Computer Fundamentals by Anita Goel

A digital computer uses distinct values to represent data internally. Analog computers represent data as a variable across a continuous range of values.

<p>Second Generation (B)</p> Signup and view all the answers

<p>Control the computer (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>DRAM and SRAM (C)</p> Signup and view all the answers

<p>Cache memory is a small, fast memory that stores frequently accessed data and instructions. Before reading data from the slower main memory (RAM), the CPU first checks the cache to save time. If the data needed is found in the cache, it's accessed quickly.</p> Signup and view all the answers

<p>PCI (A), PC Card (B), AGP (C), PCI Express (D), ISA (E)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>A CD-ROM is an optical disk that can only be read and not written on. A DVD-ROM is an optical storage device that can store digital video or computer data. They are similar in shape and physical size, but DVDs can store a larger capacity of data.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Laser Printer (A)</p> Signup and view all the answers

<p>The three common types of computer monitors are CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), and LED (Light Emitting Diode).</p> Signup and view all the answers

<p>A touch screen has sensors that detect the location of a finger or stylus on the screen. When the screen's surface is touched, the sensors register the point of contact, and the controller translates those coordinates into data for the computer.</p> Signup and view all the answers

<p>A sound card in a computer is responsible for converting analog audio signals from a microphone into digital codes that the computer can store and process. It also can convert those digital codes back into analog signals that can be sent to speakers.</p> Signup and view all the answers

<p>A physical mouse uses a rolling ball to detect movement, while an optical mouse uses a sensor and light to detect movement on a surface beneath it.</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Barcode Reader (B), OMR (C), Scanner (D)</p> Signup and view all the answers

<p>A device driver is a program that allows a computer to communicate with and control a specific type of hardware device.</p> Signup and view all the answers

<p>Memory unit (B), Input/Output unit (C), CPU (D)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Device Driver (A), System Utilities (C), Operating System (D)</p> Signup and view all the answers

<p>Process Management (A), File Management (B), Device Management (C), Memory Management (D)</p> Signup and view all the answers

<p>A compiler translates high-level programming language code into low-level machine language code, which the computer can directly understand and execute.</p> Signup and view all the answers

<p>A compiler translates the entire program at once into machine code, while an interpreter translates and executes each line of code one at a time.</p> Signup and view all the answers

<p>Presentation (A), Spreadsheet (B), Database (C), Word Processing (D)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Mesh (A), Star (B), Ring (C), Bus (D)</p> Signup and view all the answers

<p>A modem is a device that enables a computer to communicate over telephone lines or cable lines by converting digital signals into analog signals and vice versa.</p> Signup and view all the answers

<p>Email (A), Telnet (B), File Transfer Protocol (C), World Wide Web (D)</p> Signup and view all the answers

<p>Data refers to raw facts or figures, information is processed and organized data that provides meaning, and knowledge is the understanding and interpretation of information.</p> Signup and view all the answers

<p>A computer-based information system is a system that uses a combination of computers, software, and databases to manage and process data and information.</p> Signup and view all the answers

<p>Information systems are categorized into three levels: Operational Support System, Management Support System, and Executive Information System.</p> Signup and view all the answers

<p>A dumb terminal can only input and output data, while an intelligent terminal can also process data.</p> Signup and view all the answers

<p>Relational Data Model (A)</p> Signup and view all the answers

<p>A Database Management System (DBMS) is a software application that enables users to create, manage, and access a database. It provides tools for defining, manipulating, and controlling data within a database.</p> Signup and view all the answers

<p>A Database Administrator is responsible for managing the database system, including designing, implementing, maintaining, and securing the database.</p> Signup and view all the answers

<p>The two main types of database languages are Data Definition Language (DDL) and Data Manipulation Language (DML).</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Multimedia applications are found in education, entertainment, training, business, and even in virtual reality.</p> Signup and view all the answers

<p>Viruses require a host program to spread, while worms can replicate independently and spread through networks.</p> Signup and view all the answers

<p>Security Awareness (A)</p> Signup and view all the answers

<p>Cryptography is used to protect data confidentiality, integrity, and authenticity. It involves encrypting data using algorithms to make it unreadable without a key. This helps safeguard sensitive information from unauthorized access or modification.</p> Signup and view all the answers

<p>The three main types of cryptography are secret-key cryptography, public-key cryptography, and hash functions.</p> Signup and view all the answers

<p>Some common security measures include using strong passwords, updating software regularly, installing antimalware software, avoiding suspicious links and downloads, and being aware of social engineering tactics.</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers