Chapter 4 - CCNP ROUTE potx

RTA is not running any dynamic routing protocol and its preferred route to network 10.0.0.0/8 is via RTC.. Use OSPF as the routing protocol between the regional routers.. The redistribut

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1

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 debug ip ospf database 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

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

3 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

4 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

5 Which method of redistribution is least likely to introduce a routing loop into a network?

one-way

two-way

one-point

multipoint

6

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

7

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

8Which 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

9

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

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

infinity

1

20

90

110

170

11 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]

12

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

13 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

14 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

15

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

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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

17 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

18

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

19

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 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

20

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

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