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Computer Networks
Concepts of Layering
Marks 1Marks 2
Data Link Layer and Switching
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Network Layer
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Application Layer Protocol
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Routing Algorithm
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TCP UDP Sockets and Congestion Control
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Lan Technologies and Wi-Fi
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Network Security
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1
GATE CSE 2024 Set 2
Numerical
+2
-0

Consider an Ethernet segment with a transmission speed of $10^8$ bits/sec and a maximum segment length of 500 meters. If the speed of propagation of the signal in the medium is $2 \times 10^8$ meters/sec, then the minimum frame size (in bits) required for collision detection is _________

Your input ____
2
GATE CSE 2021 Set 2
MCQ (Single Correct Answer)
+2
-0.66
Consider the cyclic redundancy check (CRC) based error detecting scheme having the generator polynomial X3 + X + 1. Suppose the message m4m3m2m1m0 = 11000 is to be transmitted. Check bits c2c1c0 are appended at the end of the message by the transmitter using the above CRC scheme. The transmitted bit string is denoted by m4m3m2m1m0c2c1c0. The value of the check bit sequence c2c1c0 is 
A
101
B
100
C
111
D
110
3
GATE CSE 2021 Set 1
MCQ (Single Correct Answer)
+2
-0.67

Assume that a 12-bit Hamming codeword consisting of 8-bit data and 4 check bits is d8d7d6d5c8d4d3d2c4d1c2c1, where the data bits and the check bits are given in the following tables:

Data bits

d8

d7

d6

d5

d4

d3

d2

d1

1

1

0

x

0

1

0

1
 

c8

c4

c2

c1

Y

0

1

0

Which one of the following choices gives the correct values of x and y?
A
x is 1 and y is 0.
B
x is 1 and y is 1.
C
x is 0 and y is 1.
D
x is 0 and y is 0.
4
GATE CSE 2016 Set 2
Numerical
+2
-0
Consider a 128 × 103 bits/second satellite communication link with one way propagation delay of 150 milliseconds. Selective retransmission (repeat) protocol is used on this link to send data with a frame size of 1 kilobyte. Neglect the transmission time of acknowledgement. The minimum number of bits required for the sequence number field to achieve 100% utilization is _________.
Your input ____
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Questions Asked from Marks 2
GATE CSE 2025 Set 2 (1) GATE CSE 2024 Set 2 (1) GATE CSE 2021 Set 2 (1) GATE CSE 2021 Set 1 (1) GATE CSE 2016 Set 2 (1) GATE CSE 2016 Set 1 (1) GATE CSE 2015 Set 3 (2) GATE CSE 2015 Set 2 (1) GATE CSE 2015 Set 1 (1) GATE CSE 2014 Set 2 (1) GATE CSE 2014 Set 1 (1) GATE CSE 2009 (3) GATE CSE 2007 (2) GATE CSE 2006 (2) GATE CSE 2005 (1) GATE CSE 2003 (1)
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