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Huawei H31-311_V2.5 - HCIA-Transmission V2.5

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Total 246 questions

Establish Ethernet leased line service between HI (HQ) and H2 (branch) of enterprise H, and bind 5 in the corresponding VCTRUNK VC-12. When a VC-12 fails, the Ethernet dedicated line between H1 and H2 is interrupted. So, which of the following statements is true?

A.

enables the LXAS feature on the port used by the Ethernet Leased Line service between H1 and H2.

B.

Enable the LCAS feature on the VCTRUR port used by the Ethernet Leased Line service between H1 and H2. (Correct answer"

C.

Enable the QinQ feature on the ports used by H1 and H2 Division's Ethernet Leased Line service.

D.

Enable the QinQ function on the VCTRUNK port used by the Ethernet Leased Line service between H1 and H2:

When the fiber between node A and node B is disconnected, the RU on node B detects OTS_LOS alarm and will OTS_BDI The ru of the alert inserted into node A of node A forces reports OTS BDI alarms. The board reports och_SSF alarm on the downstream C node.

A.

True

B.

False

Array waveguide grating (AWG) multiplexer/multiplexer has the following advantages: short wavelength spacing, large number of channels and flat passband. Suitable for DWDM systems in ultra-high speed, large tubes.

A.

True

B.

False

When using the LCAS function, which of the following overhead bytes is used to transmit control information? (Multiple Choices)

A.

M1

B.

H4

C.

K2

D.

K4

The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.

A.

64

B.

128

C.

256

D.

512

Which of the following statements about the advantages of OTN are incorrect?

A.

WDM function is used to meet the requirements of the bait fiber Tbit/s bandwidth.

B.

OTN provides the final five levels of nested or overlapping TCM connection monitoring.

C.

OTN provides powerful out-of-band FEC functionality to effectively ensure line transmission performance.

D.

0TN provides 2.7 Gbi/s, 10.7Gbt/s, 43Gbt/s and even 111.8 Gbit/s high-speed interfaces.

Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?

A.

Current framework

B.

Next frame

C.

Previous frame

D.

None of the above

A standard Ethernet frame should not be shorter than 64 bytes, which is determined by the____and the collision detection used. (Enter only lowercase letters.)

Suppose 2 VC-12 time slots need to be bound to the VCTRUNK1 of the N2EFS4 board. When there are 8 VC4 slots on the N2EFS4 board, which of the following slots meets the requirements?

A.

VC-12 time slot 1 and 2 for the first VC4

B.

VC-12 time slots for the second VC4 33 and 34

C.

VC-12 time slots 1 and 2 for the fourth VC4

D.

VC-12 Time slots 1 and 2 for the 8th VC-4

Optical monitoring channel is used for monitoring of WDM optical transmission systems. In the UU-T recommendation, it is preferable to use a 1510 nm wavelength of the a ") rate.

A.

64 kbit/s

B.

192 kbit/st

C.

2 Mbit/s

D.

5676 kbit/s