Question 1
How is the aggregator attribute handled with 32-bit AS numbers?
Correct Answer:
B. With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.
Free Nokia Border Gateway Protocol 4A0-102 Exam Questions
Question 2
Which of the following is NOT a BGP message type?
Correct Answer:
B. OpenSent
Question 3
Which of the following regarding route reflectors is TRUE?
Correct Answer:
A. Only the route reflector is configured with a cluster id.
Question 4
Click the exhibit.
Assume all router-IDs are properly configured, and link-local IPv6 addresses are used to establish the eBGP sessions. Which of the following is the MINIMAL configuration required on router A so that router B can exchange traffic with router D?
Correct Answer:
C. Option C
Question 5
From what range are 16-bit private AS numbers selected?
Correct Answer:
C. 64512-65534
Question 6
Click the exhibit.
Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions. Which of the following configurations is required on router A so that router B can exchange traffic with router D?
Correct Answer:
A. Option A
Question 7
Click the exhibit.
Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6. Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes on router R1?
Correct Answer:
C. Option C
Question 8
What will happen if an update is received with an unrecognized optional non-transitive attribute?
Correct Answer:
C. The router will accept the update and ignore the attribute.
Question 9
Click the exhibit.
Router R2 is advertising prefix 192.168.1.0/27 with community "no-advertise" towards AS 65002. Which routers receive an update for that prefix?
Correct Answer:
A. Router R3 only.
Question 10
Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router R2 has system address 10.10.10.2. Which of the following configurations on router R2 can establish a BGP session with router R1?
Correct Answer:
B. Option B
Question 11
Click the exhibit.
AS 65550 owns the CIDR block 10.64.0.0/12. Router R4 advertises the aggregate 10.64.0.0/12 to AS65540. Which of the following is TRUE regarding the aggregate route advertisement?
Correct Answer:
C. The aggregator attribute will be present, and the atomic aggregate flag will not be set.
Question 12
Which of the following regarding "well-known discretionary'' BGP attributes is TRUE?
Correct Answer:
C. They must be recognized by all peers and optionally included in BGP updates.
Question 13
What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?
Correct Answer:
D. All BGP routes matching prefix list 'List-1' are rejected.
Question 14
A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100. Which route will appear in the RIB-out?
Correct Answer:
A. Only the first route will appear in the RIB-Out.
Question 15
Which of the following about a single-homed AS is FALSE?
Correct Answer:
D. A single-homed AS can be either transit or non-transit