Free Cisco 400-051 Exam Dumps Questions & Answers


Exam Code/Number:	400-051Join the discussion
Exam Name:	CCIE Collaboration Written
Certification:	Cisco
Free Question Number:	660
Publish Date:	Jul 16, 2026
# of views:	6448
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Total 660 questions

Question 1

What is the minimum number of H.225 messages required to establish an H.323 call with bidirectional media?

Question 2

Refer to the exhibit. A VoIP engineer must configure QoS for the switch ports.
Which two set of commands configure switch port to remap every incoming packet aside from the default QoS? (Choose two).

A.FastEthernet 0/20
Mls qos cos override
B.FastEthernet 0/20
No mls qos trust cos
C.FastEthernet 0/20
No mls qos trust device cisco-phone
D.FastEthernet 0/20
mls qos cos 3
E.FastEthernet 0/20
No switchport priority extend trust
F.FastEthernet 0/20
Switchport priority extend cos

Question 3

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

A.Cisco SIP Proxy
B.Cisco Intercluster Sync Agent
C.Cisco Presence Engine
D.Cisco XCP Router
E.Cisco XCP Authentication Service
F.Cisco ASL Web Service

Question 4

Refer to the exhibit. Your customer sent you this debug output, captured on a Cisco IOS router (router A), to troubleshoot a problem where all H.323 calls that originate from another Cisco IOS router (router B) are being dropped almost immediately after arriving at router A.
What is the reason for these disconnected calls?

A.Calls were rejected because the VoIP dial peer 1002 was not operational.
B.Calls were rejected because the called number was denied on a configured class of restriction list on router A.
C.Calls were unsuccessful because the router B IP address was not found in the trusted source IP address list on router A.
D.Calls were unsuccessful because of internal, memory-related problems on router A.
E.Calls were rejected by router A because it received an admission reject from its gatekeeper because of toll fraud suspicion.

Question 5

Which two statements describe the remote supervisory monitoring feature in Cisco Unified Contact Center Express? (Choose two.)

A.It works with SPAN port monitoring only.
B.Agents are aware that they are being silently monitored.
C.Calls can be silently monitored from a PSTN phone.
D.It supports G.711 and G.729 codecs.
E.It does not require a Cisco Supervisor Desktop or any data network connectivity.
F.It is supported on Cisco Unified CCX Enhanced and Premium editions.