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Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between Pand Ris 1500 bytes, and between Rand Qis 820 bytes. A TCP segment of size 1400 bytes was transferred from P to Q through R, with IP identification value as 0x1234. Assume that the IP header size is 20 bytes. Further, the packet is allowed to be fragmented, i.e., Don't Fragment (DF) flag in the IP header is not set by P. Which of the following statements is/are correct? (a) Two fragments are created at R and the IP datagram size carrying the second fragment is 620 bytes. (b) If the second fragment is lost, P is required to resend the whole TCP segment.

Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between Pand Ris 1500 bytes, and between Rand Qis 820 bytes. A TCP segment of size 1400 bytes was transferred from P to Q through R, with IP identification value as 0x1234. Assume that the IP header size is 20 bytes. Further, the packet is allowed to be fragmented, i.e., Don't Fragment (DF) flag in the IP header is not set by P. Which of the following statements is/are correct? (a) Two fragments are created at R and the IP datagram size carrying the second fragment is 620 bytes. (b) If the second fragment is lost, P is required to resend the whole TCP segment.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between Pand Ris 1500 bytes, and between Rand Qis 820 bytes. A TCP segment of size 1400 bytes was transferred from P to Q through R, with IP identification value as 0x1234. Assume that the IP header size is 20 bytes. Further, the packet is allowed to be fragmented, i.e., Don't Fragment (DF) flag in the IP header is not set by P, Which of the following statements is/are correct? (a) Two fragments are created at R and the IP datagram size carrying the second fragment is 620 bytes. (b) If the second fragment is lost, P is required to resend the whole TCP segment. (c) TCP destination port can be determined by analysing only the second fragment. (d) If the second fragment is lost, R will resend the fragment with the IP identification value 0x1234
Transcribed Image Text:Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between Pand Ris 1500 bytes, and between Rand Qis 820 bytes. A TCP segment of size 1400 bytes was transferred from P to Q through R, with IP identification value as 0x1234. Assume that the IP header size is 20 bytes. Further, the packet is allowed to be fragmented, i.e., Don't Fragment (DF) flag in the IP header is not set by P, Which of the following statements is/are correct? (a) Two fragments are created at R and the IP datagram size carrying the second fragment is 620 bytes. (b) If the second fragment is lost, P is required to resend the whole TCP segment. (c) TCP destination port can be determined by analysing only the second fragment. (d) If the second fragment is lost, R will resend the fragment with the IP identification value 0x1234
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