Cisco 300-820 CLHCT Exam Questions Instant Access

Question 1

An engineer must fix broken SSH tunnels between Expressway-C (192.168.10.5) and Expressway-E (192.168.20.5). The engineer is advised that the packet capture shows the required packets for the SSH tunnels leaving the Expressway-C but not reaching the Expressway-E. Which firewall configuration must the engineer allow to resolve this issue?

Aport 2222 from Expressway-E to Expressway-C

Bport 7001 from Expressway-C to Expressway-E

Cport 7001 from Expressway-E to Expressway-C

Dport 2222 from Expressway-C to Expressway-E

Answer : D

Question 2

Refer to the exhibit.

Refer to the exhibit. An administrator set up a B2B interop with a business partner running a Microsoft Lync environment and can successfully make outbound video calls to Jane.doe@ciscovideo.com. Inbound calls to paul.smith@ciscovoice.com, however, are failing. A quick SRV search returns the records in the exhibit. Which record must be modified to resolve this challenge?

A_h323ls._udp.ciscovoice.com

B_sipfederationtcp._tcp.ciscovoice.com

C_sips._tcp.ciscovoice.com

D_collab-edge._tls.ciscovoice.com

Answer : B

Question 3

A company decided to gradually move to the Cisco Webex Cloud from a Cisco on-premises solution. One step is to configure a Cisco Hybrid Services connector. Where must an engineer make this configuration?

ADeploy the Cisco Hybrid Services connector, which is an on-premises node, to allow for multiple Cisco collaboration environments to connect to Cisco Webex.

BConfigure Hybrid Service in the Cisco Expressway-E in the DMZ to connect to the Cisco Webex Cloud.

CConfigure Hybrid Services in Cisco Webex Control Hub in the Cisco Webex Cloud to enable Hybrid Services.

DEnable the Hybrid Services service on the Cisco UCM to allow the on-premises call control to establish a hybrid link to the Cisco Webex Cloud.

Answer : C

Question 4

Which two internal SIP endpoints behind a firewall place calls to external devices? (Choose two.)

AAn Expressway-C communicates with the internal endpoint and forwards the media to and from an Expressway-E.

BA Cisco Endpoint is configured with a publicly routable static NAT SIP address to advertise instead of is private IP address.

CAn Expressway-C communicates directly with the remote party using the ICE protocol

DAn Expressway-E is used as a VPN server to allow remote SIP edge servers to connect calls

EAn Expressway-C rewrites the SIP SDP to advertise its own IP address to the external party.

Answer : A, B

Question 5

An engineer must review a new traversal zone that is not establishing a successful connection between Expressway-C and Expressway-E. When the event log page on the Expressway-E is reviewed, an authentication failure is found with the detail ''user not found''. Which two actions must the engineer take to resolve the issue? (Choose two.)

ADisable TLS verification on the Expressway-E.

BEnsure that the authentication credentials configured on both zones to match.

CEnsure that LDAP is properly configured and synchronized on the Expressway-E.

DEnsure that the authentication credentials exist on the Expressway-E local database.

EEnsure that the authentication credentials exist on the Expressway-C local database.

Answer : B, D

Question 6

Refer to the exhibit.

Refer to the exhibit. A Cisco Webex device on an enterprise network has identified the given STUN round-trip delays in milliseconds to the enterprise Video Mesh clusters and two Webex Cloud Media clusters during the call setup. Which correct sequence of clusters is the client connecting to?

AUS West Coast WCMC. If US West Cost WCMC is full, then Europe WCMC because clients select clusters in the order of SRT delays.

BDC Europe. If DC Europe is full, DC APAC because clients select on-premises clusters in the order of SRT delays before using cloud resources.

CDC Europe. If DC Europe is full, US West Coast WCMC because clients select resources in the order of SRT delays but ignore SRTs greater than 250 ms.

DUS West Coast WCMC. Clients continuously monitor DC US cluster and reconnect when DC US are available to save bandwidth.

Answer : C

Question 7

How do the Cisco Expressway-C and Expressway-E servers transmit media to each other?

ARTP and RTCP are multiplexed for all internal and external video endpoints across the traversal link using UDP.

BWhen the Expressway-C receives RTP and RTCP media, it establishes a new UDP socket with the Expressway-E.

CRTP and RTCP are multiplexed for all internal and external video endpoints across the traversal link using TLS.

DWhen the Expressway-E receives RTP and RTCP media, it establishes a new UDP socket with the Expressway-C.

Answer : B

Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies 300-820 CLHCT Exam Questions