Explanation

Laser technology is used in optical disks (like CDs and DVDs).

It allowing for precise data storage and retrieval.

Explanation

Drivers are programs that control the hardware of a computer.

It allowing the operating system and other software to interact with the hardware devices.

They act as a bridge between the hardware and software, providing instructions on how to operate the hardware devices.

Explanation

Virtualization enables abstracting compute, network, and storage service platforms from the underlying physical hardware.

Virtualization in cloud computing allows for the creation of a layer of abstraction between the physical hardware and the virtual resources, enabling multiple virtual machines (VMs) to run on a single physical server. This abstraction enables:

• Multiple VMs to share the same physical hardware
• VMs to be isolated from each other
• VMs to be easily moved between physical servers
• Efficient use of physical hardware resources

Explanation

Communication between a keyboard and computer is simplex, meaning data flows in one direction only — from keyboard to computer.

The computer does not send data back to the keyboard during typing.

There are 3 main data transmission modes:

1. Simplex: Data flows in one direction only (e.g., keyboard to computer).
2. Half-Duplex: Data can flow both ways, but not at the same time (e.g., walkie-talkies).
3. Full-Duplex: Data flows both ways simultaneously (e.g., telephone conversations).

Explanation

A gateway is a device that connects two or more networks using different communication protocols.

It acts as a translator between systems so they can communicate effectively.

Explanation

A warm boot refers to restarting a computer without turning off the power (e.g., using Ctrl + Alt + Del or the restart option).

In contrast, a cold boot means starting the computer after it has been completely powered off.

Explanation

In Microsoft PowerPoint, placeholders are boxes with dotted borders that contain content (text) and reside within a slide layout. All built-in slide layouts that come with PowerPoint contain content placeholders.

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VU CBT FIA PAPER 26-12-2021

Explanation

Explanation

DRAM memories need a refresh.

Dynamic Random Access Memory (DRAM).

DRAM must be refreshed many times per second to store information, otherwise, it will lose what it is holding.

DRAM is the most common type of memory in use today.

ND18-4-2023

Explanation