Computer System

Topics in this chapter

• Computer Hardware and Architecture
• CPU Internal Components and Instruction Execution
• Memory Hierarchy and Storage Devices
• Computer System Performance and System Buses
• Operating Systems and System Software
• Data Representation and Number Systems
• Input Output Devices and Peripherals

Cheat sheet

Practice questions

1. Question 1Q-477CF1

   Which component of the CPU performs arithmetic calculations and logical comparisons?

   1. A.Control Unit
   2. B.Arithmetic Logic Unit
   3. C.Main Memory
   4. D.Input Unit
   See the answer and solution
2. Question 2Q-F70DA5

   Which statement correctly describes cache memory?

   1. A.It is slower than secondary storage and is used only for permanent data storage.
   2. B.It is a small, high-speed memory that stores frequently used data and instructions for quick access by the CPU.
   3. C.It is an input device used to enter data into a computer.
   4. D.It stores data permanently even when the computer is switched off.
   See the answer and solution
3. Question 3Q-805B24

   Using 8-bit two's complement representation, what is the binary representation of -18?

   1. A.11101110
   2. B.11101101
   3. C.00010010
   4. D.10010010
   See the answer and solution
4. Question 4Q-F95617

   Which type of memory retains its contents even when the computer is switched off and commonly stores firmware?

   1. A.RAM
   2. B.ROM
   3. C.Cache memory
   4. D.Register
   See the answer and solution
5. Question 5Q-727393

   Which of the following is a primary function of an operating system?

   1. A.Designing web pages automatically
   2. B.Managing hardware resources and providing an interface for users and applications
   3. C.Converting all decimal numbers into binary numbers
   4. D.Manufacturing computer components
   See the answer and solution