Test your basic knowledge |

CCNP Route

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. If you do not use the router-id command - how is the router ID selected on an OSPF speaking router?
The highest IP address of an active interface is selected; any loopback interface overrides this behavior. Therefore - if you have loopback interfaces - the highest IP address on an active loopback interface is selected.
The default cost of the default route is 1.
Route dampening can make the network more stable. To enable route dampening - use the bgp dampening command.
This percentage can be changed on a per-interface basis by using the ip bandwidth-percent eigrp interface configuration command.

2. What are the three BGP route reception options?
You must manipulate the K values on all routers if you plan to manipulate them on one.
Default routes from each provider - default routes plus some more specific routes - and all routes from all providers. Either use static routes - or advertise the site routes to the ISP and receive a default route from the ISP.
These are Type-2 external routes. Again - they define networks outside of the autonomous system and are advertised by Type 5 LSAs. In this case cost is always the external cost only. This is the default OSPF external route type on Cisco routers.
The default origin code for BGP routes that you inject using redistribution is unknown.

3. For the Point-to-point Cisco mode of operation - fill in the following information: Dynamic or manual neighbor configuration? ________ DR/BDR election required?
The no-summary keyword needs to be used on the ABR only.
BGP's loop prevention mechanism is an autonomous system number. When an update about a network leaves an autonomous system - that autonomous system's number is prepended to the list of autonomous systems that have handled that update. When an autonom
The Cisco mode of Broadcast requires a full mesh topology.
For the Point-to-point Cisco mode of operation: Dynamic or manual neighbor configuration? Dynamic DR/BDR election required? Not required

4. You need to suppress the periodic Hellos so that an ISDN link is not constantly enabled in a dial-on-demand routing (DDR) environment. What feature of OSPF should you use?
On-demand circuit is an enhancement that allows efficient operations over dialup - ISDN - and other on-demand circuits.
The NSSA External (Type 7) LSA is almost identical to a Type 5 AS External LSA - yet it is used to create Not-So-Stubby Areas. An NSSA ASBR generates this LSA - and an NSSA ABR translates it into a Type 5 LSA - which gets propagated into the OSPF dom
You can use the show ip ospf command to verify the router ID of an OSPF-speaking router.
Changing the weight of a locally sourced route - Tagging source routes with BGP communities - Setting the local preference - Changing the value of the MED

5. You are considering the use of the weight attribute to influence route selection. Is a higher or lower weight preferred by Cisco routers?
The no-summary keyword needs to be used on the ABR only.
Cisco routers prefer a higher weight value.
You must manipulate the K values on all routers if you plan to manipulate them on one.
Place a static route pointing to NULL0 in the IP routing table.

6. What is the IP protocol number used by Enhanced Interior Gateway Routing Protocol (EIGRP)?
BGP is a path-vector protocol
Reduce the flooding of LSAs in stable topologies by setting LSAs to 'do not age' - Router(config-if)# ip ospf flood-reduction
IP network numbers and subnet masks (prefix-list or access-list) - Route originator - Next hop - Origin code - Tag value attached to an Interior Gateway Protocol (IGP) route - AS-path - Community - IGP route type
EIGRP uses IP protocol number 88.

7. Describe Internal BGP.
Aggregator - Community
IBGP is a BGP peering relationship between routers in the same autonomous system.
The default cost of the default route is 1.
The next hop router for a backup path is called the feasible successor.

8. You are considering the use of route maps in BGP for filtering purposes. Name at least five options for match clause criteria.
BGP peer groups would be ideal for this situation.
IP network numbers and subnet masks (prefix-list or access-list) - Route originator - Next hop - Origin code - Tag value attached to an Interior Gateway Protocol (IGP) route - AS-path - Community - IGP route type
Border Gateway Protocol
An ABR might not advertise a summary route for the following reasons:

9. What does a Type 1 LSA describe and Where is this LSA flooded?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

10. What is the default origin code for BGP routes that you inject using redistribution?
The default origin code for BGP routes that you inject using redistribution is unknown.
The minimum metric of the specific routes is used as the metric of the summary route.
The BGP process injects local routes in two different ways[md]1) using the network configuration commands and 2) using redistribution by another routing protocol.
You can configure manual manipulation of the AS-path attribute with the set as-path prepend command.

11. You are examining the results of the show ip route command - and you notice several OSPF routes bear an O E2 route designator. What does this signify?
These are Type-2 external routes. Again - they define networks outside of the autonomous system and are advertised by Type 5 LSAs. In this case cost is always the external cost only. This is the default OSPF external route type on Cisco routers.
You must manipulate the K values on all routers if you plan to manipulate them on one.
The default LSA aging timer is 30 minutes.
The ASBR Summary (Type 4) LSA advertises an Autonomous System Boundary Router (ASBR) destination. This LSA is originated at an ABR. This LSA type is flooded throughout an autonomous system.

12. What is the correct command to configure community propagation to BGP neighbors?
An autonomous system is a group of networks under a common administration. The Internet Assigned Numbers Authority(IANA) assigns AS numbers: 1 to 64511 are public AS numbers and 64512 to 65535 are private AS numbers.
Use the following command to configure route summarization on an ASBR to summarize external routes: Router(config-router)# summary-address address mask [not-advertise] [tag tag]
Router(config-router)# neighbor ip-address send-community
In EIGRP - a reliability of value 1 indicates a completely unreliable link.

13. Which of the Cisco OSPF nonbroadcast multiaccess (NBMA) modes of operation requires a full mesh topology?
[AS-number]:[low-order-16-bits]
The default value of the MED attribute is 0.
The Cisco mode of Broadcast requires a full mesh topology.
Origin - Next-hop - Weight - Community - Local preference - Multi Exit Discriminator (MED)

14. When configuring a Not-So-Stubby Area - Where is the appropriate configuration command applied?
Packets that require acknowledgement are as follows: Update - Query - Reply
An ABR might not advertise a summary route for the following reasons:
The command is applied on all routers in the area.
Router(config-router)# neighbor {ip-address | peer-group-name} prefix-list prefix-listname {in | out}

15. Why might an OSPF neighbor be stuck in the 2-WAY state?
A Priority value of 0 is configured on all routers.
For an OSPF router to advertise a default route into an area - the command default-information originate must be used. If the advertising router does not possess a default route in its routing table - you can use the always keyword to still generate
Using the default-network command - you can configure a default route for the EIGRP process so that it propagates to other EIGRP routers within the same autonomous system.
Hellos are sent every 5 seconds on broadcast links - as well as p2p serial - p2p subinterface - and multipoint circuits greater than T1.

16. What kind of routing protocol is run between Autonomous Systems?
Lowest cost route calculated by adding the cost between the next hop router and the destination (AD) and the cost between the local router and the next hop. This sum is referred to as the FD.
Mismatched interface MTU - Duplicate router IDs on routers - Broken unicast connectivity - Network type of point-to-point between PRI and BRI/dialer
Exterior Gateway Protocol(EGP). BGP v4 is the only EGP currently in use.
The Type 7 LSA is translated into a Type 5 LSA by the ABR.

17. What are the two methods by which BGP injects local routes into the BGP table?
Misconfigured neighbor statement - Unicast non-functional in NBMA environment
Open - Update - Keepalive - Notification
The highest IP address of an active interface is selected; any loopback interface overrides this behavior. Therefore - if you have loopback interfaces - the highest IP address on an active loopback interface is selected.
The BGP process injects local routes in two different ways[md]1) using the network configuration commands and 2) using redistribution by another routing protocol.

18. What is the default value of the MED attribute?
The next hop router for a backup path is called the feasible successor.
The default value of the MED attribute is 0.
Route dampening can make the network more stable. To enable route dampening - use the bgp dampening command.
Multiply the IGRP metric by 256.

19. What is the term for routers running BGP?
BGP speakers
To reset the value - use the following command on each router: Router(config-router)# auto-cost reference-bandwidth refbw
Open - Update - Keepalive - Notification
BGP's loop prevention mechanism is an autonomous system number. When an update about a network leaves an autonomous system - that autonomous system's number is prepended to the list of autonomous systems that have handled that update. When an autonom

20. What OSPF-related command allows you to reset the refbw value used in the formula for OSPF cost calculation?
Using the default-metric command in BGP configuration mode causes all redistributed networks to have the specified MED value.
To reset the value - use the following command on each router: Router(config-router)# auto-cost reference-bandwidth refbw
Multiply the IGRP metric by 256.
IBGP is a BGP peering relationship between routers in the same autonomous system.

21. For the Point-to-multipoint nonbroadcast Cisco mode of operation - fill in the following information: Dynamic or manual neighbor configuration? ________ DR/BDR election required? ________
OSPF addresses packets to multicast address 224.0.0.5.
For the Point-to-multipoint nonbroadcast Cisco mode of operation: Dynamic or manual neighbor configuration? Manual - DR/BDR election required? Not required
An OSPF stub area is an area into which External LSAs are not flooded (Type 4 and 5 LSAs are blocked.) Type 1 - 2 - and 3 LSAs are still used in a stub area.
The only LSA flooded into the area is a single Type 3 default LSA.

22. What command should you use to verify the router ID of an OSPF-speaking router?
You can use the show ip ospf command to verify the router ID of an OSPF-speaking router.
The Database Description (DBD) packet type checks for database synchronization between routers.
Multiply the IGRP metric by 256.
The Network Summary (Type 3) LSA is sent into an area to advertise destinations outside the area. These LSAs are originated by Area Border Routers (ABRs). They flood throughout the autonomous system.

23. Regarding the establishment of OSPF adjacencies - which state follows the Exstart State?
The minimum metric of the specific routes is used as the metric of the summary route.
The ASBR Summary (Type 4) LSA advertises an Autonomous System Boundary Router (ASBR) destination. This LSA is originated at an ABR. This LSA type is flooded throughout an autonomous system.
During the OSPF adjacency process - the Exchange State follows the Exstart State.
Only one instance of BGP can be run on a single router

24. You have a hub and spoke topology - and you are using EIGRP as your IGP. You want only routes that you specify propagated from the spoke of your topology. What EIGRP feature allows you to configure this?
In EIGRP - a reliability of value 1 indicates a completely unreliable link.
Route tagging with communities is always done with a route map. You can specify any number of communities. Communities specified in the set keyword overwrite existing communities unless you specify the additive option.
EIGRP stub routing is a feature that allows you to specify the routes that are propagated from the spoke.
A site connected to more than one ISP at the same time. It is done for redundancy and backup if one ISP fails - and for better performance if one ISP provides a better path to frequently used networks. This also gives you an ISP-independent solution.

25. Describe an autonomous system(AS).
An autonomous system is a group of networks under a common administration. The Internet Assigned Numbers Authority(IANA) assigns AS numbers: 1 to 64511 are public AS numbers and 64512 to 65535 are private AS numbers.
The BGP standards define several filtering-oriented communities for your use: no-export - Do not advertise routes to real External BGP (EBGP) peers - no-advertise - Do not advertise routes to any peer - local-as - Do not advertise routes to any EBGP
The correct command to configure a Not-So-Stubby Area in OSPF is as follows: Router(config-router)# area area-id nssa [no-redistribution] [default-information-originate]
Route tagging with communities is always done with a route map. You can specify any number of communities. Communities specified in the set keyword overwrite existing communities unless you specify the additive option.

26. You can manipulate the administrative distance of three different types of OSPF routes. What are the three types?
The minimum metric of the specific routes is used as the metric of the summary route.
Only one instance of BGP can be run on a single router
Slow neighbors are sent unicast packets in an attempt to resolve issues with slow neighbors.
Three different administrative distance values are possible for OSPF[md]intra-area routes - inter-area routes - and external routes. By default all are set to 110.

27. What does BGP stand for?
For an OSPF router to advertise a default route into an area - the command default-information originate must be used. If the advertising router does not possess a default route in its routing table - you can use the always keyword to still generate
After a neighbor is configured - BGP sends an open message to try to establish peering with that neighbor. Includes information such as autonomous system number - router ID - and hold time.
The only LSA flooded into the area is a single Type 3 default LSA.
Border Gateway Protocol

28. What is the type number of the external routes permitted in a Not-So-Stubby OSPF area?
A list of all configured BGP neighbors. To view it - use the show ip bgp summary command.
A list of networks known by BGP - along with their paths and attributes. To view it - use the show ip bgp command.
Type 7 LSAs are special external routes that you permit in a Not-So-Stubby area.
The next step in the update process features the DR acknowledging the LSU and flooding it to all OSPF speakers using multicast 224.0.0.5.

29. What does a Type 2 LSA describe - what router produces it - and Where is it flooded?
BGP is a path-vector protocol
The Network LSA (Type 2) lists all attached routers. These LSAs are produced by the DR on every multi-access network. They are flooded within the originating area.
Multi Exit Discriminator.
The AD is the cost between that next hop router and the destination.

30. What is the correct command to view the BGP table on the local router?
The correct command is show ip bgp.
Use the following command to configure inter-area route summarization on the ABR: Router(config-router)# area area-id range address mask
The next hop router for a backup path is called the feasible successor.
The Network LSA (Type 2) lists all attached routers. These LSAs are produced by the DR on every multi-access network. They are flooded within the originating area.

31. Routing table
[AS-number]:[low-order-16-bits]
IP network numbers and subnet masks (prefix-list or access-list) - Route originator - Next hop - Origin code - Tag value attached to an Interior Gateway Protocol (IGP) route - AS-path - Community - IGP route type
No DR/BDR election exists in a point-to-point environment by default.
A list of paths to each network used by the router - and the next hop for each network. To view it - use the show ip route command.

32. You have configured the demand-circuit configuration in your OSPF network - but the link keeps coming up because of OSPF. Name at least three possible reasons for this.
String matching ranges and wildcards - brackets '[]' can be used for ranges - and the '.' can match any single character.
Router# clear ip bgp ip-address soft out
The default LSA aging timer is 30 minutes.
Link flapping - Network type being broadcast - PPP host route being redistributed - One router being not demand-circuit capable

33. What command do you use to configure route summarization on an ASBR to summarize external routes?
Use the following command to configure route summarization on an ASBR to summarize external routes: Router(config-router)# summary-address address mask [not-advertise] [tag tag]
Multi Exit Discriminator.
The Network Summary (Type 3) LSA is sent into an area to advertise destinations outside the area. These LSAs are originated by Area Border Routers (ABRs). They flood throughout the autonomous system.
The Router LSA (Type 1) lists all of a router's links and their state. These LSAs are flooded within the area they originated.

34. Once adjacencies are established in the LAN and router information is being maintained - what step follows a router noticing a change and multicasting an LSU to 224.0.0.6?
Use the following command to configure inter-area route summarization on the ABR: Router(config-router)# area area-id range address mask
For the nonbroadcast (NBMA) RFC-compliant mode of operation: Dynamic or manual neighbor configuration? Manual - DR/BDR election required? DR/BDR election
External BGP is a BGP peering relationship between routers in different autonomous systems.
The next step in the update process features the DR acknowledging the LSU and flooding it to all OSPF speakers using multicast 224.0.0.5.

35. What is the administrative distance for IBGP?
Lowest cost route calculated by adding the cost between the next hop router and the destination (AD) and the cost between the local router and the next hop. This sum is referred to as the FD.
OSPF not enabled properly on appropriate interfaces - Layer 1 or 2 not functional - Passive interface configured - Access list(s) blocking Hello packets in multiple directions - Error in IP address or subnet mask configuration - Hello or Dead interva
OSPF uses IP protocol number 89.
200

36. BGP database - or Routing Information Base
Route tagging with communities is always done with a route map. You can specify any number of communities. Communities specified in the set keyword overwrite existing communities unless you specify the additive option.
Router(config-router)# neighbor ip-address route-reflector-client
A list of networks known by BGP - along with their paths and attributes. To view it - use the show ip bgp command.
To qualify as a feasible successor - a next hop router must have an AD less than the FD of the current successor route. More than one feasible successor can exist.

37. You want to propagate a default route to other EIGRP speakers in the autonomous system. What command do you used to accomplish this?
Using the default-network command - you can configure a default route for the EIGRP process so that it propagates to other EIGRP routers within the same autonomous system.
The Cisco mode of Broadcast requires a full mesh topology.
Mismatched MTU - Corrupted link-state request packet
Cisco routers prefer a higher weight value.

38. You are using the show ip eigrp topology command to troubleshoot your EIGRP network. You notice an entry is marked as Active. What does this indicate?
This network is currently unavailable and installation cannot occur in the routing table. The router is currently searching for a replacement route.
Router(config-router)# neighbor ip-address send-community
Use the following command to configure route summarization on an ASBR to summarize external routes: Router(config-router)# summary-address address mask [not-advertise] [tag tag]
Using the default-metric command in BGP configuration mode causes all redistributed networks to have the specified MED value.

39. The four types of BGP messages.
Open - Update - Keepalive - Notification
For the Point-to-point Cisco mode of operation: Dynamic or manual neighbor configuration? Dynamic DR/BDR election required? Not required
Router(config-router)# neighbor ip-address shutdown
Use the neighbor [ip address] next-hop-self command in BGP configuration mode.

40. What is the Feasible Distance (FD) value in EIGRP?
Packets that require acknowledgement are as follows: Update - Query - Reply
Lowest cost route calculated by adding the cost between the next hop router and the destination (AD) and the cost between the local router and the next hop. This sum is referred to as the FD.
IP network numbers and subnet masks (prefix-list or access-list) - Route originator - Next hop - Origin code - Tag value attached to an Interior Gateway Protocol (IGP) route - AS-path - Community - IGP route type
A list of all configured BGP neighbors. To view it - use the show ip bgp summary command.

41. To what IP address does OSPF send packets destined for the Designated Router (DR) and Backup Designated Router (BDR) in the LAN?
These routes are Type-1 external routes. They define networks outside of the autonomous system and are advertised by Type 5 LSAs. The cost is calculated by adding the external cost to the internal cost of each link that the packet crosses. The use of
OSPF addresses packets to multicast address 224.0.0.6.
Aggregator - Community
Interior Gateway Protocol(IGP)

42. What is the correct command to configure a Not-So-Stubby Area in OSPF?
The correct command to configure a Not-So-Stubby Area in OSPF is as follows: Router(config-router)# area area-id nssa [no-redistribution] [default-information-originate]
BGP's loop prevention mechanism is an autonomous system number. When an update about a network leaves an autonomous system - that autonomous system's number is prepended to the list of autonomous systems that have handled that update. When an autonom
For the Point-to-multipoint RFC-compliant mode of operation: Dynamic or manual neighbor configuration? Dynamic DR/BDR election required? Not required
Manually configured

43. If you want to modify parameters before inserting prefixes into the BGP table - you can use a route map. Name at least three reasons why this might be accomplished.
Changing the weight of a locally sourced route - Tagging source routes with BGP communities - Setting the local preference - Changing the value of the MED
Interdomain routing
The BGP standards define several filtering-oriented communities for your use: no-export - Do not advertise routes to real External BGP (EBGP) peers - no-advertise - Do not advertise routes to any peer - local-as - Do not advertise routes to any EBGP
This regular expression matches routes that originated in autonomous system 200.

44. The metric of EIGRP is compatible with the metric of the earlier Interior Gateway Routing Protocol (IGRP). How do you convert the IGRP metric to the form of EIGRP?
Router(config-router)# neighbor ip-address route-reflector-client
Multiply the IGRP metric by 256.
An ABR might not advertise a summary route for the following reasons:
Reduce the flooding of LSAs in stable topologies by setting LSAs to 'do not age' - Router(config-if)# ip ospf flood-reduction

45. What is the term for BGP neighbors?
Once using the command - you use the clear ip ospf process to reset the OSPF process and change the router ID.
BGP peers
An autonomous system is a group of networks under a common administration. The Internet Assigned Numbers Authority(IANA) assigns AS numbers: 1 to 64511 are public AS numbers and 64512 to 65535 are private AS numbers.
Slow neighbors are sent unicast packets in an attempt to resolve issues with slow neighbors.

46. You are engaged in route filtering using regular expressions. How can you match any single character?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

47. How can a router qualify as a feasible successor in EIGRP?
Exterior Gateway Protocol(EGP). BGP v4 is the only EGP currently in use.
To qualify as a feasible successor - a next hop router must have an AD less than the FD of the current successor route. More than one feasible successor can exist.
A site with two connections to multiple ISPs. This gives the most redundancy. BGP is used with the ISPs and can be used internally also.
The default LSA aging timer is 30 minutes.

48. What is the correct syntax to find community attributes in routing updates?
The network backdoor router configuration command causes the administrative distance assigned to the network to be forced to 200. The goal is to make Interior Gateway Protocol (IGP) learned routes preferred.
Router(config)# ip community-list 1-99 permit|deny value [ value ... ]
After a neighbor is configured - BGP sends an open message to try to establish peering with that neighbor. Includes information such as autonomous system number - router ID - and hold time.
Using the default-network command - you can configure a default route for the EIGRP process so that it propagates to other EIGRP routers within the same autonomous system.

49. What is the formula used by OSPF for the calculation of cost?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

50. What kind of routing protocol is run within an AS?
For the nonbroadcast (NBMA) RFC-compliant mode of operation: Dynamic or manual neighbor configuration? Manual - DR/BDR election required? DR/BDR election
The default cost of the default route is 1.
Packets that require acknowledgement are as follows: Update - Query - Reply
Interior Gateway Protocol(IGP)