Excellent H31-311 Updated 2021 Dumps With 100% Exam Passing Guarantee
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Huawei H31-311 Exam Syllabus Topics:
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NEW QUESTION 23
The backplane has two -48 V power supply cables, and each board obtains two -48 V power supplies from the backplane. After the power supplies are combined by diodes, various voltages required by each component are obtained through the DC/DC power module and linear conversion.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 24
When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported?
(Multiple Choice)
- A. APSJNDI
- B. TU-AIS
- C. BD STATUS
- D. R-LOS
Answer: A,D
NEW QUESTION 25
In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 26
By default, the B2-EXC alarm is reported when the number of B2 bit errors exceeds the ( ) threshold.
- A. 0.01
- B. 0.000000001
- C. 0.001
- D. 0.00001
Answer: C
NEW QUESTION 27
Which of the following service levels cannot be selected during service configuration?
- A. VC3
- B. VC12
- C. VC4
- D. VC8
Answer: D
NEW QUESTION 28
The TAG attribute cannot be set for the internal port VCTRUNK of the board on the NMS.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 29
When the lower-order resources of a device are insufficient, which of the following measures can be taken?
(Multiple Choice)
- A. Configure VC4 services.
- B. Configure a VC4 server trail.
- C. Combine available lower-order resources.
- D. Use a cross-connect board with a larger lower-order cross-connect capacity.
Answer: A,C,D
NEW QUESTION 30
Only one TCM can be used at a site.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 31
An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted. Therefore, which of the following statements is correct?
- A. The LCAS function is enabled on the ports used by the Ethernet private line service between HI and H2.
- B. The LCAS function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
- C. The QinQ function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
- D. The QinQ function is enabled on the ports used by the Ethernet private line service between HI and H2.
Answer: B
NEW QUESTION 32
The last 256 columns in the OTN frame structure are FEC areas, which are used for forward error correction.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 33
Which of the following is the multiplexing mode of SDH?
- A. Flexible mapping
- B. Flexible mapping and synchronous multiplexing
- C. Asynchronous multiplexing
- D. Flexible mapping and asynchronous multiplexing
Answer: B
NEW QUESTION 34
When synchronization is performed on the 1U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 35
MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 36
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 37
Which of the following are different types of ESCs divided by implementation principles?
- A. None of the above
- B. Pilot tune DCC
- C. Fixed frame structure DCC
- D. Inserted DCC
Answer: C,D
NEW QUESTION 38
The rate of STM-1 is () bit/s.
- A. 9*270*1*8000
- B. 9*270*1*8000*16
- C. 9*270*4*8000
- D. 9*270*1*8000*8
Answer: D
NEW QUESTION 39
If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, the half-duplex and full-duplex modes may be interconnected.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 40
The interval between two adjacent pointer justification events is at least ( ) frames.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 41
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