[Oct-2021] Pass H31-311-ENU Exam in First Attempt UpdatedH31-311-ENU Real4dumps Exam Question
Huawei-certification Dumps H31-311-ENU Exam for Full Questions - Exam Study Guide
NEW QUESTION 90
NE A and NE B are adjacent NEs.
If B3 and lower-order bit errors occur in the A->B direction, and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Multiple Choice)
- A. MSBBE
- B. MSFEBBE
- C. HPBBE
- D. HPFEBBE
- E. RSBBE
- F. RSFEBBE
Answer: A,C,D,E
NEW QUESTION 91
The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame, and a maximum of ( ) base frames are included.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 92
According to ITU-T recommendations, the requirement that the MSP switching time should be within 50 ms is conditional. For example, the number of NEs on an entire ring network is less than 16.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 93
The STAT indicator of an SDH board is blinking red, on for 100 ms and off for 100 ms.
Which of the following is the meaning of the indicator status?
- A. Normal operating
- B. Hardware mismatch
- C. Hardware fault
- D. No power supply input
Answer: B
NEW QUESTION 94
Which of the following ITLI-T recommendations defines the OTN frame structure?
- A. G.975
- B. G.709
- C. G.652
- D. G.694
Answer: B
NEW QUESTION 95
The coherent receiver technology uses the local oscillator laser that has the same frequency as the received signals to perform coherent processing and recovers the ( ) information from the received signals. (Multiple Choice)
- A. Frequency
- B. Phase
- C. Polarization state
- D. Amplitude
Answer: B,C,D
NEW QUESTION 96
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. MS-AIS
- B. MS-RDI
- C. R-LOF
- D. R-LOS
Answer: B
NEW QUESTION 97
TU-AIS is frequently encountered during network maintenance.
Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)
- A. AU-LOP
- B. HP-TIM
- C. B2-EXC
- D. R-LOS
Answer: A,B,C,D
NEW QUESTION 98
Which of the following optical sources has the best dispersion tolerance and stability?
- A. Directly modulated light source
- B. None of the above
- C. EA-modulated light source
- D. Mach-Zehnder modulation light source
Answer: D
NEW QUESTION 99
The OSN 1500/2500/3500/7500 supports both DC and AC power inputs.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 100
The standard Ethernet frame length should not be less than 64 bytes.
Which of the following factors cause this limitation? (Multiple Choice)
- A. Minimum transmission distance
- B. MAC address
- C. Maximum transmission distance
- D. Working mechanism of conflict detection
Answer: C,D
NEW QUESTION 101
Which of the following statements about basic LCAS functions are correct? (Multiple Choice)
- A. New NEs and links are automatically discovered.
- B. An error tolerance mechanism is provided to enhance the robustness of the virtual concatenation function.
- C. The bandwidth is dynamically increased or decreased.
- D. The failure members are protected and recovered.
Answer: B,C,D
NEW QUESTION 102
A PAUSE frame uses a reserved multicast address and is not forwarded by a bridge or switch. In this way, the PAUSE frame does not generate any additional information.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 103
Which of the following service levels cannot be selected during service configuration?
- A. VC3
- B. VC4
- C. VC12
- D. VC8
Answer: D
NEW QUESTION 104
Which of the following effects is used by the Raman amplifier?
- A. Four-wave mixing (FWM)
- B. Dispersion
- C. Self-phase modulation (SPM)
- D. Raman scattering
Answer: D
NEW QUESTION 105
The pointer is used for alignment and indicates the start position of VC-n in the corresponding AU or TU frame. In this way, the receive end can correctly remove the corresponding VC from the STM-N, and then split the VC and C encapsulation to separate low-rate signals, such as PDH. That is, low-rate tributary signals can be directly dropped from the STM-N signal.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 106
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. B1 byte
- B. K byte
- C. E1 byte
- D. D byte
Answer: B,C,D
NEW QUESTION 107
Which of the following are the service board types of MSTP devices? (Multiple Choice)
- A. Auxiliary board
- B. Service processing board
- C. Interface board
- D. Service processing board with interfaces
Answer: B,C,D
NEW QUESTION 108
Optical fiber loss includes the bending loss, absorption loss, and scattering loss.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 109
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