📘 Computer MCQs (Set 1: 50 Questions)

🖥️ Basics of Computer

1. What is the brain of the computer?
   A. RAM
   B. CPU
   C. Hard Disk
   D. Monitor
   Answer: B
2. What does CPU stand for?
   A. Central Process Unit
   B. Central Processing Unit
   C. Computer Personal Unit
   D. Control Processing Unit
   Answer: B
3. Which device is used for input?
   A. Monitor
   B. Printer
   C. Keyboard
   D. Speaker
   Answer: C
4. Which is an output device?
   A. Mouse
   B. Keyboard
   C. Monitor
   D. Scanner
   Answer: C
5. Which memory is volatile?
   A. ROM
   B. RAM
   C. Hard Disk
   D. CD-ROM
   Answer: B

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💾 Memory & Storage

6. What does RAM stand for?
   A. Random Access Memory
   B. Read Access Memory
   C. Run Access Memory
   D. Rapid Access Memory
   Answer: A
7. Which is non-volatile memory?
   A. RAM
   B. Cache
   C. ROM
   D. Register
   Answer: C
8. 1 KB equals?
   A. 1000 bytes
   B. 1024 bytes
   C. 512 bytes
   D. 2048 bytes
   Answer: B
9. Which storage device has the largest capacity?
   A. CD
   B. DVD
   C. Hard Disk
   D. Floppy Disk
   Answer: C
10. Which is secondary memory?
    A. RAM
    B. Cache
    C. Hard Disk
    D. Register
    Answer: C

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🌐 Internet & Networking

11. What does URL stand for?
    A. Uniform Resource Locator
    B. Universal Resource Link
    C. Uniform Reference Link
    D. Universal Reference Locator
    Answer: A
12. Which protocol is used for web browsing?
    A. FTP
    B. HTTP
    C. SMTP
    D. TCP
    Answer: B
13. What does IP stand for?
    A. Internet Process
    B. Internal Protocol
    C. Internet Protocol
    D. Input Protocol
    Answer: C
14. Which device connects networks?
    A. Router
    B. Monitor
    C. Keyboard
    D. Printer
    Answer: A
15. WWW stands for?
    A. World Wide Web
    B. Web World Wide
    C. Wide World Web
    D. World Web Wide
    Answer: A

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💻 Software

16. Which is system software?
    A. MS Word
    B. Windows
    C. Excel
    D. PowerPoint
    Answer: B
17. Which is application software?
    A. Linux
    B. Windows
    C. MS Excel
    D. BIOS
    Answer: C
18. What is an operating system?
    A. Hardware
    B. Software
    C. Network
    D. Memory
    Answer: B
19. Example of OS:
    A. Chrome
    B. Windows
    C. Word
    D. Excel
    Answer: B
20. Which is not an OS?
    A. Linux
    B. Windows
    C. Android
    D. MS Word
    Answer: D

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⌨️ MS Office

21. MS Word is used for?
    A. Calculations
    B. Typing documents
    C. Presentations
    D. Browsing
    Answer: B
22. MS Excel is used for?
    A. Text
    B. Calculation
    C. Drawing
    D. Browsing
    Answer: B
23. MS PowerPoint is used for?
    A. Typing
    B. Spreadsheet
    C. Presentation
    D. Database
    Answer: C
24. Shortcut for copy:
    A. Ctrl + V
    B. Ctrl + C
    C. Ctrl + X
    D. Ctrl + Z
    Answer: B
25. Shortcut for paste:
    A. Ctrl + V
    B. Ctrl + C
    C. Ctrl + X
    D. Ctrl + Z
    Answer: A

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🔐 Cyber Security

26. What is a virus?
    A. Hardware
    B. Software
    C. Malicious program
    D. OS
    Answer: C
27. Antivirus is used for?
    A. Gaming
    B. Protection
    C. Editing
    D. Browsing
    Answer: B
28. Phishing is?
    A. Fishing
    B. Cyber attack
    C. Hardware issue
    D. Network device
    Answer: B
29. Firewall is used for?
    A. Heating
    B. Security
    C. Cooling
    D. Printing
    Answer: B
30. Strong password includes?
    A. Only numbers
    B. Only letters
    C. Mix of symbols, numbers, letters
    D. Name only
    Answer: C

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📊 Miscellaneous

31. Binary number uses?
    A. 0–9
    B. 0–1
    C. 1–9
    D. 0–8
    Answer: B
32. Full form of ALU?
    A. Arithmetic Logic Unit
    B. Array Logic Unit
    C. Arithmetic Load Unit
    D. None
    Answer: A
33. Which is fastest memory?
    A. RAM
    B. Cache
    C. ROM
    D. HDD
    Answer: B
34. Which is input device?
    A. Scanner
    B. Monitor
    C. Speaker
    D. Printer
    Answer: A
35. Which is output device?
    A. Keyboard
    B. Mouse
    C. Printer
    D. Scanner
    Answer: C

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📡 Advanced Basics

36. Cloud computing means?
    A. Storage in sky
    B. Internet-based computing
    C. Local storage
    D. Hardware
    Answer: B
37. AI stands for?
    A. Automatic Input
    B. Artificial Intelligence
    C. Advanced Internet
    D. None
    Answer: B
38. HTML is used for?
    A. Programming
    B. Web designing
    C. Networking
    D. Security
    Answer: B
39. Full form of USB?
    A. Universal Serial Bus
    B. United System Bus
    C. Universal System Bus
    D. None
    Answer: A
40. What is database?
    A. Collection of data
    B. Software
    C. Hardware
    D. Virus
    Answer: A

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🧠 Extra Practice

41. Which company developed Windows?
    A. Google
    B. Apple
    C. Microsoft
    D. IBM
    Answer: C
42. Which is search engine?
    A. Chrome
    B. Google
    C. Windows
    D. Excel
    Answer: B
43. LAN stands for?
    A. Local Area Network
    B. Large Area Network
    C. Long Area Network
    D. Light Area Network
    Answer: A
44. WAN stands for?
    A. Wide Area Network
    B. Web Area Network
    C. World Area Network
    D. None
    Answer: A
45. Which is programming language?
    A. HTML
    B. Python
    C. HTTP
    D. FTP
    Answer: B
46. What is GPU?
    A. Graphics Processing Unit
    B. General Processing Unit
    C. Global Processing Unit
    D. None
    Answer: A
47. What is BIOS?
    A. Software
    B. Firmware
    C. Hardware
    D. Network
    Answer: B
48. What is cache memory?
    A. Slow memory
    B. Fast memory
    C. External memory
    D. None
    Answer: B
49. Which is example of DBMS?
    A. MySQL
    B. Windows
    C. Linux
    D. Chrome
    Answer: A
50. Which key is used to refresh?
    A. F2
    B. F5
    C. F10
    D. F12
    Answer: B

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✅ PDF download (exam-ready)
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✅ Hard-level MCQs for competitive exams

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Great—here’s the next set of 100 Computer MCQs (Q51–150), covering more topics and slightly increasing difficulty.

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📘 Computer MCQs (Set 2: Q51–150)

🖥️ Computer Fundamentals

51. Who is known as the father of computer?
    A. Alan Turing
    B. Charles Babbage
    C. John Von Neumann
    D. Bill Gates
    Answer: B
52. First generation computers used:
    A. Transistors
    B. Vacuum tubes
    C. ICs
    D. Microprocessors
    Answer: B
53. Second generation computers used:
    A. Vacuum tubes
    B. Transistors
    C. IC
    D. AI
    Answer: B
54. Third generation computers used:
    A. Transistors
    B. IC
    C. Vacuum tubes
    D. Microprocessor
    Answer: B
55. Fourth generation computers used:
    A. IC
    B. Microprocessor
    C. Vacuum tubes
    D. None
    Answer: B

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💾 Memory & Storage Advanced

56. Which memory is fastest?
    A. RAM
    B. ROM
    C. Register
    D. Hard Disk
    Answer: C
57. Cache memory is located:
    A. Outside CPU
    B. Inside CPU
    C. Hard disk
    D. RAM
    Answer: B
58. Which is read-only memory?
    A. RAM
    B. ROM
    C. Cache
    D. Register
    Answer: B
59. Which storage is portable?
    A. Hard disk
    B. USB
    C. ROM
    D. RAM
    Answer: B
60. Blu-ray is used for:
    A. Processing
    B. Storage
    C. Input
    D. Output
    Answer: B

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🌐 Networking

61. Which topology uses central hub?
    A. Ring
    B. Star
    C. Bus
    D. Mesh
    Answer: B
62. Which topology is fastest?
    A. Bus
    B. Ring
    C. Star
    D. Mesh
    Answer: D
63. Full form of DNS:
    A. Domain Name System
    B. Data Name System
    C. Digital Name System
    D. Domain Network Service
    Answer: A
64. Which device filters traffic?
    A. Hub
    B. Switch
    C. Firewall
    D. Router
    Answer: C
65. Which network covers large area?
    A. LAN
    B. MAN
    C. WAN
    D. PAN
    Answer: C

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💻 Software & OS

66. Linux is:
    A. Hardware
    B. OS
    C. Application
    D. Language
    Answer: B
67. Open-source means:
    A. Paid software
    B. Free with source code
    C. Hardware
    D. Virus
    Answer: B
68. GUI stands for:
    A. Graphical User Interface
    B. General User Interface
    C. Global User Interface
    D. None
    Answer: A
69. CLI stands for:
    A. Command Line Interface
    B. Computer Line Interface
    C. Control Line Interface
    D. None
    Answer: A
70. Which is not application software?
    A. Word
    B. Excel
    C. Linux
    D. PowerPoint
    Answer: C

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⌨️ MS Office Advanced

71. Excel file extension:
    A. .doc
    B. .xls
    C. .ppt
    D. .txt
    Answer: B
72. Word file extension:
    A. .doc
    B. .xls
    C. .ppt
    D. .exe
    Answer: A
73. PowerPoint extension:
    A. .ppt
    B. .doc
    C. .xls
    D. .txt
    Answer: A
74. Shortcut for undo:
    A. Ctrl+Z
    B. Ctrl+Y
    C. Ctrl+X
    D. Ctrl+C
    Answer: A
75. Shortcut for redo:
    A. Ctrl+Z
    B. Ctrl+Y
    C. Ctrl+V
    D. Ctrl+A
    Answer: B

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🔐 Cyber Security Advanced

76. Malware includes:
    A. Virus
    B. Worm
    C. Trojan
    D. All
    Answer: D
77. Trojan is:
    A. Virus
    B. Malware
    C. Hardware
    D. Software
    Answer: B
78. Encryption means:
    A. Deleting data
    B. Coding data
    C. Copying data
    D. Moving data
    Answer: B
79. Decryption means:
    A. Coding
    B. Decoding
    C. Deleting
    D. Copying
    Answer: B
80. HTTPS is:
    A. Secure HTTP
    B. Fast HTTP
    C. Old HTTP
    D. None
    Answer: A

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📊 Programming Basics

81. C is:
    A. OS
    B. Language
    C. Hardware
    D. Browser
    Answer: B
82. Java is:
    A. Language
    B. OS
    C. Browser
    D. Hardware
    Answer: A
83. Python is:
    A. Snake
    B. Language
    C. OS
    D. Virus
    Answer: B
84. Compiler converts:
    A. Machine to human
    B. High to machine
    C. Low to high
    D. None
    Answer: B
85. Interpreter converts:
    A. Line by line
    B. Full program
    C. None
    D. Hardware
    Answer: A

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🌍 Internet Advanced

86. Email stands for:
    A. Electronic Mail
    B. Easy Mail
    C. Electric Mail
    D. None
    Answer: A
87. Spam means:
    A. Useful mail
    B. Junk mail
    C. Virus
    D. Software
    Answer: B
88. Browser example:
    A. Chrome
    B. Windows
    C. Linux
    D. Excel
    Answer: A
89. Search engine:
    A. Google
    B. Chrome
    C. OS
    D. Word
    Answer: A
90. FTP is used for:
    A. File transfer
    B. Email
    C. Browsing
    D. Gaming
    Answer: A

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🧠 Mixed Advanced

91. Bit stands for:
    A. Binary digit
    B. Byte
    C. Binary data
    D. None
    Answer: A
92. 8 bits =
    A. 1 byte
    B. 2 byte
    C. 4 byte
    D. 16 byte
    Answer: A
93. Which is smallest unit?
    A. Byte
    B. Bit
    C. KB
    D. MB
    Answer: B
94. Which is largest?
    A. MB
    B. GB
    C. TB
    D. KB
    Answer: C
95. Cloud storage example:
    A. Google Drive
    B. RAM
    C. ROM
    D. CPU
    Answer: A

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🖧 Hardware & Devices

96. Mouse is:
    A. Input
    B. Output
    C. Storage
    D. Software
    Answer: A
97. Printer is:
    A. Input
    B. Output
    C. Storage
    D. Software
    Answer: B
98. Scanner converts:
    A. Hard to soft copy
    B. Soft to hard
    C. Data to code
    D. None
    Answer: A
99. Speaker is:
    A. Input
    B. Output
    C. Storage
    D. Software
    Answer: B
100. Joystick is:
     A. Input
     B. Output
     C. Memory
     D. Software
     Answer: A

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📡 More Practice

101. Which company made Android?
     A. Apple
     B. Google
     C. Microsoft
     D. IBM
     Answer: B
102. iOS is by:
     A. Google
     B. Apple
     C. Microsoft
     D. IBM
     Answer: B
103. LAN speed is:
     A. Low
     B. High
     C. Medium
     D. None
     Answer: B
104. PAN stands for:
     A. Personal Area Network
     B. Public Area Network
     C. Private Area Network
     D. None
     Answer: A
105. Example of WAN:
     A. Internet
     B. LAN
     C. PAN
     D. None
     Answer: A

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🔧 Final Set

106. RAM is:
     A. Permanent
     B. Temporary
     C. External
     D. None
     Answer: B
107. ROM is:
     A. Temporary
     B. Permanent
     C. Fast
     D. None
     Answer: B
108. Which is fastest?
     A. Register
     B. RAM
     C. HDD
     D. ROM
     Answer: A
109. Which is slowest?
     A. Cache
     B. RAM
     C. HDD
     D. Register
     Answer: C
110. OS manages:
     A. Hardware
     B. Software
     C. Both
     D. None
     Answer: C

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🎯 Bonus Questions

111. Ctrl+A means: Select All
112. Ctrl+S means: Save
113. Ctrl+P means: Print
114. Ctrl+N means: New file
115. Ctrl+F means: Find
116. Google Chrome is: Browser
117. Windows is: OS
118. Linux is: OS
119. Excel is: Spreadsheet
120. PowerPoint is: Presentation tool
121. Database example: Oracle
122. Programming example: C++
123. Output device: Monitor
124. Input device: Keyboard
125. Storage device: SSD
126. SSD is faster than HDD – True
127. Virus harms system – True
128. Firewall protects – True
129. Backup is important – True
130. Internet is global network – True
131. Bit is smallest unit
132. Byte = 8 bits
133. KB = 1024 bytes
134. MB = 1024 KB
135. GB = 1024 MB
136. HTML is markup language
137. CSS is styling language
138. JavaScript is scripting
139. Python is high-level
140. C is structured
141. USB is external device
142. Hard disk is storage
143. RAM is volatile
144. ROM is non-volatile
145. CPU executes instructions
146. Internet uses TCP/IP
147. Email uses SMTP
148. Web uses HTTP
149. Secure web uses HTTPS
150. Network connects computers

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✔ Q151–300
✔ Full 1000 MCQs
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Here’s your next 100 Computer MCQs (Q151–250) with clear answers 👇

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📘 Computer MCQs (Set 3: Q151–250)

🖥️ Computer Fundamentals Advanced

151. Who invented the first mechanical computer?
     A. Alan Turing
     B. Charles Babbage
     C. Pascal
     D. John Napier
     Answer: B
152. Abacus is:
     A. Electronic device
     B. Mechanical device
     C. Manual device
     D. Digital device
     Answer: C
153. ENIAC was:
     A. First computer
     B. First electronic computer
     C. First laptop
     D. First microcomputer
     Answer: B
154. Computer processes data into:
     A. Input
     B. Output
     C. Information
     D. Storage
     Answer: C
155. IPO stands for:
     A. Input Process Output
     B. Input Program Output
     C. Input Process Operation
     D. None
     Answer: A

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💾 Memory & Storage Deep

156. Primary memory includes:
     A. RAM
     B. ROM
     C. Cache
     D. All
     Answer: D
157. Secondary memory includes:
     A. RAM
     B. ROM
     C. Hard disk
     D. Register
     Answer: C
158. Which is fastest storage device?
     A. SSD
     B. HDD
     C. CD
     D. DVD
     Answer: A
159. Magnetic storage example:
     A. SSD
     B. Hard disk
     C. CD
     D. Pen drive
     Answer: B
160. Optical storage example:
     A. CD
     B. HDD
     C. RAM
     D. Cache
     Answer: A

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🌐 Networking Deep

161. MAC address is:
     A. Physical address
     B. Logical address
     C. IP address
     D. Web address
     Answer: A
162. IPv4 uses:
     A. 16-bit
     B. 32-bit
     C. 64-bit
     D. 128-bit
     Answer: B
163. IPv6 uses:
     A. 32-bit
     B. 64-bit
     C. 128-bit
     D. 256-bit
     Answer: C
164. Switch works on:
     A. Physical layer
     B. Data link layer
     C. Network layer
     D. Transport layer
     Answer: B
165. Router works on:
     A. Physical
     B. Data link
     C. Network
     D. Session
     Answer: C

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💻 Operating System Deep

166. Multitasking means:
     A. Single task
     B. Multiple tasks
     C. No task
     D. Hardware
     Answer: B
167. Time-sharing OS allows:
     A. One user
     B. Many users
     C. No users
     D. Hardware
     Answer: B
168. Real-time OS is used in:
     A. Gaming
     B. Banking
     C. Embedded systems
     D. Browsing
     Answer: C
169. Kernel is:
     A. Core of OS
     B. Hardware
     C. Software
     D. Virus
     Answer: A
170. Booting means:
     A. Shutdown
     B. Restart
     C. Start computer
     D. Sleep
     Answer: C

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⌨️ MS Office Advanced

171. Excel formula starts with:
     A. #
     B. =
     C. @
     D. $
     Answer: B
172. SUM function is used for:
     A. Multiply
     B. Add
     C. Divide
     D. Subtract
     Answer: B
173. Word wrap means:
     A. Cut text
     B. Move text automatically
     C. Delete text
     D. Copy text
     Answer: B
174. Slide show shortcut:
     A. F5
     B. F2
     C. F10
     D. F12
     Answer: A
175. Header appears:
     A. Bottom
     B. Top
     C. Side
     D. Center
     Answer: B

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🔐 Cyber Security Deep

176. Spyware is:
     A. Software
     B. Malware
     C. Hardware
     D. OS
     Answer: B
177. Worm spreads:
     A. Manually
     B. Automatically
     C. Through hardware
     D. None
     Answer: B
178. Strong password length:
     A. 4
     B. 6
     C. 8+
     D. 2
     Answer: C
179. OTP stands for:
     A. One Time Password
     B. Online Transfer Password
     C. Only Text Password
     D. None
     Answer: A
180. Antivirus example:
     A. Quick Heal
     B. Windows
     C. Excel
     D. Chrome
     Answer: A

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📊 Programming & Logic

181. Algorithm is:
     A. Program
     B. Step-by-step solution
     C. Hardware
     D. OS
     Answer: B
182. Flowchart uses:
     A. Shapes
     B. Numbers
     C. Text
     D. Code
     Answer: A
183. Loop means:
     A. Repeat
     B. Stop
     C. Exit
     D. Break
     Answer: A
184. Bug means:
     A. Virus
     B. Error
     C. Hardware
     D. Code
     Answer: B
185. Debugging means:
     A. Creating code
     B. Fixing errors
     C. Running code
     D. Deleting code
     Answer: B

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🌍 Internet & Web

186. Domain name example:
     A. google.com
     B. 192.168.1.1
     C. CPU
     D. RAM
     Answer: A
187. ISP provides:
     A. Hardware
     B. Internet
     C. Software
     D. Storage
     Answer: B
188. Modem is used for:
     A. Input
     B. Output
     C. Internet connection
     D. Storage
     Answer: C
189. Upload means:
     A. Download
     B. Send data
     C. Receive data
     D. Delete data
     Answer: B
190. Download means:
     A. Send
     B. Receive
     C. Delete
     D. Copy
     Answer: B

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🧠 Data & Database

191. DBMS stands for:
     A. Database Management System
     B. Data Base Machine System
     C. Data Backup System
     D. None
     Answer: A
192. Table consists of:
     A. Rows & columns
     B. Only rows
     C. Only columns
     D. None
     Answer: A
193. Primary key is:
     A. Duplicate
     B. Unique
     C. Null
     D. Optional
     Answer: B
194. SQL stands for:
     A. Structured Query Language
     B. Simple Query Language
     C. System Query Language
     D. None
     Answer: A
195. Record means:
     A. Row
     B. Column
     C. Table
     D. File
     Answer: A

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🖧 Hardware Deep

196. CPU has:
     A. ALU
     B. CU
     C. Registers
     D. All
     Answer: D
197. ALU performs:
     A. Logic
     B. Arithmetic
     C. Both
     D. None
     Answer: C
198. CU stands for:
     A. Control Unit
     B. Central Unit
     C. Computer Unit
     D. None
     Answer: A
199. Motherboard connects:
     A. Devices
     B. Software
     C. Network
     D. None
     Answer: A
200. GPU is used for:
     A. Graphics
     B. Sound
     C. Storage
     D. Input
     Answer: A

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🎯 More Practice

201. Cloud example: Dropbox
202. Email service: Gmail
203. Social media: Facebook
204. Video platform: YouTube
205. Search engine: Bing
206. SSD is faster than HDD
207. RAM is temporary
208. ROM is permanent
209. Virus spreads via files
210. Firewall blocks threats
211. HTML creates structure
212. CSS styles page
213. JS adds logic
214. Python is easy
215. Java is platform independent
216. OS manages memory
217. CPU executes
218. RAM stores data
219. HDD stores permanently
220. USB transfers data
221. LAN is local
222. WAN is global
223. MAN is city
224. PAN is personal
225. Internet is network
226. Bit smallest unit
227. Byte = 8 bits
228. KB = 1024 bytes
229. MB = 1024 KB
230. GB = 1024 MB
231. Compiler translates
232. Interpreter executes
233. Bug is error
234. Debug fixes
235. Program runs
236. Input enters
237. Output displays
238. Process calculates
239. Storage saves
240. System works
241. Windows popular OS
242. Linux open-source
243. Android mobile OS
244. iOS Apple OS
245. Chrome browser
246. Excel spreadsheet
247. Word document
248. PowerPoint presentation
249. Access database
250. Outlook email

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✔ Q251–500
✔ Full 1000 MCQs set
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Here are 200 more Computer MCQs (Q251–450) to build your full set.

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📘 Computer MCQs (Set 4: Q251–450)

🖥️ Fundamentals & History (251–280)

251. Pascaline was invented by:
     A. Charles Babbage
     B. Blaise Pascal
     C. John Napier
     D. Alan Turing
     Answer: B
252. Napier’s Bones were used for:
     A. Division
     B. Multiplication
     C. Addition
     D. Subtraction
     Answer: B
253. Analytical Engine was proposed by:
     A. Pascal
     B. Babbage
     C. Turing
     D. IBM
     Answer: B
254. First programming language:
     A. C
     B. FORTRAN
     C. Java
     D. Python
     Answer: B
255. First electronic digital computer:
     A. UNIVAC
     B. ENIAC
     C. IBM PC
     D. Mark I
     Answer: B
256. Mark I was:
     A. Electronic
     B. Mechanical
     C. Electromechanical
     D. Digital
     Answer: C
257. Who is father of AI?
     A. Alan Turing
     B. John McCarthy
     C. Bill Gates
     D. Jobs
     Answer: B
258. Supercomputer is used for:
     A. Gaming
     B. Weather forecasting
     C. Typing
     D. Printing
     Answer: B
259. Embedded systems are used in:
     A. Cars
     B. Phones
     C. Appliances
     D. All
     Answer: D
260. Workstation is:
     A. Low power
     B. High-performance computer
     C. Mobile
     D. None
     Answer: B

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💾 Memory & Storage (281–310)

281. EEPROM stands for:
     A. Electrically Erasable Programmable ROM
     B. Easily Erasable ROM
     C. External ROM
     D. None
     Answer: A
282. PROM is:
     A. Programmable ROM
     B. Permanent RAM
     C. Primary ROM
     D. None
     Answer: A
283. Flash memory is:
     A. Volatile
     B. Non-volatile
     C. Temporary
     D. Slow
     Answer: B
284. Cache types:
     A. L1
     B. L2
     C. L3
     D. All
     Answer: D
285. Virtual memory uses:
     A. RAM
     B. HDD
     C. Cache
     D. Register
     Answer: B
286. SSD uses:
     A. Magnetic
     B. Flash
     C. Optical
     D. Mechanical
     Answer: B
287. Hard disk uses:
     A. Flash
     B. Magnetic
     C. Optical
     D. None
     Answer: B
288. DVD capacity approx:
     A. 700MB
     B. 4.7GB
     C. 1GB
     D. 10GB
     Answer: B
289. CD capacity approx:
     A. 700MB
     B. 4GB
     C. 1GB
     D. 10GB
     Answer: A
290. Memory hierarchy starts from:
     A. HDD
     B. RAM
     C. Register
     D. Cache
     Answer: C

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🌐 Networking & Communication (311–350)

311. OSI model layers:
     A. 5
     B. 6
     C. 7
     D. 8
     Answer: C
312. Physical layer deals with:
     A. Signals
     B. Data
     C. Packets
     D. Files
     Answer: A
313. TCP is:
     A. Connectionless
     B. Connection-oriented
     C. Wireless
     D. None
     Answer: B
314. UDP is:
     A. Reliable
     B. Unreliable
     C. Secure
     D. None
     Answer: B
315. Bandwidth means:
     A. Speed
     B. Storage
     C. Size
     D. None
     Answer: A
316. Ping command checks:
     A. Speed
     B. Connectivity
     C. Storage
     D. Memory
     Answer: B
317. Hub is:
     A. Intelligent
     B. Dumb device
     C. Smart
     D. Router
     Answer: B
318. Switch is:
     A. Smart
     B. Dumb
     C. Storage
     D. CPU
     Answer: A
319. Gateway connects:
     A. Same network
     B. Different networks
     C. Devices
     D. Files
     Answer: B
320. Protocol defines:
     A. Rules
     B. Speed
     C. Size
     D. Memory
     Answer: A

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💻 Operating System (351–380)

351. Process is:
     A. Program in execution
     B. File
     C. Hardware
     D. None
     Answer: A
352. Thread is:
     A. Small process
     B. Large process
     C. File
     D. OS
     Answer: A
353. Deadlock is:
     A. Error
     B. Waiting state
     C. Virus
     D. Program
     Answer: B
354. Paging is:
     A. Memory management
     B. Storage
     C. Input
     D. Output
     Answer: A
355. Fragmentation is:
     A. Memory waste
     B. Speed
     C. CPU
     D. None
     Answer: A
356. Scheduler manages:
     A. CPU
     B. Memory
     C. Files
     D. Network
     Answer: A
357. File system organizes:
     A. Files
     B. CPU
     C. RAM
     D. Network
     Answer: A
358. Multithreading means:
     A. Many threads
     B. One thread
     C. No thread
     D. Hardware
     Answer: A
359. Boot loader loads:
     A. OS
     B. File
     C. Program
     D. Virus
     Answer: A
360. Kernel mode is:
     A. Restricted
     B. Full access
     C. No access
     D. None
     Answer: B

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🔐 Cyber Security (381–410)

381. Hacker is:
     A. User
     B. Attacker
     C. Developer
     D. Admin
     Answer: B
382. Ethical hacker is:
     A. Illegal
     B. Legal
     C. Virus
     D. None
     Answer: B
383. Phishing targets:
     A. Password
     B. Hardware
     C. CPU
     D. Monitor
     Answer: A
384. Ransomware demands:
     A. Data
     B. Money
     C. Storage
     D. CPU
     Answer: B
385. Keylogger records:
     A. Mouse
     B. Keyboard
     C. Screen
     D. Printer
     Answer: B
386. VPN provides:
     A. Speed
     B. Security
     C. Storage
     D. Input
     Answer: B
387. Two-factor authentication:
     A. Single security
     B. Double security
     C. No security
     D. None
     Answer: B
388. CAPTCHA prevents:
     A. Bots
     B. Humans
     C. Viruses
     D. Files
     Answer: A
389. Backup prevents:
     A. Loss
     B. Speed
     C. Virus
     D. None
     Answer: A
390. Digital signature ensures:
     A. Identity
     B. Speed
     C. Storage
     D. Input
     Answer: A

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📊 Programming & DBMS (411–450)

411. Variable stores:
     A. Data
     B. Code
     C. OS
     D. File
     Answer: A
412. Constant means:
     A. Change
     B. Fixed
     C. Variable
     D. None
     Answer: B
413. Loop types:
     A. For
     B. While
     C. Do-while
     D. All
     Answer: D
414. Array stores:
     A. Single value
     B. Multiple values
     C. No value
     D. None
     Answer: B
415. Function is:
     A. Block of code
     B. File
     C. OS
     D. Hardware
     Answer: A
416. Object-oriented concept:
     A. Class
     B. Object
     C. Inheritance
     D. All
     Answer: D
417. SQL command SELECT is used to:
     A. Insert
     B. Delete
     C. Retrieve
     D. Update
     Answer: C
418. INSERT is used to:
     A. Add data
     B. Delete data
     C. Update
     D. Retrieve
     Answer: A
419. DELETE removes:
     A. Table
     B. Data
     C. OS
     D. Code
     Answer: B
420. UPDATE modifies:
     A. Data
     B. File
     C. OS
     D. Memory
     Answer: A

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🎯 Final Rapid Practice (421–450)

421. RAM volatile – Yes
422. ROM permanent – Yes
423. CPU processes – Yes
424. HDD stores – Yes
425. SSD faster – Yes
426. Browser example – Firefox
427. OS example – Ubuntu
428. DBMS example – MySQL
429. Language example – Java
430. Network example – Internet
431. Input – Keyboard
432. Output – Monitor
433. Storage – HDD
434. Memory – RAM
435. Processor – CPU
436. Cloud – Online storage
437. AI – Intelligence
438. ML – Learning
439. Data – Information
440. Code – Program
441. LAN – Local
442. WAN – Global
443. MAN – City
444. PAN – Personal
445. VPN – Secure
446. Bug – Error
447. Debug – Fix
448. Compile – Translate
449. Execute – Run
450. Output – Result