capitulo4

Which is the default seed metric for an OSPF route that is redistributed into an EIGRP autonomous system? infinity

1

20

90

110

170

Observable Description Max Value

1 correctness of response 2 points for Option 1 0 points for any other option

2

Which criterion must be met before a route can be redistributed into another routing protocol? be directly connected

exist in the routing table

be learned through a dynamic routing protocol

be learned from a different routing protocol than the protocol into which it is redistributed have an administrative distance that is greater than that of the routing protocol into which it is being redistributed



2

Which method of redistribution is least likely to introduce a routing loop into a network? one-way

two-way

one-point

multipoint



2

Refer to the exhibit. After configuring two-way redistribution, an administrator notices that none of the EIGRP routes are being advertised in the OSPF network. What is a possible reason that the routes are not being advertised?

The wrong EIGRP AS is being redistributed.

The metric value is wrong for the redistribute command under EIGRP.

The metric value is wrong for the redistribute command under OSPF.

The subnets keyword is missing on the redistribute command under OSPF.



2

Refer to the exhibit. How will router RTA redistribute routes between the two autonomous systems? Route redistribution will not be successful in either direction.

One-way redistribution will occur with EIGRP routes being redistributed into RIP.

One-way redistribution will occur with RIP routes being redistributed into EIGRP.

Two-way redistribution will occur with RIP routes being redistributed into EIGRP and then back into RIP.



2

Refer to the exhibit. Two-way redistribution was configured between OSPF and RIP on R2. After the redistribution, R3 does not see any external routes coming from the RIP domain. The external output reveals that no external LSAs are generated for the routes. What could the problem be?

A subnets keyword is missing from the R2 configuration.

An area 0 stub command is missing from the R2 configuration.

A default-metric command is missing from the R2 configuration.

A distribute-list in Serial0/1 command on R3 is blocking all of the updates coming from R2.

Refer to the exhibit. The EIGRP subnets such as 10.10.0.0/16 and 10.20.0.0/16 are not being seen inside the OSPF domain. What is a possible reason for this?

The redistribute command is missing the subnets keyword in the OSPF configuration. The network statement for EIGRP is missing the network mask configuration.

The metric configuration for OSPF is set too high.

A seed metric for EIGRP has not been set.

Refer to the exhibit. A network engineer was called to investigate some intermittent delay and jitter issues with the corporate network that is exhibited. The engineer determined that the root cause of the issue is excesrouting updates. What solution would mitigate this problem?

Enable OSPF autosummarization on all the routers.

Implement RIPv1 classful route summarization.

Create an OSPF area from each interface on the regional routers to summarize advertisements.

Configure the WAN interfaces of the district routers to summarize the routes into the regional routers.



2

Refer to the exhibit. A network engineer was called to investigate some intermittent delay and

jitter issues with the corporate network that is shown. The engineer determined that the root

cause is that the routing tables in the district routers are so large that the routers cannot

maintain the tables efficiently. What can be done to mitigate this issue?

Implement a classful routing protocol.

Use OSPF as the routing protocol between the regional routers.

Enable autosummarization on the WAN links from the regional routers to the district

routers.

From the regional routers, advertise only default routes to district routers and filter out

all remaining networks.

Refer to the exhibit. You have been asked to investigate why users in the District 2 offices are

experiencing long delays when accessing their e-mail. After a preliminary investigation, you

determine that the route to the District 1 server farm in the District 2 router is through the

regional office switch. What can be done to resolve this fault?

Make the WAN interfaces on the district routers passive EIGRP interfaces.

On the district routers, lower the OSPF cost to 1 on the interfaces between the routers.

On the district routers, change the default metric of the EIGRP routes that are being

injected to 10000.

Modify the administrative distance of OSPF to 80 on the district routers for the routes

that are included in 10.0.0.0 /8.

Which statement best describes the route tag in a RIPv2 packet? The route tag contains a 32-bit mask that identifies the network and subnet portion of the IP address.

It contains the IP address of the next hop that is listed in the IP Address field.

It indicates how many internetwork hops or routers have been traversed in the trip to the destination. It differentiates between a request for a full routing table or a partial routing update due to a topology change. It differentiates between routes that are learned within the autonomous system and those that were redistributed into the routing process.



2

Refer to the exhibit. The network that is shown is operating normally with the routing protocols configured with the default settings. What path will packets from PC1 take to the file server?

AR2-DR1

AR3-DR1

AR2-AR3-DR1

AR3-AR2-DR1



2

A router has learned the route 192.168.254.0 /24 from multiple sources. These sources are as follows: - RIPv1 route with a metric of 12 - EIGRP with a metric of 125689 - OSPF E2 route with a metric of 125 - EIGRP external route with a metric of 3489 - OSPF type 1 route with a metric of 632 - OSPF route with a metric of 4 What route will be injected into the routing table?

D with metric of 125689

E1 with a metric of 632

E2 with a metric of 125

EX with a metric of 3489

O with a metric of 4

R with metric of 12



2

Which command would allow advertising only an aggregate address of 192.168.0.0/16 when applied by using a

neighbor statement that contains prefix-list [prefix-list name] out? permit 192.168.0.0/0 le 16

permit 192.168.0.0/16

permit 192.168.0.0/16 ge 16

permit 192.168.0.0/16 eq 16



2

Refer to the exhibit. RTA has two paths to network 10.0.0.0/8 via two serial links, Serial 0/0/0 to RTB and Serial 0/0/1 to RTC. RTA is not running any dynamic routing protocol and its preferred route to network 10.0.0.0/8 is via RTC. Which commands on RTA would configure it to use RTB to reach network 10.0.0.0/8 only if the serial link to RTC fails?

ip route 10.0.0.0 255.0.0.0 Serial 0/0/0 ip route 10.0.0.0 255.0.0.0 Serial 0/0/1 130 ip route 10.0.0.0 255.0.0.0 Serial 0/0/1 ip route 10.0.0.0 255.0.0.0 Serial 0/0/0 130 ip routing ip default-network 10.0.0.0 ip route 10.0.0.0 255.0.0.0 Serial 0/0/0 no ip routing ip default-gateway 10.0.0.0 ip route 0.0.0.0 0.0.0.0 Serial 0/0/1



2

Refer to the exhibit. Which command was issued to display the route metric and minimum MTU information that is shown?

show ip route metrics

show ip route 131.119.0.0

show ip route metric 131.119.0.0

show ip route metric-mtu



2

What is the final step when configuring policy-based routing? Define access lists.

Configure policy with the use of the route-map command.

Apply policy to an interface using ip policy route-map command.

Apply match commands.



2

Which command would deploy a prefix list in a BGP environment?

ip prefix-list distribute

ip bgp prefix-list distribute

neighbor [ip address] prefix-list prefix-list-name [in/out]

neighbor [ip address] prefix-list-name [in/out]



2

Which prefix-list entry will be used when multiple entries in a prefix list match a given prefix?

all matching entries

entry with the lowest sequence number

entry with the largest sequence number

entry with the longest prefix mask length



2

Refer to the exhibit. A network engineer was called to investigate some intermittent delay and jitter issues with the corporate network that is exhibited. The engineer determined that the root cause of the issue is excessive routing updates. What solution would mitigate this issue?

Re-address the corporate network to allow summarization.

Implement RIPv1 classful route summarization.

Use OSPF as the routing protocol between the regional routers.

Migrate the routing protocol to multiarea OSPF to summarize networks .



2

capitulo4

Documents

dynamic routing

routing table

routing protocol

ip address

r2 configuration

engineer determined

subnets keyword

intermittent