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

Questions 4

Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice) □

Options:

A.

High gain

B.

High output meritorious service

C.

Amplification of any wavelength

D.

Low noise index

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Questions 5

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 6

What are the basic features of the U2000? Multiple Choices

Options:

A.

Security management

B.

Topology management

C.

Alarm management

D.

Performance management

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Questions 7

Which of the following layers define the protocols that control the network layer? The protocol for this layer applies to logical links, i.e. end-to-end connectivity between two devices.

Options:

A.

Network layer

B.

Data link layer

C.

Transport Layer

D.

Application layer

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Questions 8

When the ACT indicator of the SDH board is off, it means that the board has a hardware failure and cannot be used.

Options:

A.

True

B.

False

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Questions 9

Which of the following statements about the EFS4 board are correct? (Multiple choice).

Options:

A.

The board has four FE ports. .

B.

The board supports three layers of text exchange. .

C.

The plate must be used with the processing plate.

D.

The board interface is the LC interface.

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Questions 10

EPL services use bandwidth exclusively on the line, which is very safe. Dedicated line applications for VIP customers

Options:

A.

True

B.

False

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Questions 11

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 12

Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?

Options:

A.

Cross-connecting unit

B.

Auxiliary unit

C.

Tributary units

D.

Line units

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Questions 13

According to ITU-T's recommendations, the requirement that the MSP switching time should be within 50ms is conditional. For example, the number of net elements on the entire ring network is less than 16.

Options:

A.

True

B.

False

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Questions 14

During service configuration, there are two time slot modes. Huawei uses interleaved time slot mode by default.

Options:

A.

True

B.

False

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Questions 15

The OTN signal has a fixed pad period, the same frame period as the SDH signal.

Options:

A.

True

B.

False

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Questions 16

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 17

In Recommendation ITU-T G.692, the allowable channel frequencies are based on the reference frequency (), and the channel spacing can be 100 GHz, 50 GHz or 25 GHz.

Options:

A.

192.1 Terahertz

B.

193.1 Terahertz

C.

1941 Terahertz

D.

196.1 Terahertz

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Questions 18

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 19

In WDM systems, it is ideal to use a dielectric thin problem filter (TFF) when using less than () wavelengths.

Options:

A.

4

B.

8

C.

16

D.

20

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Questions 20

Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice).

Options:

A.

980 nm

B.

1510nm

C.

1480nm

D.

1310nm

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Questions 21

In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and weight and usage information of the clock source?

Options:

A.

G1

B.

S1

C.

N1

D.

M1

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Questions 22

RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.

Options:

A.

True

B.

False

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Questions 23

Which of the following are device-level protection schemes for SDH products? (Multiple choice).

Options:

A.

Power protection

B.

Cross-connect and timer board protection

C.

System dashboard protection

D.

TPS protection

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Questions 24

Which of the following is the basic requirement of the DWDM system in the light source?

Options:

A.

output wavelength stabilization

B.

Use the direct modulation method

C.

Low dispersion tolerance.

D.

The launch function is very high

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Questions 25

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 26

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

Options:

A.

True

B.

False

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Questions 27

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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Questions 28

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.

False

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Questions 29

Compared with dense wavelength division multiplexing (DWDM) systems, crude glass division multiplexing (CWDM) systems provide a certain amount of glass length and transmission distance within (kmkm), which greatly reduces system cost and has strong flexibility

Options:

A.

50

B.

100

C.

200

D.

20

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Questions 30

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

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Questions 31

For MSPs, you need to set the MSP protocol ID for each NE. To ensure that each ID is unique, it is recommended to set the MSP protocol ID to the value that is compatible with the network element ID.

Options:

A.

True

B.

False

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Questions 32

SL64 board is available for OSN 2500.

Options:

A.

True

B.

False

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Questions 33

Which overhead below 112 is not ODUk overhead?

Options:

A.

PM

B.

Traditional Chinese Medicine

C.

NJO

D.

APs/PCc

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Questions 34

Manual configuration will clear the data on the NE side

Options:

A.

True

B.

False

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Questions 35

The SP3D board supports 63 E1 services

Options:

A.

True

B.

False

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Questions 36

The rate of STM-1 is ()bit/s.

Options:

A.

9*270*1*8000*8

B.

9*270*1*8000

C.

9*270*1'8000*16

D.

9*270*8000

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Questions 37

Which of the following is the maximum number of OSN3500 sub-racks that can be installed in a 2.2-meter cabinet?

Options:

A.

1

B.

2

C.

3

D.

4

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Questions 38

Which of the following alarm/event storage modes does U2000 support? (Multiple choice).

Options:

A.

Manual dumping

B.

Automatic pouring

C.

overflow does invert ()

D.

Dump the alarm log periodically

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Questions 39

The rate of SF64 and SL64 boards is STM54. Therefore, the two plates can be interconnected.

Options:

A.

True

B.

False

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Questions 40

output networks require higher costs than belt networks, but provide a more reliable management channel.

Options:

A.

True

B.

False

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Questions 41

Which of the following is the feature of TCM overhead in ODUk signals?

Options:

A.

Channel oversight fees

B.

Path trace identifier overhead

C.

In-line connection monitoring overhead

D.

General communications and communication overhead

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Questions 42

The segment overhead of STM-4 is () bytes/frame.

Options:

A.

9*9*4

B.

9*8"4

C.

9*9*8

D.

9*8

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Questions 43

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

Options:

A.

Current framework

B.

Next frame

C.

Previous frame

D.

None of the above

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Questions 44

OTM nr.m consists of up to n " multiplexed channels and does not support non-channel-related overhead. The letter "r" indicates a decrease in functionality.

Options:

A.

True

B.

False

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Questions 45

Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?

Options:

A.

ATS

B.

LCK

C.

IAE

D.

BDI

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Questions 46

If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed

Options:

A.

True

B.

False

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Questions 47

Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).

Options:

A.

Optical transponder unit

B.

Wavelength division multiplexing unit)

C.

optical amplifier unit

D.

Supervisory unit

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Questions 48

PRBS can be used to test that the SDH service is healthy and that the protection reversal function is working.

Options:

A.

True

B.

False

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Questions 49

Forced switching, fiber switching, manual switching and motion switching are decreased in order of priority.

Options:

A.

True

B.

False

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Questions 50

OChr means the use of electrical monitoring technology.

Options:

A.

True

B.

False

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Questions 51

When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?

Options:

A.

35G

B.

58.75G

C.

80G

D.

156 to pick up the answer

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Questions 52

Which of the following is photolayer tracking? (Multiple Choices)

Options:

A.

OCh

B.

OMS

C.

OTS

D.

osc

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Questions 53

What of the following operations may interrupt the network element service? (Multiple choice).

Options:

A.

search protects the subnet

B.

Look for trails

C.

Activate the trail

D.

Download the network metadata

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Questions 54

For osn3500, which of the following boards provides centralized backup capability for the +3.3V power supply of each board in the sub-shelf?

Options:

A.

PU

B.

AUX

C.

coA

D.

scc

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Questions 55

Which of the following bytes in the regenerator part overhead are associated with R-OOF and R-LOF? (Multiple Choices)

Options:

A.

A1

B.

A2 ()

C.

B1.

D.

B2

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Questions 56

Which of the following statements about the MST functional module is correct? (Multiple choice).

Options:

A.

MST is both the source and sink of MS. .

B.

MST implements BIP-8 statistical computation of B2 bytes.

C.

MST returns bit False messages, but does not return a specific number of bit Falses

D.

MST provides an E20 orderwire channel. .

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Questions 57

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 58

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

Options:

A.

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

B.

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

C.

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

D.

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

E.

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

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Questions 59

Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?

Options:

A.

Cross-connecting unit

B.

Auxiliary units

C.

Tributary units

D.

Line units

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Exam Code: H31-311_V2.5
Exam Name: HCIA-Transmission V2.5
Last Update: Dec 1, 2024
Questions: 198

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