H31-311_V2.5 Exam Questions

Which of the following layers of overhead belong to the electrical layer overhead of OTN? (Multiple choice)

Which of the following options belong to optical layer boards? (Multiple choice)

Which of the following types of Ethernet can be divided into? (Multiple choice)

Which of the following steps are required to multiplex a -4 signal into an STM-N signal? (Multiple choice)

When a device that supports auto-negotiation is connected to a device that does not support auto- negotiation, a duplex mode mismatch may occur. What are the manifestations? (Multi...

Coherent reception uses a local oscillator laser of the same frequency to coherently receive the optical signal. Which of the following information can be recovered from the receiv...

Which overhead bytes of SDH are used by the LCAS function to carry control information and perform handshake operations between the source and sink? (Multiple choice)

Which of the following site types support business up and down? (Multiple choice)

Which of the following options are needed to directly send a low-speed signal from a high-speed signal? (Multiple choice)

Which of the following options are included in the alarm level in the NCE-T system? (Multiple choice)

Which of the following descriptions about 1+1 and 1:1 optical line protection are wrong? (Multiple choice)

In which of the following types of cabinets can the Optix OSN 9800 U32 standard subrack be installed? (Multiple choice)

Which of the following options are the main characteristics of the transmission network? (Multiple choice)

Which of the following descriptions about MS-OTN are wrong? (Multiple choice)

Which of the following options are correct in describing the system architecture of the Optixtrans E9600/OptiX OSN 9800 product? (Multiple choice)

Which of the following layers of overhead belong to the electrical layer overhead of OTN? (Multiple choice)

Which of the following options meet the advantages of erbium-doped fiber amplifiers? (Multiple choice)

From the perspective of single board implementation, what are the main types of ESC? (Multiple choice)

Which of the following options are common signal failure alarms? (Multiple choice)

EDFA (Erbium Doped Fiber Amplifier) is a key component of the new generation of optical communication systems. Which of the following options are included in its characteristics?

Which of the following alarms or events are conditions for SNCP switching? (Multiple choice)

Which types of destination MAC addresses in Ethernet frames can be classified into? (Multiple choice)

Which of the following options are correct regarding 1:1 optical line protection? (Multiple choice)

What are the advantages of ESC? (Multiple choice)

Which of the following wavelengths can be used as pump light sources? (Multiple choice)

SDH signals need to be scrambled before being transmitted on optical fiber. Which of the following bytes are not scrambled? (Multiple choice)

Which of the following alarms will definitely trigger optical line protection switching? (Multiple choice)

Which of the following options are included in the advantages of Liquid OTN? (Multiple choice)

Which of the following are the benefits of polarization multiplexing technology? (Multiple choice)

When a FAS anomaly is detected, what are the possible options for reporting alarms? (Multiple choice)

Which of the following service interfaces does the transport network equipment provide? (Multiple choice)

Which of the following factors will trigger the automatic switching of the multiplex section protection ring? (Multiple choice)

A and B are adjacent network elements. If A sends B with B3 and low-order errors, and B sends A with B1, B2, B3 and low-order errors, which of the following options are included in...

Which of the following options are considered to be deficiencies of OTN? (Multiple choice)

Which of the following options are available for ODUk SNCP switching conditions? (Multiple choice)

Which of the following options are correct for describing Directed scenes? (Multiple choice)

Compared with WDM, which of the following options are the advantages of OTN? (Multiple choice)

Which of the following options are included in the advantages of TDM equipment? (Multiple choice)

What are the options for the switch's switching mode? (Multiple choice)

Which of the following descriptions about ROADM boards are wrong? (Multiple choice)

Which of the following descriptions of self-healing networks are correct? (Multiple choice)

What are the options for the central wavelength of the pump source in the EDFA structure? (Multiple choice)

The two-fiber bidirectional multiplexing segment shared protection ring requires that the master and standby boards be inserted in dual slots.

FOADM sites can be divided into parallel FOADM and serial FOADM. When the number of waves is large, it is recommended to use parallel FOADM.

SOTU stands for Single Optical Transport Unit Interface, and MOTU stands for Multiple Optical Transport Unit Interface.

In a plane perpendicular to the transmission direction, the optical signal field can have two mutually orthogonal and independent vibration directions, generally named X polarizati...

The RI1/TO1 optical port of the OLP board can be used as both a working channel and a protection channel.

UNS5 board supports mixed transmission of OTN services, SDH services and packet services with a total bandwidth not exceeding 200Gbit/s.

Nonlinear effects are closely related to optical power. To prevent nonlinear effects, the total optical power on the optical fiber should be less than 29dBm.

A subnet can contain other subnets.