Question 1

A steering pool defines _____________.

Options :

A : a range of ports used to route media flows as they egress the Session Border Controller

B :

an IP address and port the Session Border Controller uses for steering media to the external media server

C :

an IP address and range of ports the Session Border Controller will use to declare itself as the destination for media flows in a session

D :

a range of IP addresses and a pool of ports the Session Border Controller will use to declare itself as the destination for all subsequent media flows in a dialog

E :

arange of IP addresses used to route media flows as they egress the Session Border Controller

Answer: C

Question 2

You are troubleshooting a SIP routing issue and you haveaccess to the SIP call ow processed by the Session Border Controller. Which two steps are valid for troubleshooting this type of issues? (Choose two.)

Options :

A :

It is necessary to locate the SIP session to troubleshoot and check if there is a 404 Routes Not Found SIP error message.

B :

It is recommended to look for 183 Session Progress SIP error messages that indicate routing issues.

C :

t is recommended to check the called number by looking at the Request-URI of the INVITE message and making sure it is a validnumber to be routed.

D :

It is recommended to find the CANCEL method received by the Session Border Controller which typically identifies a SIP routing issue.

E :

It is necessary to find an initial INVITE received by the Session Border Controller which getsa 503 Service Unavailable SIP error message.

Answer: D,E

Question 3

What is thedrawback of configuring Policy-Based Realm Bridging (PBRB) without the assistance of Header Manipulation Rules (HMRs)?

Options :

A : Topology hiding is incomplete.

B :

The configuration requires a home realm to be defined, which can make privacy harder to achieve.

C : The configuration requires you to enable SIP-NAT bridging, which is complex.

D : The architecture is simple, and really designed for lab environments.

E : The performance is poor relative to other models

Answer: C

Question 4

Where are passwords and licensing information stored?

Options :

A : Non-Volatile Random Access Memory (NVRAM)

B : Content Addressable Memory (CAM)

C : RAMmemory

D : Synchronous Dynamic Random Access Memory (SDRAM)

E : Boot Flash

Answer: A

Question 5

What is the first thing you should do when you want the Session Border Controller to detect that anendpoint is behind a NAT/firewall device?

Options :

A :

Navigate to the sip-port configuration element and set the nat-traversal parameter to disabled

B :

Navigate to the sip-interface configuration element and set the nat-traversal parameter to never.

C :

Navigate to the sip-interface configuration element and set the nat-traversal parameter to always

D :

Navigate to the sip-port configuration element and set the nat-traversal parameter to enabled.

E :

Navigate to the sip-interface configuration element and set the nat-traversal parameter to detect

Answer: C

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