Which statement about H.323 Gatekeeper Call Admission Control is true?

Which statement about H.323 Gatekeeper Call Admission Control is true?
A. Gatekeeper Call Admission Control applies to centralized Cisco Unified Communications deployments that use locations based Call Admission Control.
B. Gatekeeper Call Admission Control applies to distributed Cisco Unified Communications deployments.
C. Gatekeeper Call Admission Control applies only to distributed Cisco Unified Communications Express deployments.
D. Gatekeeper Call Admission Control setting is configured in Cisco Unified Communications Manager.

Answer: B
Explanation: in distributed call processing deployments on a simple hub-and-spoke topology, you can implement call admission control with a Cisco IOS gatekeeper. In this design, the call processing agent (which could be a Unified CM cluster, Cisco Unified Communications Manager Express (Unified CME), or an H.323 gateway) registers with the Cisco IOS gatekeeper and queries it each time the agent wants to place an IP WAN call.
Link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/7x/cac.html#wp1044743

Which three devices or applications support call preservation? (Choose three.)

Which three devices or applications support call preservation? (Choose three.)
A.a software conference bridge
B.Cisco Unified IP Phone 7962G
C.an annunciator
D.SIP trunks
E.JTAPI applications
F.TAPI applications
G.CTI applications
H.third-party H.323 endpoints

Answer: A,B,D
Explanation: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/9_0_1/CUCM_BK_CD2F83FA
_00_cucm-system-guide-90/CUCM_BK_CD2F83FA_00_systemguide_chapter_01011.html#CUCM_RF_C98194B0_00

Assuming the regions configuration to BR only permits G.729 codec, how many calls are allowed for the BR location?

Refer to the exhibit.

image105 - 
Assuming the regions configuration to BR only permits G.729 codec, how many calls are allowed for the BR location?
Assuming the regions configuration to BR only permits G.729 codec, how many calls are allowed for the BR location?
A. Total of four calls; two incoming and two outgoing.
B. Total of two calls in either direction.
C. Total of four calls to the BR location. Outgoing calls are not impacted by the location configuration.
D. Total of four calls in either direction.
E. Two outgoing calls. Incoming calls are unlimited.

Answer: D
Explanation: In performing location bandwidth calculations for purposes of call admission control, Cisco Unified Communications Manager assumes that each G.729 call stream consumes 24 kb/s amount of bandwidth
Link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a02cac.html#wpxref28640

Which two options should be selected in the SIP trunk security profile that affect the SIP trunk pointing to the VCS? (Choose two.)

Which two options should be selected in the SIP trunk security profile that affect the SIP trunk pointing to the VCS? (Choose two.)
A. Accept Unsolicited Notification
B. Enable Application Level Authorization
C. Accept Out-of-Dialog REFER
D. Accept Replaces Header
E. Accept Presence Subscription

Answer: A, D

Which configuration command disables the secondary dial tone on the branch office ISR for users calling from the PSTN into the branch office during a WAN failure?

Which configuration command disables the secondary dial tone on the branch office ISR for users calling from the PSTN into the branch office during a WAN failure?
A. direct-inward-dial
B. voice translation-rule
C. incoming called-number
D. application

Answer: A

What is the cause of this issue?

While troubleshooting a connectivity issue between Cisco Unified Communications Manager,
Expressway-C, and Expressway-E, an engineer sees this output in the Expressway-E logs.
Event=”Authentication Failed” Service=”SIP” Src-ip=”10.50.2.1”
Src-port=”25723” Detail=”Incorrect authentication credential for user”
Protocol “TLS” Method=”OPTIONS” Level=”1”
What is the cause of this issue?
A.The Expressway-C Traversal Server username/password do not match the Expressway-E
Traversal Zone username/password.
B.The Expressway-C Traversal Client username/password do not match the Expressway-E
Traversal Server username/password.
C.The Expressway-C Traversal Zone username/password do not match the Expressway-E Traversal
Zone username/password.
D.The Expressway-C Traversal Zone username/password do not match the Expressway-E Traversal Client username/password.
E.The Expressway-C Traversal Server username/password do not match the Expressway-E
Traversal Client username/password.

Answer: B

Which statement is true when device mobility mode is enabled or disabled in the Phone Configuration window?

Which statement is true when device mobility mode is enabled or disabled in the Phone Configuration window?
A. The device mobility mode phone settings take precedence over the service parameter settings.
B. The service parameter settings take precedence over the device mobility mode phone settings.
C. The combined service parameter settings and the device mobility mode phone settings will be used.
D. The default settings will be used due to the conflicts.

Answer: A

Which two locations are the best locations that an end user can use to determine if an IP phone is working in SRST mode? (Choose two.)

Which two locations are the best locations that an end user can use to determine if an IP phone is working in SRST mode? (Choose two.)
A. Cisco Unified Communications Manager Administration
B. IP phone display
C. Cisco Unified SRST Router
D. Cisco Unified MGCP Fallback Router
E. physical IP phone settings

Answer: B, E
Explanation: IP Phone display and Physical phone IP settings are two locations were an end user can determine if an IP phone is working in SRST mode.
Link: http://my.safaribooksonline.com/book/telephony/1587050757/survivable-remote-site-telephony-srst/529