Huawei HCIA-Transmission V2.0 Exam (H31-311) Free Practice Test

Question 1

Which of the following is not the northbound interface provided by the U2000?

A. SNMP

B. Qx

C. CORBA

D. XML

Correct Answer: B

Question 2

Automatic laser shutdown (ALS); When no optical signal is received, the ALS function automatically shuts down the corresponding optical module. This function protects onsite maintenance personnel.

A. FALSE

B. TRUE

Correct Answer: B

Question 3

Which of the following are the service board types of MSTP devices? (Multiple Choice)

A. Interface board

B. Auxiliary board

C. Service processing board

D. Service processing board with interfaces

Correct Answer: A,C,D

Question 4

SDH signals must be scrambled before being transmitted over optical fibers. Which of the following bytes are not scrambled? (Multiple Choice)

A. A1

B. J1

C. A2

D. J0

Correct Answer: A,C,D

Question 5

Which of the following are VLAN classification methods? (Multiple Choice)

A. By MAC address

B. By port

C. By protocol

D. By subnet

Correct Answer: A,B,C,D

Question 6

When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.

A. HP_TIM

B. RS_TIM

C. HP_SLM

D. LP_TIM

Correct Answer: A

Question 7

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

A. FALSE

B. TRUE

Correct Answer: A

Question 8

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

A. FALSE

B. TRUE

Correct Answer: B

Question 9

Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)

A. The buses of the two cross-connect modules work independently and do not interfere with each other.

B. After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.

C. Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.

D. The source service board sends services to the active and standby cross-connect boards.

E. The sink service board can receive only the data from the active cross-connect board.

F. The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.

Correct Answer: A,C,D,F

Question 10

Which of the following operations may interrupt NE services? (Multiple Choice)

A. Searching for trails

B. Deactivating trails

C. Searching for protection subnets

D. Downloading NE data

Correct Answer: B,D

Question 11

The difference between a dispersion compensation fiber and a common fiber is that the dispersion compensation fiber has a negative dispersion coefficient at ( ).

A. 1310 nm

B. 1650 nm

C. 1550 nm

D. 800 nm

Correct Answer: C

Question 12

Configuring an EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring, the STP protocol must be enabled on the network to prevent broadcast storms.

A. FALSE

B. TRUE

Correct Answer: B

Question 13

The EPL service exclusively uses bandwidth on the line, which is highly secure. It is applicable to the private line application of VIP customers.

A. FALSE

B. TRUE

Correct Answer: B

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Huawei HCIA-Transmission V2.0 (H31-311) Free Practice Test