2026 Valid H31-341_V2.5 Exam Updates - 2026 Study Guide
H31-341_V2.5 Certification - The Ultimate Guide [Updated 2026]
NEW QUESTION # 30
E1 has framing, multi-framing and non-framing. The main difference is that the time slots for effective data transmission are different.
- A. True
- B. False
Answer: A
NEW QUESTION # 31
E&M signals define a connection type between a relay device and a signaling unit. Which of the following are relay devices?
- A. PBX
- B. Softswitch platform
- C. E&M Voice Exchange
- D. Telecom exchange
Answer: D
NEW QUESTION # 32
Which of the following options conform to the principles of coherent system commissioning? (Multiple choice)
- A. Adjust the optical power according to the nominal value of the optical amplifier board
- B. Adjust the optical power according to the maximum value of the optical amplifier board
- C. The range of received optical power at the WDM side of the 0TU board is preferably -16dBm~0dBm
- D. The range of received optical power at the wavelength division side of the OTU board is preferably -12dBm~-5dBm
Answer: A,D
NEW QUESTION # 33
Which of the following description about the Optix OSN 9800 subrack is correct? (Multiple choice)
- A. Only when the OSN 9800 P18 is used as a slave subrack, the IU18 slot can be inserted with a service board.
- B. When the OSN 9800 general platform subrack is used as a slave subrack, the main control board must be placed.
- C. The OSN 9800 U16 subrack has a total of 16 service slots. These slots have the same capacity, and the maximum support for a single slot is 400bit/s ODUk crossover.
- D. In the OSN 9800 U32 subrack, IU70 is the active CTU and IU78 is the backup CTU.
Answer: A,C,D
NEW QUESTION # 34
Which of the following descriptions about 0TN frame structure overhead is wrong?
- A. FAS framing failure will generate OTUK_LOF
- B. The value of FAS changes dynamically with different signals
- C. FAS does not participate in scrambling
- D. FAS is located at the beginning of the OTN frame structure
Answer: B
NEW QUESTION # 35
Which of the following are the commissioning principles for the fiber-in optical power? (Multiple choice)
- A. It is recommended that the index value of the incoming fiber optical power be adjusted strictly according to the network design documents.
- B. The index value of incoming fiber power adopts the main incoming fiber power of each fiber by default.
- C. The index value of fiber-entry power adopts the non-standard fiber-entry power of each fiber by default.
- D. The principle of fiber input power index and downstream optical amplifier adjustment is to ensure that the fiber input power index meets the requirements.
Answer: A,B,D
NEW QUESTION # 36
The optical and electronic racks of the OSN 9800 equipment communicate through master-slave sub-rack cascading, and are connected through the GE1/2 ports on the CTU single board.
- A. True
- B. False
Answer: A
NEW QUESTION # 37
TDM PWE3 is also called the CES service carried by PWE3. It supports SAToP and CESoPSN modes.
Which of the following statements about the two emulation modes is false?
- A. The number of E1 frames that are encapsulated in a CESoPSN packet is determined by the value of
"Packet Loading Time". The period of a TDM frame is 125 us. As a result, if the value of "Packet Loading Time" is 1 ms, each PW packet will load eight TDM frames. - B. In SAToP mode, overheads and payloads in TDM signals are transparently transmitted, and alarms can be transparently transmitted.
- C. In SAToP mode, the frame structure of TDM signals does not need to be identified, and the TDM signals are processed as serial data bit streams, divided into TDM bit streams by integer multiple of the E1 frame length, and then encapsulated into PWE3 packets for transmission.
- D. The control word of SAToP packets is optional.
Answer: D
Explanation:
RFC 4553 mandates the inclusion of the SAToP control word on every packet, so it is not optional.
NEW QUESTION # 38
The setting of alarm reversal is based on?
- A. Network element
- B. port
- C. Single board
- D. Alert
Answer: B
NEW QUESTION # 39
Which of the following descriptions about the business boundary label and PW encapsulation mode is wrong?
- A. When the service demarcation tag is User, the PE device does not recognize and process the U-TAG.
- B. When the service boundary tag is Service, the PE device will identify and process the TAG according to the PW encapsulation mode.
- C. PW encapsulation mode supports Raw mode and Tag mode.
- D. The device supports configuring the requested VLAN values for the PWs set to Tag mode, and the T-PID values contained in the requested VLANs can be repeated.
Answer: D
NEW QUESTION # 40
The interval between two adjacent pointer alignment events is at least () frames.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 41
Compared with ROADM, FOADM networking has some shortcomings. Which of the following are the shortcomings of FOADM networking? (Multiple choice)
- A. Unable to achieve timely wavelength service activation
- B. Node expansion and business adjustment require O&M personnel to go to the site for support
- C. It is generally necessary to manually adjust the power budget on site during node expansion, and remote automatic adjustment cannot be realized
- D. Wavelength allocation is based on planning. Once allocated, it is difficult to change the wavelength and the network elasticity is poor.
Answer: A,B,C,D
NEW QUESTION # 42
The overhead ratio is a factor that affects the error correction capability of FEC technology. Generally, under the same FEC encoding/decoding algorithm conditions, the higher the overhead ratio, the greater the net coding gain
- A. True
- B. False
Answer: A
NEW QUESTION # 43
Which of the following alarms will not be generated for the alarm?
- A. HP-TIM
- B. MS-AIS
- C. R-LOS
- D. TU-AIS
Answer: C
NEW QUESTION # 44
The frame alignment signal is used for signal frame alignment. When the system detects FAS abnormality, it reports () or 0Uk 10FLo alarm.
Answer:
Explanation:
OTUK-LOF
NEW QUESTION # 45
Which of the following options meet the characteristics of ROADM networking? (Multiple choice)
- A. During network maintenance, wavelength services can be modified quickly and efficiently, saving maintenance costs
- B. With power equalization function, it can realize power equalization at channel level
- C. Low cost of network construction
- D. When upgrading services, existing services may not be affected
Answer: A,B,D
NEW QUESTION # 46
Which of the following statements are true about the EFS4 circuit board? (Multiple choice)
- A. The board supports Layer 2 switching
- B. This board must be used with the processing board
- C. The board has four FE ports
- D. The board interface is LC interface
Answer: A,C
NEW QUESTION # 47
Which of the following descriptions about the system architecture of 0ptiXtrans E6600/OptiX OSN 1800 is correct?
- A. E6608T/E6608/E6616 or 1800 II TP/1800 II Pro/1800 V Pro adopt L0+L1+L2 three-layer structure.
- B. E6608T/E6608 or 1800 II TP/1800 II Pro adopt L0+L1+L2 three-layer structure.
- C. Both E6616 and 1800 V Pro adopt L0+L1+L2 three-layer architecture.
- D. E6608T/E6616 or 1800 II TP/1800v Pro adopt L0+L1+L2 three-layer structure.
Answer: C
NEW QUESTION # 48
In the link aggregation group setting scenario, which of the following descriptions about port priority is correct? (Multiple choice)
- A. Port priority and the smaller the value, the higher the priority
- B. Ports with low priority carry services first
- C. Port priority does not work for LAGs that do not run the LACP protocol (such as manual aggregation groups)
- D. If the primary port is configured to carry services first, the port priority of this port needs to be configured higher than that of other ports
Answer: A,C,D
NEW QUESTION # 49
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