Page 51 - DCAP207_NETWORKS_DCAP406_COMPUTER_NETWORKS

Computer Networks/Networks

Notes 5. State with the help of a diagram the different components of typical fiber optic link.
Mention the various components of signal loss.
6. What is reflection? What happens to a beam of light as it travels to a less dense medium?
What happens if it travels to a denser medium?
7. What advantages do coaxial cables offer over twisted pair cables?
8. Compare fiber optic cable with UTP cable when used as transmission media in LANs.

9. What is the purpose of cladding in an optical fiber? Discuss its density with respect to the
core.
10. What is skin effect and how does it affect the performance of TP cables?

11. How does coaxial cable reduce the problem of skin effect and becomes an appropriate
media for higher frequency data transmission?
12. Which type of transmission media does find extensive deployment for digital transmission
and why?

Answers: Self Assessment

1. Transmission media 2. Pass band
3. Bandwidth 4. Propagation delay

5. Frequencies 6. True
7. False 8. True
9. False 10. True

3.6 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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