Computer Networks Unit 2 Notes AKTU (BCS603)

AKTU · BTECH · Semester 6 · Computer Networks · Unit 2 · Notes

AKTU Computer Networks (BCS603) Unit 2 notes for B.Tech Semester 6 – Link Layer and Medium Access Control. Topics: Framing, Error Detection and Correction…

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Unit 2: Link Layer and Medium Access Control – AKTU syllabus topics

  • Framing
  • Error Detection and Correction: Error Detection Techniques, Error Correction Techniques
  • Flow Control Protocols: Elementary Data Link Protocols, Sliding Window Protocols
  • Medium Access Control: Channel Allocation, Multiple Access Protocols, LAN Standards
  • Bridges and Link Layer Switches: Learning Bridge, Spanning Tree Algorithm

Most asked AKTU PYQ questions from Unit 2

  1. Q2b. Explain CSMA/CD with CSMA/CA with diagram. (10 marks, 2022-23)
  2. Q5b. Explain CSMA/CD in detail. (10 marks, 2021-22)
  3. Q4a. Discuss different carrier sense protocols. How are they different than collisions protocols? (10 marks, 2017-18)
  4. Q4b. Explain ARQ Error Control technique, in brief. (7 marks, 2018-19)
  5. Q5b. Senders' data D= 110101, CRC generator polynomial=x3+x+1. Apply CRC algorithm and Perform calculations both at sender and receiver end. (10 marks, 2023-24)
  6. Q4b. Explain all Random-Access protocols. (10 marks, 2023-24)
  7. Q4a. A bit stream 10011101 is transmitted using x3+1 generator polynomial. Generate the CRC code word for this message. (10 marks, 2022-23)
  8. Q4b. Explain error control mechanism in Data link layer and giving example of each method. (10 marks, 2022-23)
  9. Q4b. Sender's data D=11010, CRC generator polynomial= x3+x+1. Apply CRC algorithm and perform calculations both at sender and receiver end. (10 marks, 2021-22)
  10. Q2a. A bit stream x8+x6+x3+x2+x+1 is transmitted using CRC method. The generator polynomial is x4+x2+x+1. Show the actual codeword transmitted at the receiver side. Suppose the third bit from left is inverted during transmission. Show that this error is detected at the receiver end. (7 marks, 2024-25)

AKTU paper codes: BCS603, KCS603, RCS603, NCS601

Other Computer Networks units

Computer Networks previous year papers

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