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DsmbISP Chapter 6 Exam Answers


Q.1 Which command is used to view the RIP routing protocol settings and configuration?

 show version
 show ip route
 show interface
 show ip protocols


Q.2 Refer to the exhibit. What is the maximum number of RIP routers that could separate HostA and HostB and still leave the hosts with connectivity to each other?

 14
 15
 16
 17


Q.3 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


Q.4 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


Q.5 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.


Q.6 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


Q.7 Which routing protocol is used to exchange data between two different ISPs?

 BGP
 EIGRP
 OSPF
 RIP v2



Q.8 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



Q.9 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


Q.10 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.

Q.11 What is the purpose of the network command used when 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 which networks on the router will send and receive 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


Q.12 Which command would a network administrator use to determine if the routers in an enterprise have learned about a newly added network?

 router# show ip address
 router# show ip route
 router# show ip networks
 router# show ip interface brief
 router# debug ip protocol
 router# debug rip update


Q.13 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.


Q.14 What device enables an ISP to connect with other ISPs to transfer data?

 border gateway router
 DSLAM
 web server
 interior router


Q.15 Which command will display RIP routing updates as they are sent and received?

 show ip route
 show ip rip
 debug ip rip
 show ip protocols
 show ip rip database


Q.16 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


Q.17 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


Q.18 Which command will display RIP activity as it occurs on a router?

 debug ip rip
 show ip route
 show ip interface
 show ip protocols
 debug ip rip config
 show ip rip database


Q.19 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.


Q.20 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.


Q.21 Which two statements or sets of statements describe differences between link-state and distance vector routing protocols? (Choose two.)

 Link-state routing protocols routinely use more bandwidth for updates than do distance vector routing protocols.
 Distance vector routing protocols update all routers at one time. Link-state routing protocols update one router at a time.
 Link-state routers only know about directly connected routers. Distance vector routers know about every router in the network.
 Link-state routing protocols update when a change is made. A network using distance vector routing protocols only updates at a specific interval.
 Distance vector routing protocols have limited information about the entire network. Link state routing protocols know about all routers in the network.
 In case of similar topologies, networks using link-state routing protocols typically converge more rapidly than do networks using distance vector routing protocols.


Q.22 Which protocol is an exterior routing protocol?

 BGP
 EIGRP
 OSPF
 RIP


Q.23 Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)

 Ping
 show arp
 Traceroute
 show ip route
 show interface
 show cdp neighbor detail


Q.24 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

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