HCIA-Transmission V2.5 (H31-311_V2.5) Practice Test

Questions # 61:

Optical module parameter "L-64.2" in "2" indicates which of the following working windows?

Options:

880 nm

1310 nm

1550nm

1610nm

Questions # 62:

Which of the following is not a condition that triggers multiplexed segment protection (MSP)?

Options:

MS-AIS signal was detected.

Au-AIS detected.

R-LOS detected.

Check to R-LOF.

Questions # 63:

Which of the following statements about the MD02 board is incorrect?

Options:

OTU4 or OTUC2 services can be received or transmitted on the WDM side.

100GE or OTU4 services can be received on the client side.

The board supports regeneration mode.

The board tunes WDM-side optical signals within the range of 120 wavelengths in Super C band at a 50 GHz spacing and supports flexible grid.

Questions # 64:

Self-healing refers to the capability of a network to automatically recover its services within a short period from a fault without any manual intervention. Users are unaware of the network fault. A network with this self-healing capability is a self-healing network.

Options:

TRUE

FALSE

Questions # 65:

Which of the following are key technologies in a WDM system?

Options:

Light source technologies

Optical amplifier technologies

Supervisory technologies

Optical multiplexing and demultiplexing technologies

Questions # 66:

Which factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent After the signal transmission in the WOM system is transmitted over a certain distance, the "oSNR" of the receiving end of the optical signal-to-noise ratio is reduced to a certain extent. Which of the following is the main cause?

Options:

Use EDFA. ).

Use of multi-density multiplexers and multiplexers.

Do not use new optical fibers.

Optical fiber attenuation is too high.

Questions # 67:

When configuring 1+1 optical line protection, you can select RI1/TO1 or RI2/T02 as the working channel according to the actual situation.

Options:

TRUE

FALSE

Questions # 68:

Which of the following is not an EVPLAN feature?

Options:

bandwidth sharing

Forwarding based on MAC address

point-to-point, and point-to-multipoint topologies

Multipoint to multipoint topology

Questions # 69:

Which of the following statements about extending the ECC is incorrect?

Options:

Extended ECC is divided into Auto Extended ECC and Extended ECC in specified mode.

Auto-expanding ECC means an Ethernet port that uses a pass-through cable to connect two network elements

Extended ECC in specified mode indicates that a server and client need to be specified.

You can enable auto-scaling ECC on up to four network elements. Under the Hand Extension

C overlay, each server can link up to three clients.

Questions # 70:

Transmitting test frames affects services.

Options:

TRUE

FALSE

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