[2024年11月29日] H31-311_V2.5 PDF問題とテストエンジンには750問があります
更新された試験エンジンはH31-311_V2.5試験無料お試しサンプル365日更新されます
質問 # 399
Unified line type single board supports mixed transmission of OTN, SDH and packet services, and also supports the transmission of one of the services.
- A. True
- B. False
正解：A
質問 # 400
The SDH frame structure is a rectangular block frame based on which of the following options?
- A. Block D frame
- B. Bytes
- C. Bit
正解：B
質問 # 401
The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.
- A. False
- B. True
正解：A
質問 # 402
The main difference between an open DWDM system and an integrated DWDM system is whether or not the following technologies are used?
- A. Multiplexing and demultiplexing technology
- B. Wavelength conversion technology
- C. Optical Monitoring Technology
- D. Optical Amplification Technology
正解：B
質問 # 403
Which of the following statements about extending the ECC is incorrect?
- A. You can enable auto-scaling ECC on up to four network elements. Under the Hand Extension
- B. Auto-expanding ECC means an Ethernet port that uses a pass-through cable to connect two network elements
- C. Extended ECC in specified mode indicates that a server and client need to be specified.
- D. Extended ECC is divided into Auto Extended ECC and Extended ECC in specified mode.
- E. C overlay, each server can link up to three clients.
正解：A
質問 # 404
Which of the following is the basic requirement of the DWDM system in the light source?
- A. output wavelength stabilization
- B. Use the direct modulation method
- C. Low dispersion tolerance.
- D. The launch function is very high
正解：A
質問 # 405
The transmitting end detects that b6-b8 of the K2 byte is 110, indicating that the transmitting end generates an MS-AIS alarm.
- A. False
- B. True
正解：A
質問 # 406
Which of the following alarms will be reported when performing a fiber cut test on a common MSP ring? (Multiple choice)
正解：
解説：
B.C.
質問 # 407
A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.
- A. Error
- B. True
正解：B
質問 # 408
Which of the following types of Ethernet can be divided into? (Multiple choice)
- A. Standard Ethernet
- B. Fast Ethernet FE
- C. Gigabit Ethernet GE
- D. 10 Gigabit Ethernet 10GE
正解：B、C、D
質問 # 409
In the OTN mapping path, the ODUk signal can only be obtained by mapping the OPUk signal at the same level.
- A. True
- B. False
正解：A
質問 # 410
Which of the following is the default WTR time for MSP switching?
- A. 12 min
- B. 15 minutes
- C. 6 min
- D. 10 minutes
正解：D
質問 # 411
OChr means the use of electrical monitoring technology.
- A. Error
- B. True
正解：B
質問 # 412
The scope of management of OMSn is the path from the input optical port on the multiplexer unit of the sending site to the output optical port on the multiplexer unit of the receiving site, called the optical multiplexing segment (OMS) path.
- A. Error
- B. True
正解：B
質問 # 413
The internal data forwarding table of the switch is based on source MAC learning.
- A. True
- B. False
正解：A
質問 # 414
Only one TCM can be used at one site
- A. False
- B. True
正解：A
質問 # 415
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
正解：A
質問 # 416
Which of the following statements about signal label byte C2 is wrong?
- A. C2=00H means VC-4 is not equipped
- B. If a C2 byte mismatch is detected, an LP SLM alarm is reported in the corresponding VC-4 channel
- C. The C2 byte to be sent must match the C2 byte to be received
- D. The C2 byte is used to indicate the multiplexing structure and payload attributes of the VO frame
正解：B
質問 # 417
EPL services use bandwidth exclusively on the line, which is very safe. Dedicated line applications for VIP customers
- A. True
- B. False
正解：A
質問 # 418
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