Huawei Huawei Certifications H31-311 Questions & Answers

• Question 151:

  In the case of 1+1 linear MSP, which of the following switching modes do not require the enabling of the APS protection protocol? (Multiple Choice)

  A. Single-ended revertive mode

  B. Single-ended non-revertive mode

  C. Dual-ended revertive mode

  D. Dual-ended non-revertive mode

  Correct Answer: AB

• Question 152:

  WDM multiplexes the optical signals at multiple rates (wavelengths) over one fiber for transmission. The digital signals carried by these optical signals must have the same rate and data format.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 153:

  When setting the LCAS mode, follow the following principles:

  1.

  If devices at the two ends are both Huawei devices, set them to the "Standard Mode".

  2.

  If a Huawei device is interconnected with a third-party device, set the interconnected devices to the same mode according to the mode supported by the third-party device.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 154:

  Which of the following is the frame structure of STM-16?

  A. 9*270*1

  B. 9*270*4

  C. 9*270*16

  D. 9*270*64

  Correct Answer: C

• Question 155:

  A MAC address consists of 48 bits and is globally unique. Which of the following is the meaning of the MAC address whose eighth bit is 1?

  A. Unicast address

  B. Bicast address

  C. Multicast address

  D. Broadcast address

  Correct Answer: C

• Question 156:

  Which of the following are communication quality alarms? (Multiple Choice)

  A. Optical port loopback

  B. No login of an NE user

  C. NE communication interruption

  D. Loss of optical signals

  Correct Answer: CD

• Question 157:

  When bit errors are detected in the B2 byte, which of the following alarms is reported by the peer end?

  A. MS-AIS

  B. RS-BBE

  C. MS-FEBBE D. MS-BBE

  Correct Answer: C

• Question 158:

  Only one TCM can be used at a site.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 159:

  LCK insertion has priority over AIS insertion. That is, if a user configures LCK insertion and the conditions of automatic AIS insertion are met, LCK is inserted.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 160:

  Which of the following bridges is used to forward data based on the MAC address and VLAN ID carried in data?

  A. 802.1a

  B. 802.1d

  C. 802.1q

  D. 802.11ab

  Correct Answer: C