Q. The routing table of a router is shown below:

Destination Sub net mask Interface
128.75.43.0 255.255.255.0 Eth0
128.75.43.0 255.255.255.128 Eth1
192.12.17.5 255.255.255.255 Eth3
default Eth2

On which interfaces will the router forward packets addressed to destinations 128.75.43.16 and 192.12.17.10 respectively?

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Q. Which of the following assertions is FALSE about the Internet Protocol (IP) ?

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Q. Routers forward a packet using forwarding table entries. The network address of incoming packet may match multiple entries. How routers resolve this?

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

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Q. In the network 200.10.11.144/27, the fourth octet (in decimal) of the last IP address of the network which can be assigned to a host is ________.

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Q. If a Company require 60 hosts then What is the best possible subnet mask?

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Q. In class C , if subnet mask is 255.255.255.224, then calculates number of subnet?

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Q. A subnet has been assigned a subnet mask of 255.255.255.192. What is the maximum number of hosts that can belong to this subnet?

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Q. A host is connected to a Department network which is part of a University network. The University network, in turn, is part of the Internet. The largest network in which the Ethernet address of the host is unique is:

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Q. In TCP, a unique sequence number is assigned to each

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Q. Which of the following objects can be used in expressions and scriplets in JSP (Java Server Pages) without explicitly declaring them?

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

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Q. Suppose that the maximum transmit window size for a TCP connection is 12000 bytes. Each packet consists of 2000 bytes. At some point of time, the connection is in slow-start phase with a current transmit window of 4000 bytes. Subsequently, the transmitter receives two acknowledgements. Assume that no packets are lost and there are no time-outs. What is the maximum possible value of the current transmit window?

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Q. Traceroute reports a possible route that is taken by packets moving from some host A to some other host B. Which of the following options represents the technique used by traceroute to identify these hosts

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Q. Count to infinity is a problem associated with

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Q. In a communication network, a packet of length L bits takes link L1 with a probability of p1or link L2 with a probability of p2. Link L1 and L2 have bit error probability of b1 and b2 respectively. The probability that the packet will be received without error via either L1 or L2 is

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Q. A company has a class C network address of 204.204.204.0. It wishes to have three subnets, one with 100 hosts and two with 50 hosts each. Which one of the following options represents a feasible set of subnet address/subnet mask pairs?

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Q. Assume that "host1.mydomain.dom" has an IP address of 145.128.16.8. Which of the following options would be most appropriate as a subsequence of steps in performing the reverse lookup of 145.128.16.8? In the following options "NS" is an abbreviation of "nameserver".

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Q. An IP datagram of size 1000 bytes arrives at a router. The router has to forward this packet on a link whose MTU (maximum transmission unit) is 100 bytes. Assume that the size of the IP header is 20 bytes. The number of fragments that the IP datagram will be divided into for transmission is :

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Q. Which of the following statements is TRUE ?

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