Computer Networks
Concepts of Layering
Marks 1Marks 2
Data Link Layer and Switching
Marks 1Marks 2
Network Layer
Marks 1Marks 2
Application Layer Protocol
Marks 1Marks 2
Routing Algorithm
Marks 1Marks 2
TCP UDP Sockets and Congestion Control
Marks 1Marks 2
Lan Technologies and Wi-Fi
Marks 1Marks 2
Network Security
Marks 1Marks 2
1
GATE CSE 2018
Numerical
+1
-0
Consider a long-lived $$TCP$$ session with an end-to-end bandwidth of $$1$$ $$Gbps$$ ($$ = {10^9}\,$$ bits-persecond). The session starts with a sequence number of $$1234.$$ The minimum time (in seconds, rounded to the closest integer) before this sequence number can be used again is _______.
Your input ____
2
GATE CSE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Consider the following statements.

I. TCP connections are full duplex
II. TCP has no option for selective acknowledgment
III. TCP connections are message streams

A
Only I is correct
B
Only I and III are correct
C
Only II and III are correct
D
All of I, II and III are correct
3
GATE CSE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv according to UNIX socket APL
A
listen, accept, bind recv
B
bind, listen, accept, recv
C
bind, accept, listen, recv
D
accept, listen, bind recv
4
GATE CSE 2015 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Suppose two hosts use a TCP connection to transfer a large file. Which of the following statements is/are FALSE with respect to the TCP connection?

I. If the sequence number of a segment is m, then the sequence number of the subsequent segment is always m + 1.
II. If the estimated round trip time at any given point of time is t sec, the value of the retransmission timeout is always set to greater than or equal to t sec.
III. The size of the advertised window never changes during the course of the TCP connection.
IV. The number of unacknowledged bytes at the sender is always less than or equal to the advertised window

A
III only
B
I and III only
C
I and IV only
D
II and IV only
GATE CSE Subjects
Theory of Computation
Operating Systems
Algorithms
Digital Logic
Database Management System
Data Structures
Computer Networks
Software Engineering
Compiler Design
Web Technologies
General Aptitude
Discrete Mathematics
Programming Languages
Computer Organization