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NEW QUESTION 44
Manual configuration will clear data on the NE side.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 45
For 100G (112 Gbit/s) signals, the actual data baud rate is only 28G baud.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 46
Which of the following bytes in the regenerator section overhead are associated with R-OOF and R-LOF? (Multiple Choice)
- A. B1
- B. B2
- C. A1
- D. A2
Answer: C,D
NEW QUESTION 47
LCK insertion has priority over AIS insertion. That is, if a user configures LCK insertion and the conditions of automatic AIS insertion are met, LCK is inserted.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 48
Which of the following ITLI-T recommendations defines the OTN frame structure?
- A. G.975
- B. G.709
- C. G.694
- D. G.652
Answer: B
NEW QUESTION 49
Which of the following are the device-level protection schemes of SDH products? (Multiple Choice)
- A. Power supply protection
- B. TPS protection
- C. Cross-connect and timing board protection
- D. System control board protection
Answer: A,B,C,D
NEW QUESTION 50
A PAUSE frame uses a reserved multicast address and is not forwarded by a bridge or switch. In this way, the PAUSE frame does not generate any additional information.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 51
Which of the following statements about U2000 license is incorrect?
- A. Do not modify license files. Otherwise, the license files will fail.
- 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. The U2000 license file is named in the "xxxxxxx.dat" format.
- D. Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.
Answer: D
NEW QUESTION 52
Which of the following statements about the definition of SDH is correct?
- A. A hierarchy that can be used for asynchronous digital transmission
- B. A hierarchy of standardized digital signals that can be asynchronously cross-connected
- C. A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection
- D. A hierarchy of standardized digital signals that can be asynchronously multiplexed
Answer: C
NEW QUESTION 53
When severely errored seconds (SESs) are present in the PM section at the ODUk layer, which of the following alarms is reported on the NMS?
- A. ODUk_PM_SES
- B. ODUk_PM_ES
- C. ODUk_PM_SESR
- D. ODUk_PM_UAS
Answer: A
NEW QUESTION 54
Which of the following service levels cannot be selected during service configuration?
- A. VC4
- B. VC3
- C. VC12
- D. VC8
Answer: D
NEW QUESTION 55
The SNCP switching speed can be improved if you classify the SNCP services that have the same source, sink, or route into groups.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 56
Which of the following statements about the EFS4 board are correct? (Multiple Choice)
- A. This board must be used together with a processing board.
- B. This board has four FE ports.
- C. This board supports Layer-2 switching.
- D. The board interface an LC interface.
Answer: B,C
NEW QUESTION 57
Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 58
Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)
- A. ODUk
- B. OTUk
- C. OPUk
- D. OCh
Answer: A,B,C
NEW QUESTION 59
Which of the following clock working modes support the ITU-T G.781 standard? (Multiple Choice)
- A. Free-run
- B. Holdover
- C. Tracing
- D. Master/Slave
Answer: A,B,C
NEW QUESTION 60
Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)
- A. Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.
- B. After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.
- C. The buses of the two cross-connect modules work independently and do not interfere with each other.
- D. The source service board sends services to the active and standby cross-connect boards.
- E. The sink service board can receive only the data from the active cross-connect board.
- F. The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.
Answer: A,C,D,F
NEW QUESTION 61
Which of the following are the steps for multiplexing low-speed services into high-speed SDH services? (Multiple Choice)
- A. Overhead insertion
- B. Mapping
- C. Multiplexing
- D. Alignment
Answer: B,C,D
NEW QUESTION 62
Which of the following is the functional unit that provides the interfaces related to the orderwire phone and serial data for the system?
- A. Cross-connect unit
- B. Tributary unit
- C. Auxiliary unit
- D. Line unit
Answer: C
NEW QUESTION 63
Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?
① The B2 byte indicates the transmission channel.
② The M1 byte indicates the transmission channel.
③ MS-REI is transmitted from the sink to the source.
④ MS-REI is transmitted from the source to the sink.
⑤ Indicates the number of detected bit errors after the sink receives the MS signals.
- A. ②④⑤
- B. ②③⑤
- C. ①③⑤
- D. ①④⑤
Answer: B
NEW QUESTION 64
If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots implement automatic transparent transmission of overhead bytes, such as (), (), and ( ). This improves MSP switching performance and protects DCC communication with other NEs even if the SCC board on the local NE is offline. (Multiple Choice)
- A. E1 byte
- B. K byte
- C. D byte
- D. B1 byte
Answer: A,B,C
NEW QUESTION 65
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