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Exam Code : 4A0-C02
Exam Name : Okia SRA Composite
Vendor Name : "Nokia"






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4A0-C02


Okia SRA Composite


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Question: 190


Which of the following commands would correctly configure the confederation AS number as 65200 with a member AS of 65202?

  1. config>router- confederation 65200 members 65202

  2. config>router>bgp= confederation 65200 members 65202

  3. config>router= confederation 65202 members 65200

  4. config>router>bgp= confederation 65202 members 65200




Answer: A
Question: 191 Click the exhibit.


Over which BGP session will router B learn the 10.1.1.0/24 prefix?

A. The session between router A and router

C. The session between router C and router

E. The session between router D and router

G. Router B will learn the prefix over all of the sessions, then it will choose the best route.




Answer: A



Question: 192


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

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

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

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

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



Answer: B



Question: 193


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

  1. TTL is a well-known mandatory BGP attribute.

  2. The default TTL value of an eBGP message is 1, and 64 for an iBGP message.

  3. The default TTL value of an iBGP message can be modified using the multihop command.

  4. The default TTL value of an eBGP message can be modified using the "ttl-security" command.




Answer: B
Question: 194 Click the exhibit.

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?

  1. R1-R3-R8

  2. R1-R2-R4-R8

  3. R1-R3-R4-R8

  4. R1-R2-R4-R3-R8




Answer: B



Question: 195


What class of attribute is Originator_ID?

  1. Well-known mandatory.

  2. Well-known discretionary.

  3. Optional transitive.

  4. Optional non-transitive.




Answer: D
Question: 196 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?

  1. ISP 1 has a peering relationship with ISP 2 and ISP 4.

  2. ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.

  3. ISP 1 has a peering relationship with ISP 2 and ISP 3.

  4. ISP 1 has a transit relationship with ISP 2 and ISP 4.

  5. ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.




Answer: B



Question: 197


Which of the following best describes the purpose of advertise-external?

  1. It enables a BGP speaker to advertise multiple external routes to iBGP peers.

  2. It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.

  3. It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.

  4. It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.




Answer: B



Question: 198


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


  1. "client2" routes will be tagged with communities "West" and "North".

  2. "client2" routes will be tagged with communities "West", "North" and "South".

  3. "client2" routes will be tagged with community "West".

  4. "client2" routes will be tagged with community "South".




Answer: C



Question: 199


Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

  1. ARIN

  2. ICANN

  3. RIPE NCC

  4. LACNIC

  5. APNIC




Answer: C



Question: 200


Which of the following regarding BGP confederations is FALSE?

  1. A confederation is a collection of Autonomous Systems advertised as a single AS number to BGP speakers outside the confederation.

  2. Each member AS must either maintain a full mesh of iBGP sessions, or use route reflection.

  3. Confederations can be used to subdivide ASs that have a large number of BGP speakers into smaller domains.

  4. A full mesh of intra-confederation eBGP sessions is required between the member ASs.




Answer: D