Explanation

Explanation

FM, AM radios, televisions, and cordless phones commonly use radio waves for wireless communication and signal transmission.

Radio waves can travel long distances and are ideal for broadcasting audio and video signals.

Explanation

Security is the most important concern of cloud computing.

Cloud computing presents many unique security issues and challenges. 

Amazon, Microsoft and Google are the three largest public cloud storage providers.

Dropbox, eFolder, IBM etc. are examples of cloud service providers.

Explanation

In relational database terminology, an attribute refers to a field or column in a table.

Each attribute represents a property or characteristic of an entity.

Explanation

Scratch is a visual programming language where users create programs by dragging and connecting code blocks.

It is mainly used for educational purposes to teach programming concepts in a simple, interactive way.

Explanation

Hertz (Hz) is the unit used to measure the frequency of an analog signal, and higher frequency means higher bandwidth.

Bandwidth in analog signals refers to the range of frequencies, which is expressed in Hertz.

Explanation

Boot sector viruses often spread through .exe files, which are executable and can run malicious code when opened.

These files can infect the boot sector when the system starts, making them a common carrier for such viruses.

Explanation

Windows is an operating system developed by Microsoft Corporation.

It is widely used on personal computers.

It offers a graphical user interface (GUI).

Explanation

In Consolidated Data Distribution, all data is stored at one central site.

This simplifies management but may reduce access speed for remote users.

Explanation

PROM is Programmable Read-Only Memory, which can be written only once and cannot be modified or erased.

If an error occurs, the chip must be replaced, not corrected or reformatted.