Huawei
H31-311_V2.5
Q1:
Which of the following light sources has the best dispersion tolerance and stability?
○
A
Direct modulation of the light source○
B
EA modulates the light source○
C
Mach-Zehnder modulates the light source○
D
None of the above
Huawei
H31-311_V2.5
Q2:
Which of the following bytes can be used for ordenwire calls between two REG devices?
○
A
E1○
B
E2○
C
E1 and E2○
D
Not above
Huawei
H31-311_V2.5
Q3:
Are the following statements regarding the definition of SDH correct?
○
A
hierarchy that can be used for asynchronous digital transfers○
B
A hierarchy of standardized digital signals that can be asynchronously reused○
C
A hierarchy of standardized digital signals that can be cross-connected asynchronously○
D
Complete hierarchy of standard mathematical signals, providing simultaneous digital transmission multiplexing and cross-connectivity
Huawei
H31-311_V2.5
Q4:
In the system control unit, which of the following databases does not lose data after a power failure? (Multiple choice).
☐
A
MDE☐
B
DRDB☐
C
FDB0☐
D
FDB1
Huawei
H31-311_V2.5
Q5:
The backplane has two 48V power cords, and each board gets two -48V power supplies from the backplane. After combining the power supply via diodes, the various voltages required for each component are obtained by means of a DC/DC power module and a linear mane swap.
○
A
True○
B
Error