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Implementing Cisco Collaboration Hybrid and Cloud Technologies Questions and Answers

Question 1

Refer to the exhibit.

When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "user@example.com" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV records used by Jabber.

DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com" points to the Cisco Unified Communications Manager.

Which change resolves the DNS problem?

Options:

Change cisco-uds to point to the Expressway-E FQDN.

Change the collab-edge record to point to 5061.

Remove the cisco-uds SRV record for the external DNS.

Change the priority of the SRV record for cisco-uds.

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Question 2

What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

Options:

The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.

Encrypted IP traffic for collaboration devices always is trusted by the firewall.

The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.

The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

Question 3

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

Options:

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

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

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

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

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

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300-820 Exam Dumps : Implementing Cisco Collaboration Hybrid and Cloud Technologies

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Implementing Cisco Collaboration Hybrid and Cloud Technologies Questions and Answers

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