Implementing Cisco Collaboration Cloud and Edge Solutions (300-820) Free Practice Test

Question 1

Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?

A. bandwidth

B. connection

C. version

D. name

Correct Answer: D

Question 2

Which media encryption mode can be configured on an Expressway zone?

A. force unencrypted

B. Triple Data Encryption Standard

C. Advanced Encryption Standard

D. IPsec

Correct Answer: A

Question 3

Refer to the exhibit.

Refer to the exhibit. A company has a Cisco collaboration infrastructure that contains Cisco UCM and Cisco Expressway-C and Expressway-E for Mobile and Remote Access. When the engineer sets up the environment to support B2B calling, they discover that the zone stale between Expressway-C and Cisco UCM failed. What must the STEP Trunk Security Profile setting be changed to in Cisco UCM to resolve the issue?

A. UDP for the outgoing transport type

B. TCP for the incoming transport type

C. value other than the default listening port for incoming SIP connections on Cisco UCM

D. value other than the default listening port for outgoing SIP connections on Cisco UCM

Correct Answer: B

Question 4

When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?

A. IP dialing

B. E.164

C. URI dialing

D. DN dialing

Correct Answer: C

Question 5

What allows endpoints behind a NAT to discover the paths through which they will pass media?

A. SNMP

B. TLS

C. RTP

D. ICE

Correct Answer: D

Question 6

When does the Webex App Endpoint send media to the Video Mesh cluster during a meeting?

A. when the Webex cloud media services are offline

B. when there is insufficient bandwidth at the internet edge

C. when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services

D. when there is insufficient bandwidth at the MPLS WAN edge

Correct Answer: C

Question 7

A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.
What else can be done to solve this problem?

A. Change the FQDN of the Expressway.

B. Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.

C. Create a new CSR with new information on the SAN field.

D. Change the domain name.

Correct Answer: B

Question 8

What is the default file extension for saving Cisco Expressway-C backups when using the Google Chrome browser?

A. .zip

B. .tar.gz.gz

C. .tar.gz.enc

D. .tar.tar.gz

Correct Answer: C

Question 9

Refer to the exhibit.

Which two numbers match the regular expression? (Choose two.)

A. 2091652010224

B. d20d16d20d22

C. 209165200225

D. 209165200224

E. d209d165d200d224

Correct Answer: C,D

Question 10

Where can the administrator manage a Webex tenant?

A. Cisco Webex management portal

B. Cisco Webex control panel

C. Cisco Webex Control Hub

D. Cisco Webex administrator portal

Correct Answer: C

Question 11

Which two statements about Expressway media traversal are true? (Choose two.)

A. Both Expressway Edge interfaces can be NATed.

B. The Unified Communications traversal zone can be used for Mobile and Remote Access.

C. Cisco Unified Communications Manager zone can be either traversal server or client.

D. Expressway Control is the traversal server installed in the DMZ.

E. The Expressway Edge must be put in a firewall DMZ segment.

Correct Answer: B,E

Question 12

Refer to the exhibit.

Cisco Unified Communications Manager routes the call via the Webex Meetings route list and route group to the Video Mesh cluster Node#1 in the Video Mesh cluster is hosting the meeting and has reached full capacity, but other nodes in the cluster still have spare capacity.
What happens to the participant's call?

A. The call fails.

B. The call is queued.

C. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.

D. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.

Correct Answer: C

Question 13

Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.

Correct Answer:

Question 14

Which describes what could do on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

A. A static NAT route could be added to the firewall to bridge the two networks.

B. Application layer gateway could be enabled to bridge the media traffic.

C. The Expressway-E could be enabled for Dual-NIC capability.

D. The Expressway-E could be enabled for interworking.

Correct Answer: C

Question 15

Which mechanism does TLS use to validate identity?

A. username and a password

B. IP address of the peer

C. shared secret

D. server certificate

Correct Answer: D

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Cisco Implementing Cisco Collaboration Cloud and Edge Solutions (300-820) Free Practice Test