최신Huawei HCIA-Transmission V2.5 - H31-311_V2.5무료샘플문제
문제1
Which of the following different types of ESC are classified according to implementation principles?
(Multiple choice)
Which of the following different types of ESC are classified according to implementation principles?
(Multiple choice)
정답:
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문제2
The receiving end performs BIP-8 check on the received STM-16 frame before descrambling. The result of XOR with the B1 byte of the next STM-16 frame received is 10001100. This means that several error blocks have occurred in the STM-16 frame. Which of the following options is correct?
The receiving end performs BIP-8 check on the received STM-16 frame before descrambling. The result of XOR with the B1 byte of the next STM-16 frame received is 10001100. This means that several error blocks have occurred in the STM-16 frame. Which of the following options is correct?
정답: A
문제3
Which of the following features must be enabled on the port when configuring a VLAN-based service type?
Which of the following features must be enabled on the port when configuring a VLAN-based service type?
정답: C
문제4
Which of the following converts non-standard wavelengths into standard wavelengths specified by ITU-T in the WDM system structure?
Which of the following converts non-standard wavelengths into standard wavelengths specified by ITU-T in the WDM system structure?
정답: D
문제5
If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex may be used instead of full-duplex.
If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex may be used instead of full-duplex.
정답: A
문제6
Arrayed Guided Grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large channels and flat passband. It is suitable for ultra-high-speed, large-capacity DWDM systems.
Arrayed Guided Grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large channels and flat passband. It is suitable for ultra-high-speed, large-capacity DWDM systems.
정답: A
문제7
Coherent receiver technology uses a local oscillator laser with the same frequency as the received signal to perform coherent processing and recover () information from the received signal. (Multiple choice)
Coherent receiver technology uses a local oscillator laser with the same frequency as the received signal to perform coherent processing and recover () information from the received signal. (Multiple choice)
정답: A,B,C
문제8
If the virtual cascade group at one end of the device has LCAS enabled, but the other end has not enabled LCAS, the connection fails.
If the virtual cascade group at one end of the device has LCAS enabled, but the other end has not enabled LCAS, the connection fails.
정답: B
문제9
Which of the following modulation techniques is used in 100G coherent systems?
Which of the following modulation techniques is used in 100G coherent systems?
정답: A
문제10
Which of the following options are low-loss areas of single-mode optical fiber? (Multiple choice)
Which of the following options are low-loss areas of single-mode optical fiber? (Multiple choice)
정답: A,D
문제11
Which of the following descriptions of OTM-nm and OTM-nr.m optical layer interfaces of OTN is wrong?
Which of the following descriptions of OTM-nm and OTM-nr.m optical layer interfaces of OTN is wrong?
정답: A
문제12
User management can ensure the security of user information and system. The core of user management is to achieve decentralized management.
User management can ensure the security of user information and system. The core of user management is to achieve decentralized management.
정답: A