Cisco CCIE Collaboration lab exam Exam Practice Test
The CCIE Collaboration lab exam practice page covers collaboration call control, SIP signaling, media negotiation, and voice gateway operations. The available questions touch on Unified CM trunk behavior, endpoint registration and failover, media resources, call routing, and WAN bandwidth controls. These subjects connect signaling and configuration choices to the audio, video, and availability users experience during calls.
Exam overview
About the Cisco CCIE Collaboration lab exam Exam
Collaboration engineers must trace a call across endpoints, Unified CM, trunks, gateways, and media resources to locate where signaling or media handling differs from expectations. That work includes interpreting SIP exchanges and SDP offers, checking calling-party information, and distinguishing call establishment from successful two-way media. Unified CM decisions also involve device access to trunks, media resource selection, location-based bandwidth limits, and encrypted signaling or media for supported devices. Troubleshooting requires correlating configuration with operational evidence, such as voice-port status and call activity, while considering direct media paths and node failover behavior. The practice bank samples these kinds of technical judgments; its questions are not a complete statement of lab requirements or topic coverage.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
An engineer is troubleshooting a SIP trunk where calls connect but the called party hears no audio. Which feature can allow media to flow directly between endpoints rather than through Unified CM, when the endpoints and network support it?
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Correct answer: CMedia resource passthrough allows media to flow between endpoints without being anchored through Unified CM in supported call scenarios. A required MTP instead introduces a media termination point, while Early Offer and OPTIONS ping address signaling behavior or peer reachability, not direct media routing.
A Cisco IOS voice gateway has several configured voice interfaces. Which command is most useful for checking the operational state of voice ports and their associated call activity?
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Correct answer: AThe voice-port summary display provides a concise view of voice-port status and related operational information, helping identify issues with gateway voice interfaces. The other commands inspect routing, switching trunks, or cryptographic keys.
Which Cisco Unified CM feature is intended to provide encryption for signaling and media between supported phones and Unified CM?
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Correct answer: AFor supported endpoints and deployments, secure communications can use TLS to protect signaling and SRTP to protect media. Call pickup, extension mobility, and translation patterns do not provide transport encryption.
What is the primary function of a media resource group list in Unified CM?
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Correct answer: AA media resource group list provides an ordered selection of media resource groups, helping determine which resources are available to a device or call. Route patterns, database replication, and directory-number assignment are separate functions.
A Cisco Unified CM phone registered to one node remains registered after that node becomes unavailable. Which cluster mechanism can provide call processing from another node when the phone has been configured with an appropriate failover list?
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Correct answer: DA Unified CM group defines an ordered list of call-processing servers for devices in a device pool. If the active server becomes unavailable, a phone can attempt to register with another listed server. SRST is a different mechanism for survivability at a gateway during loss of central call control.
An administrator needs to restrict which Unified CM-registered devices can use a particular SIP trunk. Which configuration is most directly used to control the devices permitted to access that trunk?
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Correct answer: AA SIP trunk security profile defines security-related settings and can specify which device security mode and authentication characteristics apply to a SIP trunk. The other choices address phone layout, codec-related settings, or call park resources.
During a video call, endpoints negotiate media capabilities before exchanging media. Which SIP message commonly carries an SDP offer describing proposed codecs and media addresses?
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Correct answer: AA SIP INVITE commonly carries an SDP offer with proposed media types, codecs, and transport addresses. BYE terminates an established session, CANCEL abandons a pending request, and ACK confirms a final response to an INVITE.
How to use this practice test
Access is free. A session presents up to 20 random questions from the available 50-question bank, with results shown after the session. Use the questions to check how well you recognize SIP and Unified CM behaviors, then revisit any configuration or call-flow concept that you answered incorrectly.
Preparation tips
- Trace an INVITE through its provisional and final responses, SDP offer and answer, and ACK; identify which exchanges establish signaling and which describe media.
- For one-way or missing audio scenarios, compare negotiated media addresses and ports with the expected RTP path, including whether supported endpoints can send media directly.
- Practice locating Unified CM settings for trunk device access, calling-party number presentation, media resource group lists, and location-based bandwidth limits.
- Review phone registration failover behavior and verify voice gateway port state and call activity using relevant IOS operational commands.
- Compare the purpose of signaling and media encryption with the devices and call paths that must support each protection mechanism.