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NEW QUESTION 60
Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?
- A. m indicates the rate. The value can be 1, 2, or 3.
- B. OTM-nr.m with OSC signals is OTM-n.m.
- C. n indicates the number of wavelengths carried by the maximum capacity,
- D. r indicates OTM without the OSC function..
Answer: A
NEW QUESTION 61
During the backup and restoration of the network configuration data of the U2000 using scripts, you can change the directory for saving the exported files.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 62
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
- A. HP_SLM
- B. LP_TEM
- C. HP_TIM
- D. RS_TEM
Answer: C
NEW QUESTION 63
Which of the following communication protocols are used for DCN management on Huawei devices? (Multiple Choice)
- A. OSI
- B. TCP/IP
- C. FTP
- D. HWECC
Answer: A,B,D
NEW QUESTION 64
Which of the following are VLAN classification methods? (Multiple Choice)
- A. By MAC address
- B. By protocol
- C. By port
- D. By subnet
Answer: A,B,C,D
NEW QUESTION 65
OChr means that the electrical supervisory technology is used.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 66
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 67
Which of the following statements about basic LCAS functions are correct? (Multiple Choice)
- A. New NEs and links are automatically discovered.
- B. An error tolerance mechanism is provided to enhance the robustness of the virtual concatenation function.
- C. The bandwidth is dynamically increased or decreased.
- D. The failure members are protected and recovered.
Answer: B,C,D
NEW QUESTION 68
For an OSN 3500, which of the following boards provides the centralized backup function for the +3.3 V power supply of each board in the subrack?
- A. AUX
- B. SCC
- C. COA
- D. PIU
Answer: A
NEW QUESTION 69
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 70
Which of the following are the components of a WDM system multiplexing N wavelengths? (Multiple Choice)
- A. Supervisory unit
- B. Optical transponder unit
- C. Optical amplifier unit
- D. Wavelength division multiplexing unit
Answer: A,B,C,D
NEW QUESTION 71
The difference between a dispersion compensation fiber and a common fiber is that the dispersion compensation fiber has a negative dispersion coefficient at ().
- A. 1310 nm
- B. 1650 nm
- C. 800 nm
- D. 1550 nm
Answer: D
NEW QUESTION 72
Which of the following device domains can be managed by the U2000? (Multiple Choice)
- A. Access device
- B. Data communication device
- C. Transport device
- D. Wireless device
Answer: A,B,C,D
NEW QUESTION 73
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 74
Which of the following are the service board types of MSTP devices? (Multiple Choice)
- A. Auxiliary board
- B. Service processing board
- C. Interface board
- D. Service processing board with interfaces
Answer: B,C,D
NEW QUESTION 75
When bit errors are detected in the B2 byte, which of the following alarms is reported by the peer end?
- A. MS-AIS
- B. MS-FEBBE
- C. MS-BBE
- D. RS-BBE
Answer: B
NEW QUESTION 76
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. TRUE
- B. FALSE
Answer: A
NEW QUESTION 77
In an OSN 550, the CXL slot houses a functional board that integrates the system control and communication (SCC) unit, cross-connect unit, and clock unit. The functional board is available in multiple types depending on the functions and access capabilities provided by the OSN 550.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 78
When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 79
Which of the following bridges is used to forward data based on the MAC address and VLAN ID carried in data?
- A. 802.11ab
- B. 802.1q
- C. 802.1a
- D. 802.1d
Answer: B
NEW QUESTION 80
When synchronization is performed on the U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 81
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 82
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 83
Which of the following is the functional unit that provides the interfaces related to the orderwire phone and serial data for the system?
- A. Auxiliary unit
- B. Tributary unit
- C. Line unit
- D. Cross-connect unit
Answer: A
NEW QUESTION 84
MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 85
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