[Nov-2021] Huawei H31-311-ENU Exam: Basic Questions With Answers
New 2021 Realistic Free Huawei H31-311-ENU Exam Dump Questions & Answer
NEW QUESTION 32
An unprotected chain consists of four NEs: NE1, NE2, NE3, and NE4. An end-to-end VC4 trail NE1-NE4 is created, and NE5 is added between NE2 and NE3 for capacity expansion. The original configuration remains unchanged, and no service is configured on NE5. In this case, the unprotected chain becomes NE1-NE2-NE5-NE3-NE4, and how many VC4 trails can be searched out?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 33
Which of the following is the frame structure of STM-16?
- A. 9*270*4
- B. 9*270*64
- C. 9*270*16
- D. 9*270*1
Answer: C
NEW QUESTION 34
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
Answer: A
NEW QUESTION 35
The frame structure of ODU4 is four times that of ODU1.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 36
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and usage information of clock sources?
- A. N1
- B. M1
- C. S1
- D. G1
Answer: C
NEW QUESTION 37
Which of the following are the main advantages of SDH? (Multiple Choice)
- A. Standard interfaces
- B. Synchronous multiplexing
- C. High compatibility
- D. Powerful OAM
Answer: A,B,C,D
NEW QUESTION 38
Outband networking requires higher costs than in band networking, but provides more reliable management channels.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 39
The rate of STM-1 is ( ) bit/s.
- A. 9*270*1*8000
- B. 9*270*8000
- C. 9*270*1*8000*16
- D. 9*270*1*8000*8
Answer: D
NEW QUESTION 40
Which of the following operations may interrupt NE services? (Multiple Choice)
- A. Deactivating trails
- B. Searching for protection subnets
- C. Searching for trails
- D. Downloading NE data
Answer: A,D
NEW QUESTION 41
OTM nr.m consists of a maximum of "n" optical multiplexing channels and does not support non-channel-associated overheads. The letter "r" indicates function reduction.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 42
A 1510 nm optical supervisory channel can be effectively amplified after it passes an EDFA.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 43
Which of the following bytes in the regenerator section overhead are associated with R-OOF and R-LOF? (Multiple Choice)
- A. A2
- B. B1
- C. B2
- D. A1
Answer: A,D
NEW QUESTION 44
When bit errors are detected in the B2 byte, which of the following alarms is reported by the peer end?
- A. MS-FEBBE
- B. MS-AIS
- C. MS-BBE
- D. RS-BBE
Answer: A
NEW QUESTION 45
When a working PQ1 board is faulty, the device performs TFS protection switching.
Which of the following statements about the switching process are correct? (Multiple Choice)
- A. The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
- B. The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.
- C. The cross-connect board detects that the PQ1 board is faulty through the board status bus.
- D. If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
Answer: A,B,C,D
NEW QUESTION 46
Optical fiber loss includes the bending loss, absorption loss, and scattering loss.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 47
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 48
RSOH, MSOH, HPOH, and LPOH implement monitoring functions in the descending order of monitoring scope.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 49
The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 50
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