Networks · Sockets, UDP checksum & Stop-and-Wait

4 questions · 14 marks · 1 paper

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Computer Networks

Sockets, UDP checksum & Stop-and-Wait

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ1 Mark·Choose one option
Key ↓
In a TCP connection, a socket is uniquely identified only by the Source IP and Destination IP.
1. ATrue
2. BFalse
Q2MCQ4 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
5. E
Q3MCQ4 Marks·Choose one option
Key ↓
A link has a round-trip time (RTT) of 10 ms and a packet transmission time of 90 ms. In Stop-and- Wait ARQ, what percentage of the time is the sender actually transmitting (i.e., the utilization of the link)?
1. A50%
2. B75%
3. C90%
4. D95%
Q4NAT5 Marks·Write the number
Key ↓
Your answer:

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1B

Q2C

Q3C

Q42.86

Questions and answer keys are reproduced from the official IIT Madras BS papers. Topics and repeated question types are BTechi’s own grouping. BTechi is not affiliated with IIT Madras.