4A0-102 Practice Exam Questions with Answers NokiaBorder Gateway Protocol Certification

AnNokia7750 SR has the BGP configuration shown below. Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?

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Which of the following is a valid BGP configuration for router R2?

A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each. Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?

What are the well-known mandatory BGP attributes?

The configuration of anNokia7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?

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An update travels from AS 135000 to AS 137000, traversing both 32-bit and 16-bit AS paths.

What will the AS Path be when the update reaches AS 137000?

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Assuming a fulliBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?

What isthe result of configuring the following policy statement as a BGP import policy on theNokia7750 SR?

Based on the default settings for theNokia7750 SR, when a policy change is made and committed, what action is required by the user for the change to takeeffect?

A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of65200 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 200. Which route will appear in the RIB-In?

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An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths.

What AS Path is seen by AS 200?

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Router R1 is a route reflector withclients 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 router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R1?

Which of thefollowing is NOT a BGP message type?

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AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with"summary-only" enabled. Which of the following routes are received by router R7?

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AS 65100 isadvertising 192.168.1.0/27 into BGP. Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

The user of anNokia7750 SR wantsto see the effect of changing an import policy immediately. What is the best command to force re-evaluation of the import policy with minimal impact?

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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?

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Which of the following statements best describes the BGP sessions within the given network?

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Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh. What path does traffic destined to 192.168.1.0/27 take from router R1?

Which of thefollowing statements regarding route reflectors is TRUE?

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Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on router R2?

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AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?

Which of the following statements regarding BGP Fast Reroute is FALSE?

Which of the following is TRUE?

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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?

Which of the following regarding "well-known discretionary'' BGP attributes is TRUE?

A router in AS 65100 receives two BGP routes. The first route is for138.1.1.0/24 with an AS Path of 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route 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 to forward an IP packet with destination IP address 138.1.1.1?

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Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions. Given the following iBGP configuration on router A, what is the Next Hop forprefix 2001:DB8:A:401::1/128 on router B?

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Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5have 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?

What kind of attribute is the aggregator?

Which of the following behaviors regarding the modification of BGP attributes within a confederation is TRUE?

Which of the following is FALSE regarding the 16-bit public autonomous system numbers?

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Routers RR1 and RR2 are route reflectors with the same Cluster-ID. When the update for prefix

192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?

What will happen if an update is received with an unrecognized optional non-transitive attribute?

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Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

Which of the following best describes the relationship between locally configured policies and the direction of traffic?

Assuming that "client1" and "client2" are directly-connected networks, what is the result ofexecuting the following BGP export policy?

BGP is configured on two peers, routers A and B. Router A is configured with a Hold Time timer of 60 seconds and a Keepalive timer of 25 seconds. Router B is configured with a Hold Time timer of 90 seconds and a Keepalive timer of 70 seconds. What will the active Keepalive timer be on router B?

AnNokia7750 SR is configured with a local preference of 250. If it receives a BGP update with a local preference of 500, what local preference is sent to its eBGP peers?