If only all network elements in a certain subnet are out of management on the network management system, and network elements belonging to other subnets communicate normally, which of the following reasons is impossible?

• A.NMS network management failure
• B.The network scale is too large, and the scale of ECC communication between network elements exceeds the processing capacity of network elements
• C.Misconnection or failure of optical fiber
• D.Changing the IP address of the gateway NE by mistake

Comment: *

Name: *

Email: *

Verification: *

In the OTUk frame structure, which of the following alarms are related to section monitoring? (Choose all that apply.)

• A.OTUk_BDI
• B.OTUk_SM_DEG
• C.OTUk_DEG
• D.OTUk_SM_BDI

Comment: *

Name: *

Email: *

Verification: *

NG WDM equipment uses Ethernet frames to carry MPLS packets

• A.True
• B.False

Comment: *

Name: *

Email: *

Verification: *

Which of the following statements about ODUflex are true?

• A.Users can flexibly configure the ODUflex capacity based on the service volume.
• B.The ODUflex rate is defined as N x 1.25 Gbit/s. The ODUflex bandwidth is adjusted by changing the value of N.
• C.ODUflex improves bandwidth utilization.
• D.The TOA board does not support ODUflex.

Comment: *

Name: *

Email: *

Verification: *

When the OTUK_DEG alarm is detected at the local end, which one is correct about the description of the alarm handling at the upstream site?

• A.Upstream site reports OTUKBDI
• B.The upstream site reports 0TUK_SSF
• C.The upstream site reports ODUkPL_SSF
• D.The upstream site reports 0TUK_BET

Comment: *

Name: *

Email: *

Verification: *