If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is:
A. 3 dB
B. 30 dB
C. 40 dB
D. 20 dB
E. 1000 dB
正解:B
質問 2:
What is the International Organization for Standardization/International Electrotechnical Commission ISO/IEC class rating for American National Standards Institute/Telecommunication Industry Association (ANSI/TIA) Category 5e cable?
A. Class D
B. Class C
C. Class F
D. Class E
E. Class B
正解:A
質問 3:
The recommended MINIMUM number of conduits connecting two located on the same floor is:
A. Two; 100 mm (trade size 4)
B. One; 75 mm (trade size 3)
C. One; 100 mm (trade size 4)
D. Two; 75 mm (trade size 3)
正解:B
質問 4:
The MINIMUM finished height of access flooring in a general office area is:
A. 200 mm (8 in)
B. 50 mm (2 in)
C. 150 mm (6 in)
D. 300 mm (12 in)
E. 250 mm (10 in)
正解:A
質問 5:
Which area of project management covers the blending of various subteams into a project organization with a cohesive plan?
A. Communications management
B. Risk management
C. Integration management
D. Human resources management
正解:C
質問 6:
What type of estimate is based on the cost of performing similar work in the past, adjusted for current job conditions?
A. Engineering
B. Analogous
C. Parametric
D. Ledger
E. PERT
正解:B
質問 7:
The MOST common medium used to provide service to the access point (AP) is ________ cable.
A. Multimode optical fiber
B. Balanced twisted pair
C. Singlemode optical fiber
D. Unbalanced twisted pair
正解:B
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