Online Access Free Cisco.300-820.v2026-08-25.q130 Practice Test (Page 22)

300-820 Exam Question 101

A company identifies a fraudulent toil situation. An engineer reviews the Cisco UCM call detail records and discovers that fraudulent calls originate from a Cisco Expressway-C server and are then routed to a 10-digit PSTN number. What must be configured to limit incoming Expressway calls to the internal Cisco UCM range of extensions 5XXXX?

A.calling search space that contains all the partitions on the Unified Communications Manager SIP trunk to Expressway

B.call policy rule from the DNS zone to allow a destination regex pattern of \d.*@abc.com

C.unique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone

D.call policy rule from the DNS zone to allow a destination regex pattern of .*@abc.com

300-820 Exam Question 102

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

A.1024

B.2048

C.4096

D.8192

300-820 Exam Question 103

Refer to the exhibit. The web server is set up to store contact photos and the Cisco Jabber- config.xml file is updated for all clients. After these changes, Jabber for Windows users cannot view the contact photos when they are connected via Mobile and Remote Access. Which action resolves the issue?

A.Update the contact photos to "png".

B.Update the "PhotoUriWithToken' entry to "Https".

C.Add the web-server address within the HTTP server allow list on the Expressway-E.

D.Add the web-server address within the HTTP server allow list on the Expressway-C.

300-820 Exam Question 104

When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?

A.TCP 443 and 444

B.TCP 443 and 8443

C.UDP 5004 and 5005

D.UDP 33432 through 33433

300-820 Exam Question 105

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

A.Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.

B.When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.

C.The IP address specified in the connection data field may be an unrouteable internal address.

D.The encryption keys advertised in the SDP are only valid for clients not behind a NAT.

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300-820 Exam Question 101

300-820 Exam Question 102

300-820 Exam Question 103

300-820 Exam Question 104

300-820 Exam Question 105

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