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NEW QUESTION 20
Which of the following operations may interrupt NE services? (Multiple Choice)
- A. Downloading NE data
- B. Searching for trails
- C. Searching for protection subnets
- D. Deactivating trails
Answer: A,D
NEW QUESTION 21
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 22
An unprotected chain consists of four NEs: NE1, NE2, NE3, and NE4. An end-to-end VC4 trail NE1-NE4 is created, and NE5 is added between NE2 and NE3 for capacity expansion. The original configuration remains unchanged, and no service is configured on NE5. In this case, the unprotected chain becomes NE1-NE2-NE5-NE3-NE4, and how many VC4 trails can be searched out?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 23
In ITU-T G.692 recommendations, the allowed channel frequency is based on the reference frequency ( ) and the channel spacing can be 100 GHz, 50 GHz, or 25 GHz.
- A. 192.1 THz
- B. 196.1 THz
- C. 194.1 THz
- D. 193.1 THz
Answer: D
NEW QUESTION 24
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 25
The SNCP switching speed can be improved if you classify the SNCP services that have the same source, sink, or route into groups.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 26
A MAC address consists of 46 bits and is globally unique.
Which of the following is the meaning of the MAC address whose eighth bit is 1?
- A. Multicast address
- B. Unicast address
- C. Bicast address
- D. Broadcast address
Answer: A
NEW QUESTION 27
SDH signals must be scrambled before being transmitted over optical fibers.
Which of the following bytes are not scrambled? (Multiple Choice)
- A. A2
- B. J0
- C. A1
- D. J1
Answer: A,B,C
NEW QUESTION 28
The single-fiber bidirectional WDM system uses only one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be arranged at different wavelengths.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 29
The OSN 1500/2500/3500/7500 supports both DC and AC power inputs.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 30
The K1 and K2 bytes can transmit APS switching signaling, and can also indicate that the multiplex section signal fails.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 31
Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?
- A. Multiplexing/Demultiplexing technology
- B. Optical amplification technology
- C. Wavelength conversion technology
- D. Optical supervisory technology
Answer: C
NEW QUESTION 32
Which of the following statements about an MSP ring are correct? (Multiple Choice)
- A. When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.
- B. "Assigned by VC4" means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.
- C. The number of nodes on an MSP ring cannot exceed 16.
- D. When multiple protection subnets occupy the same port on the same board, you must select "Resource Sharing".
Answer: A,B,C,D
NEW QUESTION 33
Which of the following statements about the definition of SDH is correct?
- A. A hierarchy of standardized digital signals that can be asynchronously cross-connected
- B. A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection
- C. A hierarchy of standardized digital signals that can be asynchronously multiplexed
- D. A hierarchy that can be used for asynchronous digital transmission
Answer: B
NEW QUESTION 34
In the Windows operating system, the log files of the U2000 program are stored in the () directory of the U2000 installation drive.
- A. /U2000/client
- B. /U2000/client/log
- C. /U2000/server/log
- D. /U2000/server
Answer: C
NEW QUESTION 35
Which of the following statements about clock sources is incorrect?
- A. Generally, tributary clocks are not used as the clock sources of devices.
- B. The same SSM protocol is selected for all NEs in a clock protection subnet.
- C. Internal clock sources have the lowest priority because of their low precision.
- D. If the standard SSM protocol is enabled, you need to set the clock source ID.
Answer: D
NEW QUESTION 36
When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.
- A. MS-AIS
- B. MS-RDI
- C. R-LOF
- D. R-LOS
Answer: B
NEW QUESTION 37
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 38
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