H31-311 Certification Exam Dumps Questions in here [Nov-2021]
Updated H31-311 Exam Practice Test Questions
Huawei H31-311 Exam Syllabus Topics:
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NEW QUESTION 40
Which of the following statements about the EFS4 board are correct? (Multiple Choice)
- A. This board supports Layer-2 switching.
- B. The board interface an LC interface.
- C. This board has four FE ports.
- D. This board must be used together with a processing board.
Answer: A,C
NEW QUESTION 41
When a VLAN-based service type is configured, which of the following functions must be enabled on the port?
- A. Flow control
- B. Entry detection
- C. Auto-negotiation mode
- D. Broadcast packet suppression
Answer: B
NEW QUESTION 42
When severely errored seconds (SESs) are present in the PM section at the ODUk layer, which of the following alarms is reported on the NMS?
- A. ODUk _PM _UAS
- B. ODUk_PM_SES
- C. ODUk_PM_SESR
- D. ODUk_PM_ES
Answer: B
NEW QUESTION 43
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. Bicast address
- B. Unicast address
- C. Broadcast address
- D. Multicast address
Answer: D
NEW QUESTION 44
The frame period of OTN signals is fixed, which is the same as that of SDH signals.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 45
Optical supervisory channels are intended for the supervisory of WDM optical transmission systems. In ITU-T recommendations, 1510 nm wavelengths at a ( ) rate are preferentially used.
- A. 64 kbit/s
- B. 2Mbit/s
- C. 192 kbit/s
- D. 576 kbit/s
Answer: B
NEW QUESTION 46
Which of the following is the basic requirement of a DWDM system on a light source?
- A. The transmit power is high.
- B. The output wavelength is stable.
- C. The dispersion tolerance is low.
- D. The direct modulation method is used.
Answer: B
NEW QUESTION 47
Which of the following logical functional modules are involved in processing clock signal? (Multiple Choice)
- A. SPI
- B. RST
- C. MCF
- D. SETS
Answer: A,D
NEW QUESTION 48
The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?
- A. When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
- B. The encoding gain of AFEC is larger than that of FE
- C. The error correction capability of FEC increases with the encoding gain.
- D. The encoding gain of the inband FEC is larger than that of the outband FE
Answer: D
NEW QUESTION 49
During the service configuration between two adjacent sites (NE1 and NE2), if VC4:1 and VC12:l-3 are used on the NEl's line board connected to NE2, the same VC4 and VC12 timeslots must be used on the NE2's line board connected to NE1.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 50
After PDH services are configured on a per-NE basis, a complete trail cannot be searched out. Which of the following are possible causes? (Multiple Choice)
- A. Pass-through is not configured at intermediate sites.
- B. Timeslot configuration is incorrect.
- C. Tributary board selection is incorrect.
- D. Line board selection is incorrect.
Answer: A,B,D
NEW QUESTION 51
Assume that 2 x VC-12 timeslots need to be bound with VCTRUNK1 of the N2EFS4 board. When 8 x VC-4 timeslots are available on the N2EFS4 board, which of the following timeslots meets the requirements?
- A. VC-4 VC-12 timeslots 1 and 2 of the fourth
- B. VC-12 timeslots 33 and 34 of the second
- C. VC-4 VC-12 timeslots 1 and 2 of the eighth VC-4
- D. VC-12 timeslots 1 and 2 of the first VC-4
Answer: A
NEW QUESTION 52
The SL64 board can be used in an OSN 2500.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 53
Both PDH and SDH have globally unified standards.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 54
When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 55
A two-fiber ring topology consisting of three NEs is arranged in the counterclockwise sequence as A, B, and
C. Services between A and C occupy the 48th VC-12 timeslot in the first VC-4 on the short path, and services between B and C also occupy the 48th VC-12 timeslot in the first VC-4 on the short path. In this case, which of the following is the subnet type of the ring protection?
- A. All of the above
- B. Unidirectional path protection ring
- C. Bidirectional MSP ring r
- D. SNCP ring
Answer: C
NEW QUESTION 56
If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots implement automatic transparent transmission of overhead bytes, such as (),(), and (). This improves MSP switching performance and protects DCC communication with other NEs even if the SCC board on the local NE is offline. (Multiple Choice)
- A. E1 byte
- B. B1 byte
- C. K byte
- D. D byte
Answer: A,C,D
NEW QUESTION 57
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 58
For the (local) HA solution where the active and standby servers are deployed in the same place, which of the following platforms can be deployed? (Multiple Choice)
- A. All of the above
- B. Windows
- C. Solaris
- D. SUSE Linux
Answer: C,D
NEW QUESTION 59
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