Practice Sets: Key Points & Mixed Tests — GK Questions with Answers

1. Between SRAM and DRAM, which is faster?
   1. Both equal
   2. Cannot be said
   3. SRAM
   4. DRAM
   Show answer

   Answer: (C) SRAM

   SRAM needs no repeated refreshing.

2. Whose ideas helped improve the ENIAC?
   1. Albert Federer
   2. Lord Smith
   3. Tim Shown
   4. John von Neumann
   Show answer

   Answer: (D) John von Neumann

   The stored-program concept is his.

3. Who built the first computer mouse?
   1. Douglas Engelbart
   2. William English
   3. Robert Zawacki
   4. Bjarne Stroustrup
   Show answer

   Answer: (A) Douglas Engelbart

   It is an invention of the 1960s.

4. The name of the earliest calculating device —
   1. Clock
   2. Abacus
   3. Pascaline
   4. Difference engine
   Show answer

   Answer: (B) Abacus

   The abacus is a frame with beads.

5. In which category does assembly language fall?
   1. A language for assembling machines
   2. A database language
   3. High-level language
   4. Low-level language
   Show answer

   Answer: (D) Low-level language

   Its instructions are in mnemonics.

6. How does a compiler translate a program?
   1. The whole program at once, making a new file
   2. Only the first line
   3. Only the errors
   4. Running it line by line
   Show answer

   Answer: (A) The whole program at once, making a new file

   An interpreter works line by line.

7. Processed data in an understandable form is called —
   1. Raw data
   2. Information
   3. Output only
   4. Process
   Show answer

   Answer: (B) Information

   This is what information means in computer science.

8. How is a DBMS best defined?
   1. A printer
   2. Hardware that gives uncontrolled access to a database
   3. Software that gives controlled access to a database
   4. Software that gives uncontrolled access to a database
   Show answer

   Answer: (C) Software that gives controlled access to a database

   It creates and maintains the database and gives controlled access.

9. One customer’s address exists in two lists, but only one list was updated. This is an example of —
   1. Faster access
   2. Normalisation
   3. Data inconsistency
   4. Information overload
   Show answer

   Answer: (C) Data inconsistency

   The same data in many places is redundancy; their not matching is inconsistency.

10. The smallest unit of a record —
    1. Table
    2. Query
    3. Cell
    4. Field
    Show answer

    Answer: (D) Field

    Entity → attribute (field) → record.

11. The key that uniquely identifies each row of a table —
    1. Foreign key
    2. Primary key
    3. Alternate key
    4. Spare key
    Show answer

    Answer: (B) Primary key

    A foreign key links to another table.

12. Write the decimal 23 in binary.
    1. 11011
    2. 11111
    3. 10011
    4. 10111
    Show answer

    Answer: (D) 10111

    16 + 4 + 2 + 1 = 23 → 10111.

13. Which of these is a valid binary number?
    1. 10101
    2. 10108
    3. 120
    4. 459
    Show answer

    Answer: (A) 10101

    Binary has only 0s and 1s.

14. About how much is 30,000 bytes?
    1. 3 MB
    2. 3 GB
    3. 3 TB
    4. 30 KB
    Show answer

    Answer: (D) 30 KB

    1000 bytes ≈ 1 KB.

15. The process of verifying a person by username and password —
    1. Authentication
    2. Authorisation
    3. Logic
    4. Check-in
    Show answer

    Answer: (A) Authentication

    Authorisation is deciding permissions.

16. “No unauthorised person may reach the data” — which security component is this?
    1. Non-repudiation
    2. Integrity
    3. Confidentiality
    4. Availability
    Show answer

    Answer: (C) Confidentiality

    Integrity is about preventing alteration.

17. Which of these is the strongest password?
    1. School name
    2. Date of birth
    3. Timepass_09
    4. My name
    Show answer

    Answer: (C) Timepass_09

    A mix of letters, digits and a symbol resists guessing.

18. What type of software is Quick Heal?
    1. Browser
    2. Compiler
    3. Spreadsheet
    4. Antivirus
    Show answer

    Answer: (D) Antivirus

    Norton, McAfee, K7 and Kaspersky are antivirus too.

19. The fix for a software bug that is available free on the Internet —
    1. Version
    2. Add-on
    3. Patch
    4. FAQ
    Show answer

    Answer: (C) Patch

    A patch repairs weaknesses and bugs.

20. The first computer virus —
    1. Melissa
    2. Creeper
    3. PARAM
    4. HARLIE
    Show answer

    Answer: (B) Creeper

    It was created in 1971.

21. An attempt to draw out card or bank secrets through a fake identity —
    1. Booting
    2. Streaming
    3. Phishing
    4. Patching
    Show answer

    Answer: (C) Phishing

    Such attempts are called phishing scams.

22. Why is sharing copyrighted files with friends without permission wrong?
    1. It breaks copyright law
    2. Because friends will not like it
    3. It is not wrong
    4. Because the files are free
    Show answer

    Answer: (A) It breaks copyright law

    Giving it free does not make it lawful.

23. The prerecorded formula in Excel, a shortcut for complex calculation, is a —
    1. Value
    2. Data series
    3. Function
    4. Field
    Show answer

    Answer: (C) Function

    Logical, financial and text are its categories.

24. The basic unit in which data is entered in Excel —
    1. Range
    2. Tab
    3. Cell
    4. Box
    Show answer

    Answer: (C) Cell

    A range is a group of cells.

25. What is called “a billionth of a second”?
    1. Millisecond
    2. Terasecond
    3. Microsecond
    4. Nanosecond
    Show answer

    Answer: (D) Nanosecond

    A microsecond is a millionth.

26. Another name for the motherboard —
    1. Printed Circuit Board
    2. Combined device board
    3. Soft board
    4. Electronic board
    Show answer

    Answer: (A) Printed Circuit Board

    The CPU and other parts sit on the PCB.

27. What are the BIOS and ROM chips collectively called?
    1. Software
    2. Firmware
    3. Bootware
    4. Hardware only
    Show answer

    Answer: (B) Firmware

    Firmware is software permanently written into hardware.

28. The technology that secures information resources with a fingerprint, eye or voice print —
    1. Caves
    2. Haptics
    3. Biometrics
    4. RFID
    Show answer

    Answer: (C) Biometrics

    Haptics is touch feedback; RFID is a radio tag.

29. Which of these is an output device?
    1. Speakers
    2. Keyboard
    3. Scanner
    4. Mouse
    Show answer

    Answer: (A) Speakers

    Speakers and headphones give sound out.

30. The port that connects musical instruments to a sound card —
    1. CPU
    2. MIDI
    3. USB
    4. BUS
    Show answer

    Answer: (B) MIDI

    MIDI = Musical Instrument Digital Interface.

31. The machine-readable code of vertical lines of different widths —
    1. ASCII code
    2. Bar code
    3. Magnetic tape
    4. Floppy
    Show answer

    Answer: (B) Bar code

    A scanner or reader reads the bar code.

32. Ctrl and Shift belong to which family of keys?
    1. Adjustment keys
    2. Function keys
    3. Modifier keys
    4. Alphanumeric keys
    Show answer

    Answer: (C) Modifier keys

    They change the effect of another key.

33. The bar that tells the current state of a Word document —
    1. Format bar
    2. Standard bar
    3. Title bar
    4. Status bar
    Show answer

    Answer: (D) Status bar

    It sits at the bottom of the window.

34. The key that erases the letter just behind the cursor —
    1. Delete
    2. Edit
    3. Format
    4. Backspace
    Show answer

    Answer: (D) Backspace

    Delete removes the one on the right.

35. In which tab/menu is Spell check found in Word 2007?
    1. Edit
    2. Review
    3. Format
    4. Tools
    Show answer

    Answer: (B) Review

    Grammar errors show with a green line.

36. In Change Case, what do you choose to turn the selected text fully into capitals?
    1. Capitalize Each Word
    2. Sentence case
    3. lowercase
    4. UPPERCASE
    Show answer

    Answer: (D) UPPERCASE

    Toggle case reverses the letters.

37. One way to change page margins in Word —
    1. Deleting the margin from the ruler
    2. Pressing Esc
    3. Dragging the scroll box
    4. Dragging the margin boundary on the ruler
    Show answer

    Answer: (D) Dragging the margin boundary on the ruler

    The margin changes as you drag the boundary.

38. The button that reloads an open web page for fresh content —
    1. Restore
    2. Refresh
    3. Ctrl
    4. Redo
    Show answer

    Answer: (B) Refresh

    F5 does the same.

39. The shortcut to jump to the browser’s address box and select the URL —
    1. Alt + D
    2. Alt + A
    3. Shift + Tab
    4. Ctrl + S
    Show answer

    Answer: (A) Alt + D

    The URL shows selected, ready to replace.

40. In which folder does an e-mail program keep unfinished messages?
    1. Sent items
    2. Inbox
    3. Outbox
    4. Drafts
    Show answer

    Answer: (D) Drafts

    The outbox is for messages waiting to be sent.

41. The feature to make e-mail letters bold or italic —
    1. Reach signature
    2. Rich signature
    3. Rich text
    4. Plain text
    Show answer

    Answer: (C) Rich text

    Plain text carries no styling.

42. The technique to send several calls over one line —
    1. Infrared transmission
    2. Digitising
    3. Streaming
    4. Multiplexing
    Show answer

    Answer: (D) Multiplexing

    Multiplexing combines many signals onto one medium.

43. Which memory keeps its information even after the power is switched off?
    1. RAM
    2. ROM
    3. Cache
    4. Register
    Show answer

    Answer: (B) ROM

    ROM is non-volatile; the other three empty out as soon as power goes.

44. A pen drive can keep files but cannot add two numbers. What does this show about secondary storage?
    1. It makes logical comparisons
    2. It does arithmetic
    3. It only stores data
    4. It fetches instructions
    Show answer

    Answer: (C) It only stores data

    The CPU performs the operations; secondary storage is only a store.

45. Which material is used to make an IC chip?
    1. Silicon
    2. Copper
    3. Chromium
    4. Iron oxide
    Show answer

    Answer: (A) Silicon

    The semiconductor silicon is the base of the chip.

46. Which of these is a mainframe computer?
    1. PARAM
    2. Palm Pilot
    3. ThinkPad
    4. UNIVAC-1110
    Show answer

    Answer: (D) UNIVAC-1110

    IBM-370 and IBM S/390 are mainframes too.

47. Which is the first supercomputer made in India?
    1. PARAM
    2. Aryabhata
    3. Buddha
    4. CRAY-1
    Show answer

    Answer: (A) PARAM

    CRAY-1 was an American supercomputer.

48. The computer that sits inside a watch and does the one job of showing time is —
    1. Notebook
    2. Mainframe
    3. Embedded computer
    4. Supercomputer
    Show answer

    Answer: (C) Embedded computer

    An embedded computer is built into a device for a fixed job.

49. Pick the item that does not point the cursor.
    1. Keyboard
    2. Light pen
    3. Mouse
    4. Trackball
    Show answer

    Answer: (A) Keyboard

    A keyboard enters characters; it does not point the cursor.

50. Which step starts the instruction cycle?
    1. Store
    2. Decode
    3. Fetch
    4. Execute
    Show answer

    Answer: (C) Fetch

    First the instruction is brought from memory.

51. Which CPU part does calculations like addition, subtraction and comparison?
    1. ALU
    2. Control Unit
    3. Cache
    4. Bus
    Show answer

    Answer: (A) ALU

    The control unit directs the movement of signals.

52. In DOS the DEL command is meant to —
    1. Copy a disk
    2. Create a directory
    3. Delete files
    4. Rename a file
    Show answer

    Answer: (C) Delete files

    DISKCOPY copies the whole disk.

53. The key combination that deletes a file permanently, without going to the Recycle Bin —
    1. Alt + Delete
    2. Esc + Delete
    3. Shift + Delete
    4. Ctrl + Delete
    Show answer

    Answer: (C) Shift + Delete

    Plain Delete sends the file to the Recycle Bin.

54. Who created Linux?
    1. Dennis Ritchie
    2. Bill Gates
    3. Seymour Papert
    4. Linus Torvalds
    Show answer

    Answer: (D) Linus Torvalds

    Linux costs nothing and has open source.

55. The language for making small web programs like applets —
    1. COBOL
    2. Java
    3. Pascal
    4. FORTRAN
    Show answer

    Answer: (B) Java

    Java is platform-independent.

56. The DOS command that copies a single file from one place to another —
    1. RENAME
    2. TIME
    3. COPY
    4. DATE
    Show answer

    Answer: (C) COPY

    DISKCOPY is for a whole disk.

57. What should be set up in a network to share one broadband connection among several computers?
    1. Router
    2. Node
    3. Cable only
    4. Monitor
    Show answer

    Answer: (A) Router

    The modem brings the connection; the router shares it.

58. The device that turns a digital signal into analog for the telephone line —
    1. Switch
    2. Modem
    3. Red wire
    4. Tower
    Show answer

    Answer: (B) Modem

    Modem = Modulator/Demodulator.

59. The domain ending for a profit-making business —
    1. .org
    2. .com
    3. .edu
    4. .mil
    Show answer

    Answer: (B) .com

    .edu is for education, .mil for the military.

60. The means of a text-based login to a far-away computer —
    1. Browser
    2. Search engine
    3. Bookmark
    4. Telnet
    Show answer

    Answer: (D) Telnet

    Telnet = remote login.

61. The first graphical web browser —
    1. Gopher
    2. WAIS
    3. Mosaic
    4. CERN
    Show answer

    Answer: (C) Mosaic

    NCSA Mosaic.

62. In an ER diagram, a relationship is drawn with which shape?
    1. Triangle
    2. Ellipse
    3. Rectangle
    4. Diamond
    Show answer

    Answer: (D) Diamond

    Attribute = ellipse; entity = rectangle.

63. The “questions” asked on the data of a database are called —
    1. Tables
    2. Reports
    3. Forms
    4. Queries
    Show answer

    Answer: (D) Queries

    A query asks the database for information.

64. What should be inserted to show the information of two tables on a single form?
    1. Subform
    2. Linked command button
    3. Macro
    4. Page break
    Show answer

    Answer: (A) Subform

    A subform is a form inside a form.

65. Which are the views to display a table in MS-Access?
    1. Design only
    2. Datasheet only
    3. Datasheet, Design and Pivot
    4. Print only
    Show answer

    Answer: (C) Datasheet, Design and Pivot

    All the three views exist.

66. Which PowerPoint view shows all slides as thumbnails on one screen for reordering?
    1. Slide Design
    2. Slide Sorter
    3. Slide Show
    4. Notes Page
    Show answer

    Answer: (B) Slide Sorter

    Slide Show plays full-screen.

67. Which menu choice is used to preview the slide show?
    1. View → Slide
    2. View → Master
    3. View → Slide Show
    4. View → Outline
    Show answer

    Answer: (C) View → Slide Show

    It starts the show.

68. Where does Excel show the content of the selected cell?
    1. Formula bar
    2. Menu bar
    3. Title bar
    4. Name box
    Show answer

    Answer: (A) Formula bar

    The Name box gives the cell’s address.

69. The shortcut to add a new worksheet in Excel —
    1. Ctrl + W
    2. Ctrl + N
    3. Shift + F11
    4. Ctrl + IW
    Show answer

    Answer: (C) Shift + F11

    Ctrl+N opens a new workbook.

70. Which key is held down to select several separate cells together?
    1. Ctrl + Shift
    2. Shift
    3. Alt
    4. Ctrl
    Show answer

    Answer: (D) Ctrl

    Shift selects a continuous area.

More chapters in this subject

• Computer Security71 questions
• Key Abbreviations65 questions
• Glossary66 questions
• MS-Access & MS-Outlook31 questions
• MS-Excel41 questions
• MS-PowerPoint27 questions