ROUTE Chapter 4 CCNP 6.0 2012 100% Take Assessment – ROUTE Chapter 4 – CCNP ROUTE: Implementing Cisco IP Routing (Version 6.0) – Answers – 2011 – 2012

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

8. 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

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.

16.
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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ROUTE Chapter 3 CCNP 6.0 2012 100% Take Assessment – ROUTE Chapter 3 – CCNP ROUTE: Implementing IP Cisco Routing (Version 6.0) – Answers – 2011 – 2012

1. Which OSPF network type requires the election of a DR/BDR?

broadcast
point-to-point
point-to-multipoint
point-to-multipoint nonbroadcast

2. In an OSPF hub-and-spoke topology, what needs to be done to ensure that the spoke routers would never be selected as DR and BDR?
Because nonbroadcast networks do not elect a DR/BDR, nothing needs to be done.
All routers must be configured with an OSPF interface priority of 0 (ip ospf priority) to disable the DR/BDR election process.
All spoke routers need to be configured with an OSPF interface priority of 0 (ip ospf priority) so that they will not become the DR/BDR.
One of the spoke routers will need to be configured as the DR by setting the OSPF interface priority higher than 1 (ip ospf priority).

3. A network administrator is implementing OSPF in a portion of the network and must ensure that only specific routes are advertised via OSPF. Which network statement would configure the OSPF process for networks 192.168.4.0, 192.168.5.0, 192.168.6.0, and 192.168.7.0, now located in the backbone area, and inject them into the OSPF domain?
r1(config-router)# network 192.168.0.0 0.0.0.255 area 1
r1(config-router)# network 192.168.4.0 0.0.3.255 area 1
r1(config-router)# network 192.168.4.0 0.0.15.255 area 1
r1(config-router)# network 192.168.0.0 0.0.3.255 area 0
r1(config-router)# network 192.168.4.0 0.0.3.255 area 0
r1(config-router)# network 192.168.4.0 0.0.255.255 area 0

4. What two advantages does authentication provide that should be considered when planning an OSPF implementation? (Choose two.)
It reduces OSPF information exchange overhead.
It encrypts routing tables to prevent unauthorized viewing.
It prevents routing information from being falsified in transit.
It ensures that routing information comes from a valid source router.
It ensures that OSPF routing information takes priority over RIP or EIGRP updates.

5. When will a router in an OSPF nonbackbone area receive a default route from the ABR or ASBR? (Choose three.)
when the area is a normal area
when the area is a NSSA stub area
when the area is a totally stubby area
when the area is a NSSA totally stubby area
when the area is connected to the backbone area using a virtual link
when the area is a normal area and the ASBR has been configured with the default-information originate always command

6. What are two reasons for creating an OSPF network with multiple areas? (Choose two.)
to protect against the fact that not all routers support the OSPF backbone area
to ensure that an area is used to connect the network to the Internet
to reduce SPF calculations
to reduce use of memory and processor resources
to simplify configuration

7. What does OSPF use to calculate the cost to a destination network?
bandwidth
bandwidth and hop count
bandwidth and reliability
bandwidth, load, and reliability

8. Which three items must match between OSPF neighbors in order to form an adjacency? (Choose three.)
hello/dead interval
area ID
priority ID
authentication type
adjacency type
router process ID

9. Refer to the exhibit. When OSPF is operational and converged, what neighbor relationship is developed between Router1 and Router2?
A FULL adjacency is formed.
A 2WAY adjacency is formed.
Router2 will become the DR and Router1 will become the BDR.
Both routers will become DROTHERS.

10. A fully converged five router OSPF network has been running successfully for several weeks. All configurations have been saved and no static routes are used. If one router loses power and reboots, what information will be in its routing table after the configuration file is loaded but before OSPF has converged?
All routes for the entire network will be present.
Directly connected networks that are operational will be in the routing table.
Because the SPF algorithm has not completed all calculations, no routes will be in the table.
A summary route for all previously learned routes will automatically appear in the routing table until all LSPs have been received by the router.

11. What are two effects of using multiple OSPF areas that reduce bandwidth and router overhead? (Choose two.)
prevention of a flood of queries
reduction in the size of the LSDB
reduction in the size of the neighbor table
limits on the propagation of type 1 and 2 LSAs
decrease in the number of DR and BDR elections

12. What is the function of the OSPF LSU packet?
to announce new OSPF information
to confirm receipt of certain types of OSPF packets
to request more information about any entry in the BDR
to establish and maintain adjacency with other OSPF routers

13. Refer to the exhibit. How does the router treat the authentication of OSPF packets that enter and leave FastEthernet interface 0/0?
OSPF packets are sent with authentication key 10 only.
OSPF packets are sent with authentication key 20 only.
Two copies of every OSPF packet are sent, one with key 10 and one with key 20.
Key 10 is used to authenticate incoming packets and key 20 is used to authenticate outgoing packets.

14. Refer to the exhibit. Which type of OSPF packets are represented by the debug command output?
link-state request packets sent with plain-text authentication
hello packets sent with a MD5 hashed authentication key id of 100
hello packets sent in simple authentication with a password of youngest
link-state update packets sent encrypted with a 100 bit authentication key

15. Refer to the exhibit. What destination address will RTB use to advertise LSAs?
224.0.0.5
224.0.0.6
10.1.7.17
172.16.1.1
172.16.2.1
255.255.255.255

16. Which two statements are correct about OSPF route summarization? (Choose two.)
Automatic OSPF route summarization is performed by the ABR.
The metric of the summary route is equal to the lowest cost network within the summary address range.
The area 51 range 172.0.0.0 255.0.0.0 command identifies area 51 as the area that contains the range of networks to be summarized.
OSPF can perform automatic summarization on major classful network boundaries even if no summarization commands are entered from the CLI.
Once OSPF route summarization is configured, the summary route will be advertised even if none of the networks in the address range are in the routing table.

17. Which two statements are correct about OSPF NSSA areas? (Choose two.)
The NSSA is a Cisco proprietary area type.
Type 7 LSAs are translated to type 5 LSAs by the ABR.
Type 7 LSAs are originated by the ASBR that is connected to the NSSA.
Type 7 LSAs are denoted in the routing table of an NSSA internal router as E1 or E2.
Both NSSA stub and totally stubby areas have a default route that is injected into the NSSA area by ABR.

18. How can correct OSPF topology change-behavior be verified as part of an implementation plan?
Debug the DUAL finite state machine.
Review the running configuration file.
Check the topology table for SIA routes.
Test link failure and router failure events.

19. What is the correct method to configure route summarization on an OSPF router?
Configure OSPF and instruct the ABR to summarize specific area routes.
Configure OSPF and instruct the ASBR to summarize internal area routes.
Configure the ABR and ASBR to summarize routes on an interface basis.
Do nothing because summarization is on by default.

20. Which command can be used to determine the stability of an OSPF area by examining the number of times SPF has been executed for that area? 
show ip ospf
show ip route
show ip protocols
show ip ospf database

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ROUTE Chapter 2 CCNP 6.0 2012 100% - Take Assessment – ROUTE Chapter 2 – CCNP ROUTE: Implementing Cisco IP Routing (Version 6.0) – Answers – 2011 – 2012

1.

Refer to the exhibit. A network administrator has configured R1 and R2 for EIGRP authentication with multiple keys and activation times. After functioning normally for a month, R1 and R2 are now no longer forming an EIGRP adjacency. Which configuration change to the key lifetimes will correct the EIGRP adjacency problem?
Change the key 1 accept life to an end time of Feb 1 on both routers.
Change key 2 send lifetime to a start time of Jan 1 on both routers.
Change the key 1 send lifetime to an end time of Feb 1 on both routers.
Change the key 2 accept lifetime to a start time of infinite on both routers.

2. Which event must take place to transition an EIGRP route that is in the active state back to the passive state?
expiration of the RTO timer
an update packet that is received from every EIGRP neighbor
an acknowledgment that is received from every EIGRP neighbor
a reply that is received from each neighbor for every generated query
a feasible successor route that is moved from the topology table to the routing table

3. Which EIGRP packet type can quickly propagate through a network and result in excessive DUAL computations and high CPU loads?
acknowledgment
hello
reply
update
query

4. When does an EIGRP router place a route in the active state?
when there is no successor route in the routing table
when the feasible distance is greater than the reported distance of the route
when an update packet containing information about the route is not acknowledged
when the current successor is no longer valid and there is no feasible successor in the topology table

5. Which two solutions are used in an EIGRP network to reduce DUAL computations? (Choose two.)
authentication
load balancing
partial updates
summarization
EIGRP stub routing

6. Which two statements are true of EIGRP topology depth? (Choose two.)
Topology depth should be limited to 15 routers.
Redundant links and alternative paths can be used to reduce topology depth.
Topology depth is the maximum hop count between any two EIGRP routers in the topology.
Route summarization can reduce the convergence time in networks with large depth.
Topology depth is the number of router hops necessary for traffic to reach from access layer to core layer.
Topology depth refers to the total number of hops that information must travel to reach all EIGRP routers in the network.

7. Which EIGRP algorithm tracks all the routes that are advertised by neighbors and uses the composite metric of each route to compare the routes?
STP
Dijkstra
DUAL
SPF

8. Which three technologies are used in EIGRP? (Choose three.)
Dijkstra algorithm
DUAL finite-state machine
reliable transport protocol
link-state advertisements
protocol-specific modules
Bellman-Ford algorithm

9.Refer to the exhibit. Based on the output of show ip eigrp neighbors, what are two possible problems with adjacencies between Router1 and Router2? (Choose two.)
The routers are configured with different EIGRP AS numbers.
Automatic summarization was disabled.
The hello timer for R1 was altered.
The serial interfaces for both routers are in different networks.
No feasible successors were found.

10.Refer to the exhibit. During a test of an EIGRP prototype network, a network administrator issues a show ip protocols command. What two facts can be determined from the output? (Choose two.)
The administrative distance is 100.
This router will not accept routes that are more than 100 hops away.
There are 10 Cisco devices in this prototype network.
The auto-summary command was applied on this router.
EIGRP is using two values for the calculation of the composite metric.
EIGRP on this router will display up to four unequal cost routes to the same destination.

11. A router in a fully converged EIGRP network detects that a remote route is unreachable. Which two events may occur next? (Choose two.)
EIGRP will look for a feasible successor in the routing table.
DUAL will calculate the highest cost routes to each network.
EIGRP will send a bounded update to alert neighbors about the failure.
The router will forward the complete routing table to the neighboring routers.
DUAL will look for a feasible successor route in the topology table and, if one is found, it will add this route to the routing table.
12.Refer to the exhibit. All three routers are exchanging EIGRP routes. What value represents the advertised distance of the feasible successor for the 10.1.2.0/24 network?
256
532
768
1280

13.Refer to the exhibit. Which statement is true of the EIGRP keys that are used by router R2?
R2 is encrypting EIGRP packets with only key 1.
R2 is encrypting EIGRP packets with both key 1 and key 2.
R2 is using only key 2 to authenticate received EIGRP packets.
R2 is authenticating received EIGRP packets with both key 1 and key 2.

14. Which action is effective in preventing EIGRP routes from becoming SIA?
Use multiple EIGRP autonomous systems to bound the query range.
Modify keepalive timers on point-to-point connections.
Maintain a hierarchical network design.
Keep K-values at default settings.

15. What are two advantages to deploying a hierarchical IP addressing scheme in an EIGRP network? (Choose two.)
greater redundancy
improved scalability
ability to use network route summarization
better route optimization creating shorter paths
fewer network addresses that need to be allocated for the network

16. Which statement is a requirement for the EIGRP AS number?
It is the EIGRP router ID and must be the same on each router in the EIGRP domain.
It is only locally significant, and as a result it can be different on each router in the EIGRP domain.
It is selected by the network administrator and must be the same on each router in the EIGRP domain.
It is assigned by IANA and must be the same on each router in the EIGRP domain.

17. What are two advantages of modifying the interface metrics when deploying EIGRP in a network? (Choose two.)
improved bandwidth utilization
less likely to have routing loops
faster convergence
better control over traffic patterns
more efficient troubleshooting

18. Which design plan or diagram would govern how well EIGRP will scale?
IP addressing plan
STP topology diagram
Layer 2 addressing plan
detailed cabling plan
EIGRP traffic engineering plan

19.

The network administrator wants RTA to send only the summarized route of 10.10.0.0/16 to RTB. Which configuration will accomplish this?
RTA(config)# interface s0/0
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0
RTA(config-if)# exit
RTA(config)# router eigrp 101
RTA(config-router)# no auto-summary

RTA(config)# interface s0/1
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0
RTA(config-if)# exit
RTA(config)# router eigrp 101
RTA(config-router)# no auto-summary

RTA(config)# interface s0/0
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0

RTA(config)# interface s0/1
RTA(config-if)# ip summary-address eigrp 101 10.10.0.0 255.255.0.0

20.

Refer to the exhibit. Which statement is true about the EIGRP hello packets that are received by router R2?
They are encrypted.
They are authenticated.
They are sent confidentially.
They must be acknowledged.

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