300-820 Certification Exam Dumps Questions in here [Feb-2026]
Updated 300-820 Exam Practice Test Questions
Cisco 300-820 exam is an important certification for professionals who want to enhance their skills and knowledge in implementing Cisco Collaboration Cloud and Edge Solutions. Implementing Cisco Collaboration Cloud and Edge Solutions certification is designed to test the candidate's understanding of Cisco collaboration solutions, and it is a valuable credential for professionals who want to advance their careers in this field.
Cisco 300-820 exam comprises of 60-70 questions, and candidates have 90 minutes to complete the test. 300-820 exam is available in Pearson VUE testing centers worldwide, and candidates can also take the exam online. 300-820 exam tests the candidate’s knowledge of various Cisco Collaboration Cloud and Edge solutions, such as Cisco Webex Teams, Cisco Expressway, and Cisco Unified Communications Manager (CUCM).
NEW QUESTION # 11
An organization with a domain name of example.com.
Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)
- A. _collab-edge._tls.example.com
- B. _h323ls._tcp.example.com
- C. _h323ls._udp.example com
- D. _sips._udp.example.com
- E. _sips._tcp.example.com
Answer: C,E
Explanation:
The format of DNS SRV queries for sip (RFC 3263) and H.323 used by Expressway are:
_sips._tcp.<fully.qualified.domain>
_sip._tcp.<fully.qualified.domain>
_sip._udp.<fully.qualified.domain> - not recommended for video calls, only use for audio-only calls
_h323ls._udp.<fully.qualified.domain> - for UDP location (RAS) signaling, such as LRQ
_h323cs._tcp.<fully.qualified.domain> - for H.323 call signaling
The format of DNS SRV queries for sip (RFC 3263) and H.323 typically used by an endpoint are:
_sips._tcp.<fully.qualified.domain>
_sip._tcp.<fully.qualified.domain>
_sip._udp.<fully.qualified.domain> - not recommended for video calls, only use for audio-only calls
_h323ls._udp.<fully.qualified.domain> - for UDP location (RAS) signaling, such as LRQ
_h323cs._tcp.<fully.qualified.domain> - for H.323 call signaling
_h323rs._udp.<fully.qualified.domain> - for H.323 registrations
NEW QUESTION # 12
An organization wants to be able to call IP addresses and URI addresses. An engineer must configure Cisco Expressways to manage this request from the endpoints in the organization. How would the engineer configure the Expressways to allow these calls to be completed to external IP addresses?
- A. Set calls to unknown IP addresses to indirect on the Cisco Expressways, and add a search rule on the Expressway-E
- B. Set calls to unknown IP addresses to indirect on the Expressway-C and direct on the Expressway-E, and add a search rule on the Expressway-E
- C. Use search rules to manage calls to IP addresses, and the direct/indirect setting on the Expressway is used as a fallback only if the search rules do not exist
- D. Set calls to unknown IP addresses to direct on the Cisco Expressways, and add a search rule on the Expressway-E
Answer: B
NEW QUESTION # 13
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. 1
- C. 2
- D. d20d16d20d22
- E. d209d165d200d224
Answer: B,C
NEW QUESTION # 14
An engineer wants to configure a zone on the Expressway-E to receive communications from the Expressway-C in order to allow inbound and outbound calls. How is the peer address configured on the Expressway-C when Expressway-E has only one NIC enabled and is using static NAT mode?
- A. Cisco UCM FQDN
- B. Expressway-E FQDN
- C. Expressway-E DHCP
- D. Cisco UCM DHCP
Answer: B
NEW QUESTION # 15
Refer to the exhibit. A company has a Cisco collaboration infrastructure that contains Cisco UCM and Cisco Expressway-C and Expressway-E for Mobile and Remote Access. When the engineer sets up the environment to support B2B calling, they discover that the zone stale between Expressway-C and Cisco UCM failed. What must the STEP Trunk Security Profile setting be changed to in Cisco UCM to resolve the issue?
- A. value other than the default listening port for incoming SIP connections on Cisco UCM
- B. value other than the default listening port for outgoing SIP connections on Cisco UCM
- C. UDP for the outgoing transport type
- D. TCP for the incoming transport type
Answer: D
NEW QUESTION # 16 
Refer to the exhibit. Which description of the transformation is true?
- A. It changes all patterns that begin with [email protected]:<port> to [email protected]
- B. It converts [email protected]:<port> to [email protected]
- C. It changes [email protected]:<port> to [email protected]
- D. It converts [email protected]:<port> to [email protected]
Answer: D
NEW QUESTION # 17
Which two licenses are required for the B2B feature to work? (Choose two.)
- A. Traversal Server
- B. Rich Media Sessions
- C. Advanced Networking
- D. Device Provisioning
- E. TURN Relays
Answer: B,D
NEW QUESTION # 18
What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
SIP TLS zones may fail to become active if certificates use a key length of 8192 bits. We recommend using certificates with a key length of 4096 bits.
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-
9/Cisco-Expressway-Certificate-Creation-and-Use-Deployment-Guide-X8-9.pdf
NEW QUESTION # 19
Which connection does the traversal zone configuration define?
- A. Cisco Expressway-C and Cisco Expressway-E platforms
- B. Cisco UCS E-Series and Cisco UCM
- C. Expressway-E and Collaboration Endpoints
- D. Cisco UC and Cisco Unified Presence Server
Answer: A
NEW QUESTION # 20
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
- A. ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
- B. ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
- C. ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
- D. ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
Answer: A
NEW QUESTION # 21
Refer to the exhibit.
Which inbound connection should an administrator configure on the outside firewall?
- A. Media: UDP 36000 to 36011
- B. SIP TCP 5061
- C. XMPP TCP 5222
- D. HTTPS (tunneled over SSH between C and E): TCP 2222
Answer: B
NEW QUESTION # 22
An Expressway Server has both network protocols (IPv4 and IPv6) enabled. Which two behaviors are correct? (Choose two.)
- A. Endpoints register only with IPv6 addresses on an Expressway Server with IPv6 protocol enabled regardless of the state of IPv4 protocol.
- B. If the calling endpoint is on an IPv4-Only network and the called endpoint is on an IPv6-Only network, the Expressway Server act as a gateway and convert the two protocol versions.
- C. Endpoints register with either IPv4 or IPv6 addresses, but dual-stack endpoints choose IPv6 protocol by default.
- D. Endpoints register with either IPv4 or IPv6 addresses, and endpoints decide which protocol to use by the format of the configured Expressway Server IP address.
- E. If the calling endpoint is on an IPv4-Only network and the called endpoint is on an IPV6-Only network, a NAT64 device must convert the IPv4 addresses to IPv6 addresses.
Answer: B,D
NEW QUESTION # 23
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
- A. SNMP
- B. TURN
- C. RTP
- D. STUN
Answer: D
NEW QUESTION # 24
Where is encryption enabled in a Cisco collaboration environment for dedicated hardware-based video endpoint calls?
- A. Set enforce encryption in regions in Cisco UCM.
- B. Ensure that Cisco UCM is set to restricted mode.
- C. Set enforce encryption in Cisco Expressway-C under Dial Plan Configuration.
- D. Set enforce encryption on every single endpoint.
Answer: A
NEW QUESTION # 25
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 m-line
- D. SDP c-line
Answer: B
NEW QUESTION # 26
Refer to the exhibit. A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created.
What should be done to resolve this issue?
- A. More bandwidth must be added to the appropriate pipes
- B. The search rule must be changed to continue on match
- C. The underlying DNS issue must be resolved
- D. The existing zone using ID 7 must be deleted
Answer: C
NEW QUESTION # 27
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. Any
- B. Traversal Zone
- C. Neighbor Zone
- D. All
Answer: A
NEW QUESTION # 28
Refer to the exhibit.
An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?
- A. Add a server certificate to the Expressway-C that is signed by a certificate authority.
- B. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
- C. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- D. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
Answer: C
NEW QUESTION # 29
Refer to the exhibit.
Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.
Which action corrects this problem?
- A. Ensure that the peer address does not match the Common Name on certificate.
- B. Ensure that the SIP domains are added on Expressway Core.
- C. Ensure that the _cisco-uds SRV record has been configured.
- D. Ensure that the credential has been entered correctly.
Answer: D
NEW QUESTION # 30
Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?
- A. No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.
- B. Mobile and remote access login has not been enabled for the domain configured in the Expressway-C. The domain must be edited to allow Cisco UCM registrations.
- C. Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.
- D. SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.
Answer: C
Explanation:
If you look at the bottom of the diagram, it shows a CUCM server configured and also states at the very bottom that the UC traversal zone is not configured.
NEW QUESTION # 31
Refer to the exhibit.
The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1. Which configuration changes are needed for an Expressway-E with dual network interfaces?
A)
B)
C)
D)
- A. Option A
- B. Option D
- C. Option C
- D. Option B
Answer: B
NEW QUESTION # 32
Which technique can be used to have media flow directly between two endpoints that have a NAT between them?
- A. Cisco access protocol can make a direct path between endpoints on an internal network.
- B. STUN makes UDP connections through NAT devices.
- C. Cisco Mobile and Remote Access allows for media traffic directly between two internal endpoints.
- D. The endpoints can use a Cisco router API to disable NAT temporarily.
Answer: B
NEW QUESTION # 33
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
- A. name
- B. connection
- C. version
- D. bandwidth
Answer: A
NEW QUESTION # 34
An administrator configures a secure SIP trunk in Cisco UCM to Expressway-C. The SIP trunk fails to become active, and an examination of a packet capture finds that the TLS handshake failed with a "Certificate Unknown" error from Cisco UCM. To allow the Cisco UCM to trust the Expressway-C and establish a TLS connection, the administrator will upload the Expressway server certificate to the trust store. To which trust store must the certificate be uploaded?
- A. tomcat-trust
- B. CallManager-trust
- C. ipsec-trust
- D. TVS-trust
Answer: B
NEW QUESTION # 35
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. Any
- B. Traversal Zone
- C. Neighbor Zone
- D. All
Answer: A
NEW QUESTION # 36
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Cisco 300-820 certification exam is designed to test the proficiency of IT professionals in implementing Cisco Collaboration Cloud and Edge Solutions. It is a highly sought-after certification that validates the skills required for designing, deploying, and configuring cloud solutions and edge devices for a collaborative work environment. Implementing Cisco Collaboration Cloud and Edge Solutions certification exam evaluates your understanding of collaboration endpoints, interoperation with on-premises and cloud infrastructure, and call control.
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