Past Year Exam Papers

Here are two past year CS2105 exam paper set by me:

Enjoy.

Oh, here are some MCQs that have been rejected as exam questions this year.

1. Which of the following is a VALID networking protocol?
A. ECP
B. ERP
C. PGP
D. PAP
E. FYP

2. Which of the following is NOT a table used in networking protocols?
A. Switching Table
B. NAT Table
C. Forwarding Table
D. Routing Table
E. Premier League Table

:)

16 comments to Past Year Exam Papers

  1. GAO RISHENG says:

    Dear Prof

    For Paper 10/11 Q6 (a) is it asking node u instead of v? since there is no information about v and it only provides information about u.

    Thank you very much~

    Regards,

  2. Liu Chaoyi says:

    It would be very nice to see question 1 in this year’s paper, even if it is just worth 0.5 mark :)

  3. Oh Shunhao says:

    For AY10/11 Q15c (last page),

    The question says “After the RTS is successfully sent, the transmitting node sends the data frame immediately”

    What does it mean by “the RTS is successfully sent”?

    My interpretation is that the node immediately starts transmitting data the moment the RTS is sent out (like immediately after the transmission time of the RTS), without caring whether the RTS has reached anyone.
    In that case, it doesn’t seem to work any different from the original scheme.

    Or does the question mean “After the RTS has been sent and acknowledged successfully”? As in does the node wait for an acknowledgement for the RTS before transmitting data?

    • Ooi Wei Tsang says:

      It means that RTS is successfully sent without collision.

      • Huang zhanxiang says:

        Does it mean that RTS is successfully sent without A detecting any collision? Undetected collision can still happen because RTS is very small? So in this way, the only difference from the original scheme is that A will sent a small frame and then the data frame back to back, and if A detect any collision while sending RTS, channel time will not be wasted too much?

  4. Chan Jun Wei says:

    Dear prof,

    I want to ask about how a router learns about the IP of another router before running the routing protocol ( means when the routing table is empty).

    Are them hardcoded?

    Thank you.

    Regards,
    Jun Wei

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