In the context of data communication, which of the following media is based on "line of sight"?
A) A terrestrial microwave
B) A mechanical wave
C) A coaxial cable
D) A fiber-optic cable
A
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When you're selecting people to participate in a survey, it is critical to get a ________ of the population you want to survey
A) stratified sample B) crossover sample C) sizeable sample D) transparent sample E) representative sample
What is the minimum completion cost of this project if there is a penalty of $1,000 for each day the project lasts longer than 27 days? Activity durations in days and crash costs in dollars are given in the table
Activity Reg Length Crash Length Reg Cost Crash Cost Activity Reg Length Crash Length Reg Cost Crash Cost A 7 6 400 1,200 L 7 5 800 1,500 C 1 1 450 450 N 6 5 500 1,250 D 9 6 550 2,350 R 4 4 600 600 E 9 7 500 1,650 S 10 8 450 1,350 J 2 1 600 1,800 Y 8 6 675 1,750