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Cisco Implementing Cisco Collaboration Core Technologies (CLCOR, 350-801, v2.0 blueprint, CCNP Collaboration) (CLCOR) (CLCOR) — Questions 175

263 questions total · 4pages · All types, answers revealed

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1
MCQhard

When troubleshooting a Hybrid Service, you need to collect 'Diagnostic Logs'. Where do you download these from?

A.The Webex App settings menu.
B.The Expressway-C Maintenance > Diagnostics page.
C.The Cisco CLI using the 'log collect' command.
D.Control Hub under the Troubleshooting tab.
AnswerB

This is the standard location for generating diagnostic log bundles on an Expressway.

Why this answer

The Expressway provides a dedicated 'Maintenance > Diagnostics' section where you can generate and download comprehensive log bundles for support analysis.

2
Multi-Selectmedium

Which TWO of the following are valid methods for providing high availability for IP phones in a CUCM design?

Select 2 answers
A.Configuring multiple TFTP servers in Option 150
B.IP address redundancy via DHCP
C.SRST deployment
D.Load balancing via round-robin
E.CUCM Group configuration
AnswersC, E

Ensures functionality during central node or WAN loss.

Why this answer

CUCM Groups (primary/secondary) and SRST (for WAN outage survivability) are the two primary methods for ensuring phone availability.

3
MCQeasy

What is the first step to enable Webex Hybrid Services in a new organization?

A.Register the organization in Control Hub.
B.Purchase a PSTN plan.
C.Install the Expressway-C software.
D.Assign licenses to all users.
AnswerA

Control Hub organization registration is the baseline for all services.

Why this answer

Enabling the Hybrid Services feature in the Control Hub settings is the foundational step before registering any connectors.

4
MCQmedium

Which deployment model should be chosen for Cloud Connected PSTN (CCP) if the organization wants to leverage their existing carrier contracts?

A.Local Gateway PSTN
B.Webex Calling PSTN via Cisco
C.Cloud Connected PSTN (CCP)
D.Webex Calling Dedicated Instance
AnswerC

CCP is specifically designed to bring existing carrier trunks into Webex Calling.

Why this answer

CCP allows customers to connect their own carrier SIP trunks directly to the Webex Calling cloud via a certified partner.

5
Multi-Selectmedium

Which TWO of the following are valid deployment models for the Webex Calling PSTN connectivity? (Choose two)

Select 2 answers
A.Webex Calling dedicated ISP.
B.Hybrid Cloud PSTN.
C.Local Gateway.
D.Peer-to-Peer PSTN.
E.Cloud Connected PSTN (CCP).
AnswersC, E

This is a core supported PSTN connectivity model.

Why this answer

Customers can choose between Local Gateway (using on-premises hardware) or Cloud Connected PSTN (using a cloud provider partner) for their calling connectivity.

6
MCQmedium

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?

A.show class-map configuration
B.show ip rtp statistics
C.show qos interface
D.show policy-map interface
AnswerD

This command displays the statistics for the policy map applied to the interface, including marking actions.

Why this answer

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.

7
MCQeasy

Which service must be running for a phone to receive its configuration file?

A.Cisco Database Layer Monitor
B.Cisco CallManager
C.Cisco TFTP
D.Cisco CTI Manager
AnswerC

TFTP is the protocol used to distribute config files.

Why this answer

The Cisco TFTP service provides the configuration files to endpoints upon registration.

8
MCQmedium

You are troubleshooting a scenario where internal calls between two sites are failing. The call fails immediately when dialed. What is the most effective way to verify that the Calling Search Space (CSS) has access to the destination partition?

A.Check the 'Route Filter' list.
B.Use the 'Route Pattern' report in Cisco Unified Reporting.
C.Reset the SIP trunk.
D.Use the Dialed Number Analyzer (DNA) tool.
AnswerD

DNA allows you to simulate a call from a specific device to see if the partition is reachable.

Why this answer

The 'Dialed Number Analyzer' (DNA) tool in CUCM is designed specifically to trace the call routing logic based on CSS and partitions.

9
Multi-Selecthard

Which THREE of the following are required for the successful operation of the Webex Hybrid Calendar service? (Choose three)

Select 3 answers
A.A valid configuration in Control Hub.
B.An Expressway-C node.
C.A Cisco Unified Communications Manager cluster.
D.A public PSTN trunk.
E.A service account in the Exchange/O365 environment.
AnswersA, B, E

The cloud-side configuration ties the connector to the tenant.

Why this answer

The Hybrid Calendar requires a properly configured service account, the connector host (Expressway), and an integration configuration in Control Hub.

10
MCQhard

You are troubleshooting a scenario where users in a Hybrid Calendar deployment cannot see free/busy information for their on-premises Exchange resources. Which tool in Control Hub provides the most granular logs for the Hybrid Calendar service?

A.Hybrid Service Connector Status Logs
B.Exchange EWS Connectivity Test
C.Control Hub Analytics Dashboard
D.Webex Calling Provisioning Report
AnswerA

Connector logs are the primary diagnostic tool for hybrid services.

Why this answer

The Hybrid Service logs accessible via the 'Troubleshoot' section within the Hybrid Service connector page provide specific exchange connectivity data.

11
MCQhard

A collaboration designer must ensure that inter-cluster calls between two CUCM clusters remain secure. Which mechanism must be implemented to ensure media remains encrypted from end to end?

A.Disable SIP inspection on the firewalls.
B.Configure a VPN between the two clusters.
C.Ensure SRTP is enabled on the SIP Trunk Security Profile.
D.Enable MTP (Media Termination Point) for all calls.
AnswerC

SRTP is required on the trunk security profile to support encrypted media.

Why this answer

SRTP must be used across the SIP inter-cluster trunk to ensure the media stream is encrypted between endpoints in different clusters.

12
MCQmedium

A user reports that calls to an external PSTN number are failing. The trace shows a '403 Forbidden' response from the provider. Where in CUCM should the administrator investigate the outbound calling search space (CSS) settings?

A.Media Resources > Conference Bridge
B.System > Service Parameters
C.Device > Trunk > Transformation CSS
D.Device > Phone > CSS
AnswerD

This is the primary location for setting the CSS for the device.

Why this answer

The Device CSS or Line CSS determines the permissions for a specific device, and they must be configured to include the partition containing the route pattern.

13
MCQhard

An administrator needs to enable Hybrid Calendar Service for a user who uses Microsoft Exchange 2019 on-premises. Which service component must be deployed to facilitate the integration?

A.Expressway-C Calendar Connector
B.Hybrid Media Node
C.Webex Calling Gateway
D.Webex Edge Node
AnswerA

The Calendar Connector resides on the Expressway-C and interacts with Exchange.

Why this answer

The Hybrid Calendar Service requires the Expressway-C connector to communicate with the Exchange Web Services (EWS).

14
MCQeasy

Which network condition is the most significant contributor to poor voice quality in a VoIP environment?

A.Low CPU usage on the router
B.Static IP addresses
C.Jitter
D.High bandwidth usage
AnswerC

Jitter causes audio gaps and garbled sounds that jitter buffers struggle to correct.

Why this answer

Jitter, packet loss, and latency are the three main contributors to poor voice quality, but jitter (variation in packet arrival) is often the most difficult to resolve once it reaches the end device.

15
MCQhard

You have a requirement to use secure signaling for SIP endpoints. Which protocol and port combination must be used in the SIP Security Profile?

A.SIP TLS 5061
B.HTTP 443
C.SIP TCP 5060
D.SRTP 5061
AnswerA

TLS on 5061 provides secure signaling.

Why this answer

SIPS (SIP over TLS) uses port 5061 to ensure encrypted signaling.

16
MCQhard

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?

A.Configure a Transcoder profile on the IOS gateway and assign it to the device pool's MRGL.
B.Set the Region codec to 'G.711 to G.729' explicitly.
C.Enable 'Allow Transcoding' in the Service Parameters.
D.Configure the IOS gateway as a Media Termination Point (MTP) only.
AnswerA

Transcoders must be associated with the device's MRGL to be invoked during media negotiation.

Why this answer

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.

17
MCQeasy

In the context of collaboration design, what is the purpose of the 'Location' in CUCM?

A.Defining physical building layouts
B.Device registration grouping
C.Call Admission Control
D.TFTP file distribution
AnswerC

Locations enforce bandwidth limits.

Why this answer

Locations are used for Call Admission Control (CAC) to limit the bandwidth consumed by calls traversing a specific path.

18
MCQeasy

A Webex Desk Pro is failing to provision via the Cisco Webex Control Hub. The device displays 'Provisioning Error'. Which configuration component is primarily responsible for holding the authentication credentials required for the device to pull its configuration?

A.Activation Code
B.TFTP Address
C.SIP Digest User
D.VLAN ID
AnswerA

The activation code is the primary method for secure onboarding.

Why this answer

The Activation Code or the specific Device Configuration profile in Control Hub provides the credentials needed for the device to authenticate against the cloud service.

19
MCQhard

You have a cluster with multiple nodes. You want to ensure that phones in the 'New York' office prioritize registration to a 'New York' subscriber. How do you implement this?

A.Create a CM Group with the local subscribers and assign it to the Device Pool.
B.Use a Route Group to point to the subscriber.
C.Assign the phones to a specific Region.
D.Configure the TFTP server address in the phone.
AnswerA

CM Groups control the registration order for devices.

Why this answer

By creating a specific CM Group with the New York subscribers in the preferred order and assigning it to the New York Device Pool.

20
MCQmedium

You are troubleshooting intermittent audio quality. You notice that RTCP packets are arriving with high variance. What does this indicate?

A.Latency
B.Codec Mismatch
C.Packet Loss
D.Jitter
AnswerD

High variance in arrival time is the definition of jitter.

Why this answer

Intermittent audio quality and high variance in RTCP reports point directly to network jitter.

21
Multi-Selectmedium

Which TWO of the following are valid types of Media Resources in CUCM?

Select 2 answers
A.Music on Hold Server
B.Conference Bridge
C.Calling Search Space
D.Route Group
E.Translation Pattern
AnswersA, B

MOH servers are a type of media resource.

Why this answer

CUCM supports various media resources, including hardware and software based conference bridges and MOH servers.

22
MCQhard

To ensure that G.729 is used for all inter-site calls but G.711 is used for intra-site calls, what specific CUCM construct must you define?

A.Location
B.Device Pool
C.Transcoder
D.Region Relationship
AnswerD

Region relationships explicitly define codec limits between sites.

Why this answer

You must define Regions and then assign the 'Region Relationship' to dictate the codec allowed between those regions.

23
MCQmedium

What is the primary function of the Cisco Webex Edge Audio service?

A.To allow calling into Webex meetings via the corporate PSTN network.
B.To allow users to join meetings without an internet connection.
C.To encrypt all meeting audio traffic.
D.To provide high-definition video conferencing.
AnswerA

This service routes meeting audio through the company's existing PSTN trunking.

Why this answer

Webex Edge Audio allows users to use their existing PSTN connectivity to join Webex meetings, reducing audio costs.

24
MCQmedium

You need to enforce a specific codec for calls traversing a CUBE. Where is the most appropriate place to apply this configuration?

A.Global voice service
B.SIP profile
C.Under the interface
D.Voice class codec applied to dial-peer
AnswerD

This is the standard method for codec selection on a dial-peer.

Why this answer

A voice class codec is defined globally and then applied to the specific dial-peer using the voice-class codec command.

25
MCQmedium

What happens to a user's Webex account if they are removed from the synchronized Active Directory group?

A.The account remains active indefinitely.
B.The account is moved to a guest group.
C.The account becomes a free account.
D.The account is deactivated in Webex.
AnswerD

Synchronization ensures that the cloud status matches the source directory status.

Why this answer

The Directory Connector will detect the removal and trigger the account's deletion or suspension in the Webex cloud based on the configured policy.

26
MCQmedium

Which field in a Route Pattern can be used to discard the first few digits of a dialed number before routing?

A.Calling Search Space
B.Called Party Transform Mask
C.Discard Digits
D.Route Filter
AnswerC

This field allows for stripping digits from the dial string.

Why this answer

The 'Discard Digits' field in the Route Pattern or Translation Pattern configuration allows you to strip prefix digits.

27
MCQhard

You need to ensure that the Webex App can perform 'Click-to-Call' from a browser. What must be installed on the user's machine?

A.The Hybrid Calendar connector.
B.A local PSTN gateway.
C.Cisco Jabber for Windows.
D.Webex browser extension.
AnswerD

The browser extension handles the protocol mapping for click-to-call.

Why this answer

The 'Webex Extension' for browsers enables the integration of click-to-call functionality from web pages directly into the Webex App.

28
MCQmedium

When designing for high availability of Cisco Unified Communications Manager (CUCM) services, which specific configuration ensures that a secondary node takes over call processing if the primary node fails?

A.Configure a CUCM Group in the Device Pool with multiple servers.
B.Set the 'Call Processing Load' value in the System settings.
C.Enable Auto-registration for all phones.
D.Configure the cluster-wide failover parameter in the Service Parameter page.
AnswerA

The Group determines the primary and secondary registration order for phones.

Why this answer

The Device Pool and the associated Cisco Unified Communications Manager Group define which servers a device registers with and in what order.

29
MCQmedium

What is the function of 'Cisco Unified Reporting' in a CUCM environment?

A.To generate cluster and system reports.
B.To monitor network bandwidth.
C.To manage real-time call logs.
D.To perform bulk configuration.
AnswerA

This is the primary purpose of the reporting tool.

Why this answer

Cisco Unified Reporting allows administrators to generate reports on the cluster's health, database status, and configuration details.

30
MCQeasy

When configuring a Device Pool in CUCM, which parameter is responsible for defining the set of codecs used between devices in different regions?

A.Calling Search Space
B.Date/Time Group
C.Location
D.Region
AnswerD

The Region setting defines the codec preference list for inter-region calls.

Why this answer

The Location and Region settings within a Device Pool define the bandwidth and codec policies between endpoints.

31
MCQhard

When troubleshooting CUBE SIP normalization, which tool allows you to view the normalized SIP messages in real-time?

A.show voice class sip-profiles
B.debug ccsip messages
C.debug voip ccapi inout
D.debug sip-ua
E.show sip-profile
AnswerB

This displays the SIP messages being processed by CUBE.

Why this answer

debug ccsip messages provides the view of the SIP signaling, including headers modified by normalization.

32
MCQmedium

When a SIP phone initiates a call, which message does the CUCM send to acknowledge the initial INVITE?

A.401 Unauthorized
B.100 Trying
C.180 Ringing
D.200 OK
AnswerB

100 Trying is the provisional response.

Why this answer

A '100 Trying' message is the standard response to indicate that the INVITE has been received and is being processed.

33
Multi-Selectmedium

Which TWO of the following are valid methods for connecting on-premises PSTN to Webex Calling?

Select 2 answers
A.Direct SIP to CUCM
B.H.323 Trunking
C.Webex Edge for Calling
D.Local Gateway
E.Cloud Connected PSTN
AnswersD, E

This is a supported method for PSTN.

Why this answer

The two primary methods are the Local Gateway (via CUBE/Expressway) and Cloud Connected PSTN (CCP).

34
MCQeasy

Where do you configure the time zone for a specific set of devices, such as those in a specific branch office?

A.Region
B.Enterprise Parameters
C.Location
D.Date/Time Group
AnswerD

Date/Time groups define the time zone settings.

Why this answer

The Date/Time Group is assigned to the Device Pool, which in turn is assigned to the device to set the local time.

35
MCQeasy

Where in Webex Control Hub do you verify the health status of Hybrid Service connectors?

A.Troubleshooting tab
B.Devices tab
C.Services tab
D.Users tab
AnswerC

This section contains the connector status for Hybrid Services.

Why this answer

The 'Services' tab within Control Hub provides a dashboard for all deployed Hybrid Services and their connector health.

36
MCQhard

You are migrating to a new SIP provider. You have a requirement to use 'Early Offer' for all calls on this trunk. Where is this configured?

A.SIP Trunk Security Profile
B.Device Pool
C.Route List
D.SIP Profile
AnswerD

SIP profiles control the signaling offer/answer behavior.

Why this answer

The SIP Profile assigned to the SIP trunk is where you can toggle Early Offer/Delayed Offer settings.

37
MCQeasy

Which of the following is a key advantage of utilizing Cloud Connected PSTN (CCP)?

A.It allows for legacy analog phone support without an ATA.
B.It provides free long-distance calling globally.
C.It requires no internet connection.
D.It eliminates the need for on-premises PSTN gateways.
AnswerD

CCP moves the PSTN termination to the cloud, removing the need for local gateway hardware.

Why this answer

CCP allows for a simplified management experience by connecting your existing PSTN provider directly to the Webex Calling cloud.

38
MCQhard

You need to support Opus codec on a Cisco IP Phone 8865. Which configuration object must be updated to allow this codec?

A.SIP Profile
B.Common Phone Profile
C.Device Defaults
D.Audio Codec Preference List
AnswerD

This list defines which codecs the endpoint is allowed to negotiate.

Why this answer

The 'Common Phone Profile' or 'SIP Profile' doesn't contain codec lists; the 'Audio Codec Preference List' must be modified and applied to the device or the region/location configuration.

39
MCQeasy

Which CUCM service must be activated in Serviceability to allow for the use of the 'Cisco Extension Mobility' feature?

A.Cisco Extension Mobility
B.Cisco DB Replicator
C.Cisco TFTP
D.Cisco CallManager
AnswerA

This is the required service to enable the feature.

Why this answer

The 'Cisco Extension Mobility' service must be activated in the 'Cisco Unified Serviceability' under 'Tools -> Service Activation'.

40
MCQmedium

You are implementing Quality of Service (QoS) for a Cisco IP Phone. Which mechanism ensures that the phone's traffic is tagged correctly even if the user connects a PC to the phone's auxiliary port?

A.Use an ACL to match PC MAC addresses.
B.Enable Auto-QoS on the switch port.
C.Configure switchport voice vlan on the switch interface.
D.Assign a static IP to the PC.
AnswerC

This separates voice traffic into a specific VLAN for priority handling.

Why this answer

The 'switchport voice vlan' command on the access switch port allows the phone to use a dedicated voice VLAN while the PC uses the data VLAN.

41
MCQeasy

An administrator is configuring a new SIP trunk between CUCM and a CUBE. To ensure that CUCM correctly handles mid-call signaling updates such as hold/resume, which parameter in the SIP Profile should be verified?

A.Retry Count
B.SIP Rel1XX Options
C.Disable Early Media on 180
D.SIP Timer T1
AnswerB

Enabling this ensures CUCM handles reliable provisional responses.

Why this answer

The 'SIP Rel1XX Options' or 'Send PRACK' parameters are vital for robust SIP signaling, though 'SIP Rel1XX Options' specifically governs the handling of provisional responses.

42
MCQmedium

When using Webex Calling with the Local Gateway, which protocol is used for the SIP trunk between the CUBE and the Webex Calling cloud?

A.H.323
B.SCCP
C.MGCP
D.SIP
AnswerD

SIP is the standard protocol for trunking in modern VoIP environments.

Why this answer

Webex Calling uses SIP (Session Initiation Protocol) to establish and manage the media and signaling paths between the gateway and the cloud.

43
MCQmedium

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?

A.Digest Authentication
B.OAuth 2.0
C.Basic Authentication
D.Kerberos Constrained Delegation
AnswerB

OAuth is the modern authentication protocol supported by Exchange 2019 and Webex Hybrid Services.

Why this answer

For Exchange 2019, modern authentication (OAuth) is the standard and recommended approach for security and compatibility.

44
MCQmedium

You have a CUCM cluster with high utilization. Which parameter, when adjusted, helps mitigate the load on the TFTP service during a large-scale phone deployment?

A.Keepalive Interval
B.TFTP File Load Factor
C.Max Phone Registrations
D.Registration Timeout
AnswerB

This parameter controls the load on the TFTP service during bursts of requests.

Why this answer

Setting the 'Enable Caching of Signed Files' and 'TFTP File Load Factor' helps optimize the TFTP server's ability to serve requests without overloading.

45
MCQmedium

What is the primary function of a 'Location' object in CUCM?

A.To define the phone's time zone.
B.To define the phone's CSS.
C.To define the phone's codec.
D.To perform Call Admission Control (CAC).
AnswerD

Locations are explicitly for bandwidth-based CAC.

Why this answer

Locations are used to identify the physical site for Call Admission Control (CAC) to limit bandwidth usage.

46
MCQmedium

Which configuration in Control Hub allows you to define the emergency address for a user in a Webex Calling environment?

A.User Profile Settings.
B.Device Settings.
C.Organization Settings.
D.Location Settings.
AnswerD

Emergency addresses are tied to the physical location/site definition.

Why this answer

Location settings in Control Hub allow for the definition of E911 addresses associated with a specific site or user.

47
MCQmedium

What is the result of using a '#' character at the end of a Route Pattern?

A.It forces immediate routing.
B.It doubles the inter-digit timeout.
C.It marks the call as an emergency call.
D.It blocks the call.
AnswerA

The '#' acts as an immediate send/terminate signal.

Why this answer

The '#' character acts as a terminator, allowing the call to be routed immediately without waiting for the inter-digit timeout.

48
MCQmedium

You have a requirement to play a custom announcement when a call is placed on hold. Where do you configure this?

A.Device Pool configuration.
B.Music on Hold Audio Source.
C.Route Group configuration.
D.SIP Profile.
AnswerB

Audio source files are uploaded and referenced here.

Why this answer

Custom hold music is managed via 'Music on Hold (MoH) Server' settings and 'Audio Source' files uploaded to the CUCM.

49
MCQeasy

Which file does an IP phone download first to obtain its configuration from the TFTP server?

A.Dialplan.xml
B.SEP[MAC].cnf.xml
C.Ringlist.xml
D.CTLFile.tlv
AnswerB

This is the standard config file for Cisco IP phones.

Why this answer

IP phones download a configuration file (usually XML) specific to their MAC address (SEP[MAC].cnf.xml) from the TFTP server.

50
MCQhard

In a multi-site deployment, you have a requirement to transcode between G.711 and G.729. If the transcoder resources are exhausted, what is the expected outcome for a new call requiring this conversion?

A.The call will use G.711 regardless
B.The call will be rejected
C.The call will proceed with no audio
D.The call will fall back to an MTP
AnswerB

Without an available transcoder, the mismatch in codec requirements leads to call rejection.

Why this answer

If the MRGL is exhausted or no transcoder is available, the call will fail the capability negotiation and be rejected by CUCM.

51
MCQmedium

Which design principle must be followed when implementing a centralized call processing deployment with remote branch offices connected via a WAN?

A.Enable SRST on the local branch gateway to handle call processing during a WAN outage.
B.Deploy a dedicated CUCM node in every branch office.
C.Configure H.323 gateways at each site to communicate directly with all remote phones.
D.Use RSVP to guarantee bandwidth across the WAN for signaling.
AnswerA

SRST provides local call control when the WAN link to the central CUCM cluster is lost.

Why this answer

When the WAN link fails, Survivable Remote Site Telephony (SRST) or Cisco Unified SRST is required to keep the phones registered and functional.

52
MCQeasy

Where do you define the default dial plan for a new CUCM cluster?

A.System > Dial Plan Configuration
B.Service Parameters
C.You create partitions, CSS, and route patterns manually.
D.Enterprise Parameters
AnswerC

The dial plan is constructed incrementally via patterns and partitions.

Why this answer

Dial plans are constructed using Route Patterns, Partitions, and CSS; there is no single 'default dial plan' switch.

53
MCQmedium

Which service must be active for CTI applications (like Cisco Finesse) to control phones?

A.Cisco CallManager
B.Cisco CTIManager
C.Cisco TFTP
D.Cisco Database Layer Monitor
AnswerB

CTIManager is the interface for CTI apps.

Why this answer

The Cisco CTIManager service acts as the gateway between the CTI applications and the CallManager service.

54
MCQhard

When designing a secure collaboration network, what is the best practice for handling certificates in a CUCM and Expressway cluster?

A.Use self-signed certificates on all nodes.
B.Disable certificate verification on all endpoints.
C.Use the Publisher as the CA for the entire network.
D.Use a trusted third-party CA for all servers.
AnswerD

Third-party CAs are trusted by all external and internal devices.

Why this answer

Using a trusted, third-party Certificate Authority (CA) ensures that all certificates are valid across both internal and external endpoints without security warnings.

55
Multi-Selecthard

Which THREE steps are involved in the 'Cisco Unified Communications Manager' disaster recovery process?

Select 3 answers
A.Delete the existing TFTP files.
B.Perform a full system backup using DRS.
C.Run the 'utils dbreplication reset' command.
D.Restore the data using the DRS Restore tool.
E.Install a fresh CUCM instance on the new hardware.
AnswersB, D, E

The backup is the foundation of the restore.

Why this answer

DRS (Disaster Recovery System) requires a backup, a clean install of the same version, and a restore operation.

56
MCQhard

A branch office has a limited bandwidth link. You need to ensure that no more than 5 calls can be made across the WAN at once. What should you configure?

A.Define a Location and set the Audio Bandwidth limit.
B.Modify the Region setting.
C.Create a CSS to block calls.
D.Configure a Route Filter.
AnswerA

Location bandwidth limits directly control call concurrency.

Why this answer

By creating a Location and setting the audio bandwidth limit to 5 times the codec bandwidth (e.g., 5 * 80kbps = 400kbps), you can restrict the call volume.

57
Multi-Selectmedium

Which TWO features are included in the Webex Control Hub 'Troubleshooting' tool?

Select 2 answers
A.Historical call quality data analysis
B.Real-time call participant monitoring
C.Direct router configuration
D.Automated firmware deployment
E.User password reset
AnswersA, B

Provides historical insights into call trends.

Why this answer

The tool allows for real-time call monitoring and historical report generation for voice/video calls.

58
MCQmedium

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

A.The call is placed but with a lower quality codec
B.The call is put on hold until bandwidth is available
C.The call proceeds, but marks the packets with Best Effort
D.The call is blocked
AnswerD

If resources cannot be reserved, the call attempt will be denied.

Why this answer

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

59
MCQmedium

You are designing a Call Admission Control (CAC) policy for a site with limited bandwidth. Which feature should you use to prevent over-subscription of the WAN link?

A.Location-based CAC
B.Quality of Service (QoS)
C.Resource Reservation Protocol (RSVP)
D.Gatekeeper-based CAC
AnswerA

Location-based CAC allows administrators to set bandwidth limits for locations.

Why this answer

Location-based CAC in CUCM allows for setting bandwidth limits per site/region, preventing over-subscription.

60
Multi-Selectmedium

Which TWO of the following media resource types are supported in CUCM?

Select 2 answers
A.IP Phone
B.Dial-Peer
C.Media Termination Point (MTP)
D.Voice Gateway
E.Transcoder
AnswersC, E

MTPs are a standard media resource type.

Why this answer

Transcoders and MTPs are core media resources in the Cisco collaboration suite.

61
MCQhard

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?

A.Weighted Fair Queuing (WFQ)
B.Priority Queuing (PQ) only
C.Random Early Detection (RED)
D.Low Latency Queuing (LLQ)
AnswerD

LLQ is the industry standard for handling real-time video/voice traffic.

Why this answer

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

62
MCQeasy

Which component is required to synchronize users from an on-premises Active Directory to the Webex Cloud?

A.Cisco Directory Connector
B.Webex Calling Admin Console
C.Expressway-C
D.Cisco Webex HDS
AnswerA

Directory Connector manages the sync between local AD and the cloud.

Why this answer

The Cisco Directory Connector is the standard tool for provisioning and synchronizing user identities from LDAP/AD to Webex.

63
Multi-Selecteasy

Which TWO of the following are valid components of a Cisco IOS voice gateway configuration?

Select 2 answers
A.Phone button template
B.Dial-peers
C.CUCM route pattern
D.Voice translation rules
E.Device pool
AnswersB, D

The basis for call routing.

Why this answer

Dial-peers and voice translation rules are core components of voice gateway configuration.

64
Multi-Selecteasy

Which TWO of the following are necessary to configure 'Hybrid Call Service' for Cisco Unified Communications Manager? (Choose two)

Select 2 answers
A.Cisco Unified Communications Manager configuration.
B.A separate Webex Edge server.
C.An on-premises PSTN gateway.
D.Expressway-C registered to Webex.
E.A dedicated public IP address for the CUCM.
AnswersA, D

CUCM needs to be configured to talk to the Expressway-C.

Why this answer

Hybrid Call Service requires an Expressway-C registered to the cloud and a corresponding configuration on the CUCM side to allow for call routing.

65
Multi-Selecthard

Which THREE factors influence dial-peer matching for incoming calls on a Cisco IOS XE gateway?

Select 3 answers
A.destination-pattern
B.session target
C.answer-address
D.incoming uri
E.incoming called-number
AnswersC, D, E

Matches the calling number (ANI).

Why this answer

Incoming dial-peer selection is based on the DNIS (called number), ANI (calling number), and the incoming port/SIP URI.

66
MCQmedium

You are troubleshooting a scenario where G.711 is being used instead of the expected Opus codec between two endpoints in the same region. What is the most likely cause in the CUCM configuration?

A.Audio Codec Preference List
B.Phone NTP settings
C.SIP Trunk Security Profile mismatch
D.Location-based bandwidth limit
AnswerA

The codec preference list dictates the order and availability of codecs.

Why this answer

If the 'Audio Codec Preference List' or the 'Region' setting does not include Opus as a supported codec, CUCM will fall back to G.711.

67
MCQhard

A user reports that their calls are failing when they roam to a different physical office site. You observe that the device is registered to the primary CUCM cluster but the Location-based CAC is blocking the call. What is the most likely cause?

A.The device is not assigned to a Device Pool with the correct Location configured for the new site.
B.The Region setting in the Device Pool has a lower bitrate than the required codec.
C.The device must be re-registered to a local subscriber instead of the primary cluster.
D.The Calling Search Space is not configured to allow inter-site dialing.
AnswerA

The device must be associated with a Device Pool that maps to the physical location of the site to calculate CAC correctly.

Why this answer

If a device roams, it may inherit a different Location assigned via the Device Pool. If the bandwidth limit between the new location and the destination is exceeded, the call will be rejected.

68
MCQmedium

Which component in the CUCM dial plan allows you to match a pattern and simultaneously transform it into a new number before the final route lookup?

A.Route Pattern
B.Partition
C.Translation Pattern
D.Route Group
AnswerC

Translation patterns are explicitly for digit transformation.

Why this answer

A Translation Pattern is used to change digits (e.g., adding an access code) before the call is routed to a final destination.

69
MCQmedium

Which feature allows you to group multiple gateways and route lists to provide load balancing and failover for outbound calls?

A.Route Pattern
B.Translation Pattern
C.Route List
D.Device Pool
AnswerC

A Route List provides the logic for failover and load balancing across Route Groups.

Why this answer

Route Groups contain a list of gateways, and Route Lists contain an ordered list of Route Groups to provide logical routing paths.

70
MCQhard

You are designing a high-availability solution for Cisco Expressway. Which element is required to load-balance traffic between multiple Expressway nodes?

A.Cisco CUBE redundancy
B.Cisco UCM Group
C.External Load Balancer
D.DNS Round Robin only
AnswerC

Expressway clustering relies on external balancing for ingress traffic.

Why this answer

An external load balancer is required to distribute incoming traffic across the cluster of Expressway-E nodes.

71
MCQmedium

You are troubleshooting a registration issue where the phone sends a REGISTER request, but the server does not respond. What is the most likely issue?

A.Incorrect Model
B.Device Pool mismatch
C.Wrong Password
D.Network Connectivity/Firewall
AnswerD

Lack of response indicates a path failure.

Why this answer

If the phone sends a request and gets no response, it is a reachability or network path issue (firewall/ACL).

72
MCQmedium

You are troubleshooting a scenario where internal calls between two offices are using the G.711 codec, but you want them to use G.729 to save bandwidth. Where should you change the codec setting?

A.Device > Device Settings > Common Device Configuration
B.System > Region Information > Region
C.System > Device Pool
D.System > Location
AnswerB

The Region matrix allows you to define the maximum audio bit rate between specific regions.

Why this answer

The codec used between two devices is determined by the Region setting. You must update the Region matrix to specify G.729 between the two regions.

73
Multi-Selectmedium

Which TWO of the following describe the purpose of the Webex Edge for Devices service?

Select 2 answers
A.Automatically provisions local gateways
B.Provides a SIP trunking gateway
C.Replaces the need for a web proxy
D.Enables hybrid registration (CUCM + Cloud)
E.Allows cloud-based management of on-premises registered devices
AnswersD, E

Allows devices to utilize both environments.

Why this answer

It allows for a hybrid registration model (cloud and CUCM) and enables cloud-based management features.

74
MCQhard

What is the primary difference between a 'Route Pattern' and a 'Translation Pattern'?

A.Translation patterns route calls; route patterns modify numbers.
B.There is no functional difference.
C.Route patterns route calls; translation patterns modify numbers.
D.Route patterns are for internal calls; translation patterns are for external.
AnswerC

This correctly defines their distinct functional purposes.

Why this answer

A Route Pattern is used for routing to a destination, while a Translation Pattern is used for number manipulation during the call setup process.

75
MCQeasy

You are deploying CUBE. Which command enables the CUBE functionality on the Cisco IOS XE router?

A.enable cube
B.mode border-element
C.voice-service enable
D.service cube
AnswerB

This is the required command to activate CUBE.

Why this answer

The mode border-element command is required under the voice service voip configuration to enable CUBE features.

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