Computer Knowledge 🖥️
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106. What is the purpose of the command-line interface (CLI) in computing?
- A) To provide a graphical interface for users
- B) To execute text-based commands for operating system tasks
- C) To connect to the internet
- D) To run multimedia applications

107. Which of the following is a commonly used relational database management system (RDBMS)?
- A) MongoDB
- B) Redis
- C) PostgreSQL
- D) Elasticsearch

108. What does the term "bit" stand for in computing?
- A) Binary Digit
- B) Basic Information Token
- C) Binary Information Theory
- D) Basic Input Type

109. Which programming language is primarily used for Android app development?
- A) Swift
- B) Kotlin
- C) Ruby
- D) PHP

110. In web development, what is the role of JavaScript?
- A) Define the structure of web pages
- B) Style web pages
- C) Add interactivity and dynamic behavior to web pages
- D) Manage databases

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☑️Answers:

106. B) To execute text-based commands for operating system tasks
107. C) PostgreSQL
108. A) Binary Digit
109. B) Kotlin
110. C) Add interactivity and dynamic behavior to web pages
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111. What does the acronym VPN stand for in networking?
- A) Virtual Public Network
- B) Virtual Private Network
- C) Virtual Protected Network
- D) Virtual Proxy Network

112. Which of the following is a protocol used for sending email?
- A) FTP
- B) HTTP
- C) SMTP
- D) SNMP

113. In the context of cybersecurity, what does "DDoS" stand for?
- A) Distributed Denial of Service
- B) Direct Denial of Service
- C) Dynamic Denial of Service
- D) Distributed Data of Service

114. What is the primary purpose of an IP address?
- A) Identify a device on a network
- B) Encrypt data transmissions
- C) Increase network speed
- D) Manage network protocols

115. Which of the following is an example of a high-level programming language?
- A) Assembly
- B) Machine code
- C) Python
- D) Binary

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☑️Answers:

111. B) Virtual Private Network
112. C) SMTP
113. A) Distributed Denial of Service
114. A) Identify a device on a network
115. C) Python
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116. What does the term "GUI" stand for in computing?
- A) General User Interface
- B) Graphical User Interface
- C) Global User Interface
- D) Guided User Interface

117. Which of the following is a popular cloud computing platform?
- A) Windows Server
- B) AWS (Amazon Web Services)
- C) MySQL
- D) Android

118. In programming, what is an array?
- A) A collection of elements identified by index or key
- B) A function that returns a value
- C) A type of loop structure
- D) A module that handles input and output

119. What is the function of a heat sink in a computer?
- A) Increase processing speed
- B) Provide additional storage
- C) Dissipate heat from components
- D) Improve audio quality

120. What does CSS stand for in web development?
- A) Computer Style Sheets
- B) Cascading Style Sheets
- C) Creative Style Sheets
- D) Custom Style Sheets

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☑️Answers:

116. B) Graphical User Interface
117. B) AWS (Amazon Web Services)
118. A) A collection of elements identified by index or key
119. C) Dissipate heat from components
120. B) Cascading Style Sheets
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121. What is the primary purpose of an IP address in a network?
- A) To identify and locate devices on a network
- B) To encrypt data
- C) To increase internet speed
- D) To store data

122. Which of the following languages is primarily used for data analysis and statistical computing?
- A) Ruby
- B) R
- C) Swift
- D) PHP

123. What does BIOS stand for in computing?
- A) Basic Input/Output System
- B) Binary Input/Output System
- C) Basic Internet Operating System
- D) Binary Internet Operating System

124. What is the main function of an operating system?
- A) To manage hardware and software resources on a computer
- B) To design web pages
- C) To connect to the internet
- D) To run database queries

125. In web development, what does the acronym URL stand for?
- A) Uniform Resource Locator
- B) Unified Resource Locator
- C) Universal Resource Locator
- D) Uniform Retrieval Locator

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☑️Answers:

121. A) To identify and locate devices on a network
122. B) R
123. A) Basic Input/Output System
124. A) To manage hardware and software resources on a
computer
125. A) Uniform Resource Locator
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126. Which of the following is an example of a popular Linux distribution?
- A) Windows 10
- B) macOS
- C) Ubuntu
- D) iOS

127. What is the primary function of a firewall in network security?
- A) Encrypt data transmissions
- B) Block unauthorized access
- C) Increase network speed
- D) Manage user passwords

128. Which programming language is known for its simplicity and readability, often recommended for beginners?
- A) C++
- B) Python
- C) Java
- D) Assembly

129. In computing, what does the term "byte" refer to?
- A) A unit of time
- B) A unit of data storage typically consisting of eight bits
- C) A programming error
- D) A type of network protocol

130. What is the purpose of a compiler in software development?
- A) To run programs directly
- B) To convert high-level code into machine code
- C) To debug software
- D) To manage system resources

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☑️Answers:

126. C) Ubuntu
127. B) Block unauthorized access
128. B) Python
129. B) A unit of data storage typically consisting of eight bits
130. B) To convert high-level code into machine code
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131. What does HTTPS stand for?
- A) HyperText Transfer Protocol Secure
- B) High Transfer Protocol Standard
- C) Hyper Transfer Protocol Secure
- D) Hyper Transfer Protected System

132. Which type of malware disguises itself as legitimate software?
- A) Virus
- B) Trojan horse
- C) Worm
- D) Adware

133. What is the main purpose of a MAC address in networking?
- A) To encrypt data packets
- B) To assign IP addresses
- C) To uniquely identify a network interface card (NIC)
- D) To manage network protocols

134. Which of the following is a text editor commonly used in programming?
- A) Microsoft Word
- B) Adobe Photoshop
- C) Sublime Text
- D) VLC Media Player

135. What does API stand for in software development?
- A) Application Program Interface
- B) Advanced Programming Integration
- C) Application Programming Interface
- D) Advanced Protocol Integration

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☑️Answers:

131. A) HyperText Transfer Protocol Secure
132. B) Trojan horse
133. C) To uniquely identify a network interface card (NIC)
134. C) Sublime Text
135. C) Application Programming Interface
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136. What is the primary function of an SSD (Solid State Drive) in a computer?
- A) To provide graphical processing power
- B) To store data with faster access speeds than traditional hard drives
- C) To connect a computer to a network
- D) To manage system memory

137. Which of the following is a language specifically designed for querying databases?
- A) HTML
- B) CSS
- C) SQL
- D) XML

138. What is the purpose of a VPN (Virtual Private Network)?
- A) To increase internet speed
- B) To securely connect to another network over the internet
- C) To host websites
- D) To manage user accounts

139. In the context of software development, what does "debugging" mean?
- A) Writing code
- B) Compiling code
- C) Finding and fixing errors in the code
- D) Designing user interfaces

140. Which file extension is typically used for a Python script?
- A) .java
- B) .py
- C) .html
- D) .cpp

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☑️Answers:

136. B) To store data with faster access speeds than traditional hard drives
137. C) SQL
138. B) To securely connect to another network over the internet
139. C) Finding and fixing errors in the code
140. B) .py
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141. What is the primary purpose of the command "chmod" in Unix/Linux?
- A) To change file permissions
- B) To move files
- C) To copy files
- D) To delete files

142. Which of the following is a key benefit of using cloud computing?
- A) Increased physical hardware requirements
- B) Scalability and flexibility
- C) Limited accessibility
- D) Increased need for manual backups

143. What does "GUI" stand for in computing?
- A) General User Interface
- B) Graphical User Interface
- C) Global User Interface
- D) Guided User Interface

144. Which of the following is a widely used open-source relational database management system?
- A) Microsoft SQL Server
- B) Oracle Database
- C) MySQL
- D) IBM Db2

145. What is a common use of the "for" loop in programming?
- A) To define a function
- B) To iterate over a sequence of elements
- C) To declare a variable
- D) To handle errors

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☑️Answers:

141. A) To change file permissions
142. B) Scalability and flexibility
143. B) Graphical User Interface
144. C) MySQL
145. B) To iterate over a sequence of elements
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146. What does the acronym RAM stand for in computing?
- A) Random Access Memory
- B) Read-Only Memory
- C) Rapid Access Memory
- D) Read And Modify

147. Which of the following is a markup language used for creating web pages?
- A) Java
- B) SQL
- C) HTML
- D) Python

148. What is the main purpose of a subnet mask in networking?
- A) To encrypt data
- B) To manage network traffic
- C) To divide an IP address into network and host portions
- D) To monitor network performance

149. Which of the following is an example of a peer-to-peer (P2P) file sharing protocol?
- A) FTP
- B) BitTorrent
- C) HTTP
- D) SMTP

150. What is the function of a DNS (Domain Name System) server?
- A) To host websites
- B) To translate domain names into IP addresses
- C) To store email messages
- D) To manage network security

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☑️Answers:

146. A) Random Access Memory
147. C) HTML
148. C) To divide an IP address into network and host portions
149. B) BitTorrent
150. B) To translate domain names into IP addresses
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151. What is the purpose of the "grep" command in Unix/Linux?
- A) To search for text within files
- B) To list directory contents
- C) To copy files
- D) To change file permissions

152. Which programming language is known for its use in artificial intelligence and machine learning?
- A) JavaScript
- B) C#
- C) Python
- D) PHP

153. What does the term "BIOS" stand for?
- A) Basic Input/Output System
- B) Binary Input/Output System
- C) Basic Internet Operating System
- D) Binary Internet Operating System

154. What is the primary function of a switch in a network?
- A) To connect multiple devices within a network and forward data to the correct destination
- B) To manage user accounts
- C) To store data
- D) To provide internet access

155. In the context of databases, what does "CRUD" stand for?
- A) Create, Read, Update, Delete
- B) Create, Retrieve, Update, Delete
- C) Copy, Read, Update, Delete
- D) Copy, Retrieve, Update, Delete

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☑️Answers:

151. A) To search for text within files
152. C) Python
153. A) Basic Input/Output System
154. A) To connect multiple devices within a network and forward data to the correct destination
155. A) Create, Read, Update, Delete
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