1
GATE CSE 2024 Set 1
MCQ (More than One Correct Answer)
+1
-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?

A

The sequence number $N_P$ is chosen randomly by P

B

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

C

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

D

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

2
GATE CSE 2023
MCQ (Single Correct Answer)
+1
-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.

A
Longer link length and lower transmission rate
B
Longer link length and higher transmission rate
C
Shorter link length and lower transmission rate
D
Shorter link length and higher transmission rate
3
GATE CSE 2021 Set 2
MCQ (Single Correct Answer)
+1
-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?
A
SYN bit = 0, SEQ number = X + 1, ACK bit = 0, ACK number = Y, FIN bit = 1
B
SYN bit = 1, SEQ number = X + 1, ACK bit = 0, ACK number = Y, FIN bit = 0
C
SYN bit = 1, SEQ number = Y, ACK bit = 1, ACK number = X, FIN bit = 0
D
SYN bit = 1, SEQ number = Y, ACK bit = 1, ACK number = X + 1, FIN bit = 0
4
GATE CSE 2019
MCQ (Single Correct Answer)
+1
-0.33
Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?
A
IMAP, SMTP
B
SMTP, POP3
C
IMAP, POP3
D
SMTP, MIME
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