CCNP Service Provider BGP Quiz

1. The BGP NEXT_HOP attribute is typically modified by which type of router?

Route reflectors

Confederation border routers

EBGP neighbors

RR clients

2. BGP graceful restart allows routers to preserve forwarding state during a control plane restart.

True

False

3. The BGP keepalive timer is typically set to one-third of the hold time.

True

False

4. A router can establish eBGP sessions with multiple neighbors in the same AS number.

True

False

5. BGP communities are mandatory for all route advertisements in a service provider network.

True

False

6. Route reflectors must reflect all received routes to all clients without modification.

True

False

7. The BGP decision process evaluates LOCAL_PREFERENCE before AS_PATH length.

True

False

8. In BGP, what triggers a route to enter the Withdrawn state?

Loss of the internal path

Neighbor becomes unreachable

Route becomes less preferred

All of the above

9. Which BGP policy tool allows you to match and modify routes based on regular expressions?

Access lists

Route maps

Prefix lists

AS path filters

10. What is the purpose of the CLUSTER_LIST attribute in BGP?

To identify route reflector clusters and prevent loops

To group routers into confederation subgroups

To prioritize traffic within a cluster

To authenticate routes between clusters

11. What is the default administrative distance for eBGP routes?

20

100

110

200

12. In BGP confederations, which AS number is used in eBGP advertisements?

The confederation identifier

The member AS number

The highest AS number in the confederation

A randomly generated AS number

13. What does the ORIGIN attribute indicate in a BGP route?

The originating AS number

The source of the route (IGP, EGP, or incomplete)

The IP address of the originating router

The timestamp when the route was created

14. Which BGP state occurs after the Open message is exchanged?

Established

OpenConfirm

OpenSent

Connected

15. In BGP, MULTI_EXIT_DISC is used to influence which decision point?

Route selection among multiple AS_PATH lengths

Tie-breaking among routes from the same AS

Preference for internal versus external routes

Neighbor relationship establishment

16. What is the default weight value assigned to routes received from a neighbor?

0

32768

100

65535

17. Which command enables BGP route dampening on a Cisco router?

Bgp dampening

Bgp route-dampening

Bgp dampening enable

Bgp suppress-unstable-routes

18. What is the primary function of a route reflector in BGP?

Filter invalid routes

Reflect routes from one iBGP client to others

Summarize route advertisements

Modify route metrics automatically

19. In BGP, what does the LOCAL_PREFERENCE attribute control?

Outbound traffic to neighbors

Inbound traffic from neighbors

Exit point selection for external routes

Neighbor relationship priority

20. Which BGP attribute is used to prevent routing loops in confederations?

AS_PATH

CONFEDERATE_AS_PATH

LOCAL_PREF

CLUSTER_LIST

CCNP Service Provider BGP for Service Providers Quiz

1. The BGP NEXT_HOP attribute is typically modified by which type of router?

2.

What first name or nickname would you like us to use?

2. BGP graceful restart allows routers to preserve forwarding state during a control plane restart.

3. The BGP keepalive timer is typically set to one-third of the hold time.

4. A router can establish eBGP sessions with multiple neighbors in the same AS number.

5. BGP communities are mandatory for all route advertisements in a service provider network.

6. Route reflectors must reflect all received routes to all clients without modification.

7. The BGP decision process evaluates LOCAL_PREFERENCE before AS_PATH length.

8. In BGP, what triggers a route to enter the Withdrawn state?

9. Which BGP policy tool allows you to match and modify routes based on regular expressions?

10. What is the purpose of the CLUSTER_LIST attribute in BGP?

11. What is the default administrative distance for eBGP routes?

12. In BGP confederations, which AS number is used in eBGP advertisements?

13. What does the ORIGIN attribute indicate in a BGP route?

14. Which BGP state occurs after the Open message is exchanged?

15. In BGP, MULTI_EXIT_DISC is used to influence which decision point?

16. What is the default weight value assigned to routes received from a neighbor?

17. Which command enables BGP route dampening on a Cisco router?

18. What is the primary function of a route reflector in BGP?

19. In BGP, what does the LOCAL_PREFERENCE attribute control?

20. Which BGP attribute is used to prevent routing loops in confederations?