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Which one of ...

Question

Which one of the following fields of an IP header is NOT modified by a typical IP router?

A

Source address

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B

Checksum

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C

Length

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D

Time to Live (TTL)

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Solution

The correct option is A Source address
Only source address field of IP header is NOT modified by a router.

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Q. In the TCP/IP protocol suite, which one of the following is NOT part of the IP header?

Q. For which one of the following reasons does Internet Protocol(IP) use the time-to-live (TTL) field in the IP datagram header?

Q. Host A (on TCP/IP v4 network A) sends an IP datagram D to host B (also on TCP/IP v4 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
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Q. Host X has IP address 192.168.1.97 and is connected through two routers R1 and R2 to another host Y with IP address 192.168.1.80. RouterR1 has IP addresses 192.168.1.135 and 192.168.1.110. R2 has IP addresses 192.168.1.67 and192.168.1.155.The network used in the network is 255.255.255.224.

Which IP address should X configure its gateway

T w o c o m p u t e r s C_{1} a n d C_{2} a r e c o n f i g u r e d

C_{1}

has IP address 203. 197.2.53 and netmask 255.255.128.0.

C_{2}

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C_{2}

has IP address 203.197.75.201 and netmask 255.255.192.0.
Which one of the following statements is true?

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