ICT Monthly Test - April 2025

What is secondary memory? Give any three examples

Answer explanation

Secondary memory refers to non-volatile storage used to store data permanently. Examples include hard drives, solid-state drives (SSDs), and USB flash drives.

Describe the difference between impact and non-impact printers. Give an example of each

Answer explanation

Impact printers create images by striking an ink ribbon against paper, like dot matrix printers. Non-impact printers, such as inkjet or laser printers, use methods like spraying ink or laser beams to produce images without direct contact.

List the different uses of multimedia

Answer explanation

Multimedia is used in various fields such as education for interactive learning, entertainment through movies and games, advertising for engaging content, and communication via social media, enhancing user experience and information delivery.

BIOS is contained in ROM and not RAM. Can you guess why?

Answer explanation

BIOS is stored in ROM because it needs to be permanent and not lost when the power is off, unlike RAM, which is volatile. ROM retains data even without power, ensuring the system can boot up reliably.

Explain briefly the different types of computer memory

Answer explanation

Computer memory types include: RAM (volatile, temporary storage), ROM (non-volatile, permanent storage), Cache (high-speed access for frequently used data), and Secondary storage (like HDDs and SSDs for long-term data retention).

Pray is trying to save a folder of his school documents of 1GB on a CD. He is unable to do so. Can you guess why? Suggest an appropriate storage device

Answer explanation

A standard CD has a capacity of 700MB, which is insufficient for a 1GB folder. An appropriate storage device would be a USB flash drive or an external hard drive, as they can easily accommodate larger files.

Give one similarity and one difference between a Digital Versatile Disc and a Blu-ray disc

Answer explanation

Both Digital Versatile Discs (DVDs) and Blu-ray discs are optical storage media used for video and data. However, a key difference is that Blu-ray discs have a higher storage capacity (25GB single-layer) compared to DVDs (4.7GB single-layer).

Provide the 3 limitations of the computers with their simple explanation

Answer explanation

Computers have limitations such as: 1) Lack of common sense, meaning they can't understand context like humans. 2) Dependence on power, as they require electricity to function. 3) Vulnerability to errors, which can arise from software bugs or hardware failures.

Define what the Central Processing Unit (CPU) and mention the three parts of the CPU with their role

Answer explanation

The Central Processing Unit (CPU) is the main component of a computer that performs calculations and processes instructions. Its three parts are the Arithmetic Logic Unit (ALU) for calculations, the Control Unit (CU) for instruction management, and the Registers for temporary data storage.

Give 4 multimedia applications where they are as effective tool for communication

Answer explanation

Multimedia applications like video conferencing, social media, e-learning platforms, and interactive presentations enhance communication by combining text, audio, and visuals, making information more engaging and accessible.