WB JECA MCA Computer Networks Previous Year Questions (PYQs) – Page 2 of 4
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In the TCP/IP model, ______ is responsible for determining the best path for data packets to travel across interconnected networks.
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Solution
Internet layer handles routing.
Which type of routing automatically changes its path selection based on current network conditions like congestion or link failures?
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Solution
Adaptive routing adjusts based on network conditions.
Which of the following protocols is connectionless and provides unreliable data delivery?
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Solution
IP and UDP are connectionless and unreliable.
Which field in the IPv4 header helps uniquely identify fragments of a datagram so they can be reassembled correctly?
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Solution
Identification field helps in fragment reassembly.
The IP address 10.5.6.7 belongs to which class?
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Solution
Class A range: 1–126.
Which application layer protocol is primarily used for sending email?
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Solution
SMTP is used for sending emails.
What does a firewall primarily do?
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Solution
Firewall filters incoming/outgoing traffic.
Which attack involves intercepting and altering communication between two parties without their knowledge?
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Solution
MITM attack intercepts communication.
Which device is used to connect multiple devices within the same network segment and operates at the data link layer?
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Solution
Switch works at data link layer.
The number of cross point needed for 10 lines cross point switch in full duplex in nature and there are no self connection is
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Solution
Crosspoints = n(n−1)/2 = 45.
WB JECA MCA
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and More.
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