350-801 practice questions 411–420

1. Question 411 · 450 in bank

   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?

   • A31.2 kbps
   • B38.4 kbps
   • C55.2 kbps
   • D87.2 kbps

   Show answer

   Answer: D

   Explanation

   All details match with G711 protocol, for which the calculation is : (160+(40+18))/160 x 64 =87.2 kbps https://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html Codec Information Bandwidth Calculations Codec & Bit Rate (Kbps) Codec Sample Size (Bytes) Codec Sample Interval (ms) Mean Opinion Score (MOS) Voice Payload Size (Bytes) Voice Payload Size (ms) Packets Per Second (PPS) Bandwidth MP or FRF.12 (Kbps) Bandwidth w/cRTP MP or FRF.12 (Kbps) Bandwidth Ethernet (Kbps) G.711 (64 Kbps) 80 Bytes 10 ms 4.1 160 Bytes 20 ms 50 82.8 Kbps 67.6 Kbps 87.2 Kbp

   Source: Adapted from community discussion — ciscogeek

   References

   • Cisco documentation

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2. Question 412 · 450 in bank

   Select 2

   Which two steps are required for bulk configuration transactions on the Cisco UCM database utilizing BAT? (Choose two.)

   • AA server template must be created in Cisco UCM.
   • BA data file in Extensible Markup Language format by uploaded to Cisco UCM.
   • CA data file in Abstract Syntax Notation One format by uploaded to Cisco UCM.
   • DA device template must be created in Cisco UCM.
   • EA data file in comma-separated values format must be uploaded to Cisco UCM.

   Show answer

   Answer: DE

   Explanation

   For bulk configuration transactions on the Cisco Unified Communications Manager database, the BAT process uses two components: a template for the device type and a data file in comma separated value (CSV) format that contains the unique values for configuring a new device or updating an existing record in the database. The CSV data file works in conjunction with the device template.

   Source: Adapted from community discussion — Panda_man

   References

   • Cisco documentation

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3. Question 413 · 450 in bank

   Select 2

   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.)

   • AEnable Settings Access under Product Specific Configuration Layout in Cisco UCM.
   • BEnable FIPS Mode under Product Specific Configuration Layout in Cisco UCM.
   • CEnable SSH Access under Product Specific Configuration Layout in Cisco UCM.
   • DSet a username and password under Secure Shell Information in Cisco UCM.
   • EDisable Web Access under Product Specific Configuration Layout in Cisco UCM.

   Show answer

   Answer: CD

   Explanation

   had done this in past on 89xx/99xx only two settings necessary. On phone configuration page: (Answer C) Product Specific Configuration Layout > SSH Access= Enabled (Answer D) Secure Shell Information > Secure Shell User + Secure Shell Password

   Source: Adapted from community discussion — DaKenjee

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4. Question 414 · 450 in bank

   A network administrator deleted a user from the LDAP directory of a company. The end user shows as Inactive LDAP Synchronized User in Cisco Unified Communications Manager. Which step is next to remove this user from Cisco Unified Communications Manager?

   • ADelete the user directly from Cisco Unified Communications Manager
   • BRestart the Dirsync service after the user is deleted from LDAP directory.
   • CExecute a manual sync to refresh the local database and delete the end user.
   • DWait 24 hours for the garbage collector to remove the user.

   Show answer

   Answer: D

   Explanation

   D is correct. Sure, other things will remove the user, of course, but if there's a garbage collector that removes the user automatically by design, why would you NEED to remove it manually? If you select a different answer, you need to ask yourself, "why"? The question asks which step is next to remove the user. It doesn't ask, "how do you bypass the garbage collector before it automatically deletes the user?".

   Source: Adapted from community discussion — Mert_kerna

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5. Question 415 · 450 in bank

   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?

   • AG.711alaw
   • BiLBC
   • CG.722.1
   • DG.729A

   Show answer

   Answer: B

   Explanation

   B. same document iLBC: iLBC provides audio quality between that of G.711 and G.729 at bit rates of 15.2 kbps (38-bytes or 20msec) and 13.3 kbps (50 bytes or 30 msec). iLBC handles lossy networks in better way than G729 because it treats each packet independently. G729 depends on the previous packet to handle packet loss, jitter and delay which doesn't tolerate well in lossy networks.

   Source: Adapted from community discussion — ring_phone

   References

   • Cisco documentation

   Next question

6. Question 416 · 450 in bank

   

   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?

   • ADTMF was negotiated properly in these messages.
   • BG.729 rather than G.711ulaw was negotiated.
   • CPayload type 110 was negotiated rather than type 101.
   • DDTMF was not negotiated on the call.

   Show answer

   Answer: D

   Explanation

   Correct answer is D. Look at the m=audio line in the invite, it sends 18 & 110. The same m=audio line in the 200 OK only has 18. No DTMF was successfully negotiated.

   Source: Adapted from community discussion — Testy1

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7. Question 417 · 450 in bank

   Select 2

   Which two types of device are supported by the Bulk Administration Tool? (Choose two.)

   • AH.322
   • BCisco Unified IP phones (all models)
   • CSIP trunks
   • DH.225 trunks
   • Emusic on hold servers

   Show answer

   Answer: AB

   Explanation

   Is A-H322 a typo? Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/bat/12_5_1/cucm_b_bulk-administration-guide-1251/cucm_b_bulk-administration-guide-1251_chapter_01.html You can use BAT to work with the following types of devices and records: Add, update, and delete Cisco Unified IP Phones including voice gateway (VG) phones, computer telephony interface (CTI) ports, and H.323 clients, and migrate phones from Skinny Client Control Protocol (SCCP) to Session Initiation Protocol (SIP)

   Source: Adapted from community discussion — jonycakes

   References

   • Cisco documentation

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8. Question 418 · 450 in bank

   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?

   • AG.729
   • BG.729 and G.711ulaw
   • CG.711ulaw and G.711alaw
   • DG.722

   Show answer

   Answer: A

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9. Question 419 · 450 in bank

   How can an administrator stop Cisco Unified Communications Manager from advertising the OPUS codec for recording enabled devices?

   • ARoute recorded calls through Cisco Unified Border Element because it does not support OPUS.
   • BGo to the phone's configuration page and set ג€Advertise OPUS Codecג€ to be ג€falseג€.
   • CIntegrate the Cisco Unified CM with 3 recording solution that does not support OPUS.
   • DIn CUCM Service Parameters set "Opus Codec Enabledג€ to ג€Enabled for all Devices Except Recording-Enabled Devices.ג€

   Show answer

   Answer: D

   Explanation

   Reference: https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/211297-Configure-Opus-Support- on-Cisco-Unified.pdf

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10. Question 420 · 450 in bank

    Select 2

    An engineer must manually provision a Cisco IP Phone 8845 using SIP. Which two fields must be configured for a successful provision? (Choose two.)

    • Alocation
    • Bmedia resources group list
    • CSIP profile
    • DCSS
    • Edevice security profile

    Show answer

    Answer: CE

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Keyboard:J Kmove between questionsA–Dselect an answerRshow or hide the answer← →change page

350-801 practice, question 411. 450 questions available.