H11-879 Online Practice Questions and Answers

Which of the following backup methods is not supported by VP9660 MCU? ()

A. Main control board backup

B. Power backup

C. IP/E1 line backup

D. Media/signaling board backup

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

In the remote disaster recovery scenario, when the master node (U1981) fails, POTS user A of a branch node (The branch site equipment is U1911). If you make an outgoing call to the local PSTN user B through the branch node, the network element through which the SIP signaling of the call passes is ().

A. U1911->Preparation U1981->U1911

B. Prepare U1981->U1911

C. U1911

D. U1911->Main U1981->Backup U1981->U1911

SMC2.0 added TE terminal search in a manageable way to 10%, unable to continue, possible reasons are () (multiple choice)

A. SNMP V2C read community name or SNMP V3 user encryption method is inconsistent

B. SNMP V2C read community name or SNMP V3 user password is inconsistent

C. Device SNMP is not enabled

D. API account or password issue

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

After the terminal initiates a call and sends an ARQ message to GK, it receives an ARJ message. The possible reason for the call rejection is () (multiple choice)

A. The called is offline

B. The called party refuses to answer

C. Insufficient call bandwidth

D. called busy

The human eye is more sensitive to brightness than to color. () Correct or Wrong

A. Correct

B. Wrong

The terminal performs a remote audio loopback, and the audio code stream is encoded and decoded by the remote audio module. () Correct or Wrong

A. Correct

B. Wrong

The AR router provides SIP signaling tracking function, which needs to be checked in the diagnostic view. () Correct or Wrong

A. Correct

B. Wrong

In the H.460 public and private network traversing dual SC networking, the communication between the terminal and Client GK follows the () protocol (Single choice)

A. H.460

B. H.323

C. H.460.18/19

D. Q.931