Huawei H31-311-ENU Premium Exam Engine pdf - Download Free Updated 190 Questions

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NEW QUESTION 43
Which of the following is the multiplexing mode of SDH?

• A. Flexible mapping
• B. Flexible mapping and synchronous multiplexing
• C. Asynchronous multiplexing
• D. Flexible mapping and asynchronous multiplexing

Answer: B

 

NEW QUESTION 44
Linear MSP (LMSP) has two modes: 1+1 and 1:1. Extra services can be configured for the protection channel only in the 1:1 mode of LMSP.

• A. TRUE
• B. FALSE

Answer: A

 

NEW QUESTION 45
The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through Q, and HP-REI and HP-FEBBE are reported at the transmit end.

• A. J (b1-b4)
• B. G1 (b1-b4)
• C. K3 (b1-b4)
• D. G1 (b5-b8)

Answer: B

 

NEW QUESTION 46
Which of the following statements about ODUk_PM_BDI is correct?

• A. ODUk PM open connection indication
• B. ODUk PM signal degrade
• C. ODUk PM section BIP8 bit error threshold crossing
• D. ODUk PM backward defect indication

Answer: D

 

NEW QUESTION 47
Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

 

NEW QUESTION 48
The EPL service exclusively uses bandwidth on the line, which is highly secure. It is applicable to the private line application of VIP customers.

• A. TRUE
• B. FALSE

Answer: A

 

NEW QUESTION 49
Which of the following is not the northbound interface provided by the U2000?

• A. XML
• B. SNMP
• C. Qx
• D. CORBA

Answer: C

 

NEW QUESTION 50
Which of the following statements about U2000 license is incorrect?

• A. The U2000 license file is named in the "xxxxxxx.dat" format.
• B. Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.
• C. Each license file corresponds to the equipment serial number (ESN) of one U2000 computer, and therefore can be used only on the corresponding computer.
• D. Do not modify license files. Otherwise, the license files will fail.

Answer: B

 

NEW QUESTION 51
In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 52
TU-AIS is frequently encountered during network maintenance.
Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)

• A. HP-TIM
• B. AU-LOP
• C. B2-EXC
• D. R-LOS

Answer: A,B,C,D

 

NEW QUESTION 53
According to ITU-T recommendations, the requirement that the MSP switching time should be within 50 ms is conditional. For example, the number of NEs on an entire ring network is less than 16.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 54
On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 55
Which of the following statements about extended ECC is incorrect?

• A. Extended ECC is classified into automatic extended ECC and extended ECC in specified mode.
• B. Automatic extended ECC indicates using a straight-through cable to connect the Ethernet ports of two NEs.
• C. Automatic extended ECC can be enabled on a maximum of four NEs. In manual extended ECC mode, each server can be connected to a maximum of three clients.
• D. Extended ECC in specified mode indicates that the server and client need to be specified.

Answer: C

 

NEW QUESTION 56
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. 0
• B. 1
• C. Unclear
• D. 2

Answer: B

 

NEW QUESTION 57
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.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 58
After PDH services are configured on a per-NE basis, a complete trail cannot be searched out.
Which of the following are possible causes? (Multiple Choice)

• A. Pass-through is not configured at intermediate sites.
• B. Timeslot configuration is incorrect.
• C. Tributary board selection is incorrect.
• D. Line board selection is incorrect.

Answer: A,B,D

 

NEW QUESTION 59
Which of the following are optical-layer trails? (Multiple Choice)

• A. OSC
• B. OMS
• C. OCh
• D. OTS

Answer: A,B,C,D

 

NEW QUESTION 60
The fiber core refractive index n1 must be Q the cladding layer refractive index n2, which is a necessary condition for transmitting optical signals in optical fibers.

• A. equal to
• B. higher than
• C. lower than

Answer: B

 

NEW QUESTION 61
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