CodeHS Software Development and App Development Accreditations 5

Question 1

What is the purpose of using 'comments' in source code?

Accepted Answer

To explain logic and improve code readability for developers

Answer

Comments are ignored by the compiler/interpreter and serve to document code intent for human readers.

Question 2

In software development, what is a 'bug'?

Accepted Answer

An error or flaw that causes incorrect or unintended behavior

Answer

A bug is an unintended defect in code that causes a program to behave incorrectly or crash.

Question 3

Which HTML tag is used to link an external CSS stylesheet to a webpage?

Accepted Answer

<link>

Answer

The tag in the section connects an external CSS file to an HTML document.

Question 4

In app development, what is a 'callback function'?

Accepted Answer

A function passed as an argument and executed after another function completes

Answer

Callback functions are passed into other functions and invoked once that function finishes, enabling asynchronous behavior.

Question 5

What distinguishes a compiled language from an interpreted language?

Accepted Answer

Compiled languages are translated to machine code before execution; interpreted languages are translated line-by-line at runtime

Answer

Compilation converts the entire program to machine code ahead of time, while interpretation processes code line by line during execution.

(CodeHS) Code High School Certifications Practice Test