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MTA Networking Fundamentals, Exercises of Local Area Network (LAN)

98-366 Networking Fundamentals. 1.1 Understand the Concepts of the Internet, Intranet, and Extranet. 1.2 Understand the Local Area Network (LAN).

Typology: Exercises

2022/2023

Uploaded on 05/11/2023

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98-366 Networking Fundamentals
1.1 Understand the Concepts of the Internet, Intranet, and Extranet
1.2 Understand the Local Area Network (LAN)
1.3 Understand VLANs, Wired LANs, and Wireless LANs
1.4 Understand the Wide Area Network (WAN)
1.5 Understand Wide Area Network Connections
1.6 Understand Wireless Network Connections and Security
1.7 Understand Network Topologies and Access Methods
MTA Network Fundamentals 1 Test
L E S S O N 1
98-366 Networking Fundamentals
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98-366 Networking Fundamentals

1.1 Understand the Concepts of the Internet, Intranet, and Extranet

1.2 Understand the Local Area Network (LAN)

1.3 Understand VLANs, Wired LANs, and Wireless LANs

1.4 Understand the Wide Area Network (WAN)

1.5 Understand Wide Area Network Connections

1.6 Understand Wireless Network Connections and Security

1.7 Understand Network Topologies and Access Methods

MTA Network Fundamentals 1 Test

L E S S O N 1 98-366 Networking Fundamentals

98-366 Networking Fundamentals

Understand the Concepts

of the Internet, Intranet,

and Extranet

98-366 Networking Fundamentals

98-366 Networking Fundamentals

 In 1962 ARPA opened a computer research program and appointed an MIT scientist named John Licklider to lead it. He had just published his first memorandum on the "Galactic Network" concept ... a futuristic vision where computers would be networked together and would be accessible to everyone.

 In October 1969, Internet messaging programs (IMPs) were installed in computers at both UCLA and Stanford. UCLA students would 'login' to Stanford's computer, access its databases and try to send data.

98-366 Networking Fundamentals

 The experiment was successful and the fledgling network had come into being

 By December 1969 ARPANET comprised four host computers with the addition of research centers in Santa Barbara and Utah

 This was the beginning of the Internet

98-366 Networking Fundamentals

Intranet

 A private network based on Internet protocols such as TCP/IP but designed for information management within a company or organization

 One of the key advantages of an intranet is the broad availability and use of software applications unique to the needs of a corporation

 It is also a computer network and includes some of the same technologies as the Internet

98-366 Networking Fundamentals

 Intranet uses include providing access to software applications; document distribution; software distribution; access to databases; and training

 An intranet is so named because it looks like a World Wide Web site and is based on the same technologies, yet is strictly internal and confidential to the organization and is not connected to the Internet proper

 Some intranets also offer access to the Internet, but such connections are directed through a firewall that protects the internal network from the external Web

98-366 Networking Fundamentals

VPN

 Virtual private network are nodes ( nodes are a connection point, either a redistribution point or a communication endpoint (some terminal equipment) on a public network  They communicate among themselves using encryption so that their messages are safe from being intercepted by unauthorized users  VPNs operate as if the nodes were connected by private lines. An example would be teachers at home needing limited access to the school district’s intranet would be given VPN software for their personal laptop

98-366 Networking Fundamentals

98-366 Networking Fundamentals

Firewall

 A computer system or network firewall is designed to permit authorized communications while blocking unauthorized access  The device is configured to permit or deny computer applications based upon a set of rules and other criteria  Firewalls are technological barriers designed to prevent unauthorized or unwanted communications between computer networks or hosts

98-366 Networking Fundamentals

Complete Student Activity 1.

98-366 Networking Fundamentals

Lesson Overview

In this lesson, you will learn about:  LANs  Perimeter networks  Addressing  Local loopback IPs  An Internet collection

98-366 Networking Fundamentals

LANs - Local Area Networks

 Computer networks ranging in size from two computers in a home to a few computers in a single office to hundreds or even thousands of devices spread across several buildings.  They function to link computers together and provide shared access to printers, file servers, and other services.

98-366 Networking Fundamentals

 LANs in turn may be plugged into larger networks, such as larger LANs or wide area networks (WANs), connecting many computers within an organization to each other and/or to the Internet.  The physical media that connect devices, interfaces on the individual devices that connect to the media, protocols that transmit data across the network, and software that negotiates, interprets, and administers the network and its services are all a part of the LAN.

98-366 Networking Fundamentals

Perimeter Networks

 A perimeter network is a specialized network. Usually a physical subnet outside of the main firewall allowing a business to expose their services to the Internet.