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

 

Question 221

Which CUCM component is used to define a set of destinations that a calling device can search?

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

Correct Answer: 2

Explanation

A Calling Search Space, or CSS, defines the partitions that a device, line, or user can search when processing a call. Each partition contains specific dial-plan destinations, and the CSS determines which of those destinations are accessible. This provides an effective method for implementing different calling privileges across users and devices. Route groups organize gateways, device pools provide common configuration settings, and regions influence codec and bandwidth relationships. When a phone can reach some destinations but not others, administrators should inspect the caller’s CSS and the partition assigned to the target. Correct CSS design is essential for predictable CUCM call routing.

Question 222

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

1. 486
2. 503
3. 404
4. 200

Correct Answer: 3

Explanation

SIP response code 404 indicates that the requested resource could not be found. In a collaboration environment, this can occur when a destination or SIP resource is not recognized by the receiving system. A 200 response indicates successful processing, 486 generally indicates that the destination is busy, and 503 indicates service unavailability. When a SIP call receives a 404 response, administrators should verify the dialed URI or number, SIP routing, DNS, dial peers, route patterns, and the configuration of the receiving system. Reviewing the complete SIP signaling exchange helps determine exactly which system generated the response.

Question 223

Which CUCM object provides an ordered list of route groups for call routing?

1. Route List
2. Partition
3. Device Pool
4. Translation Pattern

Correct Answer: 1

Explanation

A Route List provides an ordered collection of route groups that CUCM can use when routing calls. It allows administrators to define primary and alternate routing paths through multiple gateway groups. Route patterns can point to route lists, while route groups contain the actual gateways used for outbound connectivity. Partitions control dial-plan visibility, device pools provide shared endpoint settings, and translation patterns modify digits. When troubleshooting outbound routing, administrators should follow the routing hierarchy from the dialed digits to the route pattern, route list, route group, and gateway. This structure provides flexibility and redundancy for enterprise dial-plan designs.

Question 224

Which protocol protects SIP signaling by encrypting the signaling connection?

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

Correct Answer: 3

Explanation

Transport Layer Security, or TLS, is commonly used to secure SIP signaling. TLS encrypts signaling communication and can provide authentication through digital certificates and trusted certificate authorities. SRTP protects real-time media, RTP transports media without encryption by itself, and DHCP provides network configuration information. Secure SIP deployments require compatible security profiles, valid certificates, correct hostnames, and trusted certificate chains. If a secure SIP trunk or endpoint fails to connect, administrators should inspect certificate validity, trust relationships, TLS versions, security profiles, and network connectivity. Understanding the distinction between TLS and SRTP is essential when implementing end-to-end collaboration security.

Question 225

Which Cisco collaboration platform provides centralized voicemail and messaging services?

1. Cisco Unity Connection
2. Cisco CUBE
3. Cisco Expressway-E
4. Cisco IM and Presence

Correct Answer: 1

Explanation

Cisco Unity Connection provides centralized voicemail and messaging services in Cisco collaboration environments. It manages user mailboxes, greetings, call handlers, message storage, notifications, and voicemail access. CUCM can route unanswered or busy calls to Unity Connection for message processing. CUBE provides SIP border functionality, Expressway-E provides edge connectivity, and IM and Presence provides presence and instant messaging. When voicemail fails, administrators should check the CUCM voicemail configuration, ports, routing, Unity Connection integration, mailbox status, and network connectivity. Proper integration between CUCM and Unity Connection ensures that users can reliably deposit, retrieve, and manage voicemail messages.

Question 226

Which CUCM configuration controls the codec and bandwidth relationship between two endpoint groups?

1. Device Pool
2. Region
3. Partition
4. Route Group

Correct Answer: 2

Explanation

A Region controls codec preferences and bandwidth relationships between groups of endpoints in CUCM. Administrators configure region-to-region relationships to influence the codecs used for calls and to limit the amount of bandwidth allocated for audio and video. This is especially important when endpoints communicate across WAN links with constrained capacity. Device pools provide common endpoint settings, partitions organize dial-plan destinations, and route groups organize gateways. If calls use an unexpected codec or consume too much WAN bandwidth, administrators should verify the endpoint regions and the configured region relationships. Proper region design helps maintain media quality while controlling network resource usage.

Question 227

Which protocol carries voice packets between endpoints after call signaling establishes the media session?

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

Correct Answer: 2

Explanation

Real-time Transport Protocol, or RTP, carries voice and video media after signaling establishes the communication session. RTP uses sequence numbers and timestamps to help receivers process real-time streams correctly. LDAP provides directory services, NTP synchronizes system clocks, and DNS provides name resolution. RTP is sensitive to delay, jitter, and packet loss, making network QoS important for collaboration deployments. If a call connects successfully but users experience one-way audio, missing media, or poor quality, administrators should inspect the RTP path, routing, firewall policies, NAT behavior, codec negotiation, and endpoint configuration. Media troubleshooting should be performed separately from SIP signaling analysis.

Question 228

Which Cisco technology provides survivable call processing at a remote site during loss of CUCM connectivity?

1. SRST
2. LDAP
3. CDP
4. NTP

Correct Answer: 1

Explanation

Survivable Remote Site Telephony, or SRST, provides backup call-processing functionality for supported Cisco IP phones when connectivity to centralized CUCM servers is lost. SRST functionality is commonly provided by a Cisco router at the remote location. During normal operation, phones register with CUCM, while SRST provides fallback services during WAN or centralized-service failures. LDAP provides directory services, CDP provides neighbor discovery, and NTP synchronizes system clocks. Administrators should configure an appropriate SRST reference and verify the router’s SRST settings. Testing failover helps confirm that phones can transition successfully and that essential calling services remain available during network outages.

Question 229

Which CUCM object groups gateways that can be selected for call routing?

1. Region
2. Route Group
3. Partition
4. Device Pool

Correct Answer: 2

Explanation

A Route Group logically groups gateways that CUCM can use for call routing. Route groups can contain multiple gateways and can be referenced by route lists to create ordered or redundant routing strategies. Regions control codec and bandwidth relationships, partitions organize dial-plan destinations, and device pools provide common endpoint configuration. When outbound calls are sent through an unexpected gateway, administrators should verify the route pattern, route list, route group, gateway status, and any configured distribution or priority behavior. Proper route-group design simplifies gateway administration and allows organizations to provide alternate paths when multiple gateways are available.

Question 230

Which SIP method is used to cancel a pending request that has not yet completed?

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

Correct Answer: 4

Explanation

The SIP CANCEL method is used to terminate a pending request before it completes. A common example is canceling an unanswered INVITE while a call is still ringing. BYE is used to terminate an established dialog, REGISTER handles endpoint registration, and OPTIONS can query capabilities or availability. Understanding the distinction between CANCEL and BYE is important when analyzing SIP traces because they operate at different stages of call processing. When troubleshooting calls that stop ringing unexpectedly, administrators should inspect the INVITE transaction, provisional responses, CANCEL messages, and any subsequent responses to determine which device ended the pending call attempt.

Question 231

Which CUCM feature can transform a dialed number before the call is routed to its final destination?

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

Correct Answer: 1

Explanation

A Translation Pattern can transform a dialed number before CUCM continues call processing. Depending on the configuration, digits can be added, removed, or modified to meet enterprise or service-provider dialing requirements. Translation patterns are useful when users dial one format but the destination system requires another. Device pools provide shared endpoint settings, media resource groups organize media resources, and regions control codec and bandwidth relationships. When a call reaches the wrong destination or presents an unexpected number to an external network, administrators should inspect translation patterns, route patterns, partitions, CSS configuration, and other digit-manipulation settings.

Question 232

Which component provides a secure edge connection between external collaboration clients and internal collaboration services?

1. CUCM
2. Expressway
3. Unity Connection
4. Media Resource Group

Correct Answer: 2

Explanation

Cisco Expressway provides edge connectivity for supported collaboration deployments, including Mobile and Remote Access. In an MRA architecture, Expressway-E is positioned toward the external network while Expressway-C is located inside the enterprise environment. The Expressway pair creates controlled connectivity toward internal collaboration services without requiring remote clients to establish direct inbound connections to internal systems. CUCM handles call processing, Unity Connection provides voicemail, and media resource groups manage media resources. When troubleshooting remote access, administrators should inspect DNS, certificates, traversal zones, search rules, firewall policies, authentication, and CUCM integration.

Question 233

Which protocol can be used by Cisco collaboration systems for centralized directory integration?

1. RTP
2. LDAP
3. SRTP
4. NTP

Correct Answer: 2

Explanation

LDAP is commonly used to integrate Cisco collaboration systems with centralized enterprise directory services. It can provide synchronized user information and, depending on the deployment, support authentication against an external directory. RTP carries real-time media, SRTP secures RTP-based media, and NTP synchronizes clocks. LDAP integration can reduce administrative effort because user information is maintained centrally rather than manually entered into every collaboration platform. If directory searches, synchronization, or authentication are failing, administrators should verify LDAP server connectivity, credentials, filters, mappings, synchronization status, DNS, and firewall policies. Accurate directory integration improves consistency across collaboration services.

Question 234

Which media resource is designed to support multiparty audio conferencing?

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

Correct Answer: 3

Explanation

A Conference Bridge is a media resource designed to mix multiple audio streams so several participants can join the same conference. CUCM can use conference bridges as media resources when multiparty conferencing is required. A transcoder converts between codecs, an annunciator provides system-generated announcements, and Music on Hold provides audio while callers are placed on hold. Conference resources are commonly organized through Media Resource Groups and Media Resource Group Lists. If users cannot initiate or join conferences, administrators should verify conference bridge availability, registration, MRGL assignments, media-resource configuration, and endpoint access. Proper resource configuration ensures that conferencing requests receive an available bridge.

Question 235

Which DNS record is commonly used to map a hostname to an IPv4 address?

1. SRV
2. PTR
3. CNAME
4. A

Correct Answer: 4

Explanation

An A record maps a hostname to an IPv4 address. Cisco collaboration systems rely on accurate DNS information for service discovery, hostname resolution, certificate validation, and communication between components. SRV records identify services and their associated targets and ports, PTR records support reverse lookups, and CNAME records provide aliases. If collaboration components cannot resolve each other’s hostnames, administrators should verify the relevant A records, DNS server configuration, search domains, and network reachability. DNS problems can affect CUCM, Expressway, SIP trunks, and remote-access services, making accurate name resolution an important part of collaboration infrastructure design.

Question 236

Which Cisco feature groups media resources so that endpoints can be assigned controlled access to them?

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

Correct Answer: 1

Explanation

A Media Resource Group List, or MRGL, contains one or more Media Resource Groups and determines which media resources are available to a device or endpoint. Administrators can use MRGL assignments to control access to conference bridges, transcoders, annunciators, and other media resources. Route patterns and route lists are used for call routing, while Calling Search Spaces control access to dial-plan partitions. When an endpoint cannot access a required conference bridge or transcoder, administrators should verify the device’s MRGL, the referenced MRGs, and the registration status of the media resources. Proper MRGL planning supports predictable and controlled media-resource allocation.

Question 237

Which SIP response indicates that a server or service is temporarily unable to handle the request?

1. 503
2. 404
3. 486
4. 200

Correct Answer: 1

Explanation

SIP response code 503 Service Unavailable indicates that a server or service is temporarily unable to handle a request. It can appear when a SIP service is unavailable, overloaded, or unable to process the request at that moment. A 404 response indicates that a resource was not found, 486 commonly indicates a busy destination, and 200 indicates successful processing. When troubleshooting a 503 response, administrators should identify which system generated it and then inspect service status, SIP trunk connectivity, routing, DNS, resource availability, and intermediary devices such as CUBE. The complete signaling trace is useful for locating the source.

Question 238

Which CUCM configuration determines the ordered servers available for endpoint registration?

1. Region
2. CUCM Group
3. Partition
4. Route Group

Correct Answer: 2

Explanation

A CUCM Group defines an ordered list of CUCM servers that endpoints can use for registration and call processing. Device pools commonly reference CUCM Groups, allowing administrators to assign registration and redundancy policies to groups of endpoints. If the primary CUCM server becomes unavailable, the endpoint can use another configured server according to the group’s behavior. Regions control codec and bandwidth relationships, partitions organize dial-plan destinations, and route groups organize gateways. When troubleshooting registration failures or failover behavior, administrators should verify the device pool, CUCM Group order, server status, network connectivity, TFTP configuration, and endpoint registration state.

Question 239

Which protocol is specifically designed to provide secure RTP media?

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

Correct Answer: 3

Explanation

Secure Real-time Transport Protocol, or SRTP, provides security for RTP-based voice and video media. It adds encryption and integrity protection so real-time media is less vulnerable to interception or modification. SIP handles call signaling, TLS can secure signaling connections, and DHCP provides network configuration information. Secure collaboration deployments often use TLS for signaling and SRTP for media, with both components configured independently. When secure media is not established, administrators should verify endpoint capabilities, security settings, negotiated parameters, certificate-related requirements where applicable, and the media path. Understanding the role of SRTP helps distinguish media-security problems from signaling-security problems.

Question 240

Which CUCM feature provides a logical grouping of gateways that can be referenced by a route list?

1. Route Group
2. Device Pool
3. Region
4. Partition

Correct Answer: 1

Explanation

A Route Group provides a logical grouping of gateways that can be referenced by a CUCM Route List. It allows administrators to organize multiple gateways into a manageable routing structure and can support redundancy or alternate gateway selection. Route lists can contain one or more route groups and are typically selected by route patterns. Device pools provide common endpoint configuration, regions manage codec and bandwidth relationships, and partitions organize dial-plan destinations. When troubleshooting gateway selection, administrators should examine the route pattern, route list, route group, gateway status, and any configured routing preferences. This hierarchy provides a structured approach to enterprise outbound call routing.