How doesthe Session Border Controller ensure that a pinhole is kept open for persistent communication to a SIP endpoint behind a NAT device?

A. by changing the expires= parameter to a defined value in 200 OK responses to REGISTERs

B. by changing the expires= parameter to a defined value in 200 OK responses to INVITEs

C. by issuing PINGs to the endpoint's NAT address

D. by sending Address Resolution Protocol (ARP) requests at a defined frequency

E. by sending messages at a defined frequency

What do you need to do to support ftp service on a media interface?

A. Add the IP address of the remote device to the hip-ip-list and ftp-address parameters.

B. Set the ftp-address parameter to enabled.

C. Add the IP address of the interface in the hip-ip-list and ftp-address parameters.

D. Set the hip-address parameter to enabled.

E. Add the IP address of the interface in the hip-ip-list and telnet-address parameters.

What mechanism isused to ensure adjacent devices can redirect their Ethernet traffic to the Session Border Controller that takes over, when a Session Border Controllers fails over?

A. Gratuitous ARP

B. Reverse ARP

C. Proxy ARP

D. HSRP

E. BOOTP

You wantto configure the maximum duration in seconds of any session in the Session Border Controller.

How would you accomplish this?

A. Navigate to the media-manager configuration element and configure the max-signaling- bandwidth parameter.

B. Navigate to the media-manager configuration element and configure the flow-time-limit parameter.

C. Navigate to the sip-config configuration element and configure the operation-mode parameter.

D. Navigate to the sip-config configuration element and configure theflow-time-limit parameter.

E. Navigate to the media-manager configuration element and configure the latching parameter.

Which node automatically assumes the active role when peers boot simultaneously and their health scores are equivalent in a High Availability (HA) scenario?

A. the node with the highest wancom IP address

B. the node that is configuredas secondary C. the node that had the role of active last

D. the node with the lowest wancom IP address

E. the node with the highest round-robin score

Which three statements are true about SIP, per RFC 326? (Choose three.)

A. SIP does not provide for resource reservation.

B. SIP defines native methods for negotiating media streams.

C. A SIP transaction occurs between a client and a server.

D. To set up a voice session, SIP relies on protocols such as SDP and RTP.

E. SIP signaling can only be used for voice over IP thereby limiting its use as a general signaling protocol.

You are configuring steering pools. After executing the done command, you get this error message:

error 409 saving configuration SteeringPool.

Identify the cause ofthe error.

A. The realm-id parameter value of the steering-pool refers to a realm-config element that already exists in the configuration.

B. The ip-address parameter of the steering-pool has the same value as the address parameter of a sip-port configuration element.

C. The realm-id parameter value of the steering-pool refers to a realm-config element that does not exist in the configuration.

D. Another steering-pool configuration element with same ip-address, realm-id, start-port, and end-port parameters values already exists in the configuration.

E. Another steering-pool configuration element with same ip-address and realm-id but with different start-port and end-port parameters values already exists in the configuration.

You want to prevent the Session Border Controller from generating aunique Call-ID and from modifying the dialog tags.

How would you accomplish this?

A. Navigate to the sip-interface configuration element and set the dialog-transparency parameter to disabled.

B. Navigate to the sip-config configuration element and set the dialog-mapping parameter to disabled.

C. Navigate to the sip-config configuration element and set the call-id-transparency parameter to disabled.

D. Navigate to the sip-config configuration element and set the dialog-transparency parameter to disabled.

E. Navigate to the sip-config configuration element and set the dialog-transparency parameter to enabled.

In which two ways can you remove support for telnet from a media interface? (Choose two.)

A. Navigate to the network-interface configuration element and run the delete-hip-ip command.

B. Navigate to the phy-interface configuration element and run the remove-hip-ip command.

C. Navigate to the network-interface configuration element and run the remove-telnet-ip command.

D. Navigate to the network-interface configuration element and run the remove-hip-ip command.

E. Navigate to the phy-interface configurationelement and run the remove-telnet-ip command.

When setting up the registration-caching parameter to enabled in the sip-interface configuration element, _____________.

A. the Session Border Controller will never use the SIP-NAT mechanism for routing

B. the Session Border Controller will not use the registration cache for routing

C. all endpoints in the realm will be cached when registered

D. only endpoints behind NAT in the realm will be cached when registered

E. the Session Border Controller will never use the local-policy mechanism for routing