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| Section | Objectives |
|---|---|
| Topic 1: Optical Transport Network Fundamentals | - SDH/SONET principles and architecture - WDM system fundamentals - OTN technology and frame structure |
| Topic 2: IPRAN and Converged Transport | - Synchronization and timing in transport networks - IPRAN architecture and deployment scenarios |
| Topic 3: Transmission Network Technologies | - DWDM/ROADM technologies - Optical layer networking and protection mechanisms |
| Topic 4: Network Planning and Maintenance | - Fault management and performance monitoring - Transmission network design principles |
1. XPIC can be used in conjunction with ATPC, but it is generally not recommended.
If it needs to be used together, what should be paid attention to? (multiple choice)
A) The horizontal polarization direction link and vertical polarization direction link of a group of XPIC should be configured with the same ATPC parameters (ATPC enable, ATPC adjustment threshold).
B) Set the ATPC upper and lower threshold difference as small as possible, and the recommended value is 5dB.
C) Set the ATPC lower threshold to be greater than the planned AM sensitivity under the full-capacity modulation mode plus 14dB.
D) If AM is used in conjunction, set the upper threshold of ATPC to the lower threshold plus 5dB.
2. In the process of U2000 network management searching for paths, the path search management module first scans the cross-connections of each network element, constructs sub-paths based on the cross-connections of adjacent network elements, and tries to merge these sub-paths.Which of the following sub-paths are legal?
A) The sub-path ends on the pre-configured network element
B) The source and sink are not the end point of the sub-path or the optical port out of the subnet
C) The sub-path forms a loop
D) The path does not go through the fiber
3. Regarding the configuration description of the U2000 northbound CORBA interface, what is wrong is
A) The default port numbers of normal mode and SSL mode in the basic configuration of U2000 CORBA are different
B) Set the host address, enter the host name or IP address according to the network management plan and design. The "host" mentioned here refers to the computer that provides CORBA services
C) The U2000 northbound CORBA interface and the U2000 server run on the same machine, and the machine configuration is required to be able to install and run the U2000 server, and no additional hardware configuration is required
D) In the U2000 CORBA configuration, configure at least one of the filtering virtual network element switch and virtual network element switch collar
4. Which of the following is correct for the FEC delay relationship ()
A) Typical value of AFEC delay of 40G coherent signal> Typical value of FEC delay
B) 100GSDFEC delay (20%)>100GHFEC delay (7%)
C) The sender increases the overhead for encoding, and the receiver performs decoding, which will bring signal delay.
D) 100GHFEC delay>40GAFEC delay
5. In the reference source monitoring window, if the queried SSM signal is DUS, it means that the clock signal is
A) Clock signal that meets the quality requirements of G.813
B) Unavailable clock
C) Clock signal that meets G.811 quality requirements
D) Clock signal that meets G.812 quality requirements
Solutions:
| Question # 1 Answer: A,B | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: A,B,C | Question # 5 Answer: B |
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