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H31-311_V2.5 HCIA-Transmission V2.5 Questions and Answers

Questions 4

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:

A.

Use EDFA. ).

B.

Use of multi-density multiplexers and multiplexers.

C.

Do not use new optical fibers.

D.

Optical fiber attenuation is too high.

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Questions 5

Which of the following is the VLAN classification method? (Multiple choice).

Options:

A.

by MAC address correct answer).

B.

Through the port correct answer).

C.

By subnet

D.

press Co-set

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Questions 6

The STAT indicator of the SDH board flashes red, lights up for 100ms, and turns off for 100ms. Which of the following means the state of the metric?

Options:

A.

Hardware mismatch

B.

Hardware failure

C.

Normal operation

D.

There is no power input

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Questions 7

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.

Options:

A.

True

B.

Error

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Questions 8

Which of the following device domains can be managed by U2000? (Multiple choice).

Options:

A.

Transport equipment

B.

Wireless device

C.

Data communication device

D.

Access device

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Questions 9

Are the following statements regarding the definition of SDH correct?

Options:

A.

hierarchy that can be used for asynchronous digital transfers

B.

A hierarchy of standardized digital signals that can be asynchronously reused

C.

A hierarchy of standardized digital signals that can be cross-connected asynchronously

D.

Complete hierarchy of standard mathematical signals, providing simultaneous digital transmission multiplexing and cross-connectivity

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Questions 10

The AAC address consists of 46 bits and is globally unique

Which of the following - is the meaning of the eighth-digit MAC address with 1?

Options:

A.

unicast address

B.

Double-click the address

C.

Multicast address

D.

Broadcast address

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Questions 11

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

Options:

A.

64

B.

128

C.

256

D.

512

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Questions 12

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

Options:

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.

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Questions 13

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

Options:

A.

5

B.

4

C.

3

D.

2

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Questions 14

Manual configuration will clear the data on the NE side

Options:

A.

True

B.

Error

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Questions 15

The index is used to folio and delineate the starting position of VC-n in the corresponding AU or TU frame so that the receiving end can correctly remove the corresponding VC from the STM-N The VC and C packages are then separated into separate low-rate signals, such as PDH That is; Low-rate branch signals can be discarded directly from the STM-N signal

Options:

A.

True

B.

Error

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Questions 16

Which of the following logical function modules is used to generate exhaust R-LOS alerts?

Options:

A.

RST

B.

MST

C.

MSA

D.

SPI

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Questions 17

When the SNCP ring consisting of four Optis OSN 2500 devices has a rate of 25 Gbt/s, the network's service answer stars can carry up to ()2Mt/s Signal.

Options:

A.

504

B.

1008

C.

2016

D.

4032

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Questions 18

For 100G (112Gbit/s) signals, the actual data baud rate is only 28G amplitude.

Options:

A.

True

B.

Error

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Questions 19

Which of the following statements about the U2000 license is incorrect?

Options:

A.

Each license file corresponds to the device serial number (ESN) of one U2000 computer, so it can only be used on the corresponding computer.

B.

Official U2000 licenses vary by operating system platform. You must apply for a U2000 license based on your specific operating system. (Correct answer"

C.

The U2000 license file xxxxxxx is named .dat format

D.

Do not modify the license file. Otherwise, the license file will fail

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Questions 20

QinQ technology can be used when multiple users need to share the same VCTRUK and use the same VLAN ID.

Options:

A.

True

B.

Error

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Questions 21

Which of the following alerts does not trigger an AU-AIS alert?

Options:

A.

RLOS

B.

MS-AIS

C.

AU-LOP

D.

B2-ExC

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Questions 22

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

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Questions 23

PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.

Options:

A.

True

B.

Error

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Questions 24

On a Layer 2 switching device, if the Ethernet port is an Access port, the port can only receive Ethernet frames without a VLAN tag or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.

Options:

A.

True

B.

False

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Questions 25

Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.

Options:

A.

True

B.

Error

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Questions 26

A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.

Options:

A.

True

B.

Error

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Questions 27

MSP is a network-level protection scheme. MSF does not directly protect services, and MSP switching and recovery are not affected even if there is no service on the MSP ring.

Options:

A.

True

B.

Error

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Questions 28

Which of the following is not the advantage of WDM?

Options:

A.

Large capacity and transparent data transfer

B.

Easy to upgrade and maximize protection for existing investments

C.

gold replacement for SDH equipment

D.

Future compatible with all optical switching networks

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Questions 29

When the working PQ1 board is oversized, the device will perform and the TFS protection will be reversed. Which of the following statements about the switching process are correct? (Multiple choice).

Options:

A.

cross-connect board checks the PQ1 board fault through the board status bus. .

B.

If the protection PQ1 board is normal, the cross-connection board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus. .

C.

The D75S board responds to the switch message by transmitting the service to the shared protection bus and stopping sending the service to the tyrant PQ1 board

D.

The protection PQ1 board receives and processes the services transmitted from the D75S board to the protection bus to complete the protection switching

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Exam Code: H31-311_V2.5
Exam Name: HCIA-Transmission V2.5
Last Update: Mar 26, 2024
Questions: 199

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