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

 

Question 181

Which CUCM feature determines which dial-plan partitions are accessible to a calling device?

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

Correct Answer: 3

Explanation

A Calling Search Space determines which partitions a device, line, or user can search when processing a call in Cisco Unified Communications Manager. Partitions contain destinations such as directory numbers, route patterns, and translation patterns. By controlling which partitions are included in a CSS, administrators can implement different calling privileges for different users or devices. Route groups organize gateways, regions control codec and bandwidth relationships, and device pools provide common configuration settings. When troubleshooting a destination that cannot be reached, administrators should verify the caller’s CSS and the partition assigned to the target. Proper CSS configuration provides predictable and controlled dial-plan access.

Question 182

Which SIP message is used to establish a new call session?

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

Correct Answer: 1

Explanation

The SIP INVITE method is used to initiate a new communication session or modify an existing one. During call setup, an INVITE can contain SDP information describing the proposed audio or video media parameters. BYE is used to terminate an established session, REGISTER is used to register an endpoint with a SIP registrar, and OPTIONS can query capabilities or availability. When troubleshooting call setup, administrators should inspect the INVITE and subsequent responses to determine whether the request reached the intended destination and whether media negotiation succeeded. Understanding SIP methods is essential for interpreting signaling traces and locating failures during call establishment.

Question 183

Which CUCM component provides a logical grouping of gateways for call routing?

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

Correct Answer: 3

Explanation

A Route Group provides a logical grouping of gateways that CUCM can use during call routing. Multiple gateways can belong to a route group, allowing administrators to create primary and alternate routing paths. Route lists can then reference route groups and provide an ordered routing strategy. Partitions control dial-plan visibility, device pools provide common endpoint configuration, and regions influence codec and bandwidth relationships. When outbound calls fail or use an unexpected gateway, administrators should verify the route pattern, route list, route group, gateway status, and digit manipulation settings. Proper route-group configuration supports organized gateway management and can improve redundancy in enterprise voice deployments.

Question 184

Which technology protects RTP-based media with encryption and integrity mechanisms?

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

Correct Answer: 2

Explanation

Secure Real-time Transport Protocol, or SRTP, protects RTP-based audio and video media by providing encryption and integrity protection. It is specifically designed for real-time media and helps prevent unauthorized interception or modification of media packets. TLS is commonly used to protect signaling, SIP provides session signaling, and LDAP provides directory services. Successful SRTP operation depends on compatible endpoints and proper security negotiation. When troubleshooting secure media, administrators should inspect endpoint capabilities, security profiles, negotiated media parameters, and the RTP path. It is important to distinguish SRTP from TLS because they protect different parts of a collaboration session.

Question 185

Which CUCM configuration provides common settings to a collection of endpoints?

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

Correct Answer: 1

Explanation

A Device Pool provides common configuration settings to multiple endpoints in CUCM. Depending on the deployment, these settings can include the CUCM Group, region, date/time group, SRST reference, and other shared parameters. Device pools make large deployments easier to manage because administrators can apply consistent settings to devices with similar requirements. Translation patterns modify numbers, partitions organize dial-plan destinations, and route patterns define digit-matching rules. When multiple endpoints at a site have similar behavior, administrators should review their device-pool assignment and configuration. Proper device-pool planning improves consistency and simplifies changes across large Cisco collaboration environments.

Question 186

Which protocol carries real-time audio and video after session signaling has completed?

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

Correct Answer: 3

Explanation

Real-time Transport Protocol, or RTP, carries real-time audio and video after the signaling process establishes a session. RTP includes sequence numbers and timestamps that support proper media ordering and timing. DNS provides name resolution, LDAP provides directory services, and NTP synchronizes system clocks. RTP traffic is sensitive to packet loss, delay, and jitter, so QoS and appropriate network design are important for collaboration environments. If a call establishes but users experience one-way audio or poor media quality, administrators should investigate the RTP path, firewall rules, NAT behavior, routing, codec negotiation, and endpoint configuration independently from the SIP signaling path.

Question 187

Which Cisco platform provides enterprise voicemail functionality?

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

Correct Answer: 3

Explanation

Cisco Unity Connection provides enterprise voicemail functionality for supported Cisco collaboration deployments. It manages user mailboxes, greetings, message storage, call handlers, notifications, and voicemail access. CUCM integrates with Unity Connection so unanswered or busy calls can be redirected to the appropriate mailbox. CUBE provides SIP border functionality, Expressway provides edge connectivity, and IM and Presence provides messaging and presence. If voicemail is not working, administrators should inspect CUCM voicemail configuration, ports, call routing, Unity Connection mailbox settings, integration status, and network connectivity. Proper configuration ensures that users can receive and retrieve voicemail reliably.

Question 188

Which DNS record type can be used to advertise the location of a network service?

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

Correct Answer: 2

Explanation

An SRV record identifies the location of a specific network service by providing information such as the target hostname and port. Cisco collaboration environments can use SRV records for service discovery and connection processes. A records map hostnames to IPv4 addresses, PTR records support reverse DNS lookups, and CNAME records provide aliases. If an endpoint cannot discover a collaboration service, administrators should verify the SRV record, associated host records, DNS server reachability, and the advertised service details. Correct DNS configuration is particularly important for distributed collaboration systems and remote-access deployments where clients must automatically locate the appropriate services.

Question 189

Which CUCM feature can change the digits of a number before further routing occurs?

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

Correct Answer: 3

Explanation

A Translation Pattern can modify a dialed number before CUCM continues processing the call. It can be used to add, remove, or transform digits so that the resulting number matches the requirements of another system, gateway, or service provider. Route groups organize gateways, regions influence codec and bandwidth settings, and device pools provide shared endpoint configuration. When troubleshooting incorrect number formats, administrators should inspect translation patterns along with partitions, Calling Search Spaces, route patterns, and other digit-manipulation settings. A well-designed transformation strategy helps maintain consistent enterprise dialing while ensuring that external systems receive numbers in the required format.

Question 190

Which CUCM component groups media resources such as conference bridges and transcoders?

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

Correct Answer: 1

Explanation

A Media Resource Group, or MRG, logically groups media resources such as conference bridges, transcoders, and music-on-hold resources. MRGs can then be included in Media Resource Group Lists that determine which resources are available to devices. Route lists organize gateway-routing paths, Calling Search Spaces control access to partitions, and partitions organize dial-plan destinations. If an endpoint cannot access a conference bridge or transcoder, administrators should verify its assigned MRGL, the associated MRG, and the operational status of the media resource. Proper grouping makes media-resource administration easier and provides better control over which endpoints can use particular collaboration services.

Question 191

Which SIP response code generally indicates successful processing of a request?

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

Correct Answer: 4

Explanation

SIP response code 200 indicates that the requested operation was successfully processed. A common example is a 200 OK response to an INVITE when the called party accepts the session. Response 404 indicates that a requested resource was not found, 503 indicates service unavailability, and 486 commonly indicates that the destination is busy. During troubleshooting, administrators should examine the complete SIP message sequence because the final response alone may not reveal the original cause of a failed call. Understanding SIP status-code classes and common responses helps administrators interpret signaling traces and identify whether a problem involves routing, availability, authentication, or another condition.

Question 192

Which Cisco technology provides backup call processing when phones lose connectivity to centralized CUCM?

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

Correct Answer: 2

Explanation

Survivable Remote Site Telephony, or SRST, provides backup call-processing capabilities for supported Cisco IP phones when connectivity to centralized CUCM servers is lost. SRST is commonly implemented on a Cisco router at the remote site. During normal operation, phones register with CUCM, while SRST provides fallback functionality during WAN or centralized-service outages. DNS provides name resolution, LDAP provides directory integration, and CDP provides neighbor discovery. Administrators should configure an appropriate SRST reference in CUCM and verify the router’s SRST configuration. Testing failover is important to confirm that phones transition successfully and that essential calling functions remain available during an outage.

Question 193

Which protocol is commonly used to secure SIP signaling between collaboration systems?

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

Correct Answer: 1

Explanation

Transport Layer Security, or TLS, is commonly used to secure SIP signaling between supported collaboration systems. TLS encrypts signaling traffic and can authenticate communicating systems through digital certificates and trusted certificate authorities. RTP transports media, DHCP provides network configuration, and SRTP protects real-time media. Secure SIP deployments require appropriate security profiles, valid certificates, correct hostnames, trusted certificate chains, and accurate system time. When TLS signaling fails, administrators should inspect certificate validity, expiration dates, trust relationships, hostname matching, and network connectivity. Separating TLS from SRTP is important because signaling security and media security are handled through different mechanisms.

Question 194

Which CUCM configuration controls codec preference and bandwidth relationships between endpoint groups?

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

Correct Answer: 3

Explanation

Regions control codec preferences and bandwidth relationships between groups of devices in CUCM. Administrators can configure region-to-region relationships to influence codec selection and limit the bandwidth used for audio and video calls. This is especially useful when collaboration traffic crosses WAN links with limited capacity. Partitions organize dial-plan destinations, route groups organize gateways, and device pools provide common endpoint settings. When users report unexpected codec selection or excessive WAN usage, administrators should inspect the regions assigned to the endpoints and the configured region relationships. Proper region planning helps balance media quality with available network capacity.

Question 195

Which protocol can automatically provide IP configuration to Cisco IP phones?

1. SIP
2. RTP
3. DHCP
4. NTP

Correct Answer: 3

Explanation

Dynamic Host Configuration Protocol, or DHCP, automatically provides IP configuration information to Cisco IP phones. DHCP can supply an IP address, subnet mask, default gateway, DNS servers, and other information needed for endpoint provisioning. SIP handles signaling, RTP carries media, and NTP synchronizes time. Cisco IP phones can also use DHCP options to discover the appropriate TFTP server during the provisioning process. If a phone cannot obtain an address or configuration, administrators should check the DHCP scope, voice VLAN, DHCP relay, DHCP options, network connectivity, and TFTP reachability. Correct DHCP configuration simplifies large-scale phone deployment and reduces manual network configuration.

Question 196

Which Expressway component is normally located inside the enterprise network in an MRA deployment?

1. Expressway-C
2. Expressway-E
3. CUBE
4. TFTP

Correct Answer: 1

Explanation

Expressway-C is normally positioned inside the enterprise network in a Mobile and Remote Access deployment. It communicates with Expressway-E through a secure traversal relationship and connects toward internal collaboration systems such as CUCM. Expressway-E is placed at the network edge and handles external-facing connectivity. CUBE provides SIP border functions and TFTP supports endpoint configuration. When troubleshooting MRA, administrators should verify traversal-zone configuration, certificates, DNS discovery, search rules, authentication, firewall policies, and CUCM integration. Proper Expressway-C placement helps maintain separation between external access and internal collaboration resources while allowing supported remote clients to access enterprise services.

Question 197

Which CUCM object defines an ordered collection of route groups?

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

Correct Answer: 3

Explanation

A Route List defines an ordered collection of route groups for CUCM call routing. This allows administrators to specify primary and alternate gateway paths and provides flexibility when multiple gateways are available. Route patterns can direct matching calls toward a route list, while route groups contain the actual gateways. Device pools provide shared endpoint configuration, and media resource groups organize media resources. When an outbound call follows an unexpected path, administrators should trace the routing process from the dialed digits through the route pattern, partition, Calling Search Space, route list, route group, and gateway. Understanding this hierarchy simplifies dial-plan troubleshooting and redundancy design.

Question 198

Which Cisco service provides instant messaging and presence capabilities?

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

Correct Answer: 3

Explanation

Cisco IM and Presence provides instant messaging and presence capabilities in supported collaboration environments. Presence allows users to view availability states, while instant messaging provides real-time text communication. Unity Connection provides voicemail, CUBE provides SIP border functions, and Expressway-E provides edge connectivity. IM and Presence can integrate with CUCM and directory services to support user information and presence publication. If users cannot exchange messages or see accurate presence information, administrators should check service status, CUCM integration, user configuration, authentication, directory synchronization, and network connectivity. Proper integration is necessary for reliable presence publication, subscription, and instant messaging.

Question 199

Which SIP response indicates that the requested service is unavailable?

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

Correct Answer: 1

Explanation

SIP response code 503 indicates that the requested service is currently unavailable. This can occur when a SIP server or intermediary cannot provide the required service at that time. A 404 response indicates that the requested resource was not found, 200 indicates successful processing, and 486 generally indicates that the destination is busy. When a 503 response appears, administrators should investigate server availability, resource conditions, SIP trunk status, routing, DNS, and intermediary devices such as CUBE. Reviewing the complete SIP exchange can identify which system generated the response and whether the condition is caused by a temporary service issue or configuration problem.

Question 200

Which CUCM configuration determines the CUCM servers that an IP phone can use for registration?

1. Partition
2. Translation Pattern
3. CUCM Group
4. Route Group

Correct Answer: 3

Explanation

A CUCM Group defines the ordered list of CUCM servers that an IP phone can use for registration and call processing. Device pools commonly reference CUCM Groups so administrators can apply registration and redundancy settings to groups of endpoints. If the preferred CUCM server becomes unavailable, the phone can use another server according to the configured group and endpoint behavior. Partitions organize dial-plan destinations, translation patterns modify numbers, and route groups organize gateways. When troubleshooting registration or failover problems, administrators should verify the device pool, CUCM Group, server availability, TFTP configuration, DNS, and network connectivity. Proper CUCM Group configuration supports reliable registration and redundancy.