Get New 2022 Valid Practice Huawei-certification H31-311-ENU Q&A - Testing Engine
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NEW QUESTION 46
Which of the following statements about the definition of SDH is correct?
- A. A hierarchy that can be used for asynchronous digital transmission
- B. A hierarchy of standardized digital signals that can be asynchronously cross-connected
- C. A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection
- D. A hierarchy of standardized digital signals that can be asynchronously multiplexed
Answer: C
NEW QUESTION 47
On the NMS, the NE performance monitoring time is set to ( ) minutes and ( ) hours.
- A. 30, 24
- B. 15, 24
- C. 30, 12
- D. 15, 12
Answer: B
NEW QUESTION 48
Which of the following are the device-level protection schemes of SDH products? (Multiple Choice)
- A. Power supply protection
- B. TPS protection
- C. Cross-connect and timing board protection
- D. System control board protection
Answer: A,B,C,D
NEW QUESTION 49
Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 50
Which of the following layers defines the protocols that control the network layer? The protocols of the layer work on logical links, that is end-to-end connections between two devices.
- A. Data link layer
- B. Transport layer
- C. Network layer
- D. Application layer
Answer: B
NEW QUESTION 51
Which of the following effects is used by the Raman amplifier?
- A. Self-phase modulation (SPM)
- B. Dispersion
- C. Raman scattering
- D. Four-wave mixing (FWM)
Answer: C
NEW QUESTION 52
For 100G (112 Gbit/s) signals, the actual data baud rate is only 28G baud.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 53
For an OSN 3500, which of the following boards provides the centralized backup function for the +3.3 V power supply of each board in the subrack?
- A. SCC
- B. PIU
- C. COA
- D. AUX
Answer: D
NEW QUESTION 54
According to the formula of "ODUk rate = 239/(239-k) x STM-N frame rate", the ODU4 rate is equal to 239/235 x STM-N frame rate.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 55
The standard Ethernet frame length should not be less than 64 bytes.
Which of the following factors cause this limitation? (Multiple Choice)
- A. Maximum transmission distance
- B. Working mechanism of conflict detection
- C. Minimum transmission distance
- D. MAC address
Answer: A,B
NEW QUESTION 56
The K1 and K2 bytes can transmit APS switching signaling, and can also indicate that the multiplex section signal fails.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 57
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
- A. HP_TIM
- B. RS_TEM
- C. HP_SLM
- D. LP_TEM
Answer: A
NEW QUESTION 58
When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 59
During service configuration, there are two timeslot modes. Huawei uses the interleaved timeslot mode by default.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 60
The fiber core refractive index n1 must be Q the cladding layer refractive index n2, which is a necessary condition for transmitting optical signals in optical fibers.
- A. equal to
- B. higher than
- C. lower than
Answer: B
NEW QUESTION 61
When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?
- A. 35G
- B. 58.75G
- C. 80G
- D. 155G
Answer: D
NEW QUESTION 62
Which of the following can be configured as the monitoring time of NE performance events?
- A. Later than the current time
- B. Same as the current time of the NE
- C. Earlier than the current time
- D. Any time
Answer: A
NEW QUESTION 63
Which of the following statements about an MSP ring are correct? (Multiple Choice)
- A. "Assigned by VC4" means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.
- B. When multiple protection subnets occupy the same port on the same board, you must select "Resource Sharing".
- C. When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.
- D. The number of nodes on an MSP ring cannot exceed 16.
Answer: A,B,C,D
NEW QUESTION 64
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
- D. SNCP ring
Answer: C
NEW QUESTION 65
Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?
- A. n indicates the number of wavelengths carried by the maximum capacity,
- B. r indicates OTM without the OSC function..
- C. m indicates the rate. The value can be 1, 2, or 3.
- D. OTM-nr.m with OSC signals is OTM-n.m.
Answer: C
NEW QUESTION 66
Which of the following are communication quality alarms? (Multiple Choice)
- A. Optical port loopback
- B. Loss of optical signals
- C. NE communication interruption
- D. No login of an NE user
Answer: B,C
NEW QUESTION 67
When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.
- A. R-LOS
- B. R-LOF
- C. MS-AIS
- D. MS-RDI
Answer: D
NEW QUESTION 68
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H31-311-ENU Braindumps Real Exam Updated on Jan 22, 2022 with 190 Questions: https://www.lead2passexam.com/Huawei/valid-H31-311-ENU-exam-dumps.html