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CCNA 2 version 4 CHAPTER 6

1
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



2
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



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



4
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


5
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.



6
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.



7
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.

8


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



9
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


10
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.


11


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


12
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



13
What device enables an ISP to connect with other ISPs to transfer data?

border gateway router

DSLAM

web server

interior router



14
Which protocol is an exterior routing protocol?

BGP

EIGRP

OSPF

RIP



15
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






16
Which command is used to view the RIP routing protocol settings and configuration?

show version

show ip route

show interface

show ip protocols

debug ip rip config

show ip rip database



17
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.



18
Which routing protocol is used to exchange data between two different ISPs?

BGP

EIGRP

OSPF

RIP v2



19


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



20
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



21
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



22
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



23
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.



24
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

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