CLCOR Practice Test 6 — 10 Questions

Question 1

A collaboration administrator is configuring a new site in Cisco Unified Communications Manager. The site has a 2 Mbps WAN link, and the administrator wants to prevent more concurrent G.711 calls than the link can support by defining the maximum audio bandwidth allowed. Which configuration element in Cisco Unified Communications Manager should the administrator configure?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Location. Locations in Cisco Unified Communications Manager are the call admission control mechanism for hub-and-spoke WAN designs, tracking aggregate audio and video bandwidth per site. Assigning devices to a Location with a defined maximum audio bandwidth causes CUCM to deny calls that would exceed the limit, which is precisely what the administrator needs to protect a 2 Mbps link from oversubscription.

Answer

SIP Profile

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Device Pool

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Region

Question 2

Which tool can be used to perform a bulk import of users and devices into CUCM?

Accepted Answer

Bulk Administration Tool (BAT). The Bulk Administration Tool (BAT) is specifically designed for bulk operations in Cisco Unified Communications Manager (CUCM), including importing users and devices. It allows administrators to add, update, or delete large numbers of records using CSV files, and it validates the data before insertion. BAT is the only tool among the options that provides this bulk import capability natively within CUCM.

Answer

Cisco Unified Reporting

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Dialed Number Analyzer

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Cisco Prime Collaboration

Question 3

A Cisco IOS XE voice gateway is configured with two POTS dial peers pointing to the same FXO port. Dial peer 10 matches destination pattern 911, and dial peer 20 matches destination pattern 9T. An inbound PSTN call arrives and is matched to a VoIP dial peer that forwards it to the gateway's FXO trunk. Which dial peer will the gateway use for the outbound POTS leg, and why?

Accepted Answer

Dial peer 10, because the most specific match (longest explicit digit string) is selected before the wildcard pattern.. Dial-peer matching on Cisco IOS voice gateways uses a specificity comparison: an exact digit string outranks a pattern containing wildcards. Because 911 is fully explicit and 9T contains the T wildcard, the gateway selects the peer with destination pattern 911 for the outbound POTS leg. This behavior lets engineers attach distinct settings, such as different trunk groups or calling-party transformations, to emergency calls while still allowing all other dialed numbers to use the general pattern.

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Neither dial peer is selected; the gateway rejects the call because two POTS peers cannot share the same voice port.

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Dial peer 20, because the gateway selects the peer with the lowest preference value configured under the dial peer.

Answer

Dial peer 20, because wildcard patterns always take precedence over literal patterns to allow flexible routing.

Question 4

You are designing a Cisco Collaboration deployment for a hospital where 911 calls must always be routed to the nearest Public Safety Answering Point (PSAP) based on the physical location of the calling device. The hospital has multiple buildings across a campus, and wireless IP phones (Cisco 8821) are used by nurses who roam between buildings. Which CUCM feature should you implement to ensure that emergency calls are routed with the correct location information?

Accepted Answer

Cisco Emergency Responder (CER) integrated with CUCM. Cisco Emergency Responder is the dedicated solution for E911 location tracking in Cisco Collaboration. It integrates with CUCM and network infrastructure to map devices to emergency response locations. Device Mobility, SRST, and ELCAC serve different purposes and do not provide the required location granularity for emergency calls.

Answer

Enhanced Location Call Admission Control (ELCAC) in CUCM

Answer

Cisco Unified Survivable Remote Site Telephony (SRST)

Answer

Device Mobility in Cisco Unified Communications Manager

Question 5

A Cisco Unified Border Element (CUBE) is deployed between Cisco Unified Communications Manager (CUCM) and a SIP service provider. The provider sends an INVITE with a Diversion header containing a redirecting number. The CUBE must pass the redirecting number to CUCM in the History-Info header instead of the Diversion header. Which SIP profile configuration on CUBE accomplishes this?

Accepted Answer

request INVITE sip-header Diversion copy-to History-Info. To convert a Diversion header to History-Info on CUBE, a SIP profile is used with the command request INVITE sip-header Diversion copy-to History-Info. This copies the value from the incoming Diversion header into a new History-Info header in the outbound INVITE. This ensures CUCM receives the redirecting number in the header it expects, facilitating proper call routing and display.

Answer

request INVITE sip-header Diversion

Answer

response INVITE sip-header Diversion copy-to History-Info

Answer

request INVITE sip-header History-Info copy-to Diversion

Question 6

You need to ensure that the Webex Hybrid Calendar service can access an Exchange 2019 environment. Which authentication method is recommended by Cisco for this deployment?

Accepted Answer

OAuth 2.0. Cisco recommends OAuth 2.0 for Hybrid Calendar with Exchange 2019 because Microsoft has deprecated Basic Authentication for EWS and modern security baselines require token-based auth. OAuth 2.0 allows the Calendar Connector to authenticate via Microsoft Entra ID app registration without storing user credentials. This is the supported and future-proof method for Exchange 2019 deployments.

Answer

Digest Authentication

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Basic Authentication

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Kerberos Constrained Delegation

Question 7

A collaboration engineer is designing a SIP trunk between Cisco Unified Communications Manager (CUCM) and Cisco Unified Border Element (CUBE). The engineer must ensure that calls are routed correctly and that CUCM can send calls to CUBE. Which element should be configured on CUCM to point to CUBE as the next hop for calls destined to the ITSP?

Accepted Answer

SIP trunk configured on CUCM with destination address of CUBE. To route calls from CUCM to CUBE, you configure a SIP trunk on CUCM with the destination address of CUBE. This trunk is then referenced by a route group, route list, and route pattern. When a call matches the route pattern, CUCM sends the call to CUBE via the SIP trunk. The trunk itself is the element that points to CUBE as the next hop.

Answer

Translation pattern that rewrites the called number to CUBE's IP address

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H.323 gateway configured on CUCM with destination address of CUBE

Answer

Route group with CUBE as the only member

Question 8

A Cisco Unified CM administrator is troubleshooting a call that fails with a 'No Route to Destination' cause code. The called number is 2001, which is an internal extension on a remote cluster. The local cluster has a SIP trunk to the remote cluster and a route pattern of 2XXX pointing to that trunk. The SIP trunk is up, but the call fails. What is the most likely cause?

Accepted Answer

The route pattern is not assigned to a partition that is included in the calling search space of the dialing device.. The most likely cause is that the route pattern 2XXX is in a partition that is not included in the calling search space of the dialing device. Without the partition in the CSS, Unified CM cannot match the pattern, resulting in 'No Route to Destination'. Verifying the device's CSS and partition assignments resolves this issue.

Answer

The remote cluster is not configured with a route pattern for the local cluster, so the call is rejected.

Answer

The SIP trunk is not configured with a calling search space that includes the partition of the route pattern.

Answer

The SIP trunk is not registered to the remote cluster, so the call cannot be routed.

Question 9

What is the purpose of the 'Webex Service' account in Active Directory when using Directory Connector?

Accepted Answer

To read directory objects for synchronization.. The Webex Service account in Active Directory is used by Directory Connector to read (bind and query) directory objects such as users, groups, and attributes for synchronization to Webex. It requires read permissions on the directory partitions being synced. This service account is the identity Directory Connector uses to authenticate to AD and pull the data needed for user provisioning.

Answer

To encrypt the synchronization traffic.

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To manage the user's email password.

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To bypass the firewall.

Question 10

A network engineer is configuring a QoS policy on a Cisco IOS XE router for a collaboration deployment. The engineer needs to ensure that voice traffic is placed in a low-latency queue and that the queue has a strict priority, but also wants to limit voice traffic to 1 Mbps to prevent starvation of other traffic. Which queuing mechanism should be used?

Accepted Answer

Low Latency Queuing (LLQ). Low Latency Queuing (LLQ) is the correct mechanism because it provides a strict priority queue for voice traffic while also allowing a bandwidth limit via the priority command. This ensures that voice packets are serviced first, minimizing latency and jitter, but the policer prevents voice from consuming all bandwidth and starving other traffic. CBWFQ lacks strict priority, WRED is for congestion avoidance, and FIFO is not suitable for real-time traffic.

Answer

Class-Based Weighted Fair Queuing (CBWFQ)

Answer

First-In, First-Out (FIFO) queuing

Answer

Weighted Random Early Detection (WRED)