Free H31-311 Exam Dumps Preview

Which of the following operations may interrupt NE services? (Choose two)

MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.

An OTN node reports TCM (tandem connection monitoring) alarms.

Which of the following is not a condition for triggering multiplex section protection (MSP)?

Which of the following is not a non-linear effect?

Which of the following is the basic requirement of a DWDM system on a light source?

Which of the following is the frame whose VC-4 J1 byte is indicated by the current frame's AU pointer?

In an MSTP network carrying GPON OLT uplink traffic, which configuration improves service differentiation?

OChr means that the electrical supervisory technology is used.

For an OSN 3500, which of the following boards provides the centralized backup function for the +3.3 V power supply of each board in the subrack?

In a transmission network upgrade, which optical parameter must be evaluated before increasing channel rate? (Choose three)

Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

Assume that 2 x VC-12 timeslots need to be bound with VCTRUNK1 of the N2EFS4 board.

When 8 x VC- 4 timeslots are available on the N2EFS4 board, which of the following timeslots meets the requirements?

Which of the following is the multiplexing mode of SDH?

Which of the following are the electrical-layer overheads of OTN? (Choose three)

Which of the following are the differences between AU pointer and TU pointer? (Choose three)

Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?

1. The B2 byte indicates the transmission channel.
2. The Ml byte indicates the transmission channel.
3. MS-REI is transmitted from the sink to the source.
4. MS-REI is transmitted from the source to the sink.
5. Indicates the number of detected bit errors after the sink receives the MS signals.

PDM uses the polarization beam splitter to divide the laser into two perpendicular directions: x and y.

Configuring an EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring, the STP protocol must be enabled on the network to prevent broadcast storms.

Which of the following is the meaning of SFD in the Ethernet frame structure?

When the rate of an SNCP ring consisting of four OptiX OSN 2500 devices is 2.5 Gbit/s, the service capacity of this network can carry a maximum number of ( ) 2 Mbit/s signals.

In the system control unit, which of the following databases do not lose data after a power failure? (Choose two)

Which of the following is the main networking type of a transmission network?

Which of the following statements about the MD02 board is incorrect?

Which of the following service types are supported by MS-OTN devices? (Choose four)

Which of the following ESC types are classified based on their implementation principles? (Choose two)

TU-AIS is frequently encountered during network maintenance.

Which of the following alarms can trigger the TU-AIS alarm? (Choose four)

Which of the following statements about clock sources is incorrect?

OSN1500/2500/3500/7500 supports both DC and AC power inputs.

Which of the following working windows is indicated by "2" in the optical module parameter L-64.2"?

Which of the following statements about the MST functional module are correct? (Choose two)

The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.

Which of the following is the frame structure of STM-16?

Which of the following is the maximum number of OSN 3500 subracks that can be installed in a 2.2 m cabinet?

Outband networking requires higher costs than inband networking, but provides more reliable management channels.

The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.

MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.

Which of the following service levels cannot be selected during service configuration?

The rate of STM-1 is ( ) bit/s.