Question 1

1. In Computer Architecture, if a processor uses an n-bit address bus, what is the maximum number of unique memory locations it can address?

A) $n^2$B) $2 \times n$C) $2^n$D) $n^n$

Answer

✓ Correct Answer: Option C

Explanation: Solution: The number of addressable locations is determined by the total number of unique combinations possible with n bits. $$Locations = 2^n$$ For example, if n = 3, locations = $2^3 = 8$ (from 000 to 111).

Question 2

2. Which component of the CPU is responsible for coordinating the flow of data and instructions between the CPU, memory, and I/O devices?

A) Arithmetic Logic Unit (ALU)B) Control Unit (CU)

Question 3

3. What does the Program Counter (PC) register store?

A) Address of the next instruction to be executedB) The result of the last arithmetic operationC) A copy of the current instructionD) The total number of programs currently running

Answer

✓ Correct Answer: Option A

Explanation: Solution: The Program Counter keeps track of the execution sequence by holding the memory address of the next instruction to be processed in the fetch-decode-execute cycle.

Question 4

4. Von Neumann architecture is characterized by:

A) Separate memory for data and instructionsB) No use of a Central Processing UnitC) Multiple parallel processors onlyD) Storing both data and instructions in the same memory

Answer

✓ Correct Answer: Option D

Explanation: Solution: The Von Neumann Architecture (Stored Program Concept) uses a single memory space and a single bus for both data and instructions, leading to the "Von Neumann Bottleneck".

Question 5

5. If a CPU cache has a hit ratio of 90% and a miss penalty of 100 ns, while the cache access time is 10 ns, what is the effective access time?

A) 10 nsB) 20 nsC) 19 nsD) 100 ns

Answer

✓ Correct Answer: Option B

Explanation: Solution: $$EAT = T_{cache} + (Miss Rate \times Miss Penalty)$$ $$EAT = 10 ns + (0.10 \times 100 ns)$$ $EAT = 10 ns + 10 ns = 20 ns$

Question 6

6. Which of the following is true about a Compiler?

A) It translates code line-by-line during executionB) It is a type of Application SoftwareC) It translates the entire source code into object code at onceD) It is not needed for High-Level Languages

Answer

✓ Correct Answer: Option C

Explanation: Solution: A Compiler scans the entire program and translates it into machine code before execution. An Interpreter translates line-by-line.

Question 7

7. Which type of memory is non-volatile and can be erased electronically and rewritten?

A) EEPROMB) SRAMC) DRAMD) PROM

Answer

✓ Correct Answer: Option A

Explanation: Solution: EEPROM (Electrically Erasable Programmable Read-Only Memory) allows individual bytes to be erased and reprogrammed.

Question 8

8. A 'Device Driver' is categorized as:

A) Application SoftwareB) Firmware onlyC) Hardware componentD) System Software

Answer

✓ Correct Answer: Option D

Explanation: Solution: System Software includes the Operating System and utility programs like Device Drivers, which allow the OS to communicate with hardware.

Question 9

9. What is 'Warm Booting'?

A) Starting a computer from a powered-off stateB) Restarting a computer that is already powered onC) Using a hair dryer to heat the CPUD) Installing a new Operating System

Answer

✓ Correct Answer: Option B

Explanation: Solution: Warm Booting (Soft Boot) is restarting a computer via the OS interface or Ctrl+Alt+Del, without cutting the physical power. Cold Booting starts from zero power.

Question 10

10. Which logic gate is known as a 'Universal Gate'?

A) ANDB) ORC) NANDD) XOR

Answer

✓ Correct Answer: Option C

Explanation: Solution: NAND and NOR gates are universal because any other Boolean function (AND, OR, NOT) can be implemented using only these gates.

Question 11

11. In MS Excel, what does the formula =SUM(\A\1:A5) represent when dragged down one cell to the next row?

A) =SUM(\A\1:A5)B) =SUM(\A\1:A6)C) =SUM(\A\2:A6)D) =SUM(A1:A6)

Answer

✓ Correct Answer: Option B

Explanation: Solution: The symbol denotes Absolute Referencing.\A\1 is fixed, whileA5is relative. When dragged down,A5becomesA6, but\$A\1 remains unchanged.

Question 12

12. In MS Word, which shortcut is used to create a 'Hanging Indent'?

A) Ctrl + TB) Ctrl + HC) Ctrl + ID) Ctrl + K

Answer

✓ Correct Answer: Option A

Explanation: Solution: Ctrl + T creates a hanging indent. (Ctrl+H is Replace, Ctrl+I is Italic, Ctrl+K is Hyperlink).

Question 13

13. In MS Access, which field property ensures that no two records have the same value in a specific column?

A) Validation RuleB) Input MaskC) Primary KeyD) Foreign Key

Answer

✓ Correct Answer: Option C

Explanation: Solution: A Primary Key uniquely identifies each record in a table and cannot contain null or duplicate values.

Question 14

14. In MS PowerPoint, which view allows you to see all slides at once in a grid format to easily rearrange them?

A) Normal ViewB) Outline ViewC) Reading ViewD) Slide Sorter View

Answer

✓ Correct Answer: Option D

Explanation: Solution: Slide Sorter View displays thumbnails of all slides, making it the best tool for organizing and reordering slides.

Question 15

15. In MS Excel, the intersection of the 10th row and the 2nd column is:

A) 10BB) B10C) J2D) 2J

Answer

✓ Correct Answer: Option B

Explanation: Solution: Column 1 is A, Column 2 is B. The row is 10. Cell address follows the format [Column Letter][Row Number], so it is B10.

Question 16

16. Which feature in MS Word allows you to send the same letter to multiple recipients with different names and addresses?

A) Mail MergeB) Cross-referenceC) MacroD) Track Changes

Answer

✓ Correct Answer: Option A

Explanation: Solution: Mail Merge is used to create personalized letters, envelopes, or labels for a large mailing list.

Question 17

17. What is the file extension for a PowerPoint Show file (which opens directly in presentation mode)?

A) .pptxB) .potxC) .ppsxD) .thmx

Answer

✓ Correct Answer: Option C

Explanation: Solution: .ppsx is the PowerPoint Show format. .pptx is standard, .potx is a template.

Question 18

18. In MS Access, a 'Query' is used to:

A) Store raw data onlyB) Retrieve and filter specific data from tablesC) Create a graphical user interfaceD) Design the printed output

Answer

✓ Correct Answer: Option B

Explanation: Solution: A Query is a request for data results, and for action on data. You use it to answer questions, perform calculations, or combine data from different tables.

Question 19

19. In MS Excel, what is the default alignment for numbers in a cell?

A) Right-alignedB) Left-alignedC) Center-alignedD) Justified

Answer

✓ Correct Answer: Option A

Explanation: Solution: In Excel, Numbers are right-aligned by default, while Text is left-aligned.

Question 20

20. Which shortcut key is used to start a PowerPoint presentation from the 'current' slide?

A) F5B) Ctrl + F5C) Alt + F5D) Shift + F5

Answer

✓ Correct Answer: Option D

Explanation: Solution: F5 starts from the first slide. Shift + F5 starts from the slide currently selected in the editor.

Accepted Answer

✓ Correct Answer: Option B

Explanation: Solution: The Control Unit (CU) acts as the manager of the CPU. It fetches instructions, decodes them, and directs the ALU and other components on how to respond.

Competitive Exams : Computer Awareness - Mix (Set 2)

1. In Computer Architecture, if a processor uses an n-bit address bus, what is the maximum number of unique memory locations it can address?

2. Which component of the CPU is responsible for coordinating the flow of data and instructions between the CPU, memory, and I/O devices?

3. What does the Program Counter (PC) register store?

4. Von Neumann architecture is characterized by:

5. If a CPU cache has a hit ratio of 90% and a miss penalty of 100 ns, while the cache access time is 10 ns, what is the effective access time?

6. Which of the following is true about a Compiler?

7. Which type of memory is non-volatile and can be erased electronically and rewritten?

8. A 'Device Driver' is categorized as:

9. What is 'Warm Booting'?

10. Which logic gate is known as a 'Universal Gate'?

11. In MS Excel, what does the formula =SUM(\A\1:A5) represent when dragged down one cell to the next row?

12. In MS Word, which shortcut is used to create a 'Hanging Indent'?

13. In MS Access, which field property ensures that no two records have the same value in a specific column?

14. In MS PowerPoint, which view allows you to see all slides at once in a grid format to easily rearrange them?

15. In MS Excel, the intersection of the 10th row and the 2nd column is:

16. Which feature in MS Word allows you to send the same letter to multiple recipients with different names and addresses?

17. What is the file extension for a PowerPoint Show file (which opens directly in presentation mode)?

18. In MS Access, a 'Query' is used to:

19. In MS Excel, what is the default alignment for numbers in a cell?

20. Which shortcut key is used to start a PowerPoint presentation from the 'current' slide?