H31-311 Online Practice Questions and Answers

When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.

A. MS-AIS

B. R-LOS

C. R-LOF

D. MS-RDI

LCK insertion has priority over AIS insertion. That is, if a user configures LCK insertion and the conditions of automatic AIS insertion are met, LCK is inserted.

A. TRUE

B. FALSE

Which of the following is not the advantage of WDM?

A. Ultra-large capacity and transparent data transmission

B. Easy to upgrade and maximizing the protection for existing investments

C. Completely substituting for SDH devices

D. Compatible with all optical switching networks in the future

When setting the LCAS mode, follow the following principles:

1.

If devices at the two ends are both Huawei devices, set them to the "Standard Mode".

2.

If a Huawei device is interconnected with a third-party device, set the interconnected devices to the same mode according to the mode supported by the third-party device.

A. TRUE

B. FALSE

Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?

A. n indicates the number of wavelengths carried by the maximum capacity.

B. m indicates the rate. The value can be 1, 2, or 3.

C. r indicates OTM without the OSC function.

D. OTM-nr.m with OSC signals is OTM-n.m.

When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?

A. 35G

B. 58.75G

C. 80G

D. 155G

In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.

A. 1/10

B. 1/20

C. 1/30

D. 1/40

Assume that 2 x VC-12 timeslots need to be bound with VCTRUNK1 of the N2EFS4 board. When 8 x VC4 timeslots are available on the N2EFS4 board, which of the following timeslots meets the requirements?

A. VC-12 timeslots 1 and 2 of the first VC-4

B. VC-12 timeslots 33 and 34 of the second

C. VC-4 VC-12 timeslots 1 and 2 of the fourth

D. VC-4 VC-12 timeslots 1 and 2 of the eighth VC-4

The backplane has two -48 V power supply cables, and each board obtains two -48 V power supplies from the backplane. After the power supplies are combined by diodes, various voltages required by each component are obtained through the DC/DC power module and linear conversion.

A. TRUE

B. FALSE

The interval between two adjacent pointer justification events is at least ( ) frames.

A. 5

B. 4

C. 3

D. 2