Robert Half Assessment Test IT and Programming Concepts 3

Question 1

What is the difference between a compiler and an interpreter?

Accepted Answer

A compiler translates the whole program before execution; an interpreter executes code line by line

Answer

A compiler converts entire source code to machine code before running, while an interpreter translates and executes one line at a time.

Question 2

In networking, what is the function of a firewall?

Accepted Answer

To monitor and filter incoming and outgoing network traffic based on rules

Answer

A firewall enforces security policies by allowing or blocking traffic based on predefined rules.

Question 3

Which of the following best describes cloud computing?

Accepted Answer

Delivering computing services like storage and processing over the internet

Answer

Cloud computing delivers on-demand computing resources — servers, storage, databases, networking — over the internet.

Question 4

What is a binary search algorithm most useful for?

Accepted Answer

Searching for a value in a sorted list efficiently

Answer

Binary search repeatedly halves the search space, making it O(log n) efficient — but it requires the list to be sorted first.

Question 5

What does 'debugging' refer to in software development?

Accepted Answer

Identifying and fixing errors or defects in code

Answer

Debugging is the process of finding, isolating, and resolving bugs or unexpected behavior in software.

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