1. What is the primary characteristic of Big Data?
A)No structure
B)Small volume
C)High velocity
D)Manual entry
2. Which term describes data that is not organized in a database?
A)Static
B)Relational
C)Cached
D)Unstructured
3. What is the main goal of Big Data analytics?
A)Extracting insights
B)Reducing storage
C)Deleting files
D)Encrypting emails
4. Which tool is commonly used to process large datasets?
A)Paint
B)Apache Hadoop
C)Notepad
D)Calculator
5. What does the 'V' in the 3Vs of Big Data stand for?
A)Variable
B)Vector
C)Value
D)View
6. Which cloud service is often used for Big Data storage?
A)Floppy Disk
B)Amazon S3
C)USB Drive
D)CD-ROM
7. Why do companies collect Big Data?
A)To make predictions
B)To waste memory
C)To slow networks
D)To hide files
8. What is a common source of Big Data?
A)Typewriters
B)Paper logs
C)Social media
D)Fax machines
9. What is 'Data Mining'?
A)Backing up disks
B)Removing data
C)Discovering patterns
D)Printing data
10. Which format is popular for storing Big Data?
A)Video
B)Ink
C)JSON
D)Audio
11. What does a Data Scientist do?
A)Designs fonts
B)Analyzes data
C)Sells cables
D)Fixes hardware
12. What is 'Velocity' in Big Data?
A)Data speed
B)Data weight
C)Data size
D)Data color
13. What is 'Variety' in Big Data?
A)Empty storage
B)Same source
C)Different types
D)Single file
14. What is 'Volume' in Big Data?
A)Screen brightness
B)Amount of data
C)Network speed
D)Sound level
15. Which database is common for Big Data?
A)Paint
B)NoSQL
C)Excel
D)Word
16. What is an algorithm?
A)A step-by-step procedure
B)A screen resolution
C)A computer virus
D)A hardware component
17. Which algorithm is used to put items in order?
A)Printing
B)Sorting
C)Searching
D)Deleting
18. What is the Big-O notation used for?
A)Complexity analysis
B)Finding errors
C)Measuring speed
D)Naming variables
19. Which search is faster on a sorted list?
A)Manual Search
B)Binary Search
C)Linear Search
D)Random Search
20. What does O(1) represent in Big-O?
A)Linear time
B)Exponential time
C)Slow time
D)Constant time
21. Which is a common sorting algorithm?
A)Square Sort
B)Bubble Sort
C)Triangle Sort
D)Circle Sort
22. What does a search algorithm do?
A)Sorts items
B)Finds an item
C)Deletes items
D)Copies items
23. What is the result of a linear search if not found?
A)Error
B)Restart
C)Null or -1
D)Infinity
24. What is the worst-case for linear search?
A)O(n)
B)O(n^2)
C)O(1)
D)O(log n)
25. What is the first step of binary search?
A)Sort the list
B)Check the middle
C)Print the list
D)Delete the list
26. Which notation represents linear time?
A)O(n^2)
B)O(1)
C)O(n)
D)O(log n)
27. Which is an efficient sorting method?
A)Basic Sort
B)Slow Sort
C)Quick Sort
D)Lazy Sort
28. What is 'n' in Big-O notation?
A)Input size
B)Name of app
C)Number of users
D)Network delay
29. Which algorithm is simple but slow?
A)Merge Sort
B)Bubble Sort
C)Quick Sort
D)Heap Sort
30. What does a sorting algorithm output?
A)Random list
B)Deleted list
C)Empty list
D)Ordered list
31. Which company makes the iOS operating system?
A)Apple
B)Samsung
C)Microsoft
D)Google
32. Which language is primary for native Android?
A)Kotlin
B)CSS
C)HTML
D)Swift
33. What is the official Android app store?
A)App Store
B)Google Play
C)Windows Store
D)Web Store
34. Which language is standard for iOS?
A)Swift
B)Java
C)PHP
D)C#
35. What is the IDE for Android development?
A)Notepad
B)Android Studio
C)Xcode
D)Paint
36. What is the IDE for iOS development?
A)Android Studio
B)Visual Studio
C)Xcode
D)Eclipse
37. Which OS is open source?
A)iOS
B)Android
C)macOS
D)Windows
38. Which file format is used for Android apps?
39. Which company maintains Android?
A)Google
B)Sony
C)Nokia
D)Apple
40. What is cross-platform development?
A)One code for both
B)Buying two apps
C)Only for web
D)Using two phones