Robert Half Assessment Test IT and Programming Concepts 2

Question 1

Which data structure uses a LIFO (Last In, First Out) access pattern?

Accepted Answer

Stack

Answer

A stack follows LIFO order, where the last element added is the first one removed.

Question 2

What does the acronym API stand for?

Accepted Answer

Application Programming Interface

Answer

API stands for Application Programming Interface, a set of rules allowing software components to communicate.

Question 3

In object-oriented programming, what is encapsulation?

Accepted Answer

Bundling data and methods into a single unit with restricted access

Answer

Encapsulation bundles data and the methods that operate on it into a class, hiding internal details.

Question 4

Which SQL statement is used to retrieve data from a database?

Accepted Answer

SELECT

Answer

The SELECT statement is used to query and retrieve records from one or more database tables.

Question 5

What is the primary purpose of version control systems like Git?

Accepted Answer

To track changes in code and enable collaboration

Answer

Version control systems track code history, allow branching, and enable multiple developers to collaborate without conflicts.

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