H31-311-V2-5Preview

Which of the following statements about the TNB1ELOM board is false?

The working and protection ports of a linear MSP group must be on the same board.

Self-healing refers to the capability of a network to automatically recover its services within a short period from a fault without any manual intervention. Users are unaware of the network fault. A network with this self-healing capability is a self-healing network.

Which of the following fibers has the dispersion characteristics complying with the following description? The dispersion at 1310 nm is 0 and the typical dispersion coefficient around 1550 nm is 17 ps/nm.km.

Which of the following are optical-layer boards? (Choose all that apply.)

When ODUk SNCP is configured, common WDM services can be converted into SNCP services, but SNCP services cannot be converted into common WDM services.

Which of the following sites support service adding/dropping? (Choose all that apply.)

When the number of block errors detected by the B2 byte received at the receive end is returned to the transmit end through the M1 byte, which of the following alarms or performance events are reported at the transmit end?

Which of the following are optical-layer trails? (Choose all that apply.)

The switching conditions of an MSP ring include signal failure (SF) and signal degrade (SD). SD generally refers to B2_SD. Which of the following alarms are included in SF? (Choose all that apply.)

The OptiXtrans E6616/OptiX OSN 1800V Pro supports the creation of a two-fiber bidirectional MSP ring, and the capacity level can be set to STM-1, STM-4, STM-16, or STM-64.

Which of the following statements about ODUk_PM_BDI is true?

After signals are transmitted for a certain distance in a WDM system, the optical signal-to-noise ratio (OSNR) at the receive end decreases to a certain extent. Which of the following is the main cause?

When configuring 1+1 optical line protection, you can select RI1/TO1 or RI2/TO2 as the working channel according to the actual situation.

The last 256 columns in the OTN frame structure are FEC areas, which are used for forward error correction.

Which of the following is not an advantage of a Raman amplifier?

Which of the following principles is used for light propagation in an optical fiber? According to the Snell's law, the angles of incidence and refraction are equal (θ1 = θ3), and the relationship between incidence and refraction meets the equation: n1sinθ1 = n2sinθ2.

Single-fiber unidirectional transmission provides higher bandwidth than single-fiber bidirectional transmission.

The WDM system generally uses DCMs to compensate chromatic dispersion. Which of the following statements about the DCM dispersion compensation is false?

Four ODU2e or ODU2 signals can be multiplexed into one ODU3 signal.

Subnetwork connection protection (SNCP) requires the APS protocol.

If a board is offline, ODUk SNCP will be triggered. Which of the following conditions indicate that a board is offline? (Choose all that apply.)

For 100G (112 Gbit/s) signals, the actual data baud rate is only 28G baud (112/2/2 = 28G).

OTM nr.m consists of a maximum of "n" optical multiplexing channels and does not support non-associated overheads. The letter "r" indicates function reduction.