Chapter 6

What is the purpose of a routing protocol? It is used to build and maintain ARP tables. It provides a method for segmenting and reassembling data packets. It allows an administrator to devise an addressing scheme for the network. It allows a router to share information about known networks with other routers. It provides a procedure for encoding and decoding data into bits for packet forwarding. Scoring Rule For: correctness of response 2 points for Option 4 0 points for any other option Max Value = 2 Earned Value = 2

Why is fast convergence desirable in networks that use dynamic routing protocols? Routers will not allow packets to be forwarded until the network has converged. Hosts are unable to access their gateway until the network has converged. Routers may make incorrect forwarding decisions until the network has converged. Routers will not allow configuration changes to be made until the network has converged. Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 0

In which situation would a company register for its own autonomous system number (ASN)? when the company's ISP adds connection points to the Internet when additional routers are added to the corporate internetwork when more than one interior routing protocol is used when the company uses two or more ISPs Scoring Rule For: correctness of response 2 points for Option 4 0 points for any other option Max Value = 2 Earned Value = 2

What term refers to a group of networks that uses the same internal routing policies and is controlled by a single administrative authority? Internet intranet virtual private network autonomous system Scoring Rule For: correctness of response 2 points for Option 4 0 points for any other option Max Value = 2 Earned Value = 2 Which protocol is an exterior routing protocol? BGP EIGRP OSPF RIP Scoring Rule For: correctness of response 2 points for Option 1 0 points for any other option Max Value = 2 Earned Value = 2 What device enables an ISP to connect with other ISPs to transfer data? border gateway router DSLAM web server interior router Scoring Rule For: correctness of response 2 points for Option 1 0 points for any other option Max Value = 2 Earned Value = 2 Which part of an IP packet does the router use to make routing decisions? source IP address source MAC address destination IP address destination MAC address Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 2 What statement is true regarding an AS number? AS numbers are controlled and registered for Internet use. Interior routing protocols require registered AS numbers. ISPs require all customers to have registered AS numbers. All routers at an ISP must be assigned the same AS number. Scoring Rule For: correctness of response 2 points for Option 1 0 points for any other option Max Value = 2 Earned Value = 0 Which routing protocol is used to exchange data between two different ISPs? BGP EIGRP OSPF RIP v2 Scoring Rule For: correctness of response 2 points for Option 1 0 points for any other option Max Value = 2 Earned Value = 0 Consider this routing table entry: R 172.16.1.0/24 [120/1] via 200.1.1.1 00:00:27 Serial0/1 What type of route is this? a static route a default route a RIP route an OSPF route an EIGRP route a directly-connected route Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 0 Refer to the exhibit. If all routers are running RIP and network 10.0.0.0 goes down, when will R3 learn that the network is no longer available? in 30 seconds in 60 seconds in 90 seconds immediately Scoring Rule For: correctness of response 2 points for Option 4 0 points for any other option Max Value = 2 Earned Value = 2 What information is included in RIPv2 routing updates that is not included in RIPv1 updates? metric subnet mask area identification hop count autonomous system number Scoring Rule For: correctness of response 2 points for Option 2 0 points for any other option Max Value = 2 Earned Value = 0 What two types of businesses would benefit from registering as their own autonomous systems? (Choose two.) a home business with one ISP connection a global business with connections to multiple local ISPs a medium-sized nationwide business with Internet connectivity through different ISPs a large enterprise with two connections to the same ISP a small ISP with a single Internet connection through a larger ISP Scoring Rule For: correctness of response Option 2 and Option 3 are correct. 1 point for each correct option. 0 points if more options are selected than required. Max Value = 2 Earned Value = 2 Which two statements describe static routes? (Choose two.) They are created in interface configuration mode. They require manual reconfiguration to accommodate network changes. They automatically become the default gateway of the router. They are identified in the routing table with the prefix S They are automatically updated whenever an interface is reconfigured or shutdown. Scoring Rule For: correctness of response Option 2 and Option 4 are correct. 1 point for each correct option. 0 points if more options are selected than required. Max Value = 2 Earned Value = 2 What is the difference between interior and exterior routing protocols? Exterior routing protocols are only used by large ISPs. Interior routing protocols are used by small ISPs. Interior routing protocols are used to route on the Internet. Exterior routing protocols are used inside organizations. Exterior routing protocols are used to administer a single autonomous system. Interior routing protocols are used to administer several domains. Interior routing protocols are used to communicate within a single autonomous system. Exterior routing protocols are used to communicate between multiple autonomous systems. Scoring Rule For: correctness of response 2 points for Option 4 0 points for any other option Max Value = 2 Earned Value = 0 Refer to the exhibit. Which configuration command or commands contributed to the output that is shown? routerA(config-router)# no version 2 routerA(config)# interface fa0/0 routerA(config-if)# ip address 172.19.0.0 255.255.0.0 routerA(config-router)# network 192.168.3.0 routerA(config)# no ip default-gateway Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 2 Refer to the exhibit. All of the routers are running RIP. There are two paths from router A to the 192.168.3.0 network. Based on the output of the show ip route command on router A, which route was entered into the routing table and why? A,B,C,D because it has the lowest administrative distance A,E,F,G,D because it has the lowest administrative distance A,B,C,D because it has the lowest metric A,E,F,G,D because it has the lowest metric Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 0 What is the purpose of the network command in configuring RIP? to specify whether RIPv1 or RIPv2 will be used as the routing protocol to allow the router to monitor RIP updates that occur on other routers to identify the directly connected networks that will be announced in RIP updates to configure the IP address on an interface that will use RIP to identify all of the remote networks that should be reachable from the router Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 0 Refer to the exhibit. If connectivity between the two hosts is maintained, what is the maximum number of RIP routers that can be in the path from HostA to HostB? 14 15 16 17 Scoring Rule For: correctness of response 2 points for Option 2 0 points for any other option Max Value = 2 Earned Value = 2 Refer to the exhibit. Router B receives a packet with a destination address of 10.16.1.97. What will router B do? drop the packet use the default route forward the packet via the route to 10.16.1.0 forward the packet via the route to 10.16.1.64 Scoring Rule For: correctness of response 2 points for Option 2 0 points for any other option Max Value = 2 Earned Value = 2 A network is converged and the routing tables are complete. When a packet needs to be forwarded, what is the first criterion used to determine the best path in the routing table? the route with the highest bandwidth the route with the smallest administrative distance the route with the longest address and mask match to the destination the route with the best combination of administrative distance and lowest cost Scoring Rule For: correctness of response 2 points for Option 3 0 points for any other option Max Value = 2 Earned Value = 0