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Which of the following routing technique/techniques is/are used in distributed systems? (a) Fixed Routing (b) Virtual Routing (c) Dynamic Routing
Which statement is true regarding classless routing protocols?
1. The use of discontiguous networks is not allowed.
2. The use of variable length subnet masks is permitted.
3. RIPv1 is a classless routing protocol.
4. IGRP supports classless routing within the same autonomous system.
5. RIPv2 supports classless routing.
Consider a computer network using the distance vector routing algorithm in its network layer. The partial topology of the network is as shown below. The objective is to find the shortest-cost path from the router R to routers P and Q. Assume that R does not initially know the shortest routes to P and Q. Assume that R has three neighbouring routers denoted as X, Y, and Z. During one iteration, R measures its distance to its neighbours X, Y, and Z as 3, 2, and 5, respectively. Router R gets routing vectors from its neighbours that indicate that the distance to router P from routers X, Y, and Z are 7, 6, and 5, respectively. The routing vector also indicates that the distance to router Q from routers X, Y, and Z are 4, 6, and 8, respectively. Which of the following statement(s) is/are correct with respect to the new routing table of R, after updation during this iteration ? 
Consider the following statements about the routing protocols. Routing Information Protocol (RIP) and Open Shortest Path First (OSPE) 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?
Which two of the following are true regarding the distance-vector and link-state routing protocols?
1. Link state sends its complete routing table out all active interfaces on periodic time intervals.
2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.
3. Link state sends updates containing the state of its own links to all routers in the internetwork.
4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.
Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?
Consider routing table of an organization’s router shown below: Subnet Number  Subnet Mask Next Hop 12.20.164.0 255.255.252.0 R1 12.20.170.0 255.255.254.0 R2 12.20.168.0  255.255.254.0  Interface 0 12.20.166.0 255.255.254.0 Interface 1  default   R3 Which of the following prefixes in CIDR notation can be collectively used to correctly aggregate all of the subnets in the routing table?
What is routing algorithm used by OSPF routing protocol?
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?