Computer Network
Q161.
Consider the following statements about the routing protocols, Routing Information Protocol (RIP) and Open Shortest Path First (OSPF) in an IPv4 network. I. RIP uses distance vector routing II. RIP packets are sent using UDP III. OSPF packets are sent using TCP IV. OSPF operation is based on link-state routing Which of the statements above are CORRECT?Q162.
Consider three machines M, N and P with IP addresses 100.10.5.2, 100.10.5.5 and 100.10.5.6 respectively. The subnet mask is set to 255.255.255.252 for all the three machines. Which one of the following is true?Q163.
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 100bytes. Assume that the size of the IP header is 20bytes. The number of fragments that the IP datagram will be divided into for transmission is _________.Q164.
Consider an IP packet with a length of 4,500 bytes that includes a 20-byte IPv4 header and a 40-byte TCP header. The packet is forwarded to an IPv4 router that supports a Maximum Transmission Unit (MTU) of 600 bytes. Assume that the length of the IP header in all the outgoing fragments of this packet is 20 bytes. Assume that the fragmentation offset value stored in the first fragment is 0. The fragmentation offset value stored in the third fragment is _______.Q165.
Match with the suitable one:\begin{array}{|l|l|l|l|} \hline & \text { List-1 } & & \text { List-2 } \\ \hline \text { (a) } & \text { Multicast group membership } & \text { i. } & \text { Distance Vector routing } \\ \hline \text { (b) } & \text { Interior gateway protocol } & ii . & \text { IGMP } \\ \hline \text { (c) } & \text { Exterior gateway protocol } & iii . & \text { OSPF } \\ \hline \text { (d) } & \text { RIP } & iv . & \text { BGP } \\ \hline \end{array}Q167.
The maximum number of IPv4 router addresses that can be listed in the record route (RR) option field of an IPv4 header is _________.Q169.
A router uses the following routing table:\begin{array}{|l|l|l|} \hline \text { Destination } & \text { Mask } & \text { Interface } \\ \hline 144.16 .0 .0 & 255.255 .0 .0 & \text { eth0 } \\ \hline 144.16 .64 .0 & 255.255 .224 .0 & \text { eth1 } \\ \hline 144.16 .68 .0 & 255.255 .255 .0 & \text { eth2 } \\ \hline 144.16 .68 .64 & 255.255 .255 .224 & \text { eth3 } \\ \hline \end{array}Packet bearing a destination address 144.16.68.117 arrives at the router. On which interface will it be forwarded?Q170.
In a class B subnet, we know the IP address of one host and the mask as given below:IP address: 125.134.112.66Mask: 255.255.224.0What is the first address(Network address)?