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ANIRUDDHA ADAK
ANIRUDDHA ADAK

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WBUT/MAKAUT Computer Network Important PYQs Across Multiple Years

#networking #network #learning #beginners

WBUT Level Questions (Frequency >= 3)

I. 15 Marks Questions (Sorted by Frequency: Highest to Lowest)

  1. Explain the utility of layered network architecture. Compare ISO-OSI and TCP/IP models. Write down the similarities and differences between OSI and TCP/IP model.

    • Years: WBUT 2008, 2010, 2011, 2013, 2014, 2018 (Frequency: 6)

  2. Analyze the performance of pure ALOHA. How does slotted ALOHA improve performance over pure ALOHA. In both the cases find the expression for average delay and throughput. Compare the performance of pure ALOHA with slotted ALOHA.

    • Years: WBUT 2007, 2011, 2013, 2014, 2015, 2017 (Frequency: 6)

  3. Applying CRC algorithm, determine the checksum and the transmitted frame for the frame 11010111 and for the generator polynomial X^3 + X^2 + 1.

    • Years: WBUT 2006, 2011, 2016, 2018 (Frequency: 4)

  4. What do you understand by data privacy? How can authentication, integrity and non-repudiation be implemented by the digital signature technique?

    • Years: WBUT 2007, 2009, 2011, 2013 (Frequency: 4)

  5. a) What is the purpose of subnetting? b) State the advantages of IPv6 over IPv4.

    • Years: WBUT 2006, 2011, 2013, 2016 (Frequency: 4)

  6. a) What is congestion? Why do congestion occur? Explain Leaky bucket algorithm for congestion control. b) State the basic differences between TCP and UDP.

    • Years: WBUT 2011, 2018, 2019 (Frequency: 3)

  7. a) Sketch the waveform for the bit stream 10110010 in differential Manchester encoding format. b) A binary signal is sent over a 8 kHz channel whose signal to noise ratio is 20 dB. What is the maximum achievable rate? Define signaling rate.

    • Years: WBUT 2008, 2012, 2013 (Frequency: 3)

  8. a) What is bit rate? What is' Baud rate? b) An analog signal carries 4 bit in each signal unit. If 1000 signal units are sent per second, find the baud rate and bit rate.

    • Years: WBUT 2011, 2013, 2016 (Frequency: 3)

  9. In Selective Repeat ARQ the size of the sender and receiver window must be at most one half of 2m, explain it. What do you mean by 'Piggybacking'?

    • Years: WBUT 2009, 2010, 2013 (Frequency: 3)

  10. a) Explain the SMTP and FTP in brief. b) What do you understand by data security? Explain the various aspects of security with the help of public and private key.

    • Years: WBUT 2006, 2007, 2009 (Frequency: 3)

II. 10 Marks Questions (Sorted by Frequency: Highest to Lowest)

  1. Differentiate circuit switching and packet switching.
    • Years: WBUT 2008, 2010, 2011, 2012, 2013, 2017 (Frequency: 6)

III. 5 Marks Questions (Each short note topic is a distinct question, sorted by frequency: Highest to Lowest)

  1. DNS (Short Note)

    • Years: WBUT 2011, 2015, 2017, 2018, 2019 (Frequency: 5)

  2. IEEE 802.11 (Short Note)

    • Years: WBUT 2006, 2010, 2011, 2019 (Frequency: 4)

  3. CSMA/CD (Short Note)

    • Years: WBUT 2015, 2016, 2018, 2019 (Frequency: 4)

  4. RIP (Short Note)

    • Years: WBUT 2010, 2017, 2018, 2019 (Frequency: 4)

  5. OSPF (Short Note)

    • Years: WBUT 2016, 2017, 2018, 2019 (Frequency: 4)

  6. BGP (Short Note)

    • Years: WBUT 2016, 2017, 2018, 2019 (Frequency: 4)

  7. FTP (Short Note)

    • Years: WBUT 2012, 2017, 2018 (Frequency: 3)

  8. Cryptography (Short Note)

    • Years: WBUT 2016, 2018, 2019 (Frequency: 3)

  9. Virtual Private Network (VPN) (Short Note)

    • Years: WBUT 2016, 2019 (from CNCS-62), 2019 (from CNCS-135) (Frequency: 3)

  10. ISDN (Short Note)

    • Years: WBUT 2006, 2007, 2011 (Frequency: 3)

  11. NAT (Short Note)

    • Years: WBUT 2016, 2018, 2019 (Frequency: 3)

  12. IPv6 (Short Note)

    • Years: WBUT 2016, 2018, 2019 (Frequency: 3)

  13. ARP packet format (Short Note)

    • Years: WBUT 2017, 2018, 2019 (Frequency: 3)

  14. ICMP (Short Note)

    • Years: WBUT 2017, 2018, 2019 (Frequency: 3)

  15. RSA Algorithm (Short Note)

    • Years: WBUT 2006, 2007, 2017 (Frequency: 3)

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