100% Correct 400-051 Exam Questions and Answers 2021

NEW QUESTION 1
Which two Cisco Unified Communications Manager Express hunt group mechanisms keep track of the number of hops in call delivery decisions? (Choose two.)

• A. sequential
• B. peer
• C. longest idle
• D. parallel
• E. overlay
• F. linear

Answer: BC

NEW QUESTION 2
ACisco collaboration engineer is troubleshooting unexpected SIP call disconnects. Which three responses correspond to the 5xx range? (Choose three.)

• A. Temporarily Unavailable
• B. Version not supported
• C. Bad request
• D. Forbidden
• E. Server Timeout
• F. Service Unavailable

Answer: BEF

NEW QUESTION 3
Assume that a Cisco Unified Communication Manager IM & Presence environment is properly configured with database. How long is the archived data maintained?

• A. 12 months
• B. 36 months
• C. 24 months
• D. 60 months
• E. The maintenance period is dictated by the data purging policy of the external database administrator

Answer: E

NEW QUESTION 4
Refer to the exhibit.

A VOIP engineer must configure QoS for the switch ports to remap PC traffic to COS 2
while allowing Cisco phone COS values to be used on the network. Which three commands satisfy these requirements? (Choose three)

• A. FastEthernet 0/15 mls qos cos 2
• B. FastEthernet 0/15 No mls qos cos 4
• C. FastEthernet 0/15Switchport priority extend cos
• D. FastEthernet 0/15 mls qos cos override
• E. FastEthernet 0/15no mls qos cos override
• F. FastEthernet 0/15no mls qos trust device cisco-phone
• G. FastEthernet 0/15no switchport priority extend trust

Answer: AEG

NEW QUESTION 5
XMPP Protocol FEATURES(stream) []
STARTTLS [xmlns="urn:ietf:params:xnl:ns:xmpp-tls*] xmlns: urn:ietf:params:xml:ns:xmpp-tls
REQUIRED
Refer to the exhibit. Which message is used to negotiate the TLS requirement while federating with an external domain?

• A. xmpp-server message
• B. FEATURES message
• C. server hello
• D. STARTTLS message
• E. client hell

Answer: D

NEW QUESTION 6
ACisco Unified CM cluster is being set up for call control discover using the service advertising framework. An engineer discovers that patterns are not being learned by the cluster. Which two items must be checked in an attempt to resolve the issue? (Choose two)

• A. The CCD block patterns are not preventing remote patterns from being entered into the local cache.
• B. The hostedDN group on the cluster matches the patterns that should be learned.
• C. The CCD advertising service is activated in Cisco unified CM serviceability.
• D. ACCD route partition has been assigned for learned patterns.
• E. The CCD requesting service is activated in Cisco unified CM serviceability.
• F. The Sip trunk is enabled for call control discover.

Answer: AF

Explanation: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_0_2/ccmfeat/fsgd-802-cm/fscallcontroldis
After you configure call control discovery, you may block learned patterns that remote call-control entities send to the local Cisco Unified Communications Manager. (Call Routing > Call Control Discovery > Blocked Learned Patterns
Ensure that the CCD block patterns are not preventing remote patterns from being entered into the local cache.
The local Cisco Unified Communications Manager cluster uses SAF-enabled trunks that are assigned to the CCD requesting service to route outbound calls to remote call-control entities that use the SAF network.
The Cisco Unified Communications Manager cluster advertises the SAF-enabled trunks that are assigned to the CCD advertising service along with the range of hosted DNs; therefore, when a user from a remote
call-control entity makes an inbound call to a learned pattern on this Cisco Unified Communications Manager, this Cisco Unified Communications Manager receives the inbound call from this SAF-enabled trunk and routes the call to the correct DN.
Ensure that the Sip trunk is enabled for call control discover.

NEW QUESTION 7
The Information Technologies policy of your company mandates logging of all unsuccessful calls that resulted in reorder tone in Call Detail Records. Which option is the minimum Cisco Unified CM Service Parameter configuration that is needed to ensure compliance to this policy?

• A. Set CDR Enabled Flag to True.
• B. Set CDR Enabled Flag and CDR Log Calls with Zero Duration Flag to True.
• C. Set CDR Enabled Flag to True and set Call Diagnostics Enabled to Enable Only When CDR Enabled Flag is True.
• D. Set CDR Enabled Flag to True and set Call Diagnostics Enabled to Enable Regardless of CDR Enabled Flag.
• E. Leave CDR Enabled Flag and Call Diagnostics Enabled to their default settings.

Answer: A

NEW QUESTION 8
Refer to the exhibit.

Which three facts can be determined about the audio parameters of this call from this session description protocol? (Choose Three)

• A. The DTMF relay will be RFC2833
• B. The codec will be G711
• C. The codec will be G729
• D. VAD will be disabled for this call
• E. VAD will be enabled for this call
• F. The call will be a T38 fax call

Answer: ACD

NEW QUESTION 9
How does Call Detail Record Agent running on a Cisco Unified Communications Manager node determine if a CDR flat file is ready to be transferred to a designated CDR Repository node?

• A. The CDR Agent transfers all new CDR flat files upon receiving notification from the CDR Repository node on the name of last file successfully received
• B. The CDR Agent transfers all new CDR flat files generated after the last successful transfer
• C. The CDR Agent transfers any CDR flat file before its deletion
• D. The CDR Agent transfers all CDR flat files at a specific configurable time of day
• E. The CDR Agent knows transfer eligibility from the name of a CDR flat file name

Answer: E

NEW QUESTION 10
Refer to the exhibit.

A cisco collaboration engineer is troubleshooting a gateway and gatekeeper problem and sees this output from a debug command. Which two configuration can cause this problem? (Choose two)

• A. The same zone prefix is configured in two different gatekeepers
• B. The same H323-ID is configured in two different gateways
• C. The same gw-type-prefix is configured in two different zone subnets IDs
• D. The same zone subnet ID is configured in two different gatekeepers
• E. The same E164-ID is configured in two different gateways

Answer: BE

Explanation: This output from the debug h225 asn1 command shows a registration reject reason of duplicateAlias. RAS INCOMING PDU ::=
value RasMessage ::= registrationReject :
{
requestSeqNum 24
protocolIdentifier { 0 0 8 2250 0 3 } rejectReason duplicateAlias:
{
}
gatekeeperIdentifier {"gk"}
}
This is usually the result of the gateway registering a duplicate of an E164-ID or H323-ID: Another gateway has already been registered to the gatekeeper. If it is a duplicated E164-ID, change the destination pattern configured under a POTS dial-peer associated with an FXS port. If it is a duplicated H323-ID, change the gateway's H.323 ID under the H.323 VoIP interface.
http://www.cisco.com/c/en/us/support/docs/voice/h323/22378-gk-reg-issues.html#rr1

NEW QUESTION 11
Refer to the exhibit.

A customer has two Cisco Unified Communication manager 9.X clusters that serve the same location. An engineer has attempted to set up Enhanced Location call admission control so that any call within a site between phones on the two clusters do not decrement the available bandwidth to and from that site. However, the real time monitoring tool currently shows bandwidth being used from the site to Hub_none. When a call is placed between phones at the site, which action must be taken to correct this situation?

• A. The link between clusters must be a type of inter-cluster trunk instead of a sip trunk.
• B. The hub_none location must have a link configuration to the phantom location.
• C. The device pool names must match between clusters.
• D. The Hub_none location must have a link configured to the shadow location.
• E. The SIP trunks should be changed to use the shadow location.

Answer: E

NEW QUESTION 12
Which SIP request is used by a Cisco 9971 IP Phone to signal DND status changes to Cisco Unified Communications Manager?

• A. REGISTER
• B. NOTIFY
• C. INFO
• D. PUBLISH
• E. UPDATE

Answer: D

Explanation: Cisco Unified Communications Manager supports Do Not Disturb that a SIP device initiates or that a Cisco Unified Communications Manager device initiates. ADND status change gets signaled from a SIP device to Cisco Unified Communications Manager by using the SIP PUBLISH method (RFC3909). ADND status
change gets signaled from a Cisco Unified Communications Manager to a SIP device by using a dndupdate Remote-cc REFER request. Cisco Unified Communications Manager can also publish the Do Not Disturb status for a device, along with the busy and idle status for the device.
Reference: http://www.cisco.com/c/en/us/td/doc
s/voice_ip_comm/cucm/admin/6_1_1/ccmfeat/cmfsgd611/fsdnd.html

NEW QUESTION 13
Refer to the exhibit.

ACISCO collaboration engineer is troubleshooting a gateway and gatekeeper problem and sees this output from a debug command. Which two configurations can cause this problem? (Choose two)

• A. The same zone prefix is configured in two different gatekeepers.
• B. The same H323-ID is configured in two different gateways.
• C. The same gw-type-prefix is configured in two different zone subnets IDs.
• D. The same zone subnet ID is configured in two different gatekeepers.
• E. The same E164-ID is configured in two different gateways.

Answer: BE

NEW QUESTION 14
Refer to the exhibit.

A PSTN caller initiates an inbound call. Which two dial peers can be selected as inbound dial peers? (Choose two.)

• A. dial-peer voice 100 potsanswer-address [2-9]..[2-9]...$ voice-port 0/0/0:23
• B. dial-peer voice 200 potsdestination-pattern [2-9]..[2-9]..[2-9]...$ voice-port 0/1/0:15
• C. dial-peer voice 300 potsincoming called-number 704[2-9]...$ voice-port 0/1/0:15
• D. dial-peer voice 400 pots answer-address 672[2-9]...$ voice-port 0/0/0:15
• E. dial-peer voice 500 potsincoming called-number 6..[2345689]...$ voice-port 0/1/0:15

Answer: BE

NEW QUESTION 15
Refer to the exhibit.

In an effort to troubleshoot a caller ID delivery problem, a customer emailed you the voice port configuration on a Cisco IOS router. Which type of voice port is it?

• A. FXS
• B. E&M
• C. BRI
• D. FXO
• E. DID

Answer: D

Explanation: Configuring FXS and FXO Voice Ports to Support Caller ID
To configure caller-ID on FXS and FXO voice ports, use the following commands beginning in global configuration mode:
Command Purpose Step 1
Router(config)# caller-id enable
Enables caller ID. This command applies to FXS voice ports that send caller-ID information and to FXO ports that receive it. By default caller ID is disabled.
Note If the station-id or a caller-id alerting command is configured on the voice port, these automatically enable caller ID, and the caller-id enable command is not necessary.
Step 2
Router(config-voiceport)# station-id namename
Configures the station name on FXS voice ports connected to user telephone sets. This sets the caller-ID information for on-net calls originated by the FXS port. You can also configure the station name on an FXO port of a router for which incoming Caller ID from the PSTN subscriber line is expected. In this case, if no caller-ID information is included on the incoming PSTN call, the call recipient receives the information configured on the FXO port instead. If the PSTN subscriber line does provide caller-ID information, this information is used and the configured station name is ignored.
The name argument is a character string of 1 to 15 characters identifying the station.
Note This command applies only to caller-ID calls, not Automatic Number Identification (ANI) calls. ANI supplies calling number identification only.
Step 3
Router(config-voiceport)# station-id numbernumber
Configure the station number on FXS voice ports connected to user telephone sets. This sets the caller-ID information for on-net calls originated by the FXS port.
You can also configure the station number on an FXO port of a router for which incoming caller ID from the PSTN subscriber line is expected. In this case, if no caller-ID information is included on the incoming PSTN call, the call recipient receives the information configured on the FXO port instead. If the PSTN subscriber line does provide caller-ID information, this information is used and the configured station name is ignored.
If the caller-ID station number is not provided by either the incoming PSTN caller ID or by the station number configuration, the calling number included with the on-net routed call is determined by Cisco IOS software by using a reverse dial-peer search. In this case, the number is obtained by searching for a POTS dial-peer that refers to the voice-port and the destination-pattern number from that dial-peer is used.
Number is a string of 1 to 15 characters identifying the station telephone or extension number. Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2/voice/configuration/guide/fvvfax_c/vvfclid.html

NEW QUESTION 16
Which statement about system broadcast messages in Cisco Unity Connection is true?

• A. The user can skip a system broadcast message to listen to new messages first.
• B. The user can forward a system broadcast message only if it has been played in its entirety.
• C. System broadcast messages are synchronized between Cisco Unity Connection and Exchange when Single Inbox is configured.
• D. System broadcast messages do not trigger MWI.
• E. System broadcast messages are played immediately after users sign in and listen to message counts for new and saved messages.

Answer: D

Explanation: System broadcast messages are played immediately after users log on to Cisco Unity Connection by phone even before they hear message counts for new and saved messages. After logging on, users hear how many system broadcast messages they have and Connection begins playing them.

NEW QUESTION 17
Refer to the exhibit.

When enabling Group and Persistent Chat in an IM&P server, the administrator encountered the problem shown. Which two solutions resolve the issue? (Choose two)

• A. Configure the external database to listen in the correct port.
• B. Restart the Cisco Route Data store service in the IM&P server.
• C. Make sure the group chat system administrator has access.
• D. Configure a new host under Group Chat Server Alias.
• E. Fix the user permissions on the external database.

Answer: AE

NEW QUESTION 18
Refer to the exhibit.

An engineer is trying to provision CUCME with three 8841 phones. However all phone fail to register. Which two changes in the configuration would allow the phones to register? (Choose two)

• A. The registrar server command must be added under the voice register global configuration
• B. The IP address trusted authenticate command must be added under voice service voip
• C. The source-address command must be added under the voice register global configuration
• D. The local SIP proxy address must be configuration under the sip-ua configuration
• E. The registrar server command must be added under the sip section of voice service voip

Answer: CE

NEW QUESTION 19
A service provider wants to use a controller to automate the provisioning of service function chaining. Which two overlay technologies can be used with EVPN MP- BGP to create the service chains in the data centre? (Choose two.)

• A. VXLAN
• B. MPLSoGRE
• C. Provider Backbone Bridging EVPN
• D. 802.1Q
• E. MPLS L2VPN

Answer: AC