350-801 practice questions 11–20

1. Question 11 · 450 in bank

   

   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?

   • AThe payload for G.711ulaw must be 18.
   • BThe calling device did not offer a ptime value.
   • CThe media stream is set to sendonly.
   • DThe RTP port is set to 0.

   Show answer

   Answer: D

   Explanation

   The format of media announcement is as follows. m= The first sub-field is the media type. Currently defined media for TMedia is "audio". The second sub-field is the transport port to which the media stream will be sent. In Smart Media we don't specify it in Profile SDP Description and therefore you should insert "0".

   Source: Adapted from community discussion — MKZ

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2. Question 12 · 450 in bank

   After an engineer runs the utils ntp status command on the Cisco Unified Communications Manager publisher, the stratum value is 16. Which issue can the Cisco Unified CM cluster experience?

   • AUnified CM sends an NTPv4 packet.
   • BDatabase replication is not synchronized on the Unified CM nodes.
   • CThe cluster loses access to port 124 at the firewall.
   • DThe date/time group on all phones defaults to the time zone of the engineer.

   Show answer

   Answer: B

   Explanation

   Correct answer is B: 16 is a invalid stratum value that means "this server is not considered a time provider". The stratum can be invalid for various reasons, the most common of which is that the "time provider not synchronized", the "configured source does not exist", or the "ntp server not running". CUCM can communicate with the NTP server on Port 123

   Source: Adapted from community discussion — mzougari

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3. Question 13 · 450 in bank

   An engineer encounters third-party devices that do not support Cisco Discovery Protocol. What must be configured on the network to allow device discovery?

   • ALACP
   • BTFTP
   • CLLDP
   • DSNMP

   Show answer

   Answer: C

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4. Question 14 · 450 in bank

   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?

   • AUDP 162
   • BTCP 80
   • CUDP 161
   • DTCP 161

   Show answer

   Answer: A

   Explanation

   UDP port 161 connects the SNMP Managers with SNMP Agents (i.e. polling) UDP port 162 is used when SNMP Agents send unsolicited traps to the SNMP Manager

   Source: Adapted from community discussion — RdTx

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5. Question 15 · 450 in bank

   Select 2

   Which two actions must be taken to provision a new device using the self-provisioning? (Choose two.)

   • AEnable the self-provisioning IVR in the Cisco UCM.
   • BImport the user profile to the corporate LDAP directory.
   • CLink the appropriate universal device template to the user profile.
   • DEnsure the user has a directory URI and a primary extension.
   • ELink the appropriate service profile to the provisioning template.

   Show answer

   Answer: AC

   Explanation

   It should be A and C by common sense, you do not need an URI. Self-Provisioning of a phone to a user needs: * an End user with a primary extension and a Feature Group Template * the Feature Group Template needs a User Profile * the User Profile needs a Universal Line and Universal Device Template finally to activate it you need a CTI route point and a configured IVR service to actually register it. HOWEVER, it looks like you dont actually NEED the IVR to technically fullfil the goal of self-registration, as users can use the URL based registration. but i am not 100% sure if you wont need the IVR anyways, even if you arent using it - the guide is not 100% clear on that https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/214228-configure-self-provisioning-feature-on-c.html

   Source: Adapted from community discussion — [Removed]

   References

   • Cisco documentation
   • Cisco documentation
   • Cisco documentation

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6. Question 16 · 450 in bank

   Which Cisco Collaboration Edge architecture product allows remote endpoints to leverage corporate on-premises Cisco Unified Communications infrastructure?

   • ACisco Umbrella
   • BCisco Unified Communications Mobile and Remote Access
   • CCisco VPN Client
   • DCisco Webex

   Show answer

   Answer: B

   Explanation

   Reference: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Collaboration/enterprise/12x/120/collbcvd/edge.html

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7. Question 17 · 450 in bank

   

   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?

   • APrimary Router IPv4 Address
   • BPrimary TFTP Server IPv4 Address (Option 150)
   • CPrimary Start IPv4 Address
   • DBootstrap Server IPv4 Address

   Show answer

   Answer: B

   Explanation

   The answer to the question is B. Primary TFTP Server IPv4 Address (Option 150). In a Cisco Unified Communications Manager (UCM) environment, the server that provides the configuration files to the endpoints is the TFTP (Trivial File Transfer Protocol) server. To configure DHCP service on the UCM, the engineer must specify the IP address of the TFTP server in the "Primary TFTP Server IPv4 Address" field, which is also referred to as "Option 150" in the DHCP protocol. Option A, "Primary Router IPv4 Address," is used to specify the IP address of the default gateway, which is used by the endpoint to reach other devices on the network. Option C, "Primary Start IPv4 Address," is used to specify the starting IP address of the DHCP address pool. Option D, "Bootstrap Server IPv4 Address," is used in some legacy protocols to specify the server that provides configuration files to the endpoint during the boot process, but it is not used in a modern Cisco UCM environment.

   Source: Adapted from community discussion — Testme1235

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8. Question 18 · 450 in bank

   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?

   • ACorrect the restriction policy settings.
   • BReboot the VCS server and attempt reregistration.
   • CUpload a new policy in VCS.
   • DChange the SIP trunk configuration.

   Show answer

   Answer: A

   Explanation

   Reference: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/articles/vcs_endpoint_registration_problems_kb_460.html

   References

   • Cisco documentation

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9. Question 19 · 450 in bank

   

   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?

   • Acodec g729br81
   • Bcodec g723ar63
   • Ccodec g726r32
   • Dcodec g711ulaw

   Show answer

   Answer: D

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10. Question 20 · 450 in bank

    

    Refer to the exhibit. Which codec should an engineer select for a call made between `Dallas-REG` & `Austin-REG`?

    • AG.729
    • BG.711
    • CMP4A-LATM
    • DOPUS

    Show answer

    Answer: B

    Explanation

    I believe B is the answer - G.711. The question is asking what codec should be used between Dallas and Austin. The Region configuration in this case only covers the relationship between Dallas and San Jose, which is set with a max bitrate of 24kbps. All other regions in this case are set to "Use System Default" and aren't configured under this region configuration. - I also believe we shouldn't assume connection to the other regions requires bandwidth preservation for audio calls, because it's not specified in the question. If the region configuration showed that the Austin region also required bandwidth preservation, then there wouldn't be an exact correct answer. If you'd choose opus, which can be set down to 6kbps, why wouldn't you just use choose G.729, which has a bitrate of 8kbps? - Because we want to keep quality as optimal as possible, while not exceeding the Maximum audio bitrate for the region in question, calls between Dallas and Austin will be using G.711 by default, and that's how it should stay.

    Source: Adapted from community discussion — Mert_kerna

    References

    • Cisco documentation

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350-801 practice, question 11. 450 questions available.