H31-311 Online Practice Questions and Answers

When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.

A. MS-AIS

B. R-LOS

C. R-LOF

D. MS-RDI

Which of the following is the meaning of SFD in the Ethernet frame structure?

A. Preamble

B. Frame check sequence

C. Start frame delimiter

D. Payload

Which of the following is not the advantage of WDM?

A. Ultra-large capacity and transparent data transmission

B. Easy to upgrade and maximizing the protection for existing investments

C. Completely substituting for SDH devices

D. Compatible with all optical switching networks in the future

In the case of 1+1 linear MSP, which of the following switching modes do not require the enabling of the APS protection protocol? (Multiple Choice)

A. Single-ended revertive mode

B. Single-ended non-revertive mode

C. Dual-ended revertive mode

D. Dual-ended non-revertive mode

MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.

A. TRUE

B. FALSE

In the case of SNCP, a line board selectively receives services. Therefore, the SNCP can protect the services on the line.

A. TRUE

B. FALSE

Which of the following are VLAN classification methods? (Multiple Choice)

A. By MAC address

B. By port

C. By subnet

D. By protocol

The working mode of a port determines the flow control mode of the port. When the working mode is 100 Mbit/s full duplex, which of the following flow control modes can be used?

A. Auto-negotiation flow control mode

B. Non-auto-negotiation flow control mode

C. Both of the above

D. None of the above

Which of the following statements about the signal label byte C2 is incorrect?

A. The C2 byte is used to indicate the multiplexing structure of the VC frames and the payload property.

B. The C2 byte to be sent must match the C2 byte to be received.

C. If the C2 byte mismatch is detected, an LP_SLM alarm is reported in the corresponding VC-4 channel.

D. C2=00H indicates that the VC-4 is unequipped.

For the (local) HA solution where the active and standby servers are deployed in the same place, which of the following platforms can be deployed? (Multiple Choice)

A. Windows

B. Solaris

C. SUSE Linux

D. All of the above

Which of the following device domains can be managed by the U2000? (Multiple Choice)

A. Transport device

B. Wireless device

C. Data communication device

D. Access device

Automatic laser shutdown (ALS); When no optical signal is received, the ALS function automatically shuts down the corresponding optical module. This function protects onsite maintenance personnel.

A. TRUE

B. FALSE

MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.

A. TRUE

B. FALSE

Which of the following service levels cannot be selected during service configuration?

A. VC12

B. VC8

C. VC4

D. VC3

Manual configuration will clear data on the NE side.

A. TRUE

B. FALSE