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알고리즘
CCNA 2 - Module 7 Exam 본문
1 Which command or set of commands will stop the RIP routing process?
• RouterB(config)# router rip
RouterB(config-router)# shutdown
• RouterB(config)# router rip
RouterB(config-router)# network no 192.168.2.0
• RouterB(config)# no router rip
• RouterB(config)# router no rip
2 When does a distance vector routing protocol set a hold-down timer on a route?
• when the metric value of the route decreases
• when the route is marked as inaccessible
• when the metric value for the route improves
• when a regular update is received from a neighboring router
3 Which of the following functions are performed by a router as routing information travels through the network? (Choose two.)
• advertise supported applications
• identify new destinations
• calculate packet speed
• verify network scalability
• identify invalid networks
4 What do distance vector algorithms require each router in the network to send?
• a partial routing table to each router in the LAN
• a partial routing table to each router in the WAN
• the entire routing table to each neighboring router
• the entire routing table to each router in the autonomous system
5
What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.)
• RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA.
• During the next update interval, RouterB will send a RIP update out both ports that includes the inaccessible network.
• During the next update interval, RouterC will send an update to RouterB stating that network 114.125.16.0 is accessible in 2 hops.
• Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB.
• RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterC.
6
Refer to the exhibit. Assuming default settings are configured, which routing protocol has been configured on the router?
• OSPF
• RIP
• EIGRP
• BGP
• Static
7 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
8 Which of the following methods does split horizon use to reduce incorrect routing information?
• Routing updates are split in half to reduce the update time.
• Information learned from one source is not distributed back to that source.
• New route information must be learned from multiple sources to be accepted.
• The time between updates is split in half to speed convergence.
• New route information is suppressed until the system has converged.
9
According to the router output from the show ip route command shown above, which of the following statements are true? (Choose two.)
• The metric to network 192.168.8.0 is 24.
• The hop count to a device on network 192.168.8.0 is 2.
• The total path cost to network 192.168.4.0 is the default value of 16.
• The logical address of the next router for network 192.168.1.0 is 192.168.3.1.
• The devices on network 192.168.5.0 cannot be reached as indicated by the 'C' label.
10 How would an administrator configure a static route for use if a primary route failed?
• configure the route with a metric greater than the default value
• configure the route and the router will activate it as needed
• configure the route to activate by using the redistribute static command
• configure the route with an administrative distance greater than the default value
11 Which statements describe RIP? (Choose three.)
• The maximum metric value is 255 hops.
• The maximum metric value is 15 hops.
• Routing updates occur every 30 seconds.
• Routing updates occur every 90 seconds.
• It is a distance vector routing protocol.
• It is a link state routing protocol.
12 A router has routes to several subnets of a classful network in its routing table. A default route is defined on the router but the ip classless command is disabled. If the router receives packets for a subnet that is not in its routing table but is in the same classful network as the other subnets, what will happen to the packets?
• The packets will be forwarded using the default route.
• The packets will be forwarded using a route to one of the other subnets of the classful network.
• A nonreachable message will be returned to the source.
• The packets will be discarded.
• The router will generate a new route to the subnetted network.
13
The administrator of the network depicted in the graphic would like to decrease the network's convergence time. How can this be accomplished?
• disable split horizon on the routers
• increase the update interval on the routers
• change the RIP holddown timer to 96 seconds
• change the RIP holddown timer to 226 seconds
14
If the passive interface command is enabled on the fa0/0 interface of Router E, which statements are true? (Choose two.)
• Router E will send all routing updates via interface fa0/0.
• Router E will ignore all routing updates learned via interface fa0/0.
• Router E will use routing updates learned via interface fa0/0.
• Router E will not send routing updates via interface fa0/0.
15 Which statements describe load balancing when RIP is configured as the routing protocol? (Choose two.)
• A router is allowed to take advantage of multiple best paths to a given destination.
• RIP uses the round robin approach in load balancing.
• RIP load balancing selects a single path to forward all data to the destination even though equal parallel paths exist.
• RIP load balancing is based on bandwidth first and then the hop count.
• Only one path to a destination can be statically assigned or dynamically calculated.
16
The graphic shows a network that is configured to use RIP routing protocol. Router2 detects that the link to Router1 has gone down. It then advertises the network for this link with a hop count metric of 16. Which routing loop prevention mechanism is in effect?
• split horizon
• error condition
• hold-down timer
• route poisoning
• count to infinity
17
Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks?
• RouterB# router rip
RouterB(router)# network 210.36.7.0
RouterB(router)# network 220.17.29.0
RouterB(router)# network 211.168.74.0
• RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 211.168.74.0
RouterB(config-router)# network 199.84.32.0
• RouterB(config)# configure router rip
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 199.84.32.0
RouterB(config-router)# network 211.168.74.0
• RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 211.168.74.0
• RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 220.17.29.0
18 When a routing table update is received by a router in a distance vector network, which of the following occurs?
• The hop count metrics for the enclosed routes are incremented.
• The update is forwarded to the gateway router for verification.
• Path entries are checked for routing loops.
• The hop count metrics for the enclosed routes are decremented.
• Static routes are updated with the new information.
19 The following line was displayed in the output of the show ip route command:
192.168.3.0/24 [120/2] via 192.168.2.2, 00:00:30, Serial0/0
What is the administrative distance of the enabled routing protocol?
• 2
• 30
• 100
• 120
20 When does RIP send routing table updates? (Choose two.)
• periodically, every 30 seconds
• periodically, every 60 seconds
• periodically, every 90 seconds
• if optionally configured, when topology changes occur (triggered-update)
21 Which of the following can exist in a distance vector network that has not converged? (Choose three.)
• routing loops
• inconsistent traffic forwarding
• no traffic forwarding until system converges
• inconsistent routing table entries
• routing table updates sent to wrong destinations
22 What happens to a static route entry in a routing table when the outgoing interface is not available?
• The route is removed from the table.
• The router polls neighbors for a replacement route.
• The route remains in the table because it was defined as static.
• The router redirects the static route to compensate for the loss of the next hop device.
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