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H31-311_V2.5 Exam Results

Page: 3 / 15
Total 198 questions

HCIA-Transmission V2.5 Questions and Answers

Question 9

The1310nm and 1550nm transmission windows are low loss windows. In DWDM systems, only the 1560m transfer window is used. Which of the following is the main cause?

Options:

A.

The EDFA operating wavelength flatness region is contained in this window.

B.

The nonlinear effect of the B.1550 nm-wavelength region is small.

C.

The 1550nm wavelength region is suitable for long-distance transmission.

D.

None of the above

Question 10

Which of the following is the steps to multiplex a low-speed service into a high-speed SDH service? (Multiple choice).

Options:

A.

Mapping

B.

Overhead insertion

C.

Alignment

D.

Multiplexing

Question 11

The receiver performs a BIP-8 check on unscrambled STM-16 frames. If the BIP8 check result XOR·∶, the value of the B1 byte contained in the next STM16 ring is 10001100, which indicates STM-16 There is a () bit False block in the axis.

Options:

A.

5

B.

3

C.

6

D.

is unclear

Question 12

If a network port that supports autonegotiation is connected to a network port that does not support autonegotiation, you can interconnect in both half-duplex and full-duplex modes.

Options:

A.

True

B.

False

Page: 3 / 15
Total 198 questions