10 free Cisco 350-801 CLCOR practice questions with the correct answer and a full explanation for each, taken from the CertStash pack of 515 questions. Work through them, then open each answer to check your reasoning.
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Question 1
Which two functionalities does Cisco Expressway provide in the Cisco Collaboration architecture? (Choose two.)
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Correct answer: C, E
C. secure business-to-business communications E. secure firewall traversal for remote devices Cisco Expressway provides secure business-to-business communications through its core architecture for connecting disparate collaboration environments, and secure firewall traversal for remote devices through its dual-node design (Expressway-C for internal networks and Expressway-E for DMZ/external). These are the primary use cases for Expressway deployment in hybrid and distributed architectures.
Why the other options are wrong
- A. Survivable Remote Site Telephony (SRST) is a Cisco Unified Communications Manager or gateway feature, not an Expressway functionality.
- B. MGCP gateway registration is handled by Cisco Unified Communications Manager, not Expressway.
- D. Customer interaction management services are provided by platforms like Cisco Contact Center Enterprise, not Expressway.
Question 2
An engineer must extend the corporate phone system to mobile users connecting through the internet with their own devices. One requirement is to keep that as simple as possible for end users.
Which infrastructure element achieves these goals?
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Correct answer: B. Cisco Expressway-C and Expressway-E
Cisco Expressway-C and Expressway-E together provide the infrastructure needed to extend the corporate phone system to mobile users over the internet with minimal client complexity. Expressway-E handles external firewall traversal while Expressway-C manages internal registration and routing, presenting a simple unified access point for remote users with their own devices.
Why the other options are wrong
- A. Cisco Express Mobility is not a standard infrastructure product in the Cisco collaboration portfolio.
- C. Cisco Unified Border Element is a SIP/H.323 border controller but does not simplify mobile user extension in the way Expressway does.
- D. Unified Instant Messaging and Presence handles messaging and presence services, not mobile phone system extension.
Question 3
A customer wants a video conference with five Cisco TelePresence IX5000 Series systems.
Which media resource is necessary in the design to fully utilize the immersive functions?
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Correct answer: D. Cisco Meeting Server
Cisco Meeting Server is the dedicated media resource designed to support immersive telepresence systems like the TelePresence IX5000 Series, providing the necessary bridging, transcoding, and media management capabilities to enable true multi-party immersive video conferencing with full resolution and frame rate support across multiple endpoints.
Why the other options are wrong
- A. PVDM4-128 is a voice/video DSP module for Cisco routers, not designed for enterprise immersive telepresence conferencing.
- B. Software conference bridge on Unified Communications Manager lacks the specialized capabilities and processing power needed for immersive telepresence at the quality level required by IX5000 systems.
- C. Webex Meetings Server is designed for web-based meeting collaboration, not specialized immersive telepresence bridging.
Question 4
An engineer is designing a load balancing solution for two Cisco Unified Border Element routers. The first router (cube1.abׁ.com) takes 60% of the calls and the second router (cube2.abc.com) takes 40% of the calls. Assume all DNS A records have been created.
Which two SRV records are needed for a load balanced solution? (Choose two.)
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Correct answer: C, E
C. _sip._udp.abc.com 60 IN SRV 1 40 5060 cube2.abc.com E. _sip._udp.abc.com 60 IN SRV 1 60 5060 cube1.abc.com In SRV record load balancing, the priority field determines preference (lower value = higher priority, processed first), and the weight field determines distribution among equal- priority records. Option C has priority 1 with weight 40 for cube2, and Option E has priority 1 with weight 60 for cube1, creating equal priority records where cube1 receives 60% of traffic and cube2 receives 40%, matching the requirement.
Why the other options are wrong
- A. This record has priority 2, which means it would only be used if all priority 1 records fail, not for load balancing across both routers.
- B. This record has priority 60, making it very low priority and unsuitable for handling normal traffic load balancing.
- D. This record has priority 3, which is even lower priority than option A and would not participate in normal load balancing.
Question 5
Which two functions are provided by Cisco Expressway Series? (Choose two.)
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Correct answer: A, B
A. interworking of SIP and H.323 B. endpoint registration Cisco Expressway Series provides interworking between SIP and H.323 protocols, allowing heterogeneous communication systems to interconnect, and endpoint registration services to manage devices connecting across different network zones. These are core gateway and registration functions that define Expressway's role in the collaboration architecture.
Why the other options are wrong
- C. Intercluster extension mobility is a Cisco Unified Communications Manager feature, not an Expressway function.
- D. Voice and video transcoding is typically handled by dedicated transcoders or media resources on Unified Communications Manager, not Expressway.
- E. Voice and video conferencing bridge functions are provided by conference servers and Unified Communications Manager, not Expressway.
Question 6
An incoming off-net call to a user fails. An engineer notices that the off-net call is G.711, but the phone accepts only G.729.
Which media resource on a Cisco Unified Border Element and Cisco Unified Communications Manager must the engineer configure to manage the codec negotiation?
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Correct answer: A. transcoder
A transcoder is the media resource responsible for converting between different audio and video codecs. When an incoming call arrives in G.711 but the endpoint only supports G.729, a transcoder must be inserted into the call path to perform real-time codec conversion, enabling the call to complete successfully.
Why the other options are wrong
- B. CFB (Conference Bridge) is used for conference mixing, not codec conversion.
- C. MOH (Music On Hold) provides background audio during call hold, not codec negotiation.
- D. MTP (Media Termination Point) handles supplementary services and some media manipulation but is not the primary resource for codec transcoding.
Question 7
Which Cisco Unified Communications Manager service parameter should be enabled disconnect a multiparty call when the call initiator hangs up?
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Correct answer: A. Drop Ad Hoc Conference
The 'Drop Ad Hoc Conference' service parameter in Cisco Unified Communications Manager controls whether an ad hoc multiparty conference is disconnected when the call initiator (the person who created the conference) hangs up. When enabled, this parameter terminates the entire conference when the initiator disconnects.
Why the other options are wrong
- B. H.225 Block Setup Destination controls H.323 call setup behavior, not conference termination.
- C. Block Off-Net To Off-Net Transfer prevents transfers between external calls, not conference disconnection.
- D. Enterprise Feature Access Code for Conference defines the dial code for conference features, not the behavior when the initiator disconnects.
Question 8
A network administrator deleted a user from the LDAP directory of a company. The end user shows as Inactive LDAP Synchronized User in Cisco Unified Communications Manager.
Which step is next to remove this user from Cisco Unified Communications Manager?
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Correct answer: D. Wait 24 hours for the garbage collector to remove the user.
user. When an account is removed from the LDAP directory, the next Cisco Unified Communications Manager synchronization marks it as an Inactive LDAP Synchronized User rather than deleting it immediately. The built-in garbage collection process runs automatically once every 24 hours and purges those inactive records from the CUCM database. The administrator simply allows that cycle to complete, no further action is required.
Why the other options are wrong
- A. CUCM blocks administrative deletion of accounts owned by LDAP synchronization, so removing the record directly is not the defined cleanup path.
- B. Restarting the Cisco DirSync service only restarts the synchronization agent and has no effect on purging inactive user records.
- C. A manual sync is what flags the account as inactive in the first place, it does not delete the entry from the database.
Question 9
A customer has Cisco Unity Connections that is integrated with LDAP. As a Unity Connection administrator, you have received a request to change the first name for VM user.
Where must the change be performed?
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Correct answer: C. Active Directory
When Cisco Unity Connection is integrated with LDAP, user attributes including first name are mastered in the LDAP directory (typically Active Directory). Changes to LDAP- synchronized user attributes must be made in the LDAP directory itself, not in Unity Connection, as Unity Connection reads these attributes from LDAP during synchronization.
Why the other options are wrong
- A. Unity Connection cannot modify user attributes that are synchronized from LDAP; it only reads them.
- B. Unified Communications Manager end user settings are separate from voicemail user attributes.
- D. Cisco IM and Presence is not involved in voicemail user attribute management.
Question 10
Which configuration step is necessary for a Cisco SIP phone to synchronize its time with a specific source?
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Correct answer: A. Add a Phone NTP Reference to the Date/Time Group.
A Phone NTP Reference must be added to the Date/Time Group in Cisco Unified Communications Manager to configure SIP phones to synchronize their time with a specific NTP source. This setting directs the phone to the correct time server for accurate time synchronization.
Why the other options are wrong
- B. Assigning a device to a region controls bandwidth and codec settings, not NTP synchronization.
- C. Changing the time format from 24-hour to 12-hour only affects display format, not synchronization source.
- D. Changing the time zone setting does not configure NTP synchronization; it only adjusts timezone offset.
That was 10 of 515.
The full Cisco 350-801 CLCOR pack has all 515 questions, each with the answer, the explanation and why the other options are wrong, plus a questions-only copy for timed runs. US$39, paid once, with free monthly updates and a pass-or-your-money-back guarantee.