Set of flashcards CCNA2 Chapters 1-11 (Page 2 of 7)

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Language	Deutsch
Category	Computer Science
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Created / Updated	07.01.2013 / 24.09.2020
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Refer to the exhibit. Which static route should be configured on Router1 so that host A will be able to reach host B on the 172.16.0.0 network?

ip route 192.168.0.0 172.16.0.0 255.255.0.0

ip route 172.16.0.0 255.255.0.0 192.168.0.1

ip route 172.16.0.0 255.255.0.0 S0/0/1

ip route 172.16.0.0 255.255.0.0 S0/0/0

What two devices are responsible for converting the data from the WAN service provider into a form acceptable by the router? (Choose two).

the serial port of the router

a modem

a switch

the ethernet port of the router

a CSU/DSU device

Which of the following is true regarding CDP and the graphic shown?

CDP running on Router D will gather information about routers A, B, C, and E.

By default, Router A will receive CDP advertisements from routers B and C.

If routers D and E are running different routing protocols, they will not exchange CDP information.

Router E can use CDP to identify the IOS running on Router B.

Which two statements describe functions or characteristics of CDP? (Choose two.)

It starts up automatically and allows the device to detect directly connected neighbor devices that use CDP.

It operates at the network layer and allows two systems to learn about each other.

It creates a topology map of the entire network.

It allows systems to learn about each other even if different network layer protocols are configured.

It forwards advertisements about routes for faster convergence.

Which piece of information is available from examining the output of the command show ip interface brief?

Interface speed and duplex

Interface MTU

Errors

Interface MAC address

Interface IP address

Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.)

Administrative distance refers to the trustworthiness of a particular route.

A router first installs routes with higher administrative distances.

The value of the administrative distance can not be altered by the network administrator.

Routes with the smallest metric to a destination indicate the best path.

The metric is always determined based on hop count.

Refer to the exhibit. Which statement correctly describes how R1 will determine the best path to R2?
R1 will install a RIP route using network A in its routing table because the administrative distance of RIP is higher than EIGRP.

R1 will install a RIP route using network A in its routing table because the path cost from RIP is lower than EIGRP.

R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP.

R1 will install an EIGRP route using network B in its routing table because the path cost from EIGRP is lower than RIP.

R1 will install an EIGRP route and a RIP route in its routing table and load balance between them.

Which two statements are true regarding classless routing protocols? (Choose two.)

sends subnet mask information in routing updates

sends complete routing table update to all neighbors

is supported by RIP version 1

allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology

reduces the amount of address space available in an organization

Which command would the network administrator issue to determine ifload balancing is in effect on a router?

show ip protocols

show ip route

show ip interface brief

show ip interface

Which statement is true regarding routing protocols?

RIP uses hop count and bandwidth as the metric for path selection and sendsupdates periodically.

OSPF is a Cisco proprietary protocol that sends updates triggered by topology changes.

EIGRP uses DUAL to calculate the shortest path and can be configured to do unequal cost load balancing.

BGP is a path vector interior routing protocol.

Which two conditions would create a setting where the use of a distance-vector routing protocol would be efficient? (Choose two.)

the network requires a special hierarchical design

fast convergence of the network is crucial

the network is using a hub and spoke topology

the network is using a flat design

there are more than 15 hops between the most distant routers

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.

Which of the following best describes the operation of distance vectorrouting protocols?

They use hop count as their only metric.

They only send out updates when a new network is added.

They send their routing tables to directly connected neighbors.

They flood the entire network with routing updates.

Which of the following is associated with link-state routing protocols?

low processor overhead

poison reverse

routing loops

split horizon

shortest-path first calculations

Why is fast convergence desirable in networks that use dynamicrouting 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.

Which of the following conditions must be met in order for a network to have converged?

The routers in the network are operating with dynamic routing protocols.

The routers in the network are operating with compatible versions of IOS.

The routers in the network are operating with the same routing tables.

The routers in the network are operating with consistent routing knowledge.

Which two statements are true regarding metrics? (Choose two.)

RIP uses bandwidth as a metric.

OSPF uses delay as a metric.

EIGRP uses bandwidth as a metric.

OSPF uses cost based on bandwidth as a metric.

RIP uses delay as a metric.

Which two statements are true regarding the advantages of the use of static routes? (Choose two).

increased security

reduced effort in configuring routes

the administrator maintains control over routing

easier to implement in a growing network

reduces the chance of routing errors

The following line of code is displayed in a routing table:
R 209.165.201.0/24 [120/2] via 192.168.252.2, 00:00:16, S0/0/0
What can be concluded from this output?

A packet destined for host 192.168.252.2 will be forwarded out the interface connected to network 209.165.201.0/24.

The value, 120, is used to determine the best path when a router has more than one routing protocol configured for the same destination network.

This route was manually configured using the ip route command.

192.168.252.2 is an interface on the router that produced this output.

What will be the result of the following commands?
ORL(config)# interface fastethernet 0/0 ORL(config-if)# ip address 172.16.3.1 255.255.255.0 ORL(config-if)# no shutdown

The 172.16.3.0 network will be routed by any dynamic routing protocol automatically.

A routing table entry is made to the 172.16.3.0 network with a code of “C”.

A static route is required to route traffic to the 172.16.3.0 network.

The commands will be saved to the startup-configuration.

An engineer creates a static route by entering the Router(config)# ip route 10.0.0.0 255.255.255.0 192.168.1.2 command. What can be concluded about this route?

The administrative distance of this route is 1.

192.168.1.2 is the address of an interface on this router.

This route will display as a directly connected network in the routing table.

Packets with a destination IP address of 192.168.1.2 will be forwarded to the 10.0.0.0/24 network first.

Refer to the exhibit. Router1 and Router2 are running EIGRP. All interfaces are operational and packets can be forwarded between all networks. What information will be found in the routing table for Router1?

Router1 will have 6 directly connected networks.

The administrative distance of the route to network 172.16.0.0 will be 90.

The metric for routes to 172.16.0.0 will be 1.

The interface that is used to forward packets to 172.16.0.0 will always be the S0/1 interface.

The following line of code is present in the routing table:
O 10.16.1.0/27 [110/129] via 192.168.1.5, 00:00:05, Serial0/0/1
What does the number 129 indicate in this output?

The cost for this link has a value of 129.

The clock rate on this serial interface is set to 129,000.

The next-hop router is 129 hops away from this router.

This route has been updated 129 times in this routing table.

A growing medium-sized manufacturing company recently began to have routing instability issues. The company uses static routes and has a mixture of over 30 Cisco and non-Cisco routers. The network administrator has decided to convert the network to dynamic routing. What characteristics of protocols should be considered in this selection process?

Distance vector routing protocols, such as RIP, converge more quickly than do link-state routing protocols.

EIGRP can be used on all of the routers in the company.

OSPF can be used between the routers.

An exterior routing protocol, such as BGP, is recommended for growing companies.

Refer to the exhibit. If RIP is the routing protocol, what is the value of themetric from router A to network 192.168.5.0/24?

3

4

56

624

724

A router learns two paths with equal metrics to a destination network via the RIP routing protocol. How will the router handle packets to the destination network?

The router will install the first route it learned into the routing table.

The router will install both routes in the routing table and load balance between the two.

The router will put the first route in the routing table, and denote the second route as a backup route.

The router will pick the path with the higher bandwidth and will place it in the routing table.

A router learns two paths with equal metrics to a destination network via the RIP routing protocol. How will the router handle packets to the destination network?

The router will install the first route it learned into the routing table.

The router will install both routes in the routing table and load balance between the two.

The router will put the first route in the routing table, and denote the second route as a backup route.

The router will pick the path with the higher bandwidth and will place it in the routing table.

When multiple routing protocols have a route to the same destination network, what determines which route is installed in the routing table?

best metric

lowest hop count

greatest available bandwidth

lowest administrative distance

lowest cost

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.

What does a router running RIP do first with a new route that is received from an advertisement?

places it immediately in the routing table

adjusts the metric for the new route to show the added distance for the route

advertises this route out all other interfaces except the one that it came in on sends a ping packet to verify that the path is a feasible route

Refer to the exhibit. If all routers are using RIP, how many rounds of updates will occur before all routers know all networks?

1

2

3

4

5

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.

Refer to the exhibit. The routers in this network are running RIP. Router A has not received an update from Router B in over three minutes. How will Router A respond?

The Holddown timer will wait to remove the route from the table for 60 seconds.

The Invalid timer will mark the route as unusable if an update has not been received in 180 seconds.

The Update timer will request an update for routes that were learned from Router B.

The Hello timer will expire after 10 seconds and the route will be flushed out of the routing table.

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

Which two statements describe EIGRP? (Choose two.)

EIGRP can be used with Cisco and non-Cisco routers.

EIGRP sends triggered updates whenever there is a change in topology that influences the routing information.

EIGRP has an infinite metric of 16.

EIGRP sends a partial routing table update, which includes just routes that have been changed.

EIGRP broadcasts its updates to all routers in the network.

Which event will cause a triggered update?

an update routing timer expires

a corrupt update message is received

a route is installed in the routing table

the network is converged

Which of the following statements are correct about RIP?

uses a broadcast to update all other routers in the network every 60 seconds

uses a multicast address to update other routers every 90 seconds

will send out an update if there is a failure of a link

updates only contain information about routes that have changed since last update

Which two statements are true regarding the function of the RIPv1 routing updates? (Choose two).

updates are broadcast only when there are changes to the topology

updates are broadcast at regular intervals

broadcast are sent to 0.0.0.0

broadcasts are sent to 255.255.255.255

updates contain the entire network topology

A network administrator is evaluating RIP versus EIGRP for a new network. The network will be sensitive to congestion and must respondquickly to topology changes. What are two good reasons to choose EIGRP instead of RIP in this case? (Choose two.)

EIGRP uses periodic updates.

EIGRP only updates affected neighbors.

EIGRP uses broadcast updates.

EIGRP updates are partial.

EIGRP uses the efficient Bellman-Ford algorithm.

Which two conditions are most likely to cause a routing loop? (Choose two.)

random jitter

implementation of classful addressing

inconsistent routing tables

incorrectly configured static routes

a network converging too quickly

CCNA2 Chapters 1-11

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