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GATE 2020 : Computer Networks Quiz 8

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Question 1

In the IPv4, which address is reserved and are not used as host ip address on IP networks?

Question 2

An Internet Service Provider (ISP) has the following chunk of CIDR-based IP addresses available with it: 245.248.128.0/20. The ISP wants to give half of this chunk of addresses to Organization A, and a quarter to Organization B, while retaining the remaining with itself. Which of the following is a valid allocation of addresses to A and B?

Question 3

In an IPv4 datagram, the M bit is 0, the value of HLEN is 10, the value of total length is 400 and the fragment offset value is 300. The position of the datagram, the sequence numbers of the first and the last bytes of the payload, respectively are

Question 4

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
(ii) Checksum
(iii) Fragment Offset

Question 5

Find the maximum number of hosts available for following IP address:
152.92.0.0

Question 6

Consider a CIDR IP address 178.168.0.0/14. Find total number of valid hosts.
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