最新なHuawei H31-311問題集（190題）、真実試験の問題を全部にカバー！

質問 1：
The fiber core refractive index n1 must be ( ) the cladding layer refractive index n2, which is a necessary condition for transmitting optical signals in optical fibers.
A. lower than
B. equal to
C. higher than
正解：C

質問 2：
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. COA
B. AUX
C. SCC
D. PIU
正解：B

質問 3：
After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.
A. TRUE
B. FALSE
正解：A

質問 4：
On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.
A. TRUE
B. FALSE
正解：B

質問 5：
Which of the following can be configured as the monitoring time of NE performance events?
A. Earlier than the current time
B. Any time
C. Later than the current time
D. Same as the current time of the NE
正解：C

質問 6：
In the Windows operating system, the log files of the U2000 program are stored in the ( ) directory of the U2000 installation drive.
A. /U2000/client/log
B. /U2000/server
C. /U2000/server/log
D. /U2000/client
正解：C

質問 7：
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 must be used together with a processing board.
D. This board has four FE ports.
正解：A,D