GATE CSE 2025 Set 1 | TCP UDP Sockets and Congestion Control Question 1 | Computer Networks

GATE CSE 2025 Set 1

MCQ (More than One Correct Answer)

-0

Consider the 3-way handshaking protocol for TCP connection establishment. Let the three packets exchanged during the connection establishment be denoted as P1, P2 and P3, in order. Which of the following option(s) is/are TRUE with respect to TCP header flags that are set in the packets?

$\mathrm{P3}: \mathrm{SYN}=1, \mathrm{ACK}=1$

$\mathrm{P2}: \mathrm{S Y N=1, A C K=1}$

$\mathrm{P2}: \mathrm{SYN}=0, \mathrm{ACK}=1$

$\mathrm{P1}: \mathrm{SYN = 1}$

GATE CSE 2024 Set 1

MCQ (More than One Correct Answer)

-0

TCP client P successfully establishes a connection to TCP server Q. Let $N_P$ denote the sequence number in the SYN sent from P to Q. Let $N_Q$ denote the acknowledgement number in the SYN ACK from Q to P. Which of the following statements is/are CORRECT?

The sequence number $N_P$ is chosen randomly by P

The sequence number $N_P$ is always 0 for a new connection

The acknowledgement number $N_Q$ is equal to $N_P$

The acknowledgement number $N_Q$ is equal to $N_P + 1$

GATE CSE 2023

MCQ (Single Correct Answer)

-0.33

Suppose two hosts are connected by a point-to-point link and they are configured to use Stop-end-Wait protocol for reliable data transfer. Identify in which one of the following scenarios, the utilization of the link is the lowest.

Longer link length and lower transmission rate

Longer link length and higher transmission rate

Shorter link length and lower transmission rate

Shorter link length and higher transmission rate

GATE CSE 2021 Set 2

MCQ (Single Correct Answer)

-0.33

Consider the three-way handshake mechanism followed during TCP connection establishment between hosts P and Q. Let X and Y be two random 32-bit starting sequence numbers chosen by P and Q respectively. Suppose P sends a TCP connection request message to Q with a TCP segment having SYN bit = 1, SEQ number = X, and ACK bit = 0. Suppose Q accepts the connection request. Which one of the following choices represents the information present in the TCP segment header that is sent by Q to P?

SYN bit = 0, SEQ number = X + 1, ACK bit = 0, ACK number = Y, FIN bit = 1

SYN bit = 1, SEQ number = X + 1, ACK bit = 0, ACK number = Y, FIN bit = 0

SYN bit = 1, SEQ number = Y, ACK bit = 1, ACK number = X, FIN bit = 0

SYN bit = 1, SEQ number = Y, ACK bit = 1, ACK number = X + 1, FIN bit = 0