Cisco 300-820 CLHCT Exam Questions Instant Access

Question 1

An engineer reviews the configuration of a pair of Expressway servers for a company with the domain example.com. The company allows toll fraud calls to reach the Cisco UCM only when it expects externally registered devices to call internal 5-digit extensions. The search history shows that the fraudulent calls have a destination URI of 8 or more digits and several domains. What must the engineer configure to prevent all toll fraud calls from going past the Expressway-E to the internal network?

Asearch rules to only route calls with a destination URI of 5 to 8 digits long on the Expressway-E

BCPL that blocks calls with a destination domain other than example.com on the Expressway-C

Csearch rules to only route calls with a destination domain ofexample.com on the Expressway-E

DCPL to block calls with a destination URI with 8 or more digits on the Expressway-E

Answer : D

Question 2

A company is installing Cisco Collaboration infrastructure and one of the requirements is that they must be able to communicate with many external parties that are using H.323 and SIP. Internally they want to register the endpoints only on SIP.

Which functionality would describe the feature that needs to be enabled and where to achieve this?

AInterworking in Expressway-C

BTranscoding in Cisco Unified Communications Manager

CTranscoding in Expressway-C

DInterworking in Cisco Unified Communications Manager

Answer : A

Question 3

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

ARTP

BTLS

CSNMP

DICE

Answer : D

Question 4

Which complication does a NAT introduce in SDP for a SIP call?

AAdditional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

BWhen the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.

CThe IP address specified in the connection data field may be an unrouteable internal address.

DThe encryption keys advertised in the SDP are only valid for clients not behind a NAT.

Answer : C

Question 5

Refer to the exhibit.

Refer to the exhibit. When Expressway-E routes a call with URI 4040@uclab.local to a DNS zone, which DNS server does the Expressway query for the SIP SRV records?

A10.20.20.20

B10.10.10.10

C10.40.40.40

D10.30.30.30

Answer : A

Question 6

Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

AEnsure that only requests that are authenticated are allowed to make a PSTN call.

BAvoid using any wild card in the source settings in the search rules.

CAdd registered devices only in the search rule for the PSTN gateway.

DAdd registered devices only in the zone for the PSTN gateway.

Answer : B

Question 7

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

ACisco Expressway-E and endpoints outside the enterprise

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

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

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

Answer : D

Cisco Implementing Cisco Collaboration Cloud and Edge Solutions 300-820 CLHCT Exam Questions