CLCOR Practice Test 15 — 15 Questions

Question 1

When using 'RSVP' for Call Admission Control (CAC), what happens if the available bandwidth on the path is less than the requested amount?

Accepted Answer

The call is blocked. RSVP is a resource reservation protocol. If the path cannot support the required bandwidth, the call is rejected by the system.

Answer

The call is placed but with a lower quality codec

Answer

The call is put on hold until bandwidth is available

Answer

The call proceeds, but marks the packets with Best Effort

Question 2

In a Cisco Collaboration environment, what is the purpose of the 'Media Termination Point' (MTP) in relation to call signaling?

Accepted Answer

To provide DTMF interworking between endpoints.. MTPs are used to provide features like DTMF interworking (e.g., SIP to H.323) when the endpoints do not support the same method.

Answer

To limit the bandwidth consumed by a call.

Answer

To provide codec transcoding services.

Answer

To cache video streams for faster playback.

Question 3

Which THREE of the following are key features provided by a QoS policy-map?

Accepted Answer

Bandwidth reservation. Policy-maps define the traffic treatment, such as bandwidth assignment, queueing, and dropping policies.

Answer

Interface IP address assignment

Answer

Dynamic routing updates

Question 4

Which command allows an administrator to view the current status of registered media resources, such as transcoders, on a Cisco IOS gateway?

Accepted Answer

show sccp. 'show sccp connections' or 'show sccp' is the standard way to verify the registration status and capabilities of media resources on a gateway.

Answer

show dial-peer voice

Answer

show media resources

Answer

show voice gateway status

Question 5

An administrator needs to enforce a bandwidth limit for video calls at a specific site in CUCM. Which configuration object should be used?

Accepted Answer

Location. Locations in CUCM are used to define available bandwidth for audio and video calls at a specific geographic site.

Answer

Region

Answer

Partition

Answer

Device Pool

Question 6

You are configuring Webex Hybrid Data Security (HDS). What is the purpose of the 'Key Management Service' (KMS) in this architecture?

Accepted Answer

To allow the enterprise to maintain control over encryption keys. HDS allows customers to hold their own keys; the HDS nodes in the private cloud handle the key encryption and decryption requests to ensure data privacy.

Answer

To authenticate users against local Active Directory

Answer

To facilitate the storage of encrypted meeting recordings

Answer

To manage SIP signaling encryption

Question 7

When managing Webex Calling using the 'Webex Calling' app versus the 'Webex' app, what determines the calling capabilities?

Accepted Answer

The user's assigned license in Control Hub.. The calling capabilities are determined by the license assigned to the user in Control Hub, which dictates the service features available to the client.

Answer

The firmware version of the desk phone.

Answer

The location of the user's home network.

Answer

The operating system of the device.

Question 8

A network administrator is troubleshooting one-way audio issues between a Cisco IP Phone and a Cisco TelePresence endpoint. The path traverses a router with a configured class-map. Which command would you use to verify the packet markings on the ingress interface?

Accepted Answer

show policy-map interface. The 'show policy-map interface' command is the primary tool to verify QoS statistics and confirm if packets are being classified and marked as expected.

Answer

show class-map configuration

Answer

show ip rtp statistics

Answer

show qos interface

Question 9

You are configuring a Media Resource Group List (MRGL) in CUCM to allow for transcoding. A call is placed between two endpoints where one supports G.711 and the other only supports G.729. If the MRGL contains a Transcoder, what must be configured to ensure the call succeeds?

Accepted Answer

Configure a Transcoder profile on the IOS gateway and assign it to the device pool's MRGL.. The Transcoder must be registered to a Media Resource Group (MRG) that is included in the MRGL assigned to the device pool or the device itself.

Answer

Set the Region codec to 'G.711 to G.729' explicitly.

Answer

Enable 'Allow Transcoding' in the Service Parameters.

Answer

Configure the IOS gateway as a Media Termination Point (MTP) only.

Question 10

Which DSCP value is recommended for Call Signaling traffic in a Cisco Unified Communications network?

Accepted Answer

CS3 (24). CS3 (DSCP 24) is the recommended value for signaling traffic to prioritize it over standard data traffic.

Answer

AF31 (26)

Answer

EF (46)

Answer

AF41 (34)

Question 11

You are troubleshooting a Webex Hybrid Calendar issue where meetings are missing for a specific user. What tool can you use to check the 'Calendar API' calls?

Accepted Answer

Expressway-C Calendar Connector status page.. The 'Calendar Connector' status page in the Expressway provides an interface to view recent API requests and responses to the calendar server, which is essential for troubleshooting synchronization issues.

Answer

The Cisco Webex App debug logs.

Answer

Control Hub Troubleshooting tool.

Answer

Active Directory event viewer.

Question 12

You are implementing a QoS policy on a WAN edge router. You have a requirement to prioritize video traffic. Which queueing mechanism is recommended by Cisco to minimize jitter and latency for video streams?

Accepted Answer

Low Latency Queuing (LLQ). Low Latency Queuing (LLQ) combines priority queuing with Class-Based Weighted Fair Queuing (CBWFQ) to provide strict priority for latency-sensitive traffic like video.

Answer

Weighted Fair Queuing (WFQ)

Answer

Priority Queuing (PQ) only

Answer

Random Early Detection (RED)

Question 13

You are configuring a Cisco IOS router to perform traffic shaping for voice traffic. Why is traffic shaping often used in conjunction with queuing?

Accepted Answer

To prevent interface congestion by smoothing out traffic bursts. Traffic shaping smooths out bursts of traffic, preventing the buffer overflows that would lead to packet loss and poor voice quality.

Answer

To prioritize voice over data traffic

Answer

To reduce the CPU utilization of the router

Answer

To increase the total throughput of the interface

Question 14

Which option allows a customer to keep their existing PSTN numbers while moving to Webex Calling?

Accepted Answer

Number porting.. Number porting allows customers to move their existing numbers from their current carrier to the Webex Calling service provider.

Answer

Number aliasing.

Answer

Number forwarding.

Answer

Number provisioning.

Question 15

A company is implementing Webex Edge Connect. They require a dedicated circuit. Who must they coordinate with to set up the physical connection?

Accepted Answer

A certified Cisco Webex Edge Connect partner.. Webex Edge Connect requires a connection through a certified partner or service provider who can provide the MPLS/dedicated access to the Webex cloud.

Answer

The local Internet Service Provider only.

Answer

The Webex Control Hub automated provisioning tool.

Answer

Cisco Technical Support