NEW QUESTION 69
Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice).

NEW QUESTION 70
The 1510nm optical monitoring channel can be effectively amplified after passing through EDF

NEW QUESTION 71
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?

NEW QUESTION 72
Which of the following statements about signal label byte C2 are incorrect?

NEW QUESTION 73
When there is a Critical Error In Seconds (SES) in the PM portion of the ODUk layer, which of the following alarms is reported by NMS?

NEW QUESTION 74
Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?

NEW QUESTION 75
OTM nr.m consists of up to n ” multiplexed channels and does not support non-channel-related overhead. The letter “r” indicates a decrease in functionality.

NEW QUESTION 76
When the fiber between node A and node B is disconnected, the RU on node B detects OTS_LOS alarm and will OTS_BDI The ru of the alert inserted into node A of node A forces reports OTS BDI alarms. The board reports och_SSF alarm on the downstream C node.

NEW QUESTION 77
The clock unit can only access the external clock source as the timing signal source of the system through the external clock interface. In addition; It can also output a processed clock and provide a clock source for other devices that need timing.

NEW QUESTION 78
SDH signals must be scrambled before they can be transmitted over optical fibers. Which of the following bytes is not scrambled? (Multiple choice).

NEW QUESTION 79
When the J1 byte does not match, an alarm () is reported and the service may be interrupted.

NEW QUESTION 80
Which of the following is not the advantage of WDM?

NEW QUESTION 81
Which of the following statements about the advantages of OTN are incorrect?

NEW QUESTION 82
What of the following operations may interrupt the network element service? (Multiple choice).

NEW QUESTION 83
STM-64 has an () AU pointer.

NEW QUESTION 84
When the SNCP ring consisting of four Optis OSN 2500 devices has a rate of 25 Gbt/s, the network’s service answer stars can carry up to ()2Mt/s Signal.

NEW QUESTION 85
Which of the following is the main advantage of SDH? (Multiple choice).

NEW QUESTION 86
EPL services use bandwidth exclusively on the line, which is very safe. Dedicated line applications for VIP customers

NEW QUESTION 87
Which of the following bytes can be used for wired phones between two REG devices?

NEW QUESTION 88
Both PDH and SDH have globally harmonized standards.

NEW QUESTION 89
Which of the following are the service board types for MSTP devices? (Multiple choice).