cisco 400-051 practice test

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

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

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

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

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

Which tag in the SIP header is used by Cisco Unified Communications Manager to deliver a blended
identity of alpha URI and number?

• A. x-cisco-number
• B. x-cisco-uri
• C. x-cisco-serviceuri
• D. x-cisco-callinfo
• E. x-cisco-service-control

Your IT Company has been tasked to automate their view of the environment. The CTO has instructed
to use Ansible focusing on value-added tasks. Which four integrations would you use to achieve this
outcome? (Choose four.)

• A. Devops tools
• B. Infrastructure
• C. Management Applications
• D. Virtualization
• E. Networks
• F. Containers
• G. Kubernetes

Which two descriptions of characteristics of the SIP provisional Response Acknowledgement
message are true? (Choose two)

• A. It must be acknowledged with an ACK message.
• B. It is sent by the UAC after receiving the “Require: 100rel” header in a previous message from the UAS.
• C. It is sent by the UAC after receiving the “Require: PRACK” header in a previous message from the UAS.
• D. It must be acknowledged with a “200 OK” message.
• E. It is sent by the UAS after receiving the “Supported: 100rel” header in the previous message from the UAC.
• F. It is sent by the UAS after receiving the “Supported: PRACK” header in a previous message from the UAC.

What happens to an inbound call to a Cisco Meeting Server (CMS) that did not match any incoming
call handling rules?

• A. CMS will try to manage the domain in the Outbound Call rules
• B. CMS will reject the call
• C. CMS will try to match the domain in the Call Forwarding rules.
• D. CMS will route the call to the default Space.
• E. CMS will ignore the call.

Refer to the exhibit.

Refer to the exhibit. Which description of a User Agent Server that sends this message is true?

• A. It is not possible for the UAS to send this message
• B. The UAS sends this single message in response to an earlier INVITE that contains PRACK
• C. The UAS sends this message in response to an earlier PRACK received
• D. The UAS sends this message in response to an earlier ACK received
• E. The UAS sends this message in response to an earlier INVITE received