Page 21 - DCAP406_DCAP_207_Computer Networks

Computer Networks/Networks

Notes Error Control: The receiving end after completion of receiving the information must also be
capable of dealing with and recognizing the corruption.
Local Area Network: A LAN is a form of local (limited distance), shared packet network for
computer communications.
Metropolitan Area Network: In MAN, different LANs are connected through a local telephone
exchange using one or two cables but not switching elements.
Service Primitives: The primitives enable the service provider to perform some action or report
on an action taken by a peer entity.

Wide Area Network: A WAN may be defined as a data communications network that covers a
relatively broad geographic area to connect LANs together between different cities with the
help of transmission facilities provided by common carriers, such as telephone companies.

1.10 Review Questions

1. What are the major factors that have made the use of computer networks as an integral
part of the business?

2. How are computer networks classified? Mention the some of the important reasons for
the classification of computer networks.
3. How is LAN characterized? Explain.

4. What are the different technologies available for implementing WAN?
5. What is WAN? How does it differ from LANs and MANs? Give at least two examples of
popular WANs.

Answers: Self Assessment

1. Resource sharing 2. transparent
3. network 4. access
5. distributed 6. True
7. False 8. False
9. True 10. True

1.11 Further Readings

Books Andrew S. Tanenbaum, Computer Networks, Prentice Hall
Behrouz A. Forouzan and Sophia Chung Fegan, Data Communications and
Networking, McGraw-Hill Companies

Burton, Bill, Remote Access for Cisco Networks, McGraw-Hill Osborne Media
McGraw-Hill Osborne Media
Rajneesh Agrawal and Bharat Bhushan Tiwari, Computer Networks and Internet,
Vikas Publication

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