Nokia 4A0-C02 시험

Question No : 1

Click the exhibit.



Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4.
Which of the following is a valid configuration on router R3?

• A.Option A
• B.Option B
• C.Option C
• D.Option D

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Question No : 2

Which of the following regarding BGP Path Identifier is FALSE?

• A.Path-ID is a four-octet identifier pre-pended to the NLRI field of a BGP update.
• B.Path-ID is an optional transitive attribute used to advertise multiple paths.
• C.Path-ID uniquely identifies each path advertised to a neighbor.
• D.A BGP speaker that re-advertises a route must generate its own Path-I

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Question No : 3

Which of the following prefix-lists is the most specific match for prefixes 192.168.64.1/20 and 192.168.32.5/19?

• A.Prefix 192.168.0.0/17 longer.
• B.Prefix 192.168.0.0/19 longer.
• C.Prefix 192.168.96.0/19 longer.
• D.Prefix 192.168.0.0/18 longer.

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Question No : 4

Click the exhibit.



Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?

• A.ISP 1 has a peering relationship with ISP 2 and ISP 4.
• B.ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.
• C.ISP 1 has a peering relationship with ISP 2 and ISP 3.
• D.ISP 1 has a transit relationship with ISP 2 and ISP 4.
• E.ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.

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Question No : 5

Click the exhibit.



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

• A.The update is sent to router R2 in ISP 1.
• B.The update is sent to routers R2 and R3 in ISP 1.
• C.The update is sent to all routers in ISP 1.
• D.The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.

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Question No : 6

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

• A."client2" routes will be only tagged with communities 'East'' and "South".
• B."client2" routes will be tagged with community "East".
• C."client2" routes will only be tagged with community "South".
• D."client2" routes will be rejected.

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Question No : 7

The user of an Alcatel-Lucent 7750 SR wants to 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?

• A.Configure router bgp shutdown
• B.Clear router bgp neighbor <ip-address> soft
• C.Clear router bgp neighbor <ip-address> soft-inbound
• D.Clear router bgp protocol

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Question No : 8

Click the exhibit.



Given the following configuration of router R1, what can be said about the function of each of AS 65540s routers?

• A.Routers R1 and R2 are redundant route reflectors with clients R3 and R4.
• B.Routers R3 and R4 are route reflectors with clients R1 and R2.
• C.Router R1 is a route reflector with clients R2, R3 and R4.
• D.Router R1 is a route reflector with clients R3 and R4.

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Question No : 9

Which of the following statements regarding route reflectors is TRUE?

• A.Route reflectors propagate BGP learned routes to their clients.
• B.Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the A
• C.Route reflectors disable iBGP split horizon for all iBGP peers in the A
• D.Route reflectors do not work in conjunction with confederations.

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Question No : 10

Click the exhibit.



Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540".
Which of the following regarding updates originating in AS 65540 is TRUE?

• A.Router R3 rejects all updates originating in AS 65540.
• B.Router R3 accepts updates received from router R1 and rejects updates transited through router R2.
• C.Router R3 accepts updates transited through router R2 and rejects updates received from router R1.
• D.Router R3 accepts updates from both routers R1 and R2.

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Question No : 11

The following policies are configured and exported using "export "Policy-1" "Policy-2"".



Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?

• A.Client-1 routes only.
• B.Client-2 routes only.
• C.Client-1 and Client-2 routes.
• D.Neither Client-1 nor Client-2 routes.

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Question No : 12

What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?

• A.Policy changes are delayed until the peer router with the affected routes reboots.
• B.Policy changes are delayed until route updates for affected BGP routes are received from peers.
• C.Policy changes are delayed until BGP sessions are cleared or BGP is reset.
• D.Policy changes are delayed until the router reboots.

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Question No : 13

An Alcatel-Lucent 7750 SR receives a route from an iBGP peer with a MED value of 500.
What MED value is sent to eBGP peers?

• A.100
• B.The IGP cost
• C.500
• D.None

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Question No : 14

Why is a full mesh of iBGP peers required?

• A.To ensure proper route propagation inside a transit A
• B.To ensure that all routers are directly connected.
• C.To ensure that all routers run iBGP inside a transit A
• D.To maximize control plane scalability.

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Question No : 15

Which of the following regarding the TTL of a BGP message is TRUE?

• A.TTL is a well-known mandatory BGP attribute.
• B.The default TTL value of an eBGP message is 1, and 64 for an iBGP message.
• C.The default TTL value of an iBGP message can be modified using the multihop command.
• D.The default TTL value of an eBGP message can be modified using the "ttl-security" command.

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