Questions for the H11-879 were updated on : Dec 01 ,2025
Page 1 out of 8. Viewing questions 1-15 out of 106
Question 1
Which of the following files is necessary to deploy an automatic version upgrade of an eSpace IP phone? () Multiple choice
A. Version upgrade file B in Bin format.
B. Upgrade policy file
C. Address book
D. Log file
Answer:
A, B
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 2
There are two terminals, T1 and T2, both registered to the same GK. When T1 calls T2 by number, what is wrong with the following statement? () Multiple choice
A. The ACF message received by T1 contains the GK call signaling channel transmission address
B. The ACF message received by T1 contains the call signaling channel transmission address of T2
C. After T2 receives the Setup message, it sends an ARQ message to GK
D. After T2 receives the Setup message, it sends an ARQ message to T1
Answer:
A, D
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 3
The following are not part of the H.245 capability set ()
A. H.235
B. H.239
C. H.350
D. H.460
Answer:
C
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 4
The human eye is more sensitive to brightness than to color. () Correct or Wrong
A. Correct
B. Wrong
Answer:
A
User Votes:
A
50%
B
50%
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Question 5
The SMC2.0 batch number allocation function supports the addition, modification and deletion of unmanageable sites, excluding ISDN sites () Correct or Wrong
A. Correct
B. Wrong
Answer:
A
User Votes:
A
50%
B
50%
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Question 6
In the U1900 unified gateway, outgoing calls need to be configured in a certain order. The following configuration process is correct () Multiple choice
The SMC2.0 resource pool solution can improve the reliability of the videoconferencing system. If the MCU in use suddenly goes down during a conference, which of the following principles will SMC2.0 choose to use as a backup MCU? () Multiple choice
A. Same service area first
B. MCUs with the same prefix are preferred
C. The MCU with the most remaining resources in the same service area is preferred
D. Among all MCUs, the MCU with the most remaining resources is preferred
Answer:
A, B, C
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 8
If IP phone A fails to register with U1900, which of the following situations will not be the cause of the registration failure? ()
A. IP phone A has a network failure
B. The SIP server information in the configuration of IP phone A is incorrectly configured.
C. SIP account and password in IP phone A configuration are wrong
D. The user ID and phone number of IP phone A configured in the U1900 system are inconsistent
Answer:
D
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 9
Phone A has been successfully registered to the U1900 system. At some point, unplug the network cable. At this time, log in to the U1900 system to check the registration status of phone
A. The registration status of phone A in the U1900 system may change immediately
B. The registration status of phone A in the U1900 system may remain unchanged
C. The registration status of phone A in the U1900 system may change after a period of time
D. The registration status of phone A in the U1900 system is updated, only after the network cable of phone A is unplugged, the change occurs after half of the registration period of phone A has passed
Answer:
D
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 10
One MCU supports 24-port 1080P30. Which of the following conference scenarios can be supported through configuration? ()
A. 24 1080P30 venues
B. 12 1080P30 venues + 24 720P60 venues
C. 6 1080P30 venues + 24 720P30 venues
D. 12 1080P60 venues + 24 4CIF venues
Answer:
A, C
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 11
When the eSpace 7900 series phones are restored to factory settings, which of the following statements is correct is () multiple choice
A. Restoring factory settings will reset all phone parameters to default values
B. All information in contacts and call logs will be retained
C. Signal tones, language packs and personalized wallpapers imported by users will be retained
D. In the phone login interface, long press the home interface button to restore the factory settings
Answer:
A, D
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 12
The following description of the local regeneration function is wrong ()
A. The central node and the local node are interconnected through SIP relay
B. The heartbeat mechanism between the central node and the local node monitors the operating status of the peer device
C. Under normal circumstances, the IP phone of the local node is registered at the central node
D. The POTS phone of the local node is registered on the local node
Answer:
B
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 13
When other conditions are the same, the longer the reverberation time of the room, the clearer the sound heard Clarity. () Right or Wrong
A. Right
B. Wrong
Answer:
B
User Votes:
A
50%
B
50%
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Question 14
Regarding the IP phones and analog phones in the U1900 system, which of the following statements is correct ()
A. If you want to successfully register IP phones A and B to the U1900 system, the U1900 system must include the MTU board
B. When IP phones A and B have successfully registered to the same U1900 system, if IP phones A and B are able to dial each other, the U1900 system must include an MTU board
C. When IP phone A and B have successfully registered to the same U1900 system, if IP phone A calls When calling IP phone B, IP phone B is busy, then if you need IP phone A to hear busy Line tone, the U1900 must contain MTU board
D. If IP phone A and analog phone C (directly connected to the ASI board of U1900) are successfully registered to U1900, when A calls C, U1900 may not contain MTU board
Answer:
C
User Votes:
A
50%
B
50%
C
50%
D
50%
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Question 15
An enterprise has deployed eSight network management, DNS server and DHCP server on its existing network. For deploying 200 IP phones, which of the following methods cannot achieve batch configuration of TR069 parameters? ()
A. Configure the eSight domain name and IP address mapping in the DNS server
B. Batch delivery via DHCP Option 246 field
C. Use access scan
D. Through the web configuration interface of IP Phone