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

Which statement about scheduling Expressway backups is true?

• It is not supported on the application.
• It is allowed from the application CLI of the Expressway only.
• It is allowed from the application CLI and GUI of the Expressway.
• It is allowed from the application GUI of the Expressway only.

An organization with a domain name of example.com.Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

• _sips._tcp.example.com
• _sips._udp.example.com
• _h323ls._udp.example com
• _h323ls._tcp.example.com
• _collab-edge._tls.example.com

When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?

• SDP b-line
• SIP record route
• SDP c-line
• SDP m-line

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

• The MRA license is missing on the Expressway-E.
• The Unified Communications zone is down.
• Transform is not configured on Expressway-E.
• The SRV record for _cisco-uds is misconfigured.
• The firewall is blocking the port.

Which step is taken when configuring a Cisco Expressway solution?

• Configure the Expressway-E by using a non-traversal server zone.
• Enable static NAT on the Expressway-E only.
• Disable H.323 mode on the Expressway-E.
• Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.

What is the purpose of a transform in the Expressway server?

• A transform has the function as a neighbor zone in the Expressway. It creates a connection with another server.
• A transform changes the audio codec when the call goes through the Expressway.
• A transform is used to route calls to a destination.
• A transform changes an alias that matches certain criteria into another alias.

A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.For which reason would you see activity on the TURN server when a call is established between two external endpoints?

• The video call is using encryption, which is not supported by ICE with CUCM 12.5
• ICE cannot reduce the packet loss on the link
• A STUN cannot punch holes in the firewall
• The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5

An engineer is deploying an Expressway solution for the SIP domain Cisco.com. Which SRV record should be configured in the public DNS to support inbound B2B calls?

• _collab-edge._tls.cisco.com
• _cisco-uds._tcp.cisco.com
• _sip._tcp.cisco.com
• _cuplogin._tcp.cisco.com

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

• Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
• When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
• The IP address specified in the connection data field may be an unrouteable internal address.
• The encryption keys advertised in the SDP are only valid for clients not behind a NAT.

What should an engineer use to create users for a Cisco Jabber Cloud Deployment?

• Cisco Webex Administration Tool
• Cisco UCM
• Cisco Webex Directory Connector
• Cisco Unified IM and Presence Server