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Free Cisco 300-820 CLHCT Practice Questions 2026 Part1

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Question #1
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)
A. The MRA license is missing on the Expressway-E
B. The Unified Communications zone is down
C. Transform is not configured on Expressway-E
D. The SRV record for _cisco-uds is misconfigured
E. The firewall is blocking the port
View answer
Correct Answer: DE

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Question #2
A company already has a Cisco Unified Communications Manager for internal audio and video traffic, but it requires video communication with external partners and customers. It is important to ensure security for the deployment and the connectivity.What must be set up to enable this requirement?
A. isco Unified Border Element and Cisco ASA Firewall
B. isco Unified Border Element and Cisco Firepower Firewall
C. isco Expressway-C and Cisco Expressway-E
D. isco Expressway-C and Cisco Unified Border Element
View answer
Correct Answer: C
Question #3
A company already has a Cisco Unified Communications Manager for internal audio and video traffic, but it requires video communication with external partnersand customers. It is important to ensure security for the deployment and the connectivity.What must be set up to enable this requirement?
A. Cisco Unified Border Element and Cisco ASA Firewall
B. Cisco Unified Border Element and Cisco Firepower Firewall
C. Cisco Expressway-C and Cisco Expressway-E
D. Cisco Expressway-C and Cisco Unified Border Element
View answer
Correct Answer: C
Question #4
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?
A. call routing
B. traversal subzone
C. call policy
D. search rule
View answer
Correct Answer: A
Question #5
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?
A. call routing
B. traversal subzone
C. call policy
D. search rule
View answer
Correct Answer: A
Question #6
Which two considerations must be made when using Expressway media traversal? (Choose two.)
A. It is possible to NAT both Expressway-E interfaces
B. The Unified Communications traversal zone should be used for MRA
C. The Expressway-E must be put in a firewall DMZ segment
D. Expressway Control is the traversal server installed in the DMZ
E. Cisco UCM zone should be either traversal server or client
F. Reveal Answer
View answer
Correct Answer: BC
Question #7
In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?
A. Cisco Expressway-E and endpoints outside the enterprise
B. Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P
C. Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
D. Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise
View answer
Correct Answer: D
Question #8
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verify subject name must be configured on the Expressway - E UC traversal zone?
A. Webex CUSP Cluster Name
B. Expressway - E Cluster Name
C. Cisco Unified Communications Manager Publisher FQDN
D. Expressway - C Cluster Name
View answer
Correct Answer: D
Question #9
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
A. connection
B. name
C. version
D. bandwidth
View answer
Correct Answer: B
Question #10
When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?
A. SDP b-line
B. SIP record route
C. SDP c-line
D. SDP m-line
View answer
Correct Answer: C
Question #11
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)
A. The MRA license is missing on the Expressway-E
B. The Unified Communications zone is down
C. Transform is not configured on Expressway-E
D. The SRV record for _cisco-uds is misconfigured
E. The firewall is blocking the port
View answer
Correct Answer: BE
Question #12
For a Mobile and Remote Access deployment, which server's certificate must include the Unifiedregistration domain as a Subject Alternate Name?
A. xpressway-C server certificate
B. isco Unified Communications Manager server certificate
C. xpressway-E server certificate
D. xpressway-C and Expressway-E server certificate
View answer
Correct Answer: C
Question #13
An external Jabber device cannot register. While troubleshooting this issue, the engineer discovers that privately signed certificates are being used on Expressway-C and Expressway-E What action will resolve this issue?
A. The private CA certificate must be placed in the phone trust store
B. The Jabber client must register to the Cisco UCM internally before it will register externally
C. The device running the Jabber client must use a VPN to register
D. The device running the Jabber client must download and trust the private CA certificate
E. Reveal Answer
View answer
Correct Answer: D
Question #14
When configuring a Cisco Expressway solution and need to design the dial plan with various rules forURIs and numbers coming through the device. To do so, it is important that some dial plan rules areapplied in a certain order. When configuring the transform section, you must know the range of thepriorities.Which range is correct?
A. ny number in the drop-down menu
B. ny number in the dialog box
C. ny number between 1-128
D. ny number between 1-65534
View answer
Correct Answer: D
Question #15
A Cisco Webex Hybrid Video Mesh Node can be installed in the DMZ and on the internal network.Which statement is true?
A. nstalling a Video Mesh Node in the DMZ requires the external firewall to allow UDP traffic from ANY port to the address of the Video Mesh Nodes via port 5004
B. sing internal Video Mesh Node also works due to Mobile and Remote Access setup for Webex Teams clients
C. ebex Cloud supports either a DMZ-based Mesh Node for security or an internal-based Mesh Node for media control only
D. nstalling a Video Mesh Node in the DMZ requires you to open TCP and UDP port 4444 in your internal firewall for full clustering functionality
View answer
Correct Answer: A
Question #16
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #17
An engineer is configuring Cisco Expressway-E and needs to implement toll fraud prevention. Which configuration meets this requirement?
A. AEnable SIP ALG inspection on the network address translation firewall
B. BEnable and configure local call policy
C. CEnable and configure the Expressway-E firewall
D. DConfigure the external firewall to block specific IPs
View answer
Correct Answer: B
Question #18
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #19
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
A. You must have the Intercluster Sync Agent working across your IM and Presence clusters
B. You must have the Intercluster Lookup Service working across all of your IM and Presence clusters
C. Your IM and Presence Service clusters must have Multiple Device Messaging disabled
D. AXL service should be activated only on the publisher of each IM and Presence cluster
View answer
Correct Answer: A
Question #20
Cisco Collaboration endpoints are exchanging encrypted signaling messages.What is one major complication in implementing NAT ALG for voice and video devices?
A. Internal endpoints cannot use addresses from the private address space
B. The NAT ALG cannot inspect the contents of encrypted signaling messages
C. NAT ALG introduces jitter in the voice path
D. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets
View answer
Correct Answer: B
Question #21
Which mode should be used when Call Policy is configured on Expressways?
A. extended CPL
B. local CPL, policy service, and off
C. on
D. remote CPL
View answer
Correct Answer: B
Question #22
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #23
Which statement about the Cisco Webex hybrid service is true?
A. xpressway Connector is required for an on-premises Exchange server
B. ybrid Message service works only with Jabber cloud deployment
C. irectory Connector is required for Azure AD
D. irectory Connector must be deployed for OBTP to work with on-premises video devices
View answer
Correct Answer: A
Question #24
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
E. Reveal Answer
View answer
Correct Answer: D
Question #25
What allows endpoints behind a NAT to discover the paths through which they will pass media?
A. RTP
B. TLS
C. SNMP
D. ICE
View answer
Correct Answer: D
Question #26
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #27
What is the purpose of a transform in the Expressway server?
A. A transform has the function as a neighbor zone in the Expressway
B. A transform changes the audio codec when the call goes through the Expressway
C. A transform is used to route calls to a destination
D. A transform changes an alias that matches certain criteria into another alias
View answer
Correct Answer: D
Question #28
Which mode should be used when Call Policy is configured on Expressways?
A. xtended CPL
B. ocal CPL, policy service, and off
C. n
D. emote CPL
View answer
Correct Answer: B
Question #29
An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server. Which configuration must happen?
A. Configure a traversal zone on each server with a destination of the other Expressway-C
B. Configure a neighbor zone on each server with a destination of the other Expressway-C
C. Configure a transform on each server to strip the port numbers at the end of the alias
D. Configure a transform on each server to convert the calling alias into the called alias
View answer
Correct Answer: B
Question #30
What is a requirement when configuring the Cisco Webex Hybrid Message account for accessing the API of the Cisco UCM IM and Presence Service?
A. Add a new end-user with the ''Standard AXL API Access'' role
B. Use an application user with only the ''Standard CTI Allow Control of All Devices'' role
C. Use an application user not the main administrator account with the ''Standard AXL API Access'' role
D. Use the main administrator account if it includes the ''Standard AXL API Access'' role
E. Reveal Answer
View answer
Correct Answer: C
Question #31
An administrator deployed the directory connector to synchronize the on-premises Active Directory with the Webex cloud and needs to map attributes from the AD to the corresponding attributes in the cloud. To which Webex cloud attribute must the user Account Control attribute be mapped to ensure that users are synced properly?
A. s-pwp-account-disabled
B. ivenName
C. isplayName
D. ipAddresses:type=enterprise
View answer
Correct Answer: A
Question #32
Refer to the exhibit. Refer to the exhibit. When users sign in to Cisco Jabber through Mobile and Remote Access, they cannot see their own photo or the photo of their contacts next to each name. Which action must be taken in Cisco Expressway-C to resolve the issue?
A. AAdd an HTTP allow list for the Instant Message and Presence server
B. BAdd an allow call policy rule from the Cisco UCM traversal zone
C. CUpload the missing Instant Messaging and Presence server certificate to fix the connection to its server
D. DAdd an HTTP allow list for the web server that contains the photos
View answer
Correct Answer: D
Question #33
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
A. Off
B. Best Effort
C. Auto
D. Force Encrypted
View answer
Correct Answer: A
Question #34
Which complication does a NAT introduce in SDP for a SIP call?
A. dditional headers due to NAT encapsulation can cause the packet size to exceed the MTU
B. hen the client is behind a NAT they may be unable to determine the appropriate offset due to time zones
C. he IP address specified in the connection data field may be an unrouteable internal address
D. he encryption keys advertised in the SDP are only valid for clients not behind a NAT
View answer
Correct Answer: C
Question #35
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?
A. call routing
B. traversal subzone
C. call policy
D. search rule
View answer
Correct Answer: A
Question #36
Refer to the exhibit.Which two numbers match the regular expression? (Choose two.)
A. d20d16d20d22
B. 2091652010224
C. 209165200225
D. d209d165d200d224
E. 209165200224
View answer
Correct Answer: CE
Question #37
In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?
A. Cisco Expressway-E and endpoints outside the enterprise
B. Cisco Expressway-C, Cisco Unified Communications Manager, and IMandP
C. Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
D. Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise
View answer
Correct Answer: D
Question #38
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used formeeting capabilities?
A. isco Unified CM is always used for meeting capabilities
B. epending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities
C. epending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities
D. isco Webex Meeting Center is always used for meeting capabilities
View answer
Correct Answer: D
Question #39
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
A. Off
B. Best Effort
C. Auto
D. Force Encrypted
View answer
Correct Answer: A
Question #40
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
A. Off
B. Best Effort
C. Auto
D. Force Encrypted
View answer
Correct Answer: A
Question #41
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
A. ou must have the Intercluster Sync Agent working across your IM and Presence clusters
B. ou must have the Intercluster Lookup Service working across all of your IM and Presence clusters
C. our IM and Presence Service clusters must have Multiple Device Messaging disabled
D. XL service should be activated only on the publisher of each IM and Presence cluster
View answer
Correct Answer: A
Question #42
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
A. connection
B. name
C. version
D. bandwidth
View answer
Correct Answer: B
Question #43
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
A. Off
B. Best Effort
C. Auto
D. Force Encrypted
View answer
Correct Answer: A
Question #44
Refer to the exhibit.While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?
A. down Cisco Unified Communications Manager server
B. XMPP bind failures
C. incorrect login credentials
D. service discovery issues
View answer
Correct Answer: B
Question #45
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
A. connection
B. name
C. version
D. bandwidth
View answer
Correct Answer: B
Question #46
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #47
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
A. connection
B. name
C. version
D. bandwidth
View answer
Correct Answer: B
Question #48
Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?
A. Ensure that only requests that are authenticated are allowed to make a PSTN call
B. Avoid using any wild card in the source settings in the search rules
C. Add registered devices only in the search rule for the PSTN gateway
D. Add registered devices only in the zone for the PSTN gateway
View answer
Correct Answer: B
Question #49
Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?
A. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint
B. Internal endpoints are registered to Expressway-E in the DMZ
C. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint
D. Internal endpoints are registered to Expressway-C in the DMZ
View answer
Correct Answer: A
Question #50
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
A. STUN
B. RTP
C. SNMP
D. TURN
View answer
Correct Answer: A

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