350-801: Implementing Cisco Collaboration Core Technologies (CLCOR) Part 2
Question #: 61
Topic #: 1
Refer to the exhibit.
A collaboration engineer needs to replace the original, single NTP server that was configured during the initial install of a Cisco UCM server. What is the first step to accomplish this task?
A. Stop the NTP service on Cisco UCM.
B. Enable NTP authentication for the new NTP server on Cisco UCM.
C. Restart the NTP service on Cisco UCM.
D. Delete the original NTP server from Cisco UCM.
Selected Answer: D
Question #: 62
Topic #: 1
Refer to the exhibit.
A collaboration engineer adds a redundant NTP server to an existing Cisco Collaboration solution. On the Cisco UCM OS Administration page, the new NTP server shows as `Not Accessible`. Which action resolves this issue?
A. Delete and re-add the new NTP server via the Cisco UCM command-line interface.
B. Start the NTP service on the new NTP server.
C. Configure the ג€reachג€ value as ג€377ג€ for the new NTP server.
D. Restart NTPD on the Cisco UCM server.
Selected Answer: B
Question #: 63
Topic #: 1
Which action is required for a firewall configuration on a Mobile and Remote Access through Cisco Expressway deployment?
A. The external firewall must allow these inbound connections to Expressway: SIP: TCP 5061: HTTPS: TCP 8443; XMPP: TCP 5222; Media: UDP 36002 to 59999.
B. The internal firewall must allow these inbound and outbound connections between Expressway-׀¡ and Expressway-E: SIP: HTTPS (tunneled over SSH between ׀¡ and E): TCP 2222: TCP 7001; Traversal Media: UDP 2776 to 2777 (or 36000 to 36011 for large VM/appliance); XMPP: TCP 7400.
C. Do not use a shared address for Expressway-E and Expressway-׀¡, as the firewall cannot distinguish between them. If static NAT for IP addressing on Expressway-E is used, ensure that any NAT operation on Expressway-׀¡ does not resolve the same traffic IP address. Shared NAT is not supported.
D. The traversal zone on Expressway-׀¡ points to Expressway-E through the peer address field on the traversal zone, which specifies the Expressway-E server address. For dual NIC deployments, set the Expressway-E address using an FQDN that resolves the IP address of the internal interface.
Selected Answer: A
Question #: 64
Topic #: 1
The IP phones at a customer site do not pick an IP address from the DHCP. An engineer must temporarily disable LLDP on all ports of the switch to leave only
CDP. Which two commands accomplish this task? (Choose two.)
A. Switch(config)# no lldp transmit
B. Switch# configure terminal
C. Switch# copy running-config startup-config
D. Switch(config)# no lldp run
E. Switch(config)# interface GigabitEthernet1/0/1
Selected Answer: BD
Question #: 65
Topic #: 1
To provide high-quality voice and take advantage of the full voice feature set, which two access layer switches provide support? (Choose two.)
A. Use multiple egress queues to provide priority queuing of RTP voice packet streams and the ability to classify or reclassify traffic and establish a network trust boundary.
B. Deploy RSVP to improve VoIP QoS only where it can have a positive impact on quality and functionality where there is limited bandwidth and frequent network congestion.
C. Map audio and video streams of video calls (AF41 and AF42) to a class-based queue with weighted random early detection.
D. Use 802.1Q trunking and 802.1p for proper treatment of Layer 2 CoS packet marking on ports with phones connected.
E. Implement IP RTP header compression on the serial interface to reduce the bandwidth required per voice call on point-to-point links.
Selected Answer: D
Question #: 66
Topic #: 1
A customer wants to conduct B2B video calls with a partner using an on-premises conferencing solution. Which two devices are needed to facilitate this request?
(Choose two.)
A. Expressway-C
B. MGCP gateway
C. Cisco Unified Border Element
D. Cisco TelePresence Management Suite
E. Expressway-E
Selected Answer: AE
Question #: 67
Topic #: 1
A company wants to provide remote users with access to its on-premises Cisco collaboration features. Which components are required to enable Cisco Mobile and Remote Access for the users?
A. Cisco Unified Border Element, Cisco IM and Presence Server, and Cisco Video Communication Server
B. Cisco Unified Border Element, Cisco UCM, and Cisco Video Communication Server
C. Cisco Expressway-E, Cisco Expressway-C, and Cisco UCM
D. Cisco Expressway-E, Cisco IM and Presence Server, and Cisco Video Communication Server
Selected Answer: C
Question #: 68
Topic #: 1
Refer to the exhibit.
Cisco Unified Border Element is attempting to establish a call with Subscriber 1, but the call fails. Cisco Unified Border Element then retries the same call with
Subscriber 2, and the call proceeds normally. Which action resolves the issue?
A. Verify that the Run On All Active Unified CM Nodes checkbox is enabled.
B. Verify that the correct calling search space is selected for the Inbound Calls section.
C. Verify that the Significant Digits field for Inbound Calls is set to All.
D. Verify that the PSTN Access checkbox is enabled.
Selected Answer: A
Question #: 69
Topic #: 1
Refer to the exhibit.
A collaboration engineer is configuring the Cisco UCM IM and Presence Service. Which two steps complete the configuration of the SIP trunk security profile?
(Choose two.)
A. Check the box to accept replaces header.
B. Check the box to allow charging header.
C. Check the box to enable application-level authorization.
D. Check the box to transmit security status.
E. Check the box to accept unsolicited notification.
Selected Answer: AE
Question #: 70
Topic #: 1
Refer to the exhibit.
An engineer is troubleshooting this video conference issue:
✑ A video call between a Cisco 9971 in Region1 and another Cisco 9971 in Region1 works.
✑ As soon as the Cisco 9971 in Region1 conferences in a Cisco 8945 in Region2, the Region1 endpoint cannot see the Region2 endpoint video.
What is the cause of this issue?
A. Cisco 8945 does not have a camera connected.
B. Maximum Audio Bit Rate must be increased.
C. Maximum Session Bit Rate for Video Calls is too low.
D. Maximum Session Bit Rate for Immersive Video Calls is too low.
Selected Answer: C
Question #: 71
Topic #: 1
If a phone needs to register with cucm1.cisco.com, which network service assists with the phone registration process?
A. SMTP
B. ICMP
C. DNS
D. SNMP
Selected Answer: B
Question #: 72
Topic #: 1
Which type of input is required when configuring a third-party SIP phone?
A. digest user
B. serial number
C. manufacturer
D. authorization code
Selected Answer: A
Question #: 73
Topic #: 1
An administrator configures Cisco UCM to use UDP for SIP signaling and finds that an endpoint cannot make calls. Which action resolves this issue?
A. Change the common phone profile.
B. Change the SIP dial rules.
C. Change the SIP profile.
D. Change the phone security profile.
Selected Answer: D
Question #: 74
Topic #: 1
An engineer implements a new Cisco UCM based telephony system per these requirements:
✑ The local Ethernet bandwidth is sized based on the total bandwidth per call.
✑ A G.736 codec is used.
✑ The bit rate is 64 kbps.
✑ The codec sample interval is 10 ms.
✑ The voice payload size is 160 bytes per 20 ms.
What should the size of the Ethernet bandwidth be per call?
A. 31.2 kbps
B. 38.4 kbps
C. 55.2 kbps
D. 87.2 kbps
Selected Answer: D
Question #: 75
Topic #: 1
Which two steps are required for bulk configuration transactions on the Cisco UCM database utilizing BAT? (Choose two.)
A. A server template must be created in Cisco UCM.
B. A data file in Extensible Markup Language format by uploaded to Cisco UCM.
C. A data file in Abstract Syntax Notation One format by uploaded to Cisco UCM.
D. A device template must be created in Cisco UCM.
E. A data file in comma-separated values format must be uploaded to Cisco UCM.
Selected Answer: DE
Question #: 76
Topic #: 1
A collaboration engineer troubleshoots issues with a Cisco IP Phone 7800 Series. The IPv4 address of the phone is reachable via ICMP and HTTP, and the phone is registered to Cisco UCM. However, the engineer cannot reach the CLI of the phone. Which two actions in Cisco UCM resolve the issue? (Choose two.)
A. Enable Settings Access under Product Specific Configuration Layout in Cisco UCM.
B. Enable FIPS Mode under Product Specific Configuration Layout in Cisco UCM.
C. Enable SSH Access under Product Specific Configuration Layout in Cisco UCM.
D. Set a username and password under Secure Shell Information in Cisco UCM.
E. Disable Web Access under Product Specific Configuration Layout in Cisco UCM.
Selected Answer: CD
Question #: 77
Topic #: 1
A remote office has a less-than-optimal WAN connection and experiences packet loss, delay, and jitter. Which VoIP codec should be used in this situation?
A. G.711alaw
B. iLBC
C. G.722.1
D. G.729A
Selected Answer: B
Question #: 78
Topic #: 1
Refer to the exhibit. The SDP offer/answer has been completed successfully but there is no DTMF when users press keys. What is the cause of the issue?
A. DTMF was negotiated properly in these messages.
B. G.729 rather than G.711ulaw was negotiated.
C. Payload type 110 was negotiated rather than type 101.
D. DTMF was not negotiated on the call.
Selected Answer: A
Question #: 79
Topic #: 1
Which two types of device are supported by the Bulk Administration Tool? (Choose two.)
A. H.322
B. Cisco Unified IP phones (all models)
C. SIP trunks
D. H.225 trunks
E. music on hold servers
Selected Answer: A
Question #: 80
Topic #: 1
You are adding regions in Cisco Unified Communications Manager. Which codec(s) are selected when a call is placed if you set up the max audio bit rate to use 8 kbps?
A. G.729
B. G.729 and G.711ulaw
C. G.711ulaw and G.711alaw
D. G.722
Selected Answer: A
Question #: 81
Topic #: 1
How can an administrator stop Cisco Unified Communications Manager from advertising the OPUS codec for recording enabled devices?
A. Route recorded calls through Cisco Unified Border Element because it does not support OPUS.
B. Go to the phone’s configuration page and set ג€Advertise OPUS Codecג€ to be ג€falseג€.
C. Integrate the Cisco Unified CM with 3 recording solution that does not support OPUS.
D. In CUCM Service Parameters set “Opus Codec Enabledג€ to ג€Enabled for all Devices Except Recording-Enabled Devices.ג€
Selected Answer: D
Question #: 82
Topic #: 1
An engineer must manually provision a Cisco IP Phone 8845 using SIP. Which two fields must be configured for a successful provision? (Choose two.)
A. location
B. media resources group list
C. SIP profile
D. CSS
E. device security profile
Selected Answer: CE
Question #: 83
Topic #: 1
Refer to the exhibit. When making a call to a MRA client, what are the combinations of protocol on each of the different sections A-B-C?
A. SIP TCP/TLS (A) + SIP TLS (B) + SIP TLS (C)
B. SIP TCP/TLS (A) + SIP TCP/TLS (B) + SIP TCP/TLS (C)
C. IP TCP/TLS (A) + SIP TCP/TLS (B) + SIP TLS (C)
D. SIP TLS (A) + SIP TLS (B) + SIP TLS (C)
Selected Answer: A
Question #: 84
Topic #: 1
An engineer is configuring a Cisco Unified Border Element to allow the video endpoints to negotiate without the Cisco Unified Border Element interfering in the process. What should the engineer configure on the Cisco Unified Border Element to support this process?
A. Configure codec transparent on the dial peers.
B. Configure a transcoder for video protocols.
C. Configure a hardcoded codec on the dial peers.
D. Configure pass-thru content sdp on the voice service.
Selected Answer: D
Question #: 85
Topic #: 1
Due to service provider restriction, Cisco UCM cannot send video in the SDP. Which two options on Cisco UCM are configured to suppress video in the SDP in outgoing invites? (Choose two.)
A. Set Video Bandwidth in the Region settings to 0.
B. Check the Send send-receive SDP in mid-call INVITE check box on the SIP trunk SIP profile.
C. Change the Video Capabilities dropdown on the endpoint to Disabled.
D. Add the audio forced command to voice service VoIP on the Cisco Unified Border Element.
E. Check the Retry Video Call as Audio on the SIP trunk.
Selected Answer: AE
Question #: 86
Topic #: 1
A Cisco IP Phone 7841 that is registered to a Cisco UCM with default configuration receives a call setup message. Which codec is negotiated when the SDP offer includes this line of text? m=audio 49181 RTP/AVP 0 8 97
A. G.711alaw
B. iLBC
C. G.722
D. G.711ulaw
Selected Answer: D
Question #: 87
Topic #: 1
Endpoint A is attempting to call endpoint B. Endpoint A only supports G.711ulaw with a packetization rate of 20 ms, and endpoint B supports packetization rate of
30 ms for G.711ulaw. Which two media resources are allocated to normalize packetization rates through transrating? (Choose two.)
A. software transcoder on Cisco UCM
B. hardware transcoder on Cisco IOS Software
C. software MTP on Cisco IOS Software
D. software MTP on Cisco UCM
E. hardware MTP on Cisco IOS Software
Selected Answer: DE
Question #: 88
Topic #: 1
An engineer with ID0123456789 is designing a new dial plan for a customer that has offices in several countries on four continents around the world. This client also wants to integrate with a Microsoft Lync backend. Which dial plan type does the engineer recommend?
A. H.323
B. SIP URI
C. E.164
D. TEHO
Selected Answer: C
Question #: 89
Topic #: 1
Refer to the exhibit. An engineer is troubleshooting a codec negotiation issue where both endpoints that are involved in the call support the codecs listed in the exhibit. Which audio codec is selected if a call between two endpoints in Region1 is placed?
A. G.722
B. G.729
C. G.711a
D. G.711u
Selected Answer: A
Question #: 90
Topic #: 1
Refer to the Exhibit. Which command is required to allow this media resource to handle Video Media streams?
A. codec pass-through
B. associate application Cisco Unified Border Element
C. maximum sessions hardware 50
D. video codec h264
Selected Answer: A
Question #: 91
Topic #: 1
Which two protocols are proxied over an Expressway-E/C pair when a MRA login including phone services is performed? (Choose two.)
A. SCCP
B. HTTPS
C. H.323
D. SRTP
E. SIP
Selected Answer: BE
Question #: 92
Topic #: 1
Which DTMF relay method configured on a SIP dial-peer will ensure that a media resource is not invoked by Unified CM for calls to UCCX IVRs?
A. sdtmf-relay h245-signal
B. dtmf-relay rtp-nte
C. dtmf-relay sip-notify
D. dtmf-relay sip-kpml
Selected Answer: D
Question #: 93
Topic #: 1
Which task is required when configuring self-provisioning for an end user in Cisco UCM?
A. Associate the end user to a SIP Profile
B. Enable Auto-Registration
C. Disable Auto-Registration
D. Associate the end user to the Standard CCM Super Users group
Selected Answer: B
Question #: 94
Topic #: 1
Which two steps should be taken to provision a phone after the Self-Provisioning feature was configured for end users? (Choose two.)
A. Dial the hunt pilot extension and associate the phone to an end user
B. Plug the phone into the network
C. Ask the Cisco UCM administrator to associate the phone to an end user
D. Enter settings menu on the phone and press *, *,#(star, star, pound)
E. Dial the self-provisioning IVR extension and associate the phone to an end user
Selected Answer: D
Question #: 95
Topic #: 1
An engineer is configuring IP telephony. The network relies on DHCP to provide TFTP server addresses to the endpoints. Policy requires the endpoints to receive two server addresses. Which DHCP option must be configured?
A. 66
B. 143
C. 150
D. 166
Selected Answer: C
Question #: 96
Topic #: 1
Refer to the exhibit. Which outgoing m-line SDP is sent to Cisco UCM after matching the appropriate dial peers via Cisco Unified Border Element?
A. m=audio 16550 RTP/AVP 0 8 18 a=rtpmap:0 PCMU/8000/1 a=rtpmap:8 PCMA/8000/1 a=rtpmap:18 G729/8000/1
B. m=audio 16550 RTP/AVP 18 0 a=rtpmap:0 PCMU/8000/1 a=rtpmap:18 G729/8000/1
C. m=audio 16550 RTP/AVP 8 0 18 a=rtpmap:0 PCMU/8000/1 a=rtpmap:8 PCMA/8000/1 a=rtpmap:18 G729/8000/1
D. m=audio 16550 RTP/AVP 18 0 a=rtpmap:8 PCMA/8000/1 a=rtpmap:0 PCMU/8000/1 a=rtpmap:18 G729/8000/1
Selected Answer: B
Question #: 97
Topic #: 1
An end user at a remote site is trying to initiate an Ad Hoc conference call to an end user at the main site. The conference bridge is configured to support G.711.
The remote user’s phone only supports G.729. The remote end user receives an error message on the phone: `Cannot Complete Conference Call.` What is the cause of the issue?
A. A software conference bridge is not assigned
B. The remote phone does not have the conference feature assigned
C. A Media Termination Point is missing
D. The transcoder resource is missing
Selected Answer: D
Question #: 98
Topic #: 1
Which transport protocol does the application layer protocol SNMP use?
A. XML
B. UDP
C. SIP
D. HTTP
Selected Answer: D
Question #: 99
Topic #: 1
When a remote office location is set up with limited bandwidth resources, which codec would allow the most voice calls with the limited bandwidth?
A. G.711
B. G.722
C. G.723
D. G.729
Selected Answer: D
Question #: 100
Topic #: 1
Refer to the exhibit. This INVITE is sent to an endpoint that only supports G.729. What must be done for this call to succeed?
A. Nothing: both sides support G.729.
B. Add a transcoder that supports G.711ulaw and G.729.
C. Add a media termination point that supports G.711ulaw and G.729.
D. Nothing: both sides support payload type 101.
Selected Answer: B
Question #: 101
Topic #: 1
Refer to the exhibit. Endpoint A calls endpoint B. What is the only audio codec that can be used for the call?
A. Telephone-event/8000
B. G7221/16000
C. PCMA/8000
D. G722/8000
Selected Answer: C
Question #: 102
Topic #: 1
Refer to the exhibit. When a UC Administrator is troubleshooting DTMF negotiated by this SIP INVITE, which two messages should be examined next to further troubleshoot the issue? (Choose two.)
A. REGISTER
B. UPDATE
C. PRACK
D. NOTIFY
E. SUBSCRIBE
Selected Answer: DE
Question #: 103
Topic #: 1
An engineer wants to manually deploy a Cisco Webex DX80 video endpoint to a remote user. Which type of provisioning is configured on the endpoint?
A. Cisco Unified Border Element
B. Cisco Meeting Server
C. Cisco Unity Connection
D. Edge
Selected Answer: D
Question #: 104
Topic #: 1
Refer to the exhibit. A call is failing to establish between two SIP Devices. The called device answers with this SDP. Which SDP parameter causes this issue?
A. The payload for G.711ulaw must be 18.
B. The calling device did not offer a ptime value.
C. The media stream is set to sendonly.
D. The RTP port is set to 0.
Selected Answer: D
Question #: 105
Topic #: 1
An engineer encounters third-party devices that do not support Cisco Discovery Protocol. What must be configured on the network to allow device discovery?
A. LACP
B. TFTP
C. LLDP
D. SNMP
Selected Answer: C
Question #: 106
Topic #: 1
On which protocol and port combination does Cisco Prime Collaboration receive notifications (Traps and InformRequests) from several network devices in the
Collaboration infrastructure for which it has requested notifications?
A. UDP 162
B. TCP 80
C. UDP 161
D. TCP 161
Selected Answer: A
Question #: 107
Topic #: 1
Which two actions must be taken to provision a new device using the self-provisioning? (Choose two.)
A. Enable the self-provisioning IVR in the Cisco UCM.
B. Import the user profile to the corporate LDAP directory.
C. Link the appropriate universal device template to the user profile.
D. Ensure the user has a directory URI and a primary extension.
E. Link the appropriate service profile to the provisioning template.
Selected Answer: AC
Question #: 108
Topic #: 1
Which Cisco Collaboration Edge architecture product allows remote endpoints to leverage corporate on-premises Cisco Unified Communications infrastructure?
A. Cisco Umbrella
B. Cisco Unified Communications Mobile and Remote Access
C. Cisco VPN Client
D. Cisco Webex
Selected Answer: B
Question #: 109
Topic #: 1
Refer to the exhibit. An engineer must configure DHCP service on the Cisco UCM. In which field must the engineer configure the server IP to provide the configuration files to the endpoints?
A. Primary Router IPv4 Address
B. Primary TFTP Server IPv4 Address (Option 150)
C. Primary Start IPv4 Address
D. Bootstrap Server IPv4 Address
Selected Answer: B
Question #: 110
Topic #: 1
An administrator installs a new Cisco TelePresence video endpoint and receives this error: `AOR is not permitted by Allow/Deny list.` Which action should be taken to resolve this problem?
A. Correct the restriction policy settings.
B. Reboot the VCS server and attempt reregistration.
C. Upload a new policy in VCS.
D. Change the SIP trunk configuration.
Selected Answer: A
Question #: 111
Topic #: 1
Refer to the exhibit. An administrator configures fax dial-peers on a Cisco IOS gateway and finds that faxes are not working correctly. Which change should be made to resolve this issue?
A. codec g729br81
B. codec g723ar63
C. codec g726r32
D. codec g711ulaw
Selected Answer: D
Question #: 112
Topic #: 1
Refer to the exhibit. Which codec should an engineer select for a call made between `Dallas-REG` & `Austin-REG`?
A. G.729
B. G.711
C. MP4A-LATM
D. OPUS
Selected Answer: A
Question #: 113
Topic #: 1
Refer to the exhibit. A customer wants the SIP 200 OK shown to advertise codecs in the following order:
✑ G.729
✑ G.711u
✑ G.711a
✑ G.723
G.728 –
After correcting the codec preferences, what should the audio payload show in the SIP Traces?
A. m=audio 0 RTP/AVP 0 8 18 4 15
B. m=audio 0 RTP/AVP 4 0 8 18 15
C. m=audio 0 RTP/AVP 0 18 8 4 15
D. m=audio 0 RTP/AVP 18 0 8 4 15
Selected Answer: D
Question #: 114
Topic #: 1
A network administrator with ID0123456789 has determined that a WAN link between two Cisco UCM clusters supports only 1 Mbps of bandwidth for voice traffic.
How many calls does this link support if G.711 as the audio codec is used?
A. 12
B. 13
C. 15
D. 16
Selected Answer: A
Question #: 115
Topic #: 1
Refer to the exhibit. In this Cisco UCM setup configured for EARLY OFFER, what is the codec preference line in the initial SIP INVITE SDP?
A. m=audio 16444 RTP/AVP 9 0 8 18 101
B. m=audio 16444 RTP/AVP 0 8 18 101
C. m=audio 16444 RTP/AVP 9 18 101
D. m=audio 16444 RTP/AVP 18 101
Selected Answer: D
Question #: 116
Topic #: 1
What is required for Cisco UCM to accept SIP calls with a URI in the format of `sip:2001@cucmpub.cisco.com`?
A. Change the Destination Address to a Fully Qualified Domain Name on the SIP trunk.
B. Set the SIPS URI Handling to True in CallManager Service Parameters.
C. Define Cluster Fully Qualified Domain Name under Servers in Cisco UCM.
D. Define Cluster Fully Qualified Domain Name in Enterprise Parameters.
Selected Answer: D
Question #: 117
Topic #: 1
An administrator installed a Cisco Unified IP 8831 Conference Phone that is failing to register. Which two actions should be taken to troubleshoot the problem?
(Choose two.)
A. Verify that the switch port of the phone is enabled.
B. Check the RJ-65 cable.
C. Verify that the phone’s network can access the option 150 server.
D. Verify that the RJ-11 cable is plugged into the PC port.
E. Disable HSRP on the access layer switch.
Selected Answer: AC
Question #: 118
Topic #: 1
A Cisco UCM administrator wants to enable the Self-Provisioning feature for end users. Which two prerequisites must be met first? (Choose two.)
A. End users must have a primary extension.
B. End users must be associated to a user profile or feature group template that includes a universal line template and universal device template.
C. End users must have a secondary extension.
D. End users must belong to Standard CCM Admin Users group, the Standard CCM End Users group, and the Standard CCM Self-Provisioning group.
E. Cisco Extended Functions service must be running.
Selected Answer: C
Question #: 119
Topic #: 1
An administrator executes the debug isdn q931 command while debugging a failed call. After a test call is placed, the logs return a disconnect cause code of 1.
What is the cause of this problem?
A. The dialed number is not assigned to an endpoint.
B. The destination number rejects the call.
C. The destination number is busy.
D. The media resource is unavailable.
Selected Answer: A
Question #: 120
Topic #: 1
Where in Cisco UCM are codec negotiations configured for endpoints?
A. under device profiles in device settings
B. in in-service parameters
C. in enterprise parameters
D. under regions using preference lists
Selected Answer: D
