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Computer Systems Analyst

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AVG. SALARY

$89,800

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EDUCATION

Bachelor's degree

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JOB OUTLOOK

Stable

Real-Life Activities

Real-Life Math -- Solution

You're calculating transmission speeds for two different networks.

Part 1

  1. How long will it take data to travel along the network from LA to Chicago?
  2. transmission time = distance / propagation speed

    transmission time = 2,000 miles / 186.282 miles per second

    transmission time = 0.011 seconds, or 11 milliseconds

Data will take 3 milliseconds to travel this route.

Part 2

  1. How long will it take data to travel along the network from LA to Dallas?

    transmission time = distance / propagation speed

    transmission time = 1,500 km / 186,282 miles per second

    transmission time = 0.008 seconds, or 8 milliseconds

    Data will take 8 milliseconds to travel this route.

Part 3

  1. Which option is faster? By what percentage?

    If the Chicago route takes 11 milliseconds and the Dallas route takes 8 milliseconds, the Dallas route is 3 milliseconds faster.

    percentage difference = 3 / 11 x 100

    percentage difference = 27

    The transmission time through the Dallas route is 27 percent faster than through the Chicago route.

    "What really comes of the math skills is pattern-based thinking, which is essential for pretty much every aspect of working with or programming computers," says systems analyst Curtis Linton.


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