Note: Question 1 is compulsory. Attempt any 3 from the
remaining.
1 (a). Describe the salient features of mobile IP.3
(b). Describe the various issues related to measuring
network performances.6
(c).Identify the range of IP v4 addresses spanned by
Class A, Class B and Class C3
(d).Give three examples of protocol parameters that
might be negotiated when a connection is set up with
reference to the transport layer.- 3
(e).Are there any circumstances when a virtual circuit
service will (or at least should) deliver packets out
of order ? Explain. - 3
(f).If we want to transmit 1000 ASCII characters using
asynchronous transimssion, what is the minimum number
of extra bits needed ? What is the efficiency in percentage
? - 6
(g).What is the major disadvantages is using NRZ encoding
? How do RZ encoding 6 and biphase encoding attempt
to solve the problem ?
2 (a). A 10 KHz baseband channel is used by digital
transmission system. Ideal pulses are sent at the Nyquist
rate and the pulses can take 4 levels. What is the channel
capacity of the system ? -6 marks
(b). Discuss the following transmission techniques
for wireless transmission : 9
( i ).Microwave Transmission
( ii ).Radio Transmission
( iii ).Infrared transmission
3 (a).Compare and contrast the following :15
( i ).IEEE 802.3 frame and HDLC I-frame
( ii ).100 BASE F and 100 BASE T cable specification
( iii ).Circuit switching and Packet switching
( iv ).B-channels and D-channels
( v ).Upward and Downward multiplexing with reference
to the transport layer
4 (a).Comment on packet fragmentation approaches in
internetworking. -5
(b).Why is there a need for compression ? Compare between
JPEG and MPEG standards. -4
(c). Measurment of a slotted Aloha channel with an
Infinite number of users show that 10 percent of the
slots are idle. -6
( i ).What is the channel load ?
( ii ).What is the throughput ?
5 (a).What is the acknowledgement procedures in IEEE
802.5 protocol ? -3
(b).Compare the effect of a node failure in CSMA/CD
and token passing ring. -3
(c) With reference to transport layer outline the operation
of 3-way handshaking. How does the 3-way handshake prevent
old duplicate connection request andduplicate connection
request and acknowledgement ? - 3
(d)Describe the channel utilization versus load for
various random access protocols. Show it graphically
and compare mathematically slotted Aloha Vs Pure Aloha.
- 6
6 (a) Where is the multicasting routing used ? Describe
its advantages and disadvantages.-5
(b)Describe a suitable congestion control algorithm
with an example used for multicasting routing. - 5
(c).Describe the functioning of the combined Batcher
- Banyan 4 cell switch.5
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