New 2021 H31-311 exam questions Welcome to download the newest TestSimulate H31-311 PDF dumps (190  Q&As)

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NEW QUESTION 26
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. None of the above
• C. Non-auto-negotiation flow control mode
• D. Both of the above

Answer: C

 

NEW QUESTION 27
A 1510 nm optical supervisory channel can be effectively amplified after it passes an EDFA.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 28
A two-fiber ring topology consisting of three NEs is arranged in the counterclockwise sequence as A, B, and C.
Services between A and C occupy the 48th VC-12 timeslot in the first VC-4 on the short path, and services between B and C also occupy the 48th VC-12 timeslot in the first VC-4 on the short path. In this case, which of the following is the subnet type of the ring protection?

• A. All of the above
• B. SNCP ring
• C. Unidirectional path protection ring
• D. Bidirectional MSP ring r

Answer: D

 

NEW QUESTION 29
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 30
Which of the following are basic functions of the U2000? (Multiple Choice)

• A. Alarm management
• B. Security management
• C. Topology management
• D. Performance management

Answer: A,B,C,D

 

NEW QUESTION 31
Which of the following statements about U2000 license is incorrect?

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

Answer: C

 

NEW QUESTION 32
Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)

• A. 1480 nm
• B. 1310 nm
• C. 980 nm
• D. 1510 nm

Answer: A,C

 

NEW QUESTION 33
Which of the following working windows is indicated by "2" in the optical module parameter L-64.2"?

• A. 880 nm
• B. 1310 nm
• C. 1550 nm
• D. 1510 nm

Answer: C

 

NEW QUESTION 34
The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?

• A. The encoding gain of the inband FEC is larger than that of the outband FEC.
• B. The encoding gain of AFEC is larger than that of FEC.
• C. When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
• D. The error correction capability of FEC increases with the encoding gain.

Answer: A

 

NEW QUESTION 35
Which of the following is the maximum number of OSN 3500 subracks that can be installed in a 2.2 m cabinet?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: C

 

NEW QUESTION 36
Which of the following are the differences between AU pointer and TU pointer? (Multiple Choice)

• A. Adjustment unit
• B. Indication range
• C. Number of bits occupied by the pointer value
• D. Byte where the pointer value is stored

Answer: A,B,D

 

NEW QUESTION 37
An optical amplifier unit compensates for line loss and extends transmission distance. Connecting multiple optical amplifier units in cascading mode can infinitely extend transmission distance of a system.

• A. TRUE
• B. FALSE

Answer: B

 

NEW QUESTION 38
Which of the following is not a non-linear effect?

• A. Four-wave mixing (FWM)
• B. Dispersion
• C. Raman scattering
• D. Self-phase modulation (SPM)

Answer: B

 

NEW QUESTION 39
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 40
OChr means that the electrical supervisory technology is used.

• A. TRUE
• B. FALSE

Answer: A

 

NEW QUESTION 41
In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than ( ) wavelengths are used.

• A. 0
• B. 1
• C. 2
• D. 3

Answer: C

 

NEW QUESTION 42
Which of the following is the functional unit that provides the interfaces related to the orderwire phone and serial data for the system?

• A. Line unit
• B. Tributary unit
• C. Cross-connect unit
• D. Auxiliary unit

Answer: A

 

NEW QUESTION 43
Manual configuration will clear data on the NE side.

• A. TRUE
• B. FALSE

Answer: A

 

NEW QUESTION 44
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

Answer: B

 

NEW QUESTION 45
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H31-311 exam questions from TestSimulate dumps: https://www.testsimulate.com/H31-311-study-materials.html (190  Q&As)