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Network Management

1. (i) List the five key differences between TCP reference model and OSI reference model. (2)

2) Write the similarities and differences between packet and cell switching. (2)

3) Why is the data link layer in a LAN subdivided into Logical Link Control (LLC) and Medium Access Control (MAC) sub-layers ? (2)

4) List the characteristics of broadband coaxial cable. (2)

5) Differentiate between virtual circuit and datagram’s. (2)

6) The maximum payload of TCP segment is 62 1/2,2 1/212 1/2 bytes. Why ? (3)

7) What are sliding window protocols ? Explain one-bit sliding window protocol with an appropriate diagram. (2)

2. (i) Name all the basic network topologies and describe advantages of each. Draw proper diagram tor each topology. (2)

(ii) Explain the following terms : (2)

a) Bandwidth

b) Channel capacity

c) Multiplexing

d) Quality of Service (QoS)

e) Full-Duplex Transmission

(iii) What is the basic purpose of MAC layer protocol ? Explain the function of following MAC layer protocols :

(a) Ethernet

(b) Token bus (2)

3. (i) Describe the characteristics and application or the following network devices : (6)

(a) Routers

(b) Bridges

(c) Switches

(iii) Answer the following : (4)

(a) Explain ISDN BRI Services.

(b) Differentiate between...