Which of the following log types is not supported by NCE-T?

• Maintenance logs

• System logs

• Operation logs

• Security logs

Which of the following statements about the Ethernet frame structure is false?

• The length of a standard Ethernet frame must be greater than or equal to 64 bytes.

• FCS: frame check sequence. The length is 4 bytes.

• SFD: frame start delimiter, which is used to inform the receive and that the next byte is the beginning of a frame.

• Frames with the "Type" field set to "0x0806" are IP frames.

Which of the following is not an advantage of SDH?

• lntenationally unified standard interfaces

• Fewer OAM overheads

• Backward compatibility

• Standard multiplexing path

According to the OTU board naming rules, which of the following statements about the MS04 board is false?

• M: indicates an optical transponder board.

• S: indicates that the board has only one WDM-side port.

• 04: indicates that the board has four client-side ports.

• 04: indicates that the maximum rate of the services received by each port on the WDM side of the board Is OTUC4.

Which of the following statements about optical multiplexer and demultiplexer boards on OptiXtrans E9600/OptiX OSN 9800 is false?

• TNG3M48V: 48-channel multiplexer board (Excend C-band)

• TNG2M60V: 60-channel multiplexer board with VOA (Super C-band)

• As an optical multiplexer and demultiplexer board, the UITL board multiplexes and demultiplexes wavelength signals at a 50 GHz or 100 GHz channel spacing.

• The TNG2D6001 board demultiplexes one multiplexed-wavelength signal into a maximum of 60 even-wavelength optical signals.

Which of the following encapsulation protocols maps data signals to SDH or OTN signals?

• HDLC

• PPP

• GFP

• LAPS

Which of the following is the frame structure of STM-16?

• 9*270*1

• 9*270*4

• 9*270*16

• 9*270*64

Which of the following statements about QinQ is false?

• Increases the number of VLAN IDs.

• Provides a more cost-effective and convenient Layer 2 VPN solution.

• Expands Ethernet services from LANs to WANs.

• Its inner VLAN tag is an S-VLAN tag, and its outer VLAN tag is a C-VLAN tag.

Which of the following protocols is not supported by Huawei devices for DCN networking?

• Transmission Control Protocol/lntemet Protocol (TCP/IP)

• OSI protocol

• HWECC protocol

• OSPF protocol

The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit and through ( ), and HP-REI and HP-FEBBE are reported at the transmit end.

• K3 (b1-b4)

• G1 (b5-b8)

• G1 (b1-b4)

• J1 (b1-b4)