NOCTI Computer Science 3

Question 1

What is the purpose of a DNS (Domain Name System) server?

Accepted Answer

To translate domain names into IP addresses

Answer

DNS servers translate human-readable domain names (like www.example.com) into numerical IP addresses that computers use to identify each other on the network.

Question 2

In programming, what is a recursive function?

Accepted Answer

A function that calls itself

Answer

A recursive function is one that calls itself within its own definition, typically breaking a problem into smaller subproblems until reaching a base case.

Question 3

What is the primary function of an operating system's kernel?

Accepted Answer

To manage hardware resources and provide services to applications

Answer

The kernel is the core of an operating system that manages hardware resources (CPU, memory, I/O devices) and provides essential services that applications need to run.

Question 4

Which sorting algorithm has the best average-case time complexity?

Accepted Answer

Merge sort with O(n log n)

Answer

Merge sort has an average (and worst-case) time complexity of O(n log n), which is optimal for comparison-based sorting algorithms.

Question 5

What does the acronym API stand for in software development?

Accepted Answer

Application Programming Interface

Answer

API stands for Application Programming Interface, which defines how software components should interact and communicate with each other.

NOCTI - National Occupational Competency Testing Institute Practice Test

NOCTI - National Occupational Competency Testing Institute Practice Test

NOCTI Computer Science 3