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HCNA-UC (Unified Communication) Certification Exam

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NEW QUESTION 1
The MTU resources are occupied when (). (Multiple Choice)

  • A. An IAD user makes an outgoing call through the PRA trunk.
  • B. A POTS user makes an outgoing call through the PRA trunk.
  • C. Calls occur between intra IP phone users.
  • D. The VU switchboard plays voice file

Answer: ABD

NEW QUESTION 2
Which of the following indicates a temporary SIP response?

  • A. 1xx
  • B. 2xx
  • C. 3xx
  • D. 6xx

Answer: A

NEW QUESTION 3
Which of the following statements about IAD configuration mode is INCORRECT?

  • A. Support the CUT configuration mode.
  • B. Support the WEB configuration mode.
  • C. Provide three accounts, root, system, and user in CLE configuration mode.
  • D. The root account for logging in to the web management system is different from the root account for logging in to the CLI.

Answer: D

NEW QUESTION 4
eSpace series IP phones support local conferences. eSpace 7910 and eSpace 7950 support a maximum of () and () participants in a local conference respectively.

  • A. 3, 3
  • B. 3, 6
  • C. 6, 6
  • D. 6, 12

Answer: C

NEW QUESTION 5
Fax machines can use PSTN to transmit signals. Fax machines can be classified into group 1, group 2, group 3, and group 4 fax machines by transmission speed and modulation mode.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 6
Which of the following statements are CORRECT about the narrowband trunk? (Multiple Choice)

  • A. The ATO is a type of narrowband trunk.
  • B. The SS7 can be configured at the user side or at the network side.
  • C. The PRA uses the 30B+D structure.
  • D. The R2 refers to CNo.1.

Answer: AC

NEW QUESTION 7
Which of the following statements are CORRECT about eSpace IP phone upgrade method? (Multiple Choice)

  • A. Unified upgrade on U1900 series unified gateway
  • B. Auto upgrade
  • C. Single Upgrade on eSight
  • D. Manual upgrade

Answer: BCD

NEW QUESTION 8
The eSpace IPT solution architecture consists of several layers including terminal access, call control, and service application layers. Which of the following components belongs to the call control layer?

  • A. IAD1224
  • B. U1960
  • C. eSpace 7910
  • D. eSpace 8950

Answer: B

NEW QUESTION 9
The site after a U1900 is installed is a common site.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 10
Which of the following does not bebng to the U1900 cabling specifications?

  • A. The PGND cable is grounded based on the nearby principle, and is properly connected to the ground bar.
  • B. The length of the PGND cable does not exceed 45 c
  • C. The PGND cable shall be as short as possible, and coiling is forbidde
  • D. If the length of the PGND cable exceeds 45 cm, relocate the ground bar.
  • E. The PGND cable shall not be in parallel or twisted with signal cables.
  • F. Signal and power cables are separated, and analog and digital signal cables are routed togethe

Answer: D

NEW QUESTION 11
If the TR069 parameter is delivered to IP phones in batches through the DHCP Option 246 field, the IP phones can obtain the eSight IP address and automatically request to access eSight.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 12
In the U1900 connecting to PSTN with the El trunk, the Tx and Rx indicators are off but the call service still fails. To locate the fault, which of the following operations are required? (Multiple Choice)

  • A. Perform the CRC check.
  • B. Check the position parameter.
  • C. Check the clock source.
  • D. Check the El cabl

Answer: AB

NEW QUESTION 13
To change the initial IP address of an IAD in web mode, connect the physical network of the PC to that of the IAD and set the IP address of the PC to the same network segment of the IP address of the IAD.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 14
When adding a SIP phone on U1900, you must ensure that ().

  • A. The configured EID must be the same as the phone number.
  • B. The EID can be digits only.
  • C. The phone number can be digits or a combination of the asterisk (*) and digits.
  • D. The EID is not require

Answer: C

NEW QUESTION 15
You can use the () to perform configuration on IAD? (Multiple Choice)

  • A. Web configuration interface
  • B. LMT
  • C. CLI
  • D. eSight

Answer: ACD

NEW QUESTION 16
Users with the () rights can make international toll calls in any time segment.

  • A. Default
  • B. Common
  • C. Advanced
  • D. Super

Answer: D

NEW QUESTION 17
IP phones can adapt to different networking modes, including UC2.X, UC2.0, IMS+UC, and IMS. Therefore, the networking mode needs to be set based on the actual networking. The default networking mode is UC2.X.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 18
Which of the following information is required when you apply for a license for the U1981? (Multiple Choice)

  • A. MAC address
  • B. ESN
  • C. Model
  • D. Version number

Answer: BCD

NEW QUESTION 19
eSpace IP phones support the () function that can provide the PC port link for the PC connection.

  • A. Route
  • B. Bridge
  • C. Switch
  • D. Console

Answer: B

NEW QUESTION 20
Which of the following statements are CORRECT about signaling functions of registers? (Multiple Choice)

  • A. Manage call setup and release
  • B. Transmit numbers
  • C. Priority-based congestion notification
  • D. Charging

Answer: BCD

NEW QUESTION 21
Faxes can be sent and received through Internet in transparent transmission orT.38 mode. The difference is that faxes are transmitted as voice packets over Internet in transparent transmission mode while as data packets over Internet in T.38 mode.

  • A. TRUE
  • B. FALSE

Answer: A

NEW QUESTION 22
Which of the following statements is INCORRECT about the QoS requirements for a VoIP network?

  • A. The packet loss rate should be less than 1%.
  • B. The average jitter should not exceed 30 ms.
  • C. The one-way delay should not exceed 300 ms.
  • D. Each call requires at least 21 kbit/s to 106 kbit/s bandwidth to ensure the voice qualit

Answer: C

NEW QUESTION 23
To ensure that on-holiday employees do not miss important calls, they are advised to enable the () service.

  • A. Instant hotline
  • B. Voice mailbox
  • C. Voice conference
  • D. Secretary service

Answer: B

NEW QUESTION 24
Which of the following indicates a server error in SIP protocol?

  • A. 3xx
  • B. 4xx
  • C. 5xx
  • D. 6xx

Answer: C

NEW QUESTION 25
Which of the following statements is CORRECT about the VU service of U1900?

  • A. Only the script provided by the system can be used for configuring the automatic switchboard.
  • B. The script for the automatic switchboard can be edited.
  • C. Greetings of the conferences through individual dialing-in cannot be customized.
  • D. A voice channel can store multiple voice file

Answer: B

NEW QUESTION 26
Which of the following functions are supported by "One Number Link You (ONLY)" service? (Multiple Choice)

  • A. Mobile office
  • B. A unified number that is easy to remember and use
  • C. The same calling number displayed
  • D. Number rights control

Answer: ABC

NEW QUESTION 27
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