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Computer Networks
Concepts of Layering
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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 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Host A (on TCP/IPv4 network A) sends an IP datagram D to host B (also on TCP/IPv4 network B). Assume that no error occurred during the transmission of D. When D reaches B, which of the following IP header field(s) may be different from that of the original datagram D?

(i) TTL
(ii) Checksum
(iii) Fragment Offset
A
(i) only
B
(i) and (ii) only
C
(ii) and (iii) only
D
(i), (ii) and (iii)
2
GATE CSE 2012
MCQ (Single Correct Answer)
+1
-0.3
In the IPv4 addressing format, the number of networks allowed under Class C addresses is
A
214
B
27
C
221
D
224
3
GATE CSE 2010
MCQ (Single Correct Answer)
+1
-0.3
One of the header fields in an IP datagram is the Time to Live (TTL) field. Which of the following statements best explains the need for this field?
A
It can be used to prioritize packets
B
It can be used to reduce delays
C
It can be used to optimize throughput
D
It can be used to prevent packet looping
4
GATE CSE 2006
MCQ (Single Correct Answer)
+1
-0.3
For which one of the following reasons does Internet Protocol (IP) use the time-to-live (TTL) field in the IP datagram header?
A
Ensure packets reach destination within that time
B
Discard packets that reach later than that time
C
Prevent packets from looping indefinitely
D
Limit the time for which a packet gets queued in intermediate routers.
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Questions Asked from Marks 1
GATE CSE 2025 Set 2 (2) GATE CSE 2024 Set 2 (3) GATE CSE 2024 Set 1 (1) GATE CSE 2022 (1) GATE CSE 2021 Set 1 (1) GATE CSE 2020 (1) GATE CSE 2015 Set 1 (1) GATE CSE 2014 Set 3 (1) GATE CSE 2012 (1) GATE CSE 2010 (1) GATE CSE 2006 (1) GATE CSE 2005 (2) GATE CSE 2004 (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