Hitch Questionnaire - Hitch Interactive

Hitch2049 Robotics Academy Enrollment Prerequisite Test

You can answer the following questions with the help of a computer and the Internet. Some questions are meant to be open-ended to evaluate your existing knowledge on the subjects on math, coding, and computer systems.

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1. Q: What is your most familiar computer OS? Did you choose the OS versus some other OS?

2. Q: What are the differences between Wi-Fi and Bluetooth? What is an IP address? How to find the IP address of a computer?

3. Q: How do you power your computer via AC or DC? What is the voltage of AC in the US? What is the voltage of DC power an USB port can provide?

4. Q: How is each pixel in a color image represented in computers? For a 640-by-480 color image, how do you allocate a memory buffer to store it?

5. Q: What are the typical types of variables in a programming language to store numbers?

6. Q: How does a programming language store text lines?

7. Q: Using your familiar language, please write a function maxColumnValues() with a 2-D float array as its input and outputting the maximal values of all the columns of the array as another 1- D array.

8. Q: For a function ReLU(x) ≐ max(x,0), what is its minimal value? What is its derivative (namely, rate of growth)?

9. Q: Find the values for (unknown variable x1, x2) that satisfy two linear equations 1 = 2x1 + 3x2; 4 = 5x1 + 6x2.

10. Q: If you have used Git as a version control system before, please provide two git commands that create a new branch named dev_branch, and then force set dev_branch to be the same as the master branch.

Hitch2049 Robotics Academy Enrollment Prerequisite Test

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