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Implementing Cisco Service Provider Mobility UMTS Networks (SPUMTS)

Question No: 31

Which option describes how the Diameter relay agent routes messages to Diameter servers?

1. based on IP address

2. based on destination realm

3. based on application used (Gx, Gy)

4. based on source realm

Answer: B

Question No: 32

In which two circumstances is Diameter Peer Discovery needed? (Choose two.)

1. The Diameter client is rejected by the peer.

2. The Diameter client must contact a first-hop Diameter agent.

3. The Diameter agent must reply to the connect request of a Diameter client.

4. The Diameter agent must search the next agent so that Diameter messages can reach the Diameter server.

5. The Diameter agent must close the session with a Diameter client.

Answer: B,D

Question No: 33

Refer to the exhibit.

The locally configured Diameter peer does not seem to be communicating with its remote peer. Which option describes the problem?

1. Ports are not correctly configured.

2. No common AVP was found during capabilities exchange procedure.

3. The transport layer connection is not established.

4. Diameter does not support TCP as a transport protocol.

Answer: C

Question No: 34

An airport is providing free one-hour mobile Internet service for passengers. At the end of the free one-hour service, the PCRF sends a Diameter command to the mobile packet core to stop the free service. Which Diameter command is sent by the PCRF?

1. CCR-U

2. RAR

3. CCR-T

4. STA

5. RAA

Answer: B

Question No: 35

In which two ways is GRE used in GGSN? (Choose two.)

1. to transport the subscriber traffic between MS and GGSN

2. to transport AAA packets between GGSN and the service provider RADIUS server

3. to transport AAA packets between GGSN and the corporate RADIUS server

4. to transport the enterprise subscriber packets to the corporate gateway

5. to transport the enterprise subscriber packets to the Internet

Answer: C,D

Question No: 36

Which IP protocol number is used by GRE?

1. 41

2. 47

3. 14

4. 51

5. 57

Answer: B

Question No: 37

Which option provides a secure connection between two endpoints as it encapsulates the IP payload?

1. transport mode IPsec

2. GRE

3. Internet Key Exchange security association

4. L2TP

Answer: A

Question No: 38

Which MPLS/BGP functionality can the Cisco ASR 5000 GGSN run in a service provider network?

1. provider edge router

2. customer edge router

3. autonomous system border router

4. provider edge and customer edge

5. provider router

Answer: B

Question No: 39

Which three applications use IPsec? (Choose three.)

1. PDN access

2. MAP

3. GTPv2

4. Mobile IP

5. L2TP – between GGSN acting as LAC and LNS

6. L2TP – between LAC and LNS on same node

7. Diameter

Answer: A,D,E

Question No: 40

Which option describes the advantage of using L2TP over IPsec versus IPsec only?

1. L2TP improves performance.

2. The overhead that is introduced is lower.

3. L2TP can transport protocols other than IP.

4. L2TP provides Layer 2 VPN functionality.

Answer: C

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