NPTEL Ethical Hacking Week 2 Assignment Answers 2025
1. Why do we need fragmentation?
a. To increase transmission speed.
b. Due to varying MTU across networks.
c. To improve encryption.
d. To compress packet.
Answer : See Answers
2. IP fragmentation is typically done by:
a. Source Host
b. Destination Host
c. Intermediate Routers
d. Hubs
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3. For reassembling the fragmented packets at the final destination, which of the following header field(s) is(are) used?
a. Fragment offset
b. Flags
c. Port number
d. Checksum
e. Identification
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4. An IP packet arrives at the final destination with the D flag set as 0, M flag set as 1 and offset is set to 0. Which of the following statements is true about the packet?
a. The packet has not been fragmented.
b. The packet has been fragmented and it is the first fragment.
c. The packet has been fragmented and it is the last fragment.
d. None of these.
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5. In an IP packet, the value of HLEN is 15, and the total size of IP packet is 2000 bytes. The
number of data bytes in the packet will be________________.
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6. Which address classes do the IP addresses 128.0.1.3 and 193.11.23.10 belong to?
a. Class A and Class B
b. Class B and Class C
c. Class C and Class D
d. Class A and Class C
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7. Which IP addresses are reserved for private use?
a. 10.x.x.x
b. 172.32.x.x
C. 192.168.x.x
d. 128.x.x.x
Answer :
8. What does a TCP segment with SYN =1 and ACK = 0 indicate?
a. Connection termination
b. Connection reset
c. Keep-alive signal
d. Initial connection request
e. Connection acknowledgement
Answer :
9. What is the size of UDP header?
a. 16 bits
b. 16 bytes
C. 8 bits
d. 8 bytes
Answer :
10. What is the subnet address if the destination IP address is 192.168.77.213 and the subnet mask is 255.255.252.0?
a. 192.168.76.0
b. 192.168.76.213
c. 192.168.77.0
d. 192.168.0.0
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