Cisco CCIE Collaboration Written - 400-051 Exam Questions [2026]

QUESTION NO: 1
When route patterns 200X and 200[0-9] exist in the same partition, how does a Cisco Unified Communications Manager select a matching pattern when an IP phone places a call to 2005?

A. Cisco UCM alternates between the two patterns. B. Cisco UCM chooses one of the patterns using a logic that is not configurable. C. 200X is selected because it has the least characters. D. Cisco UCM randomly selects one of the patterns. E. 200[0-9] is selected because it is the most specific match.

Correct Answer: E

QUESTION NO: 2
Which element was added to H.225 messages to enable Fast Connect in H.323 version 2?

A. fastStart B. H.245 PDU C. User-User Information D. fastConnect E. Connection Information

Correct Answer: A

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QUESTION NO: 3
In Cisco IOS routers, which chipset is the PVDM2-32 DSP hardware based on?

A. C549 B. C5510 C. C5421 D. Broadcom 1500 E. C5441

Correct Answer: B

QUESTION NO: 4
Which parameter in an RQNT message is used by a Cisco Unified CM to request a Cisco IOS MGCP gateway to report an on-hook event on an analog endpoint?

A. Detect Events B. Event States C. Connection Mode D. Observed Events E. Requested Events

Correct Answer: E

QUESTION NO: 5
Which two parameters, in the reply of an MGCP gateway to an Audit Endpoint message, indicate to a Cisco Unified CM that it has an active call on an endpoint? (Choose two)

A. Bearer Information B. Connection ID C. Call ID D. Connection Parameters E. Connection Mode F. Capabilities

Correct Answer: A,B

QUESTION NO: 6
The Director of information Security of your company wants to log all calls when a user's phone speed dials to a busy PSTN destinations and hangs up in less than one second in Call Detail Records. Which option is the minimum Cisco Unified CM Service Parameter configuration that is needed to ensure compliance to this policy?

A. Set CDR Enabled Flag and CDR Log Calls with Zero Duration Flag to True. B. Set CDR Log Calls with Zero Duration Flag to True. C. Set CDR Enabled Flag to True and set Call Diagnostics Enabled to Enable Regardless of CDR Enabled Flag. D. Set CDR Enabled Flag to True and set Call Diagnostics Enabled to Enable Only When CDR Enabled Flag is True. E. Set CDR Enabled Flag to True.

Correct Answer: A

QUESTION NO: 7
A Cisco Unity Connection administrator receives a request from a user who wants the ability to change the caller input option 0 in their voicemail box as needed without calling for support. How does the administrator grant these rights to the user?

A. The administrator can set the caller input to "Transfer to alternate contact number" so the user can log into their voicemail account through their Cisco PCA page and set their alternate contact number. B. The administrator informs the user that this feature is a built-in option to the user Cisco PCA page under caller input. C. The administrator can create a new call handler of which the user is an owner. The user controls the destination of that call handler by logging into the call handler via greetings administrator. D. The administrator informs the user that this feature is a built-in option for the user in the TUI under personal settings. E. The administrator can set the caller input to "Transfer to alternate contact number" so the user can log into their voicemail account through the TUI and set their alternate contact number.

Correct Answer: E

QUESTION NO: 8
A user has reported that when trying to access Visual Voicemail the Following error is received:
"Unable to open application please try again later if it continues to fail contact your administrator'.
The collaboration engineer working on the problem found the following on the phone logs CVMInstallerModule STATUS_install_cancelled STATUS_INSTALL) _ERROR [thread=installer MQThread][class=cip midp midletsuite installerModule][function=update status] Midlet install Canceled/ERROR...visual Voicemail

How can this issue be resolved?

A. Replace the sever name with the server IP on service URL field B. Eliminate the space in the service Name field C. Configure DNS on phone configuration so it can resolve server name D. Check the Enable checkbox on IP phone service configuration

Correct Answer: B

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QUESTION NO: 9
Which two options are benefits of moving the application development workload to the cloud?
(Select Two)

A. It provides a more secure environment B. High availability and redundancy is handled by the hypervisor. C. it provides you full control over the software packages and vendor used D. The workload can be moved or replicated easily. E. The application availability is not affected by the loss of a single virtual machine

Correct Answer: D,E

QUESTION NO: 10
Refer to the exhibit. How many SIP signaling transaction(s) took place in this SIP message exchange between two SIP user agents?

A. 1 B. 6 C. 3 D. 5 E. 2 F. 4

Correct Answer: C

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QUESTION NO: 11
Which three requirements must be met to share Enhanced Location Based Call Admission Control bandwidth usage between clusters? (Choose three.)

A. Links must be created to the Shadow location. B. SIP ICT must use the Shadow location. C. The location name must be the same on both clusters. D. A Location Bandwidth Manager Hub Group must be created for each cluster. E. The Cisco Unified Communications Manager version must be 8.6 or higher. F. The Location Bandwidth Manager Service should be started on only two servers in each cluster.

Correct Answer: B,C,D

QUESTION NO: 12
Which statement about high availability for XMPP federation in Cisco IM and Presence is true?

A. A maximum of two Cisco IM and Presence nodes can be enabled for XMPP federation. B. The XMPP federation-enabled nodes should have different priorities and weights on the published DNS SRV for proper inbound request node selection. C. A single DNS SRV record that resolves to an XMPP federation-enabled node must be published on a public DNS server for inbound request routing. D. Cisco IM and Presence load balances outbound requests across both nodes that are enabled for XMPP federation in a subcluster. E. Cisco IM and Presence load balances outbound requests across all nodes that are enabled for XMPP federation.

Correct Answer: E

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QUESTION NO: 13
Refer to the exhibit. A VOIP engineer must configure QoS for the switch ports to remap PC traffic to COS 2 while allowing Cisco phone COS values to be used on the network. Which three commands satisfy these requirements? (Choose three)

A. FastEthernet 0/15
mls qos cos 2 B. FastEthernet 0/15
No mls qos cos 4 C. FastEthernet 0/15
Switchport priority extend cos D. FastEthernet 0/15
no switchport priority extend trust E. FastEthernet 0/15
mls qos cos override F. FastEthernet 0/15
no mls qos cos override G. FastEthernet 0/15
no mls qos trust device cisco-phone

Correct Answer: A,C,D

QUESTION NO: 14
When Single Inbox is configured, what will happen to an email message that was moved from any Outlook folder to the Voice Outbox folder?

A. The move will fail because the operation is not supported. B. The email message will be permanently deleted and will not be retrievable. C. The email message will be kept in the Voice Outbox folder. D. The email message will be moved to the Deleted Items folder. E. The email message will be delivered to Cisco Unity Connection.

Correct Answer: D

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