Latest Huawei H31-311_V2.5 Exam questions and answers
Pass4guide H31-311_V2.5 Exam Practice Test Questions (Updated 200 Questions)
NEW QUESTION 54
The refractive index n1 of the fiber core must be the Q of the cladding refractive Mo n2, which is a necessary condition for transmitting the optical signal in the optical fiber.
- A. is higher than
- B. Equal
- C. Below
Answer: A
NEW QUESTION 55
Which of the following is the main advantage of SDH? (Multiple choice).
- A. Synchronous multiplexing.
- B. High compatibility.
- C. standard interface.
- D. Powerful OAM
Answer: A,B,C,D
NEW QUESTION 56
MSP is a network-level protection scheme. MSF does not directly protect services, and MSP switching and recovery are not affected even if there is no service on the MSP ring.
- A. True
- B. Error
Answer: A
NEW QUESTION 57
When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?
- A. 80G
- B. 156 to pick up the answer
- C. 35G
- D. 58.75G
Answer: B
NEW QUESTION 58
Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.
- A. True
- B. Error
Answer: A
NEW QUESTION 59
The receiver performs a BIP-8 check on unscrambled STM-16 frames. If the BIP8 check result XOR*∶, the value of the B1 byte contained in the next STM16 ring is 10001100, which indicates STM-16 There is a () bit error block in the axis.
- A. 0
- B. 1
- C. is unclear
- D. 2
Answer: D
NEW QUESTION 60
In WDM systems, it is ideal to use a dielectric thin film filter (TFF) when using less than () wavelengths.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 61
Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in 1:1 mode of the LMSP.
- A. True
- B. Error
Answer: A
NEW QUESTION 62
Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice) □
- A. Low noise index
- B. High gain
- C. High output meritorious service
- D. Amplification of any wavelength
Answer: A,B,C
NEW QUESTION 63
Which of the following statements about the MST functional module is correct? (Multiple choice).
- A. MST returns bit error messages, but does not return a specific number of bit errors
- B. MST provides an E20 orderwire channel. .
- C. MST implements BIP-8 statistical computation of B2 bytes.
- D. MST is both the source and sink of MS. .
Answer: B,D
NEW QUESTION 64
The last 256 columns in the OTN frame structure are the FEC regions for forward error correction.
- A. True
- B. Error
Answer: A
NEW QUESTION 65
Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?
- A. Optical release technology
- B. Multiplexing/multiplexing technique
- C. Wavelength conversion techniques
- D. Optical supervision technology
Answer: C
NEW QUESTION 66
Suppose 2 VC-12 time slots need to be bound to the VCTRUNK1 of the N2EFS4 board. When there are 8 VC4 slots on the N2EFS4 board, which of the following slots meets the requirements?
- A. VC-12 time slot 1 and 2 for the first VC4
- B. VC-12 Time slots 1 and 2 for the 8th VC-4
- C. VC-12 time slots for the second VC4 33 and 34
- D. VC-12 time slots 1 and 2 for the fourth VC4
Answer: D
NEW QUESTION 67
Which of the following are the service board types for MSTP devices? (Multiple choice).
- A. Interface board
- B. Service processing board
- C. Service processing board with interface
- D. Auxiliary board
Answer: A,B,C
NEW QUESTION 68
Which of the following is the VLAN classification method? (Multiple choice).
- A. Through the port correct answer).
- B. press Co-set
- C. By subnet
- D. by MAC address correct answer).
Answer: A,B,C,D
NEW QUESTION 69
EPL services use ports and bandwidth exclusively, and different users may need to share resources. Which of the following methods can be used to isolate user data?
- A. QinQ Technical Wood
- B. All of the above
- C. VLAN ID
- D. MPLS tags
Answer: B
NEW QUESTION 70
What of the following operations may interrupt the network element service? (Multiple choice).
- A. Download the network metadata
- B. Look for trails
- C. Activate the trail
- D. search protects the subnet
Answer: A,C
NEW QUESTION 71
Which of the following statements about the U2000 license is incorrect?
- A. Each license file corresponds to the device serial number (ESN) of one U2000 computer, so it can only be used on the corresponding computer.
- B. The U2000 license file xxxxxxx is named .dat format
- C. Do not modify the license file. Otherwise, the license file will fail
- D. Official U2000 licenses vary by operating system platform. You must apply for a U2000 license based on your specific operating system. (Correct answer"
Answer: D
NEW QUESTION 72
The segment overhead of STM-4 is () bytes/frame.
- A. 9*8"4
- B. 9*9*4
- C. 9*8
- D. 9*9*8
Answer: A
NEW QUESTION 73
STM-64 has an () AU pointer.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 74
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
- A. SPI <> RST <> MSA<> MSP<> MST <> HPT
- B. SPT<> MS <> MSA<> RST > MSP<> HPT
- C. SPI <> MST<> RST <> MSA <> MSP >HPT
- D. SPI <> RST <> MST <> MSP<> MSA <> HPT
Answer: D
NEW QUESTION 75
When there is a Critical Error In Seconds (SES) in the PM portion of the ODUk layer, which of the following alarms is reported by NMS?
- A. ODUk_PM_SESR
- B. ODUk_PM_UAS
- C. ODUk_PM_ES
- D. ODUk_PM_SES
Answer: D
NEW QUESTION 76
The index is used to folio and delineate the starting position of VC-n in the corresponding AU or TU frame so that the receiving end can correctly remove the corresponding VC from the STM-N The VC and C packages are then separated into separate low-rate signals, such as PDH That is; Low-rate branch signals can be discarded directly from the STM-N signal
- A. True
- B. Error
Answer: A
NEW QUESTION 77
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