Month End Sale Special - 70% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: 70dumps

H31-311 Questions and Answers

Question # 6

The pointer is used for alignment and indicates the start position of VC-n in the corresponding AU or TU frame. In this way, the receive end can correctly remove the corresponding VC from the STM-N, and then split the VC and C encapsulation to separate low-rate signals, such as PDH. That is, low-rate tributary signals can be directly dropped from the STM-N signal.

A.

TRUE

B.

FALSE

Full Access
Question # 7

After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.

A.

TRUE

B.

FALSE

Full Access
Question # 8

Which of the following bytes in the regenerator section overhead are associated with R-OOF and

R-LOF?

(Multiple Choice)

A.

A1

B.

A2

C.

B1

D.

B2

Full Access
Question # 9

Which of the following operations may interrupt NE services? (Multiple Choice)

A.

Searching for protection subnets

B.

Searching for trails

C.

Deactivating trails

D.

Downloading NE data

Full Access
Question # 10

Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?

A.

n indicates the number of wavelengths carried by the maximum capacity.

B.

m indicates the rate. The value can be 1, 2, or 3.

C.

r indicates OTM without the OSC function.

D.

OTM-nr.m with OSC signals is OTM-n.m.

Full Access
Question # 11

When the lower-order resources of a device are insufficient, which of the following measures can be taken? (Multiple Choice)

A.

Configure a VC4 server trail.

B.

Combine available lower-order resources.

C.

Use a cross-connect board with a larger lower-order cross-connect capacity.

D.

Configure VC4 services.

Full Access
Question # 12

Which of the following overhead bytes needs to be processed at an electrical regeneration site?

A.

PM

B.

SM

C.

All of the above

D.

TCM

Full Access
Question # 13

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

A.

Current frame

B.

Next frame

C.

Previous frame

D.

None of the above

Full Access
Question # 14

Which of the following statements about the MST functional module are correct? (Multiple Choice)

A.

The MST is both the source and sink of the MS.

B.

The MST implements the BIP-8 statistics calculation of the B2 byte.

C.

The MST returns bit error information, but not the specific number of bit errors.

D.

The MST provides the E2 orderwire channel.

Full Access
Question # 15

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

A.

MDB

B.

FDB0

C.

FDB1

D.

DRDB

Full Access
Question # 16

During the service configuration between two adjacent sites (NE1 and NE2), if VC4:1 and VC12:l-3 are used on the NEl's line board connected to NE2, the same VC4 and VC12 timeslots must be used on the NE2's line board connected to NE1.

A.

TRUE

B.

FALSE

Full Access
Question # 17

Which of the following alarm/event dumping modes are supported by the U2000? (Multiple Choice)

A.

Manual dumping

B.

Automatic dumping

C.

Overflow dumping

D.

Periodic dumping of alarm logs

Full Access
Question # 18

When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.

A.

TRUE

B.

FALSE

Full Access
Question # 19

In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.

A.

1/10

B.

1/20

C.

1/30

D.

1/40

Full Access
Question # 20

The receive end performs BIP-8 check for the unscrambled STM-16 frame. If the BIP-8 check result XOR the value of the B1 byte contained in the following STM-16 frame is 10001100, it indicates that () bit error blocks exist in the STM-16 frame.

A.

5

B.

3

C.

6

D.

Unclear

Full Access
Question # 21

Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is correct?

A.

SPI< >RST< >MST< >MSP< >MSA< >HPT

B.

SPI< >RST< >MSA< >MSP< >MST< >HPT

C.

SPI< >MST< >RST< >MSA< >MSP< >HPT

D.

SPT< >MST< >MSA< >RST< >MSP< >HPT

Full Access
Question # 22

WDM multiplexes the optical signals at multiple rates (wavelengths) over one fiber for transmission. The digital signals carried by these optical signals must have the same rate and data format.

A.

TRUE

B.

FALSE

Full Access
Question # 23

The working mode of a port determines the flow control mode of the port. When the working mode is 100 Mbit/s full duplex, which of the following flow control modes can be used?

A.

Auto-negotiation flow control mode

B.

Non-auto-negotiation flow control mode

C.

Both of the above

D.

None of the above

Full Access
Question # 24

Which of the following is not the advantage of WDM?

A.

Ultra-large capacity and transparent data transmission

B.

Easy to upgrade and maximizing the protection for existing investments

C.

Completely substituting for SDH devices

D.

Compatible with all optical switching networks in the future

Full Access
Question # 25

The section overhead of STM-4 is () bytes/frame.

A.

9*9*4

B.

9*8*4

C.

9*9*8

D.

9*8

Full Access
Question # 26

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

A.

Preamble

B.

Frame check sequence

C.

Start frame delimiter

D.

Payload

Full Access
Question # 27

Which of the following are the device-level protection schemes of SDH products? (Multiple Choice)

A.

Power supply protection

B.

Cross-connect and timing board protection

C.

System control board protection

D.

TPS protection

Full Access