NVS Catering Supervisor Free Mock Test – Computers

A nibble is a unit of digital information storage that consists of four bits, or half of a standard byte. In computing, it is often used in contexts where data is processed or represented in smaller increments than a full byte.

Nibbles are commonly used in low-level programming, particularly in tasks involving binary-coded decimal (BCD) arithmetic, where each nibble represents a single decimal digit. Additionally, in hexadecimal notation, each nibble corresponds to a single hexadecimal digit (0-9 and A-F), allowing for concise representation of binary data.

The correct size order of memory from smallest to largest is Kilobyte (KB) - Megabyte (MB) - Gigabyte (GB) - Terabyte (TB).

A file infector virus spreads by attaching itself to executable files and programs. When the infected file is executed, the virus code is activated and can spread to other files on the system.

One of the primary advantages of cloud computing is on-demand access to computing resources, such as servers, storage, databases, networking, software, and analytics, over the internet. Users can quickly provision and release resources as needed, paying only for what they use, without the need for upfront investments in infrastructure.

IoT stands for Internet of Things, which refers to the network of physical objects (devices, vehicles, appliances, etc.) embedded with sensors, software, and other technologies to connect and exchange data with other devices and systems over the internet.

A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It is not a type of computer virus.

RAM (Random Access Memory) is a type of computer memory that is volatile, meaning it loses its stored data when the power is turned off. It is used by the computer's operating system and applications to store data temporarily for quick access.

Cloud computing refers to the delivery of computing services, including storage, servers, databases, networking, software, and analytics, over the internet (the cloud) to offer faster innovation, flexible resources, and economies of scale.

A computer virus is a type of malicious software that can replicate itself and spread to other computers by attaching itself to other programs or files. It can cause harm to a computer system by corrupting files, stealing data, or disrupting normal operations.

Microsoft Excel is a spreadsheet application developed by Microsoft. It is widely used for creating, editing, and analyzing numerical data in tabular form.

URL stands for Uniform Resource Locator, which is a reference to a web resource that specifies its location on a computer network and the mechanism for retrieving it, such as a web page, image, or video.

ZIP is a common file format used for compressing files and folders to reduce their size for storage or transmission over the internet. It allows multiple files to be packaged into a single archive file.

A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Its primary function is to prevent unauthorized access to or from a private network while allowing legitimate communication.

HTML (Hypertext Markup Language) is the standard markup language for creating web pages and web applications. It is widely used for web development alongside other languages like CSS and JavaScript.

A keyboard is an input device that allows users to input text and commands into the computer.

A router is a networking device that forwards data packets between computer networks. It is used to connect computers in different locations and manage traffic between them.

An operating system (OS) is software that manages computer hardware and provides common services for computer programs. It provides a user interface and manages computer resources such as memory, processors, devices, and file systems.

The CPU (Central Processing Unit) is the primary component of a computer that performs most of the processing inside the computer.

RAM (Random Access Memory), ROM (Read-Only Memory), and Cache are types of computer memory, whereas CPU is the Central Processing Unit responsible for executing instructions.