Computer Organization Questions and Answers – Functional Units of a Computer

This set of Computer Organization Assessment Questions and Answers focuses on “Functional Units of a Computer”.

1. The ______ format is usually used to store data.
a) BCD
b) Decimal
c) Hexadecimal
d) Octal
View Answer

Answer: a
Explanation: The data usually used by computers have to be stored and represented in a particular format for ease of use.

2. The 8-bit encoding format used to store data in a computer is ______
View Answer

Answer: b
Explanation: The data to be stored in the computers have to be encoded in a particular way so as to provide secure processing of the data.

3. A source program is usually in _______
a) Assembly language
b) Machine level language
c) High-level language
d) Natural language
View Answer

Answer: c
Explanation: The program written and before being compiled or assembled is called as a source program.

4. Which memory device is generally made of semiconductors?
a) RAM
b) Hard-disk
c) Floppy disk
d) Cd disk
View Answer

Answer: a
Explanation: Memory devices are usually made of semiconductors for faster manipulation of the contents.

5. The small extremely fast, RAM’s are called as _______
a) Cache
b) Heaps
c) Accumulators
d) Stacks
View Answer

Answer: a
Explanation: These small and fast memory devices are compared to RAM because they optimize the performance of the system and they only keep files which are required by the current process in them
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6. The ALU makes use of _______ to store the intermediate results.
a) Accumulators
b) Registers
c) Heap
d) Stack
View Answer

Answer: a
Explanation: The ALU is the computational center of the CPU. It performs all mathematical and logical operations. In order to perform better, it uses some internal memory spaces to store immediate results.

7. The control unit controls other units by generating ___________
a) Control signals
b) Timing signals
c) Transfer signals
d) Command Signals
View Answer

Answer: b
Explanation: This unit is used to control and coordinate between the various parts and components of the CPU.

8. ______ are numbers and encoded characters, generally used as operands.
a) Input
b) Data
c) Information
d) Stored Values
View Answer

Answer: b
Explanation: None.

9. The Input devices can send information to the processor.
a) When the SIN status flag is set
b) When the data arrives regardless of the SIN flag
c) Neither of the cases
d) Either of the cases
View Answer

Answer: a
Explanation: The input devices use buffers to store the data received and when the buffer has some data it sends it to the processor.

10. ______ bus structure is usually used to connect I/O devices.
a) Single bus
b) Multiple bus
c) Star bus
d) Rambus
View Answer

Answer: a
Explanation: BUS is a bunch of wires which carry address, control signals and data. It is used to connect various components of the computer.

11. The I/O interface required to connect the I/O device to the bus consists of ______
a) Address decoder and registers
b) Control circuits
c) Address decoder, registers and Control circuits
d) Only Control circuits
View Answer

Answer: c
Explanation: The I/O devices are connected to the CPU via BUS and to interact with the BUS they have an interface.

12. To reduce the memory access time we generally make use of ______
a) Heaps
b) Higher capacity RAM’s
c) SDRAM’s
d) Cache’s
View Answer

Answer: d
Explanation: The time required to access a part of the memory for data retrieval.

13. ______ is generally used to increase the apparent size of physical memory.
a) Secondary memory
b) Virtual memory
c) Hard-disk
d) Disks
View Answer

Answer: b
Explanation: Virtual memory is like an extension to the existing memory.

14. MFC stands for ___________
a) Memory Format Caches
b) Memory Function Complete
c) Memory Find Command
d) Mass Format Command
View Answer

Answer: b
Explanation: This is a system command enabled when a memory function is completed by a process.

15. The time delay between two successive initiations of memory operation _______
a) Memory access time
b) Memory search time
c) Memory cycle time
d) Instruction delay
View Answer

Answer: c
Explanation: The time is taken to finish one task and to start another.

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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