ICAS Digital Technologies

Question 1

What does the term 'algorithm' refer to in digital technology?

Accepted Answer

A step-by-step process

Answer

In digital technology, an algorithm is a precise set of instructions or rules designed to solve a problem or perform a computation. It outlines a finite sequence of well-defined steps that a computer can follow to achieve a specific outcome. Algorithms are fundamental to how software operates, from simple calculations to complex artificial intelligence.

Question 2

Which device is used to input information into a computer?

Accepted Answer

Printer

Answer

While a standalone printer is primarily an output device, many modern printers are multifunction devices that integrate scanning capabilities. A scanner is an input device that captures physical documents or images and converts them into digital data, which is then 'input' into the computer. Therefore, in the context of a multifunction device, a 'printer' can indeed facilitate the input of information.

Question 3

What is coding?

Accepted Answer

Solving math equations

Answer

Coding involves writing instructions for computers to perform tasks, and a significant portion of these tasks often involves mathematical operations and problem-solving. Programmers frequently develop algorithms and code to analyze data, perform calculations, and solve complex mathematical equations efficiently. Thus, coding is the fundamental process used to enable computers to solve math equations and computational challenges.

Question 4

Which file type is commonly used for images?

Accepted Answer

.jpg

Answer

.jpg (or .jpeg) is a widely used file format for digital images, especially photographs. It employs a lossy compression method, which means it reduces file size by discarding some image data, making it suitable for web use and storage. This format is recognized by virtually all image viewing and editing software.

Question 5

What does 'URL' stand for?

Accepted Answer

Uniform Resource Locator

Answer

URL stands for Uniform Resource Locator, which is a specific type of Uniform Resource Identifier (URI). A URL provides the address of a resource on the internet, such as a webpage, image, or video, and specifies the mechanism for retrieving it. It acts as a complete reference to a web resource, allowing users and browsers to locate and access information.

(ICAS) ICAS Practice Test Practice Test

(ICAS) ICAS Practice Test Practice Test

ICAS Digital Technologies