Computer & Information Technology

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Q70. Which sequence arranges A5, A4 and Legal paper sizes from smallest to largest?

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1. Legal, A4, A5
2. A4, A5, Legal
3. A5, Legal, A4
4. A5, A4, Legal
5. Legal, A5, A4

Answer: D. A5, A4, Legal

Explanation: A5 is 148 by 210 millimetres, A4 is 210 by 297 millimetres, and Legal is about 216 by 356 millimetres. Comparing the areas gives A5 first and Legal last.

Q69. Which keyboard shortcut inserts a manual page break in Word?

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1. Ctrl + Enter
2. Ctrl + Shift + P
3. Ctrl + B
4. Ctrl + P
5. Alt + Enter

Answer: A. Ctrl + Enter

Explanation: Ctrl + Enter inserts a page break at the cursor position. Other shortcuts perform different tasks, such as Ctrl + P for printing and Ctrl + B for applying bold formatting.

Q68. Which function key conventionally opens a software application’s Help system?

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1. F1
2. F2
3. F5
4. F8
5. F12

Answer: A. F1

Explanation: F1 is the conventional Help shortcut in many desktop applications, particularly in Windows software. Specific programs can redefine shortcut keys, but F1 remains the standard general-knowledge response.

Q67. What is the radix of the octal numeral system?

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1. 2
2. 8
3. 16
4. 10
5. 32

Answer: B. 8

Explanation: The octal system has base 8 and uses digits from zero to seven. Each octal digit corresponds to exactly three binary bits, making it a compact way to represent some binary values.

Q66. Which device is an example of an impact printer?

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1. Inkjet printer
2. Laser printer
3. Dot-matrix printer
4. Thermal printer
5. 3D printer

Answer: C. Dot-matrix printer

Explanation: A dot-matrix printer strikes an inked ribbon using small pins to create marks on paper. It is therefore an impact printer, unlike laser and inkjet printers that form images without striking a ribbon.

Q65. How is Disk Defragmenter normally classified?

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1. Application suite
2. Database software
3. Utility software
4. Web browser
5. Programming language

Answer: C. Utility software

Explanation: Defragmentation rearranges scattered data on a magnetic hard drive to improve sequential access and reduce head movement. Such housekeeping and optimization tasks are characteristic of utility software, not ordinary document applications.

Q64. What first-octet range identifies the historical Class A IPv4 address pattern?

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1. 10–128
2. 0–127
3. 192–223
4. 128–225
5. 128–191

Answer: B. 0–127

Explanation: The leftmost bit in classful Class A IPv4 addresses is zero, yielding a first-octet pattern from 0 through 127. Ordinary assigned unicast Class A networks conventionally exclude reserved 0 and 127 values.

Q63. What symbol is used for absolute cell references in Excel formulas?

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1. #
2. @
3. $
4. &
5. %

Answer: C. $

Explanation: Dollar signs fix either a row or column when copying Excel formulas. The notation $A$1 locks both positions, while $A1 locks only the column and A$1 locks only the row.

Q62. Which Excel feature displays lengthy cell contents on multiple lines?

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1. Merge Cells
2. Text Orientation
3. Wrap Text
4. Format Painter
5. Conditional Formatting

Answer: C. Wrap Text

Explanation: Wrap Text keeps long content in the same cell while displaying it on more than one visual line. Excel can increase the row height automatically to make all the wrapped text visible.

Q61. What is the binary representation of decimal ten?

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1. 1010
2. 1001
3. 1100
4. 1110
5. 1000

Answer: A. 1010

Explanation: Ten equals eight plus two in decimal arithmetic. Setting the binary places representing 2 cubed and 2 to the first power yields 1010, with the remaining two bits zero.