[Aug-2022] H31-311_V2.5 Exam Dumps, H31-311_V2.5 Practice Test Questions [Q50-Q67]

NO.50 Which of the following is the meaning of SFD in the Ethernet frame structure?

NO.51 When the sender detects that the b6-b8 of the K2 byte is 110, it means that the sender has reported an alarm ().

NO.52 After configuring PDH on a per-net element basis, the full trace cannot be searched. Which of the following is a possible cause? (Multiple choice)

NO.53 When the working PQ1 board is oversized, the device will perform and the TFS protection will be reversed. Which of the following statements about the switching process are correct? (Multiple choice).

NO.54 A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.

NO.55 For osn3500, which of the following boards provides centralized backup capability for the +3.3V power supply of each board in the sub-shelf?

NO.56 Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?

NO.57 According to the formula “ODUk rate = 239/(239k) x STM-N frame rate”, ODU4 The rate is equal to the 239/235xSTM-N Pa rate.

NO.58 For OSN3500, there is a slot mapping relationship between the processing board and the interface pre-processor. The processing board in slot 1 maps to the interface board in slots 19-20.

NO.59 Which of the following bytes can be used for wired phones between two REG devices?

NO.60 Which of the following statements about the MST functional module is correct? (Multiple choice).

NO.61 Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.

NO.62 During service configuration, there are two time slot modes. Huawei uses interleaved time slot mode by default.

NO.63 The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots

NO.64 The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal

NO.65 The frame structure of ODU4 is four times that of ODU1

NO.66 Fiber loss includes bending loss, absorption loss and scattering loss.

NO.67 The SP3D board supports 63 E1 services