Question 1

Which of the following descriptions about 64K SNCP protection is correct?

Options :

A : switching time <50ms

B : Support double-ended switching

C : Double send and selective receiving

D : Recovery mode supports recovery and non-recovery

Answer: A,B,C

Question 2

Which of the following methods are included in the networking and application of NG WDM?

Options :

A : ring

B : chain type

C : Mesh

D : point to point

Answer: A,B,C,D

Question 3

(Single choice) The TOA board is an 8-channel arbitrary rate service tributary processing board. The following is about the TOA (STND) board In the description, the error is:

Options :

A : The maximum cross-connect capacity of the TOA board is 20 Gbit/s

B : When the client-side service is GE, the port working mode is ODU0 non-convergence mode, and intra-board crossover needs to be configured

C : When the client side service is STM-16, the port working mode is ODU1 non-convergence mode, and no configuration board is required Inner cross

D : When the client-side service is FE, the port working mode is ODU1 aggregation mode, and intra-board crossover needs to be configured

Answer: B

Question 4

In the process of configuring E-LAN, "MAC address learning mode" can be set to SVL and IVL. SVL is Independent VLAN learning, IVL is shared VLAN learning.

Options :

A : TRUE

B : FALSE

Answer: B

Question 5

The characteristic test of NS4 single board includes:

Options :

A : receiving sensitivity

B : center wavelength test

C : side mode suppression ratio

D : -20dB spectrum width test

Answer: A,B,C,D