Cisco® 300-820 Exam (page: 3)
Cisco® Implementing Collaboration Cloud and Edge Solutions
Updated on: 25-Dec-2025

Viewing Page 3 of 31

What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

  1. 1024
  2. 2048
  3. 4096
  4. 8192

Answer(s): C



Refer to the exhibit.



Which two numbers match the regular expression? (Choose two.)

  1. d20d16d20d22
  2. 2091652010224
  3. 209165200225
  4. d209d165d200d224
  5. 209165200224

Answer(s): C,E



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?

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

Answer(s): A



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

  1. It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.
  2. It changes the calling and called number on a call.
  3. It changes the audio protocol used by a call through Expressways.
  4. It changes the audio codec used in a call through Expressways.

Answer(s): A



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?

  1. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
  2. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
  3. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
  4. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

Answer(s): B



Viewing Page 3 of 31



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