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2021 Nov 4A0-102 exam answers

Q31. BGP is configured on two peers, routers A and B. Router A is configured with a Hold Time timer of60 seconds and a Keepalive timer of 25 seconds. Router B is configured with a Hold Time timer of90 seconds and a Keepalive timer of 70 seconds. What will the active Keepalive timerbe on routerB? 

A. 70 seconds 

B. 25 seconds 

C. 20 seconds 

D. 30 seconds 

Answer: C 


Q32. Which of the following is TRUE? 

A. There can only be one community associated with a route. 

B. Community is an optional non-transitive attribute. 

C. Community is an optional transitive attribute. 

D. Community is a well-known discretionary attribute. 

Answer: C 


Q33. Which of the following statements regarding BGP Add-Paths is FALSE? 

A. Add-Paths allows non-best paths to be advertised to a peer. 

B. Add-Paths capabilities are exchanged between peers after the BGP session is established. 

C. A BGP speaker must advertise the capability to receive multiple paths from its peer. 

D. A BGP speaker must advertise the capability to send multiple paths to its peer. 

Answer: B 


Q34. Which of the following statements regarding BGP control plane convergence is FALSE? 

A. Core and edge node failure recovery depends on IGP convergence. 

B. Edge neighbor failure is detected by the eBGP session timeout. 

C. BGP control plane convergence is independent of number of affected prefixes. 

D. Upon BGP control plane convergence, an optimal path is installed in the FIB. 

Answer: C 


Q35. Which of the following statements about the BGP Advertise External feature is FALSE? 

A. It modifies the BGP advertisement logic. 

B. It improves convergence times and allows for better load sharing. 

C. It allows a router to advertise multiple external paths for a single prefix. 

D. It supports both IPv4 and IPv6. 

Answer: C 


Renew 4A0-102 free practice test:

Q36. Click the exhibit. 

Router R6 is a route reflector with clients R1, R2, R4 and R5. R4 receives three routes from routerR6 and is configured with ECMP 3. Given the following BGP configuration on router R4, how manyprimary and backup paths will be present in router R4's BGP routing table? 

A. Two primary paths and one backup path. 

B. One primary path and two backup paths. 

C. Three primary path and one backup path, 

D. Three primary paths. 

Answer: D 


Q37. Which of the following best describes the relationship between locally configured policies and thedirection of traffic? 

A. Import policies affect the way the local AS receives traffic, while export policies affect the way itsends traffic. 

B. Import policies affect the way the local AS sends traffic, while export policies affect the way itreceives traffic. 

C. Both import and export policies affect the way the local AS receives traffic, but not the way itsends traffic. 

D. Both import and export policies affect the way the local AS sends traffic, but not the way itreceives traffic. 

Answer: B 


Q38. A router in AS 65100 receives two BGP routes. The first route is for 138.1.1.0/24 with an AS Pathof 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The secondroute is for 138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100,and router ID 10.1.1.1. Assuming all other attributes are equal, which route would be used toforward an IP packet with destination IP address 138.1.1.1? 

A. The first BGP route. 

B. The second BGP route. 

C. Both routes are used. 

D. It is impossible to determine without the value of the origin code for both routes. 

Answer: A 


Q39. Click the exhibit. 

Routers C and E are route reflectors. When the update for prefix 192.168.2.0/24 is received atrouter F, what will be the Originator_ID attribute? 

A. The router ID of router A. 

B. The router ID of router B. 

C. The router ID of router C. 

D. It will not be set. 

Answer: B 


Q40. Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made andcommitted, what action is required by the user for the change to take effect? 

A. Execute a command to re-evaluate all routes in the Local-RIB against the configured exportpolicies. 

B. Execute a command to re-evaluate all routes in the RIB-In against the configured importpolicies. 

C. Execute a command to reset the BGP session with the affected peer or peers. 

D. No further action is required. 

Answer: D