New CCIE Collaboration 400-051 certification exam dumps

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Share some CCIE 400-051 exam questions and answers below.
Refer to the exhibit.

An engineer is trying to provision CUCME with three 8841 phones. However all phone fail to register.

Which two changes in the configuration would allow the phones to register? (Choose two)

A. The registrar server command must be added under the voice register global configuration

B. The IP address trusted authenticate command must be added under voice service voip

C. The source-address command must be added under the voice register global configuration

D. The local SIP proxy address must be configuration under the sip-ua configuration

E. The registrar server command must be added under the sip section of voice service voip

Answer: CE

Which three issues prevent a customer from seeing the presence status of a new contact in their Jabber contact list? (Choose three.)

A. Incoming calling search space on SIP trunk to IM&P

B. IM&P incoming ACL blocking inbound status

C. Subscribe calling search space on SIP trunk to IM&P

D. PC cannot resolve the FQDN of IM&P

E. Owner user ID is not set on device

F. Primary DN is not set in end user configuration for that user

G. Subscriber calling search space is not defined on user’s phone

Answer: BCD

Which three services must be stopped to change the IM & Presence service default domain setting of DOMAIN.NOT.SET? (Choose three.)

A. Cisco XCP Router

B. Cisco Intercluster Sync Agent

C. Cisco XCP Authentication Service

D. Cisco SIP Proxy

E. Cisco Presence Engine

F. Cisco AXL Web service

Answer: A,D,E

A collaboration engineer has been asked to implement secure real-time protocol between a Cisco Unified CM and SIP gateway.

Which option is a consideration for this implementation?

A. Only T.38 and Cisco fax protocol are supported

B. SIP require the all the time be sent in GMT

C. Call hold RE-INVITE is not supported

D. SRTP is supported only in cisco IOS 15.x and higher

Answer: B

Which two settings should be configured on the SIP Trunk Security Profile for the IM & Presence Service SIP Trunk? (Choose two.)

A. Check to enable Accept Presence Subscription.

B. Verify that the setting for Incoming Transport Type is TCP+UDP.

C. Configure Device Security Mode to Encrypted.

D. Check to enable Enable Application Level Authorization.

E. Configure the Outgoing Transport Type to TLS.

Answer: A,B

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