H31-311_V2.5 Practice Test Questions Answers Updated 750 Questions
H31-311_V2.5 dumps & Huawei Transmission Sure Practice with 750 Questions
NEW QUESTION # 144
The difference between dispersion compensation fibers and ordinary optical fibers is that the dispersion compensation fibers have a negative dispersion coefficient at ().
- A. 800nm
- B. 1550nm
- C. 1310 nm
- D. 1650nm
Answer: B
NEW QUESTION # 145
Which of the following statements about Multiplexed Section Remote Error Indication (MS-REI) are correct?
① The B2 byte indicates the transmission channel.
② The M1 byte indicates the transmission channel.
③ MS-REI is sent from the sink to the source.
④ MS-REI is transmitted from the source to the receiver.
Indicates the number of bit errors detected by the receiver after receiving the MS signal.
- A. ②④⑤
- B. ①④⑤
- C. ①③⑤
- D. ②③⑤
Answer: D
NEW QUESTION # 146
OChr means the use of electrical monitoring technology.
- A. False
- B. True
Answer: B
NEW QUESTION # 147
Which of the following protocols does NCE use to automatically discover TE link resources, node resources, pipeline resources, and cross-link resources? (Multiple choice)
- A. PCEP
- B. IS-IS
- C. OSPF
- D. BGP
Answer: A,C
NEW QUESTION # 148
Which of the following ITLI-T recommendations define the OTN frame structure?
- A. G.694
- B. G.652
- C. G.975
- D. G.709
Answer: D
NEW QUESTION # 149
After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.
- A. False
- B. True
Answer: B
NEW QUESTION # 150
output networks require higher costs than belt networks, but provide a more reliable management channel.
- A. True
- B. Error
Answer: A
NEW QUESTION # 151
Which of the following options meet the advantages of erbium-doped fiber amplifiers? (Multiple choice)
- A. Gain characteristics are stable
- B. High energy conversion efficiency
- C. High gain and high output power
- D. High coupling efficiency
Answer: A,B,C,D
NEW QUESTION # 152
Which of the following is the basic requirement of the DWDM system in the light source?
- A. Low dispersion tolerance.
- B. Use the direct modulation method
- C. The launch function is very high
- D. output wavelength stabilization
Answer: D
NEW QUESTION # 153
Which of the following functions does the TNG2AST2 board not support?
- A. Electrical layer ASON
- B. IEEE 1588v2
- C. Optical layer ASON
- D. Line fiber quality monitoring function
Answer: A
NEW QUESTION # 154
Automatic Laser Shutdown (ALS): When no optical signal is received, the ALS function automatically turns off the corresponding optical module. This feature protects field maintenance personnel.
- A. True
- B. Error
Answer: A
NEW QUESTION # 155
What does the optical layer overhead include? (Multiple choice)
- A. OTS
- B. Och
- C. OMS
- D. ODUk
Answer: A,B,C
NEW QUESTION # 156
Which of the following can be configured as the monitoring time for network element performance events?
- A. Earlier than the current time
- B. Any time
- C. Later than the current time
- D. Same as the current time of NE
Answer: C
NEW QUESTION # 157
The rate of STM-1 is ()bit/s.
- A. 9*270*1'8000*16
- B. 9*270*1*8000*8
- C. 9*270*8000
- D. 9*270*1*8000
Answer: B
NEW QUESTION # 158
The fiber core refractive index n1 must be () Q of the cladding refractive index n2, which is a necessary condition for transmitting optical signals in optical fibers.
- A. Higher than
- B. Equal to
- C. Lower than
Answer: A
NEW QUESTION # 159
SDB is a hierarchical structure of standardized digital signals that can be used for (), multiplexing and cross-connection
Answer:
Explanation:
Synchronous digital transmission
NEW QUESTION # 160
The TAG attribute cannot be set for the internal port VCTRUNK of the single board on the NMS.
- A. True
- B. False
Answer: B
NEW QUESTION # 161
According to the number of optical fibers between adjacent network element nodes, the self-healing ring can be divided into () and ()
Answer:
Explanation:
One-way loop |Two-way loop
NEW QUESTION # 162
TNV2E224 board does not support which of the following types of protection?
- A. SNCP
- B. Tunnel APS
- C. LAG
- D. PW APS
Answer: A
NEW QUESTION # 163
When using scripts to back up and restore the network configuration data of the U2000, you can change the directory where the exported files are saved.
- A. True
- B. False
Answer: B
NEW QUESTION # 164
Which of the following optical loss alarms will not cause service interruption? (Multiple choice)
- A. OSC_LOS
- B. MUT_LOS
- C. CHAZ_LOS
- D. R_LOS
Answer: A,C
NEW QUESTION # 165
The 1510nm optical monitoring channel can be effectively amplified after passing through EDFA.
- A. True
- B. False
Answer: B
NEW QUESTION # 166
Coherent reception uses a local oscillator laser of the same frequency to coherently receive the optical signal. Which of the following information can be recovered from the received signal? (Multiple choice)
- A. Phase
- B. Amplitude
- C. Polarization state
- D. Frequency
Answer: A,B,C,D
NEW QUESTION # 167
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