Cisco Implementing Cisco Collaboration Core Technologies (CLCOR) (350-801)

✅

Reasoning: Cisco Expressway facilitates secure inter-company collaboration, enabling business-to-business (B2B) SIP/H.323 video and voice calls. It acts as a secure traversal point for federated communications between different organizations, ensuring encrypted and authenticated media and signaling.

Reasoning: Cisco Expressway-E enables secure remote access for mobile users and Jabber clients through Mobile Remote Access (MRA). It provides secure firewall traversal, allowing devices outside the corporate network to securely register and access internal Cisco Unified CM services. ❌ Why the other choices are incorrect:

• Option A is incorrect: Survivable Remote Site Telephony (SRST) functionality is provided by Cisco IOS Gateways or Cisco Unified SRST Manager, not Cisco Expressway.
• Option B is incorrect: MGCP gateways register with Cisco Unified Communications Manager, not Cisco Expressway. Expressway primarily handles SIP registrations for remote users.
• Option D is incorrect: Customer interaction management services are typically provided by Cisco Contact Center solutions (UCCX/UCCE), not Cisco Expressway.

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Reasoning: Cisco Expressway-C and Expressway-E provide secure firewall traversal for mobile and remote access. This pair enables external users (BYOD) to connect to internal collaboration services (VoIP, video, IM&P) over the internet without requiring a VPN, simplifying the user experience and extending the corporate phone system. ❌ Why the other choices are incorrect:

• Option A is incorrect: Cisco Express Mobility enables on-campus device mobility and hot-desking, not secure external internet access for mobile users with their own devices.
• Option C is incorrect: Cisco Unified Border Element (CUBE) is primarily used for SIP trunking and connecting to service provider networks, mediating calls between CUCM and the PSTN or other IP-based PBXs, not for direct end-user remote access.
• Option D is incorrect: Cisco Unified Instant Messaging and Presence (CUCM IM&P) provides internal IM and presence services. While part of the overall solution, it is not the infrastructure element that extends these services securely to external mobile users over the internet.

✅ **Cisco Meeting Server **

Reasoning: Cisco Meeting Server (CMS) is a highly scalable conferencing platform designed to fully support high-end immersive telepresence endpoints like the IX5000 series. It handles multiple screens, high-resolution video, and advanced layouts, crucial for utilizing all immersive functions across several IX5000 systems in a single conference. ❌ Why the other choices are incorrect:

• Option A is incorrect: Cisco PVDM4s provide DSP resources primarily for basic voice/video transcoding and smaller, less demanding conference bridges on ISRs. They lack the scale and features to support multiple immersive IX5000 systems.
• Option B is incorrect: A software conference bridge on Cisco Unified Communications Manager is limited in video capabilities, primarily suited for basic audio and low-resolution video. It cannot fully utilize the high-end immersive features of IX5000 endpoints.
• Option C is incorrect: Cisco Webex Meetings Server was an on-premises solution for general video meetings. While capable, it wasn't specifically optimized to fully leverage the unique multi-stream, multi-screen immersive experience of high-end TelePresence endpoints as effectively as CMS.

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Reasoning: This SRV record for cube2.abc.com has a priority of 1 and a weight of 40. When combined with an SRV record of the same priority for cube1.abc.com with a weight of 60, it correctly allocates 40% of calls to cube2.abc.com.

Reasoning: This SRV record for cube1.abc.com has a priority of 1 and a weight of 60. Paired with Option C (same priority and weight 40), the total weight is 100. This configuration correctly assigns 60% of the calls to cube1.abc.com (60/100). ❌ Why the other choices are incorrect:

• Option A is incorrect: This record has priority 2. For load balancing with specific percentages, all participating records must have the same (lowest) priority. This record would only be used if all priority 1 records failed.
• Option B is incorrect: The priority and weight fields appear swapped or incorrectly formatted for standard SRV record interpretation. It does not fit the required load balancing scheme.
• Option D is incorrect: This record has priority 3. Similar to Option A, it would not participate in the intended 60/40 load distribution because higher priority (lower value) records exist.

✅ **interworking of SIP and **

Reasoning: Cisco Expressway offers critical protocol interworking, enabling communication between diverse signaling protocols, notably SIP and H.323. This functionality is essential for Business-to-Business (B2B) collaboration and integrating with various communication platforms beyond the enterprise network.

Reasoning: Expressway facilitates secure endpoint registration via Mobile and Remote Access (MRA). This allows endpoints situated outside the corporate firewall to securely register with Cisco Unified Communications Manager (CUCM), granting remote users access to enterprise collaboration services. ❌ Why the other choices are incorrect:

• Option C is incorrect: Intercluster Extension Mobility is a feature managed directly by Cisco Unified Communications Manager, not a core function provided by Cisco Expressway.
• Option D is incorrect: Voice and video transcoding is typically handled by dedicated media resources such as transcoding gateways, Cisco Meeting Server, or CUCM media resources, not by Cisco Expressway itself.
• Option E is incorrect: Voice and video conferencing services are provided by platforms like Cisco Meeting Server or Webex Meetings, with Expressway acting as a secure traversal or routing component, not the conferencing host.