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Cisco 300-820 - Questions & Answers

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Question 1
Single choice

In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?

A.

Cisco Expressway-E and endpoints outside the enterprise

B.

Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P

C.

Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager

D.

Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise

Question 2
Single choice

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

A.

Advanced Encryption Standard

B.

IPsec

C.

Triple Data Encryption Standard

D.

force unencrypted

Question 3
Multiple choice

An organization has a domain name of example.com.

Which two SRV records are valid for a SIP and H 323 communication? (Choose two)

A.

_collab-edge._tls.example.com

B.

_sips_tcp.example.com

C.

_h323ls_tcp.example.com

D.

_h323ls._udp.example.com

E.

_sips._udp.example.com

Question 4
Multiple choice

Refer to the exhibit.

Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)

A.

XMPP: TCP 7400

B.

SIP: TCP 7001

C.

SIP TCP 5061

D.

Media: UDP 36012 to 59999

E.

HTTPS: TCP 8443

Question 5
Single choice

Refer to the exhibit.

In an environment SIP devices are registered to CUCM and H.323 devices to VCS.

What would be required to enable these calls to setup correctly?

A.

Create a presearch transform.

B.

Change the domain of SIP endpoint A to cisco.com.

C.

Disable SIP in the external zone.

D.

Change the interworking mode to On.

Question 6
Single choice

Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?

A.

_collab-edge on port 8443

B.

_cisco-uds-edge on port 5061

C.

_collab-edge on port 5061

D.

_cisco-uds on port 8443

Question 7
Single choice

A MRA deployment is being configured where one of the requirements is for registered Jabber users to pull directory photos from an internal server.

What should be configured on the Expressway-C so that MRA registered clients reach this server?

A.

A search rule must be created to route the requests to Cisco UCM.

B.

The directory photo server must be added to the HTTP allow list.

C.

A neighbor zone must be created to the directory photo server.

D.

The directory photo server FQDN must be added to the Expressway-C certificate.

Question 8
Single choice

Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?

A.

Off

B.

Auto

C.

Force Encrypted

D.

Best Effort

Question 9
Multiple choice

What are two reasons why port 8443 is unreachable from the Internet to the Expressway- E? (Choose two.)

A.

The MRA license is missing on the Expressway-E.

B.

The Unified Communications zone is down.

C.

Transform is not configured on Expressway-E.

D.

The SRV record for_cisco-uds is misconfigured.

E.

The firewall is blocking the port.

Question 10
Single choice

Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?

A.

IPS

B.

SAML authentication

C.

Cisco Unified CM publisher address

D.

SSO

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