Huawei H31-311 Practice Test - Questions Answers

In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.

Which of the following bridges is used to forward data based on the MAC address and VLAN ID carried in data?

In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?

Which of following are the configuration modes of new NEs? (Multiple Choice)

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.

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

Optical fiber loss includes the bending loss, absorption loss, and scattering loss.

The pointer is used for alignment and indicates the start position of VC-n in the corresponding AU or TU frame. In this way, the receive end can correctly remove the corresponding VC from the STM-N, and then split the VC and C encapsulation to separate low-rate signals, such as PDH. That is, low-rate tributary signals can be directly dropped from the STM-N signal.

During service configuration, there are two timeslot modes. Huawei uses the interleaved timeslot mode by default.