cisco 400-051 practice test

CCIE Collaboration Written

Last exam update: Nov 18 ,2025
Page 1 out of 11. Viewing questions 1-15 out of 158

Question 1

Refer to the exhibit.

Refer to the exhibit. Which Cisco IOS SIP profile is valid for copying value from the “Diversion” header
to the “From” header in a SIP INVITE message?

  • A. Option
  • B. Option
  • C. Option
  • D. Option
  • E. Option
Mark Question:
Answer:

C

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Question 2

Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber
clients from anywhere on the Internet. Which two configuration records does a Jabber client in the
HTTPS “get_edge_config” message after it successfully establishes a secured connection with a Cisco
Expressway-E? (Choose two.)

  • A. DNS SRV record for _cisco-uds
  • B. FQDN for CUCM Home UDS server
  • C. DNS SRV record for _collab-edge
  • D. FQDN for IM&P server
  • E. FQDN for expressway-C
  • F. SIPEdgeServer
Mark Question:
Answer:

A, D

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Question 3

Which statement about what happens to a Cisco IOS SIP VoIP dial-peer that never received any
responses to its out-of-dialog OPTIONS ping is true?

  • A. Its admin state will be up but operational state will be down.
  • B. Its admin and operational state will remain up
  • C. Its admin state will be up but operational state will be “busy-out”
  • D. Its admin and operational state will be down
  • E. Its admin and operational state will be “busy-out”
Mark Question:
Answer:

A

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Question 4

A service provider wants to use a controller to automate the provisioning of service function
chaining. Which overlay technology can be used with EVPN MP-BGP to create the service chains in
the data center?

  • A. 802.1Q
  • B. VXLAN
  • C. MPLS L2VPN
  • D. Provider Backbone bridging EVPN
Mark Question:
Answer:

B

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Question 5

Refer to the exhibit.

Refer to the exhibit. The snippet is part of a PRT log from a Jabber for Windows user who is unable to
login via Mobile and Remote Access (MRA). Which is the root cause of this issue?

  • A. The Expressway-E is not reachable on port 8443 due to firewall or network connectivity issue
  • B. The Expressway-E is reachable on port 8443 but it rejects the connection due to client-side certificate issue
  • C. The Expressway-E certificate is self-signed
  • D. _collab-edge._tls.abc.com DNS SRV record is not created in the external DNS server
  • E. The user is trying to login from internal company network
Mark Question:
Answer:

A

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Question 6

Which Cisco IOS-XE dial-peer command has the highest preference for inbound H.323 dial-peer
matching?

  • A. Incoming URI to<Uri-tag>
  • B. Answer-address <number-string>
  • C. Incoming called-number <number-string>
  • D. Incoming calling-number e164-pattern-map <pattern-map-no>
  • E. Destination-pattern <number-string>
Mark Question:
Answer:

C

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Question 7

Which two software components in Cisco Meeting Server deployment supports clustering for
resilience only? (Choose two)

  • A. Call Bridge
  • B. XMPP Server
  • C. Database
  • D. Web Bridge
  • E. TURN Server
  • F. Recorder
  • G. Streamer
Mark Question:
Answer:

B, C

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Question 8

Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber
clients from anywhere on the internet. Which two DNS queries must a Jabber client resolve from
outside of a corporate network? (Choose two.)

  • A. DNS SRV record for _cuplogin._tls.abc.com
  • B. DNS SRV record for _collab-edge._tls.abc.com
  • C. DNS A record for the Expressway-E FQDN
  • D. DNS A record for _collab-edge._tls.abc.com
  • E. DNS SRV record for _cuplogin._tcp.abc.com
  • F. DNS SRV record for _cisco-uds._tcp.abc.com
  • G. DNS A record for _cisco-uds._tls.abc.com
Mark Question:
Answer:

B, C

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Question 9

Refer to the exhibit.

Refer to the exhibit. In a single Split CMS deployment, which CMS server components do WebRTC
clients and external CMA clients attempt to contact for initial CMS connections?

  • A. WebRTC clients first try to connect to the load balancer while external CMA clients try to reach the TURN Server
  • B. Both WebRTC clients and external CMA clients try to connect to the Webbridge first
  • C. WebRTC clients first try to connect to the Webbridge while external CMA clients attempt to connect to the Load Balancer
  • D. WebRTC clients first try to connect to the Load Balancer while external CMA clients try to reach the Webbridge
  • E. Both WebRTC clients and external CMA clients try to connect to the Load balancer first
Mark Question:
Answer:

C

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Question 10

Which four protocols does the Cisco Jabber client use to Interact with Cisco Unity Connection?
(Choose four)

  • A. SOAP
  • B. REST
  • C. HTTP
  • D. RTP
  • E. IMAP
  • F. XMPP
  • G. XML
  • H. JSON
Mark Question:
Answer:

B, C, D, E

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Question 11

Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber
clients from anywhere on the internet. Which three DNS records have to be provisioned for a
successful MRA login from outside of the corporate network? (Choose three.)

  • A. DNS SRV record for _collab-edge._tls.abc.com in the external DNS server
  • B. DNS A record for the Expressway-E FQDN in the external DNS server
  • C. DNS A record for _collab-edge_tls.abc.com in the corporate internal DNS server
  • D. DNS A record for the Expressway- FQDN in the external DNS server
  • E. DNS A record for _collab-edge_tls.abc.com in the external DNS server
  • F. DNS SRV record for _cisco-uds_tcp.abc.com in the corporate internal DNS server
  • G. DNS SRV record for _cisco-uds_tcp.abc.com in the external DNS server
Mark Question:
Answer:

A, B, F

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Question 12

Which three Cisco Unity Connection call handler greetings can be overridden by the internal
greeting? (Choose three.)

  • A. error
  • B. alternate
  • C. holiday
  • D. closed
  • E. busy
  • F. standard
Mark Question:
Answer:

C, D, F

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Question 13

In OpenStack, which two statements about the NOVA component are true? (Choose two)

  • A. It provides persistent block storage to running instances of virtual machines
  • B. It tracks cloud usage statistics for billing purposes
  • C. It is considered the cloud computing fabric controller
  • D. It launches virtual machine instances
  • E. It provides the authentication and authorization services
Mark Question:
Answer:

C, D

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Question 14

How are queues serviced in Cisco IOS routers with the CBWFQ algorithm?

  • A. Weighted round robin based on assigned priority
  • B. First-in, first-out
  • C. Last-in, first-out
  • D. Weighted round robin based on assigned bandwidth
  • E. Strict priority based on assigned priority
Mark Question:
Answer:

D

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Question 15

Which of the following SIP 1xx responses does not use Provisional Response Acknowledgement?

  • A. 180 Ringing
  • B. 199 Early Dialog Terminated
  • C. 100 Trying
  • D. 183 Session in Progress
  • E. 182 Queued
Mark Question:
Answer:

C

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