Primary Expressway Configurations – 25%
This subject area measures the following skills of the candidates:
- Troubleshooting a Business to Business collaboration solution.
- Configuring the Expressway Core dial plan components (including transforms; zones; search rules; pipes & links; regular expressions);
- Configuring the core Expressway settings (including DNS; certificates; clustering; network firewall rules; QoS; network interfaces);
- Configuring a Business to Business collaboration solution (including neighbor zones; traversal zones; search rules; transforms; certificates; DNS records; SIP trunk integration with Cisco Unified Communications Manager);
- Configuring toll fraud avoiding within the Expressway series (without custom CPL scripts);
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Cisco 300-820 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Collaboration Cloud Architecture | - Webex platform integration overview - Cisco Collaboration cloud and hybrid architecture concepts |
| Topic 2: Hybrid Collaboration Services | - Calendar, directory, and media services integration - Webex hybrid calling deployment |
| Topic 3: Security and Troubleshooting | - TLS/SRTP and secure signaling - Troubleshooting hybrid collaboration deployments |
| Topic 4: Cisco Expressway and Edge Services | - Expressway-C and Expressway-E deployment - Mobile and Remote Access (MRA) |
| Topic 5: Call Control and SIP Integration | - SIP trunking and call routing design - Cisco Unified Communications Manager (CUCM) integration |
Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions:
An organization uses Control Hub to manage Webex services. A newly promoted IT staff member is given:
- User Management Admin role
- Device Management Admin role
- Organization-wide scope (not location-limited)
They are asked to onboard new users with Webex Messaging, Webex Meetings, and Webex Calling Professional licenses. However, when they open a new user's profile, only Messaging and Meetings licenses are assignable; the Calling license section is not visible at all. Which configuration issue is the cause?
- A. The admin has global scope, but Webex Calling license assignment requires the Calling Admin role, which was not granted.
- B. Calling license assignment requires the admin to also have the Device Administrator role, which controls PSTN and user provisioning.
- C. The organization's Calling Professional licenses are fully consumed, so Control Hub automatically hides the Calling section from delegated admins.
- D. Webex Calling licenses were never enabled at the Organization level, so only top-level admins can view them.
Correct Answer: A 🗳️
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Which two protocols are supported on Expressway Zones? (Choose two.)
- A. H.323
- B. H.248
- C. MGCP
- D. SIP
- E. SCCP
Correct Answer: A,D 🗳️
Which Webex security measure prevents users of an organization from being created in another organization?
- A. domain claim
- B. domain add
- C. domain release
- D. domain verification
Correct Answer: A 🗳️
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An organization is moving from on-premises Active Directory to Azure Active Directory. The Webex Control Hub administrator must configure directory synchronization so that user accounts in Azure AD are synchronized automatically into Webex. Which action must the administrator take in Webex Control Hub so that user attributes such as display name and UPN map correctly to Webex accounts?
- A. Export all Azure AD users into CSV and bulk import them into Control Hub periodically.
- B. Deploy Cisco Directory Connector on a Windows server and connect to Azure AD using LDAPS.
- C. Configure Azure AD SCIM provisioning directly to Webex Control Hub.
- D. Enable SSO with Azure AD because this automatically synchronizes users to Webex.
Correct Answer: C 🗳️
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A video device registered with Cisco UCM failed to make an outbound B2B call. From Expressway-C diagnostic logs, an engineer found that the destination pattern is
"[email protected]:5061", and the call was dropped with a 404 response code from Expressway-C. The search rule intended for this call-in Expressway-C is configured for Alias Pattern Match, Pattern type "Suffix," and Pattern "example.com". How must the configuration be changed to allow the call?
- A. Update the call policy list in Expressway-C to allow calls to "example.com".
- B. Update the route pattern in Cisco UCM to send calls to "example.com" to the correct port.
- C. Create a transform on Expressway-C to strip port numbers.
- D. Create a call policy rule on Expressway-E to allow calls to port 5061.
Correct Answer: C 🗳️
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