View Full Cisco CCNP Collaboration 350-801 Exam Dumps and Practice Test Dumps.

 

Question 321

Which CUCM feature determines which calling permissions are available to a device?

1. Region
2. Media Resource Group
3. Calling Search Space
4. Device Pool

Correct Answer: 3

Explanation

A Calling Search Space, or CSS, determines which partitions a calling device can access. This allows administrators to control which destinations users are permitted to reach. For example, an organization can create separate partitions for internal, local, long-distance, international, and emergency numbers and then assign appropriate CSSs to different users or devices. When a number is dialed, CUCM searches only the partitions available through the caller’s CSS. This makes CSS configuration an important component of CUCM dial-plan security. Regions, device pools, and media resource groups serve different purposes and do not directly determine which dial-plan partitions a caller can access.

Question 322

Which SIP method is used to terminate an established session?

1. REGISTER
2. BYE
3. INVITE
4. OPTIONS

Correct Answer: 2

Explanation

The SIP BYE method is used to terminate an established SIP session. After a call has been successfully established, either endpoint can send a BYE request when it wants to end the session. The receiving side normally responds with an appropriate final response, such as 200 OK. INVITE is used to establish or modify sessions, REGISTER is used to associate a SIP endpoint with a registrar, and OPTIONS can be used to discover capabilities or determine availability. When troubleshooting call disconnects, engineers can inspect SIP signaling to determine which endpoint generated the BYE and whether any intermediate device altered or rejected the request.

Question 323

Which CUCM object is primarily used to select a destination route based on dialed digits?

1. Route Pattern
2. Device Pool
3. Region
4. Media Resource Group

Correct Answer: 1

Explanation

A route pattern in CUCM defines a pattern of dialed digits that can be used to route calls toward a gateway, trunk, or route list. CUCM compares the digits dialed by the user against configured patterns and selects an appropriate route according to the dial plan. Route patterns can support different dialing requirements, including local, national, international, and service-provider calls. Device pools provide common endpoint settings, regions control codec and bandwidth relationships, and media resource groups organize resources such as transcoders and conference bridges. Correct route-pattern design is therefore fundamental to implementing a predictable and scalable enterprise voice-routing architecture.

Question 324

Which protocol is used to dynamically provide IP configuration information to Cisco IP phones?

1. DNS
2. NTP
3. LDAP
4. DHCP

Correct Answer: 4

Explanation

Dynamic Host Configuration Protocol, or DHCP, provides IP configuration information to Cisco IP phones and other network devices. A DHCP server can provide an IP address, subnet mask, default gateway, DNS server information, and other options required by the endpoint. Cisco IP phones can also use DHCP options to discover the address of their TFTP server, depending on the deployment. DHCP simplifies endpoint deployment because administrators do not need to manually configure every phone. DNS is used for name resolution, NTP provides time synchronization, and LDAP provides directory services. Proper DHCP configuration is therefore an important prerequisite for successful phone initialization and registration.

Question 325

Which Cisco component provides centralized call-processing functions for Cisco IP phones?

1. Cisco Unified Communications Manager
2. Cisco Unity Connection
3. Cisco Expressway-E
4. Cisco CUBE

Correct Answer: 1

Explanation

Cisco Unified Communications Manager, or CUCM, provides centralized call-processing functions for Cisco IP phones and many other collaboration endpoints. It manages registration, call setup and teardown, dial-plan processing, device configuration, calling permissions, and numerous supplementary services. CUCM can also integrate with gateways, trunks, voicemail systems, conferencing resources, directory services, and other collaboration components. Unity Connection focuses primarily on voicemail, Expressway-E provides edge services, and CUBE provides voice and SIP border functions. Understanding the role of CUCM is essential because many other Cisco collaboration components depend on CUCM for centralized call control and configuration.

Question 326

Which SIP response indicates that the requested destination could not be found?

1. 200 OK
2. 404 Not Found
3. 486 Busy Here
4. 503 Service Unavailable

Correct Answer: 2

Explanation

SIP response code 404 Not Found indicates that the server could not find the requested destination or user associated with the request. In a Cisco collaboration environment, a 404 response can indicate that the destination is not known to the relevant SIP service or that routing information is missing. Troubleshooting should include checking the dialed number, route patterns, SIP routes, DNS information, and destination registration depending on the architecture. A 200 response indicates success, 486 generally indicates that the destination is busy, and 503 indicates service unavailability. SIP response analysis can help identify whether a call problem is related to routing, destination availability, or service operation.

Question 327

Which CUCM component allows administrators to organize media resources into logical groups?

1. Calling Search Space
2. Route List
3. Media Resource Group
4. Partition

Correct Answer: 3

Explanation

A Media Resource Group, or MRG, allows administrators to group related media resources logically within CUCM. Resources that may be included include conference bridges, transcoders, annunciators, and other supported media services. MRGs can then be associated with Media Resource Group Lists, or MRGLs, which determine the resources available to particular devices or device pools. This approach gives administrators greater control over resource selection and geographic placement. Calling Search Spaces and partitions are related to dial-plan access, while route lists control call-routing paths. Proper media-resource organization can improve resource utilization and ensure endpoints use appropriate conferencing or transcoding services.

Question 328

Which component is typically positioned inside the enterprise network for Cisco MRA traversal?

1. Expressway-C
2. Expressway-E
3. CUBE
4. Unity Connection

Correct Answer: 1

Explanation

Cisco Expressway-C is normally deployed inside the enterprise network as the internal component of a Mobile and Remote Access architecture. It works with Expressway-E at the network edge to provide secure traversal for supported collaboration clients connecting from outside the organization. Expressway-C communicates with internal collaboration infrastructure such as CUCM and can participate in the required traversal and authentication processes. Expressway-E is normally positioned at the edge, while CUBE focuses on SIP and voice interoperability. Unity Connection provides voicemail. Correct Expressway-C and Expressway-E configuration, including certificates and traversal relationships, is essential for successful MRA operation.

Question 329

Which codec is commonly associated with high-quality wideband speech in Cisco collaboration environments?

1. G.729
2. G.711
3. G.722
4. GSM

Correct Answer: 3

Explanation

G.722 is a wideband audio codec commonly used to provide higher-quality speech than traditional narrowband codecs. It can provide improved voice clarity when the endpoints and network support it. G.711 is widely used for standard high-quality narrowband voice and typically requires more bandwidth than compressed codecs such as G.729. Codec selection in CUCM can be influenced by region configuration and endpoint capabilities. Engineers should also consider bandwidth, transcoding requirements, and interoperability when selecting codecs. Understanding codec characteristics is important when designing Cisco collaboration deployments because codec choice affects both perceived audio quality and network resource consumption.

Question 330

What is the primary purpose of DNS SRV records in a Cisco collaboration deployment?

1. To encrypt RTP
2. To identify services and their available hosts
3. To assign IP addresses to phones
4. To synchronize clocks

Correct Answer: 2

Explanation

DNS Service records, or SRV records, identify specific services and the hosts that provide those services. Cisco collaboration components and clients can use SRV records to discover appropriate servers for services such as SIP or other collaboration functions. This allows administrators to provide service discovery without requiring every client to have individual server addresses manually configured. DNS SRV records can be especially important in deployments involving Expressway, SIP services, and remote client discovery. DHCP assigns network parameters, NTP synchronizes clocks, and SRTP protects media. Accurate DNS configuration is therefore an important dependency for reliable collaboration service discovery.

Question 331

Which CUCM feature can modify called-party digits before further call routing occurs?

1. Translation Pattern
2. Device Pool
3. Route Group
4. Region

Correct Answer: 1

Explanation

A translation pattern can manipulate dialed digits before CUCM continues processing the call. Depending on configuration, digits may be added, removed, or transformed to match another numbering plan. Translation patterns are useful when organizations need to normalize numbers, adapt internal dialing to external services, or modify numbers for specific routing requirements. Unlike a route group, which identifies gateways or trunks, a translation pattern focuses on digit transformation and call-processing behavior. Device pools provide common device settings, while regions control codec and bandwidth relationships. Properly designed translation patterns can simplify complex dial plans and reduce the need for excessive endpoint-specific configuration.

Question 332

Which protocol provides encryption and integrity for SIP signaling when SIP is transported securely?

1. RTP
2. TLS
3. DHCP
4. TFTP

Correct Answer: 2

Explanation

Transport Layer Security, or TLS, can protect SIP signaling by encrypting communication and helping ensure message integrity. Secure SIP deployments commonly use TLS between supported collaboration components and endpoints. Certificates are typically involved in establishing trust and validating the identity of participating systems. TLS protects signaling information such as call-control messages, while SRTP is generally used to protect the actual audio or video media. RTP itself does not provide encryption, DHCP supplies network configuration, and TFTP is primarily used for configuration and firmware-related services. Administrators implementing secure collaboration should verify certificate trust, supported protocols, and consistent security settings across participating systems.

Question 333

Which CUCM object controls the order in which gateways within a route group are attempted?

1. Route List
2. Partition
3. Calling Search Space
4. Region

Correct Answer: 1

Explanation

A route group contains gateways or trunks that can be used for call routing, while its configuration determines the order or distribution behavior used when selecting members. Route groups are then referenced by route lists, which provide another level of routing organization. This structure allows administrators to build redundant and flexible call-routing designs. Partitions and Calling Search Spaces control dial-plan visibility, while regions manage codec and bandwidth relationships. When troubleshooting external call routing, engineers should examine the route pattern, route list, route group, and gateway or trunk availability to determine why a particular path was selected or why an alternative path was not attempted.

Question 334

Which Cisco collaboration service provides instant messaging and presence capabilities in traditional on-premises deployments?

1. Cisco Unity Connection
2. Cisco CUBE
3. Cisco IM and Presence
4. Cisco SRST

Correct Answer: 3

Explanation

Cisco IM and Presence provides instant messaging and presence functionality in traditional Cisco collaboration deployments. It can integrate with CUCM and supported collaboration clients to provide information about user availability and enable messaging services. Presence information can help users determine whether colleagues are available, busy, away, or otherwise occupied. Unity Connection focuses on voicemail and messaging associated with voice services, while CUBE provides voice and SIP border functions and SRST provides survivability for remote sites. Administrators must ensure appropriate integration, user synchronization, and client configuration for reliable IM and Presence functionality.

Question 335

Which media resource is used to convert between incompatible audio codecs?

1. Conference Bridge
2. Transcoder
3. Annunciator
4. Music on Hold

Correct Answer: 2

Explanation

A transcoder converts media from one codec to another when two endpoints cannot communicate directly using a common codec. This capability is particularly useful when different networks, endpoints, or service providers use different codec requirements. CUCM can access configured transcoding resources through media-resource configuration and use them when required by the call. A conference bridge provides multi-party conferencing, an annunciator provides prerecorded audio prompts, and Music on Hold supplies audio to callers placed on hold. Because transcoding consumes processing resources, administrators should consider expected call volume, codec requirements, and resource placement when designing a collaboration deployment.

Question 336

Which CUCM configuration is used to associate a phone with a specific set of common server and regional settings?

1. Device Pool
2. Route Pattern
3. Partition
4. SIP Trunk

Correct Answer: 1

Explanation

A device pool groups common configuration settings that can be applied to multiple Cisco collaboration endpoints. Depending on the deployment, these settings can include the CUCM group, region, date/time group, SRST reference, and other device-related parameters. Assigning endpoints to the correct device pool helps administrators maintain consistency across groups of phones and simplifies large-scale configuration. Route patterns are used for digit-based call routing, partitions organize dial-plan objects, and SIP trunks provide signaling connectivity between systems. Device pools are especially useful when an organization has multiple sites or groups of users with different regional, server, or survivability requirements.

Question 337

Which SIP method is used by a SIP endpoint to register its current location with a registrar?

1. OPTIONS
2. BYE
3. REGISTER
4. CANCEL

Correct Answer: 3

Explanation

The SIP REGISTER method allows an endpoint to register its current contact information with a SIP registrar. This enables the SIP infrastructure to determine where requests for that user or endpoint should be sent. Registration information can include a contact address and validity period. REGISTER is different from INVITE, which establishes sessions, BYE, which terminates established sessions, and CANCEL, which stops a pending request such as an INVITE before completion. When troubleshooting registration problems, engineers commonly inspect authentication, network connectivity, DNS, certificates when secure signaling is used, and the status of the relevant SIP registrar or call-control system.

Question 338

Which protocol can provide feedback about RTP transmission quality and media statistics?

1. RTCP
2. LDAP
3. TFTP
4. NTP

Correct Answer: 1

Explanation

Real-time Transport Control Protocol, or RTCP, works alongside RTP to provide control information and statistics about media transmission. RTCP reports can provide information related to packet loss, jitter, delay, and other aspects of media performance. This information can assist collaboration administrators in identifying voice and video quality problems. RTP itself carries the actual media packets, while RTCP provides associated monitoring and control information. LDAP is used for directory services, TFTP can deliver configuration or firmware files, and NTP synchronizes clocks. Understanding RTP and RTCP together is useful when diagnosing poor media quality in Cisco voice and video deployments.

Question 339

Which CUCM resource allows multiple participants to join a voice or video conference?

1. Transcoder
2. Conference Bridge
3. Annunciator
4. MTP

Correct Answer: 2

Explanation

A conference bridge provides media mixing and conferencing capabilities that allow multiple participants to communicate within a shared conference session. CUCM can use configured conference bridge resources when endpoints or applications request conferencing services. Conference bridges may be hardware-based or software-based depending on the deployment and supported architecture. A transcoder converts media between codecs, an annunciator provides prerecorded audio prompts, and an MTP can provide specific media termination or packetization functions. Proper media-resource configuration and MRGL assignment help ensure that endpoints can access the appropriate conference resources when a conferencing feature is invoked.

Question 340

Which security protocol is commonly used with RTP to protect voice and video media?

1. SIP
2. TLS
3. SRTP
4. LDAP

Correct Answer: 3

Explanation

Secure Real-time Transport Protocol, or SRTP, is designed to protect RTP-based audio and video media. It can provide encryption, message authentication, and integrity protection for media streams. This helps prevent unauthorized parties from easily listening to or modifying collaboration media while it travels across the network. TLS serves a different role by protecting signaling or other application-layer communications, while SIP provides session signaling and LDAP provides directory services. Secure collaboration deployments may use both TLS and SRTP so that signaling and media are protected separately. Administrators should verify endpoint capabilities, security policies, certificates, and key-management mechanisms when troubleshooting secure media.