STUPIDSID
Solve any four Q1 (a,b,c,d,e)
1(a)
Explain PPP header format.
5 M
1(b)
Compare TCP and UDP.
5 M
1(c)
List the categories of UTP cables.How is noise interfereance minimized in twisted pair cables?
5 M
1(d)
Distinguish between OSPF and BGP.
5 M
1(e)
Whatis sub netting? List advantages and disadvantages of the same.
5 M
2(a)
Lsit and explain different ARQ techniques. Specify the maximum window size for ezch with justification.
10 M
2(b)
What is piggybacking? Give an example of piggybacked frame. Sketch the appropriate HDLC frames for the following scenario involving primary station 'A' and two secondary stations B and C:
i) Primary station A wishes to establish a Normal Response mode link with secondary stations D And C.
ii) Both the stations B and C send positive ackowledments to A
iii) Station A sends a polling command to B and B sends 4 data frames. The third frame is lost during transmission.
iv) Assuming selective repeat ARQ, station A sends, negative acknowledgement to station B.
v) Station B resends the frame and A sends positive acknowledgment.
vi) Station A now polls station C and station C reponds with ready response. A send three data frames to C and C sends positive acknowledgement to indicate the receipt of error free data frames.
i) Primary station A wishes to establish a Normal Response mode link with secondary stations D And C.
ii) Both the stations B and C send positive ackowledments to A
iii) Station A sends a polling command to B and B sends 4 data frames. The third frame is lost during transmission.
iv) Assuming selective repeat ARQ, station A sends, negative acknowledgement to station B.
v) Station B resends the frame and A sends positive acknowledgment.
vi) Station A now polls station C and station C reponds with ready response. A send three data frames to C and C sends positive acknowledgement to indicate the receipt of error free data frames.
10 M
3(a)
Differentiate between IPV4 and IPV6. Determine the class and network address for the following IP address ( Assuming subnetting is not being used and use default mask) i) 84.42.58.11 ii) 195.38.14.13 iii) 144.62.12.9
10 M
3(b)
What is meant by 'blocking' in circuit switching networks? Bring out the advantages of multi stage space division switching over single stage switching.
4 M
3(c)
Sketch three stage space divison swicth for N=15, n=5 and k=2 What is condition required to make it non blocking? For the same specifications, sketch three stage TST switch using TSI modules.
6 M
4(a)
Draw OSI reference model and explain function of each layer. Name the layers responsible for: i) end to end reliability ii) link to link reliability.
10 M
4(b)
Define the utilization or efficiency of the line and derive the expression for stop and wait flow control. Calculate the maximum link utilization for tthe following cases:
i) stop and wait flow control
ii) Siding window flow control with window sizes of 4 and 7 link specifications: Frame length = 1000bits/frame Velocity of propagation =2×108m/sec Link distance = 20km Data rate = 20Mbps
i) stop and wait flow control
ii) Siding window flow control with window sizes of 4 and 7 link specifications: Frame length = 1000bits/frame Velocity of propagation =2×108m/sec Link distance = 20km Data rate = 20Mbps
10 M
5(a)
Apply Dijkstra's and Bellman Ford algorithm to given network and find the least cost path between source node 1 to all other nodes:
!mage
!mage
10 M
5(b)
Draw and explain TCP header format with the help of a neat diagram.
10 M
write a short note any two Q6.(a,b,c,d)
6(a)
Congestion control techniques
10 M
6(b)
ADSL
10 M
6(c)
TCP connection establishment and release
10 M
6(d)
CSMA/CD
10 M
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