CS Programming & Software Development 2

Question 1

A function calls itself with no condition that stops the calls. What is the most likely runtime result?

Accepted Answer

A stack overflow error

Answer

Recursion without a base case keeps pushing stack frames until the call stack overflows.

Question 2

Which principle is violated when the same block of validation code is copied into five different functions?

Accepted Answer

DRY (Don't Repeat Yourself)

Answer

DRY states that duplicated logic should be factored into a single reusable location.

Question 3

In a language with zero-based indexing, what does arr[3] refer to in the array [10, 20, 30, 40, 50]?

Accepted Answer

40

Answer

With zero-based indexing, index 3 is the fourth element, which is 40.

Question 4

A developer wants two versions of a feature tested on the same codebase without affecting the main release. Which version control practice fits best?

Accepted Answer

Creating separate branches

Answer

Branches isolate parallel lines of development from the main codebase.

Question 5

Which of the following is an example of an infinite loop?

Accepted Answer

while (x > 0) { print(x); } where x starts at 5 and never changes

Answer

Since x is never modified inside the loop, the condition x > 0 stays true forever.

(CS) Computer Science Practice Test