Can anyone answer and explain the following questions from Into to Computer Netw

Question

Can anyone answer and explain the following questions from Into to Computer Networking course?

1)

In the peer-to-peer paradigsm:

a) Server nodes are always available

b) Client nodes may never play a server role

c) Peer nodes are arbitrary and have direct communication

d) Peer nodes have permanent addresses

2)

In CRC error detection technique with P = 101 and D = 111001, the FCS filed is:

a) FCS = 101

b) FCS = 111

c) FCS = 11

d) FCS = 10

e) Other: Specifiy ___________________

3)

TCP segment has 40 bytes of header (20 standard and 20 optional). What is the HLEN value for TCP segment sent by this client:

a) HLEN = 20

b) HLEN = 40

c) HLEN = 1010

d) HLEn = 1020

e) Other(specify): ___________________

4)

TCP client has buffer capacity of 2000 bytes, 200 of which are full. What is the Receive Window field (RcvWin) value for TCP segment sent by this client:

a) RcvWin = 200

b) RcvWin = 1800

c) RcvWin = 2000

d) RcvWin = 2200

e) Other(Specify)__________

5)

Consider an Ethernet network with 4 fully-meshed switches. Each switch is fully utilized. Assuming all links are bidirectional, find the total number of links:

a) 96x96

b) 4+24

c) 100x100

d) Other(Specify): ____________________-

Explanation / Answer

Answer of 1 : In peer-to-peer connection,all nodes acts as Client and server both,,we can make any node as server node anytime,,if we make a node as server,then it can share/provide data to all other client nodes also.

Hence,

a] option a, is wrong.

b] option b, is also wrong. because we can make any client node as Server node (it is our choice).

c] option c, is correct because all the nodes in Peer-to-Peer connection have direct connection and as we had already discussed,,all nodes are arbitrary.

d] option d, is also wrong because all nodes in Peer-to-Peer connection don't have permanent address..we can change their addresses.

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