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Computer networks

CSE - Computer networks - Questions and solutions
Question:-
Option (A)
        packet scheduling at routers
Option (B)
        intserv and diffserv
Option (C)
        congestion control
Option (D)
        flow control
Correct Option:
D
Question Solution:
    Silly window syndrome take place during flow control. Silly window syndrome is a problem in computer networking caused by poorly implemented TCP flow control. If a server with this problem is unable to process all incoming data, it requests that its clients reduce the amount of data they send at a time.
Question:-
Option (A)
        1 only
Option (B)
        1, 2 only
Option (C)
        1, 2 and 3
Option (D)
        1, 3 only
Correct Option:
A
Question Solution:
    1.    To detect d bit error hamming distance should be atleast d + 1.
            2.    To correct d bit error hamming distance should be atleast 2d + 1.
            3.    One dimensional parity checker can't detect burst error so the two dimensional parity checker come under concept.
Question:-
Option (A)
        both 1 and 2
Option (B)
        only 1
Option (C)
        only 2
Option (D)
        None of these
Correct Option:
A
Question Solution:
    The main aspects of TCP is congestion control TCP uses a number of mechanisms to achieve high performance and avoid congestion collapse. Where network performance can fall by several order of magnitude. Both statement are true.
Question:-
Option (A)
        RARP
Option (B)
        FTP
Option (C)
        TELNET
Option (D)
        TFTP
Correct Option:
D
Question Solution:
    TFTP stands for trivial file transfer protocol. It is a file transfer protocol having functionality different from FTP. Due to its simple design it could be implemented using a small amount of memory. It is a simple protocol to transfer files. It has been implemented on top of the UDP. Using port number 69. It is small and easy to implement, therefore it lackes most of features of a regular FTP.