks that uses common protocols like TCP/IP to connect devices, while a network is a set of devices connected locally.
Module 1.pptx
Introduction to IoT
Defining IoT,
Characteristics of IoT,
Physical design of IoT,
Logical design of IoT,
Functional blocks of IoT,
Brief review of applications of IoT.
Smart Object
Definition,
Characteristics and Trends
Text Book
1. Arsheep Bahga (Author), Vijay Madisetti, Internet Of Things: A Hands-On Approach
Paperback, Universities Press,
Reprint 2020
2. David Hanes, Gonzalo Salgueiro, Patrick Grossetete, Robert Barton, Jerome Henry,
IoT Fundamentals Networking Technologies, Protocols, and Use Cases for the Internet of
Things CISCO.
Internet of Things.
CSDLO5013
Internet Protocols
The document discusses Internet protocols and TCP/IP. It describes how the Internet protocols were developed in the 1970s to facilitate communication between different computer systems. The key protocols are TCP and IP. TCP provides reliable data transmission and IP provides best-effort delivery of packets across networks. The document outlines the TCP/IP protocol stack and key concepts like IP addressing, ARP, routing, ICMP, TCP connection establishment and sliding windows.
Aplication and Transport layer- a practical approach
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Module 1 slides
This document provides an overview of CCNA Module 1 on internetworking. It describes the purpose of routers, switches, hubs and other network devices. It also covers networking concepts like collision domains, broadcast domains, and the operation of Ethernet networks using CSMA/CD. The document explains the OSI model layers and compares it to the TCP/IP model. It also discusses common network applications and protocols like TCP, UDP, IP, ARP and ICMP.
clg_assgn.pptx
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- 1. IT 2031 - ELECTRONIC COMMERCE THEORY NOTES UNIT - II
- 2. UNIT II INFRASTRUCTURE FOR E COMMERCE • Packet switched networks • TCP/IP protocol script • Internet utility programmes • SGML, HTML and XML • web client and servers • Web client/server architecture • intranet and extranets.
- 3. Packet switched networks • Packet Switched - network, files and e-mail messages are broken down into small pieces, called packets that are labeled electronically with their origins, sequences, and destination addresses. • Routing Packets – LAN, WAN
- 5. TCP/IP • TCP controls the disassembly of a message or a file into packets before it is transmitted over the Internet, and it controls the reassembly of those packets into their original formats when they reach their destinations. • The IP specifies the addressing details for each packet, labeling each with the packet’s origination and destination addresses. • IP addressing – IP v4 –used over 20 yrs. • Range : 23^2 = 4,294,967,296 • Example : 216.115.108.245 =11011000011100110110110011110101 =3,631,433,189.
- 6. Internet utility programmes Finger and Ping Utilities : • Finger is a program that runs on UNIX operating systems and allows a user to obtain • some information about other network users. A Finger command yields a list of users who are logged on to a network, or reports the last time a user logged on to the network. • Disabling the command on their systems for privacy and security reasons
- 7. TCP/IP • A program called Ping(Packet Internet Groper)- tests the connectivity between two computers connected to the Internet. • Provides performance data about the connection between Internet computers, such as the number of computers(hops) between them.
- 8. Internet utility programmes Tracert and Other Route-Tracing Programs : • Tracert (TRACE RouTe) sends data packets to every computer on the path (Internet) between one computer and another computer and clocks the packets’ round-trip times • Others - VisualRoute route-tracing program
- 10. Internet utility programmes • Telnet and FTP Utilities - Telnet lets a client computer give commands to programs running on a remote host. • (FTP) is the part of the TCP/IP rules that defines the formats used to transfer files between TCP/IP- connected computers • Indexing and Searching Utility Programs • Data Analysis Software - Analog, Keylime Software, UrchinWeb Analytics,Web Side Story, and WebTrends • Link-Checking Utilities • Remote Server Administration
- 11. Web client and servers • Major job : respond to requests from Web client computers. • Main Elements : Hardware, operating system software, and Web server software. • Types of sites : Development sites, Intranets, Extranets, Transaction-processing sites, Content-delivery sites.
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- 13. Two Tier Client / Server Architecture
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