Cisco 300-820 Online Practice Questions and Exam Preparation

Cisco 300-820 Online Questions & Answers

• Question 41:

  When configuring a Cisco Expressway solution and need to design the dial plan with various rules for URIs and numbers coming through the device. To do so, it is important that some dial plan rules are applied in a certain order. When configuring the transform section, you must know the range of the priorities.

  Which range is correct?

  A. any number in the drop-down menu
  B. any number in the dialog box
  C. any number between 1-128
  D. any number between 1-65534
  D. any number between 1-65534

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  Explanation Explanation/Reference:https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X8-6.pdf

• Question 42:

  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.
  D. Change the interworking mode to On.

• Question 43:

  A company has a single Expressway-E that exhibits high resource utilization. An engineer checks the logs and finds numerous fraudulent attempts from sip:[email protected]. Where must the engineer go to configure a call policy rule and block the desired URI?

  A. Call History Configuration > Call Policy > Rules
  B. Configuration > Call History > Policy > Rules
  C. Configuration > Call Policy > Rules
  D. Configuration > Policy > Inbound > Rules
  C. Configuration > Call Policy > Rules

• Question 44:

  What is the last step for domain management in Cisco Webex Control Hub if an engineer adds users already signed in with the company domain?

  A. Publish a domain.
  B. Add a domain.
  C. Verify a domain.
  D. Claim a domain.
  D. Claim a domain.

• Question 45:

  Which set of actions configures ACME certificates on Expressways?

  A. Configure ACME Certificate settings on your Expressway-E, and change the ACME automated scheduler field to ON.
  B. Configure ACME Certificate settings on your Expressway-C, and change the ACME automated scheduler field to OFF.
  C. Configure ACME Certificate settings on your Expressway-C, and change the ACME automated scheduler field to ON.
  D. Configure ACME Certificate settings on your Expressway-E, disable the Expressway cluster, and change the ACME automated scheduler field to OFF.
  A. Configure ACME Certificate settings on your Expressway-E, and change the ACME automated scheduler field to ON.

• Question 46:

  Refer to the exhibit.

  

  The neighbor zone to Cisco UCM fails to come up when TLS verify mode is enabled on the Expressway-C for B2B traffic.

  Which Issue correctly describes the cause of the error?

  A. The certificate has a key length of 8192 bits.
  B. TLS verify mode is enabled on the neighbor zone.
  C. Subject Alternative Name fields are longer than 999 characters.
  D. The neighbor system FQDN is missing from Subject Alternative Name attributes of the certificate.
  D. The neighbor system FQDN is missing from Subject Alternative Name attributes of the certificate.

• Question 47:

  Refer to the exhibit.

  

  Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of "[email protected]" is also registered.

  How is this issue resolved?

  A. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
  B. The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.
  C. The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of "Standards-Based".
  D. Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the pod1.local domain as that is owned by the local system. Calls to any other domain would work.
  A. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.

• Question 48:

  An Expressway Server has both network protocols (IPv4 and IPv6) enabled. Which two behaviors are correct? (Choose two.)

  A. If the calling endpoint is on an IPv4-Only network and the called endpoint is on an IPV6- Only network, a NAT64 device must convert the IPv4 addresses to IPv6 addresses.
  B. Endpoints register with either IPv4 or IPv6 addresses, but dual-stack endpoints choose IPv6 protocol by default.
  C. If the calling endpoint is on an IPv4-Only network and the called endpoint is on an IPv6- Only network, the Expressway Server act as a gateway and convert the two protocol versions.
  D. Endpoints register only with IPv6 addresses on an Expressway Server with IPv6 protocol enabled regardless of the state of IPv4 protocol.
  E. Endpoints register with either IPv4 or IPv6 addresses, and endpoints decide which protocol to use by the format of the configured Expressway Server IP address.
  C. If the calling endpoint is on an IPv4-Only network and the called endpoint is on an IPv6- Only network, the Expressway Server act as a gateway and convert the two protocol versions.
  E. Endpoints register with either IPv4 or IPv6 addresses, and endpoints decide which protocol to use by the format of the configured Expressway Server IP address.

• Question 49:

  Which role does Call Policy play when preventing toll fraud on Expressways?

  A. It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.
  B. It changes the calling and called number on a call.
  C. It changes the audio protocol used by a call through Expressways.
  D. It changes the audio codec used in a call through Expressways.
  A. It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.

• Question 50:

  Which two licenses are required for the B2B feature to work? (Choose two.)

  A. Traversal Server
  B. TURN Relays
  C. Rich Media Sessions
  D. Advanced Networking
  E. Device Provisioning
  A. Traversal Server
  C. Rich Media Sessions