If a bit error is detected in the B1 byte, which of the following alarms will be reported by the other end?

If a bit error is detected in the B1 byte, which of the following alarms will be reported by the other end?A . MS-AISB . RS-BBEC . RS-FEBBED . Not reportView AnswerAnswer: D

April 8, 2025 No Comments READ MORE +

Which of the following IP addresses is a Class C IP address?

Which of the following IP addresses is a Class C IP address?A . C2.A8.D2.e1B . 10.110.192.111C . 10011010.01101110.10000000.01101111D . 127.0.0.1View AnswerAnswer: A

April 6, 2025 No Comments READ MORE +

Pointer adjustment is related to which of the following?

Pointer adjustment is related to which of the following?A . ClockB . RateC . ExpensesD . ScramblingView AnswerAnswer: A

April 6, 2025 No Comments READ MORE +

FAS is the frame alignment overhead with a length of 6 bytes. The 1st to 3rd bytes are 3 OA1 bytes, each OA1 is always "1111 0110"; the 1st to 6th bytes are 3 OA2 bytes, each OA2 is always "0010 1000". OA1 and OA2 are the frame alignment bytes of this frame signal, which are equivalent to A1 A2 in the SDH frame structure.

FAS is the frame alignment overhead with a length of 6 bytes. The 1st to 3rd bytes are 3 OA1 bytes, each OA1 is always "1111 0110"; the 1st to 6th bytes are 3 OA2 bytes, each OA2 is always "0010 1000". OA1 and OA2 are the frame alignment bytes...

April 4, 2025 No Comments READ MORE +

For OSN6800 equipment, which of the following slots does not have an electrical layer cross-backplane bus?

For OSN6800 equipment, which of the following slots does not have an electrical layer cross-backplane bus?A . Slot1B . Slot9C . Slot10D . Slot17View AnswerAnswer: D

April 4, 2025 No Comments READ MORE +

When LCK is inserted into the local ODUk signal, which processing will the downstream station system not perform?

When LCK is inserted into the local ODUk signal, which processing will the downstream station system not perform?A . Report ODUk_PM_LCK alarmB . Insert DDUK_AIS informationC . Return DDUk_PM_BDID . Insert DDUk_PM_LCK alarmView AnswerAnswer: D

April 3, 2025 No Comments READ MORE +

In terms of protection capability, which of the following topologies has the strongest protection capability?

In terms of protection capability, which of the following topologies has the strongest protection capability?A . Linear topologyB . Star topologyC . Tree topologyD . Ring topologyE . Mesh topologyView AnswerAnswer: E

April 2, 2025 No Comments READ MORE +

How many 2M business work boards does OSN 7500 support at most? Which of the following is correct?

How many 2M business work boards does OSN 7500 support at most? Which of the following is correct?A . 1B . 2C . 3D . 4View AnswerAnswer: D

April 2, 2025 No Comments READ MORE +

A 2.2m cabinet can accommodate up to which of the following OSN 2500 sub-racks?

A 2.2m cabinet can accommodate up to which of the following OSN 2500 sub-racks?A . 1B . 2C . 3D . 4View AnswerAnswer: C

March 31, 2025 No Comments READ MORE +