KVS PGT COMPUTER SCIENCE
Computer Organization Questions and Answers –
Functional Units of a Computer
1. The ______ format is usually used to store
data.
a) BCD
b) Decimal
c) Hexadecimal
d) Octal
a) BCD
b) Decimal
c) Hexadecimal
d) Octal
Answer: a
Explanation: The data usually used by computers have to be stored and represented in a particular format for ease of use.
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 ______
a) ASCII
b) EBCDIC
c) ANCI
d) USCII
a) ASCII
b) EBCDIC
c) ANCI
d) USCII
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.
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
a) Assembly language
b) Machine level language
c) High-level language
d) Natural language
Answer: c
Explanation: The program written and before being compiled or assembled is called as a source program.
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
a) RAM
b) Hard-disk
c) Floppy disk
d) Cd disk
Answer: a
Explanation: Memory devices are usually made of semiconductors for faster manipulation of the contents.
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
a) Cache
b) Heaps
c) Accumulators
d) Stacks
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
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
6. The ALU makes use of _______ to store the
intermediate results.
a) Accumulators
b) Registers
c) Heap
d) Stack
a) Accumulators
b) Registers
c) Heap
d) Stack
Answer: a
Explanation: The ALU is the computational center of the CPU. It performs all the mathematical and logical operations. In order to perform better, it uses some internal memory spaces to store immediate results.
Explanation: The ALU is the computational center of the CPU. It performs all the 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
a) Control signals
b) Timing signals
c) Transfer signals
d) Command Signals
Answer: b
Explanation: This unit is used to control and coordinate between the various parts and components of the CPU.
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
a) Input
b) Data
c) Information
d) Stored Values
Answer: b
Explanation: None.
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
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
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.
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
a) Single bus
b) Multiple bus
c) Star bus
d) Rambus
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.
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
a) Address decoder and registers
b) Control circuits
c) Address decoder, registers and Control circuits
d) Only Control circuits
Answer:
c
Explanation: The I/O devices are connected to the CPU via BUS and to interact with the BUS they have an interface.
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
a) Heaps
b) Higher capacity RAM’s
c) SDRAM’s
d) Cache’s
Answer:d
Explanation: The time required to access a part of the memory for data retrieval.
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
a) Secondary memory
b) Virtual memory
c) Hard-disk
d) Disks
Answer: b
Explanation: Virtual memory is like an extension to the existing memory.
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
a) Memory Format Caches
b) Memory Function Complete
c) Memory Find Command
d) Mass Format Command
Answer: b
Explanation: This is a system command enabled when a memory function is completed by a process.
Explanation: This is a system command enabled when a memory function is completed by a process.
15. The time delay between two successive
initiation of memory operation _______
a) Memory access time
b) Memory search time
c) Memory cycle time
d) Instruction delay
a) Memory access time
b) Memory search time
c) Memory cycle time
d) Instruction delay
Answer:
c
Explanation: The time is taken to finish one task and to start another.
Explanation: The time is taken to finish one task and to start another.
BUS Structure
1. The main virtue for using single Bus
structure is ____________
a) Fast data transfers
b) Cost effective connectivity and speed
c) Cost effective connectivity and ease of attaching peripheral devices
d) None of the mentioned
a) Fast data transfers
b) Cost effective connectivity and speed
c) Cost effective connectivity and ease of attaching peripheral devices
d) None of the mentioned
Answer: c
Explanation: By using a single BUS structure we can minimize the amount of hardware (wire) required and thereby reducing the cost.
Explanation: By using a single BUS structure we can minimize the amount of hardware (wire) required and thereby reducing the cost.
2. . ______ are used to overcome the difference
in data transfer speeds of various devices.
a) Speed enhancing circuitry
b) Bridge circuits
c) Multiple Buses
d) Buffer registers
a) Speed enhancing circuitry
b) Bridge circuits
c) Multiple Buses
d) Buffer registers
Answer: d
Explanation: By using Buffer registers, the processor sends the data to the I/O device at the processor speed and the data gets stored in the buffer. After that the data gets sent to or from the buffer to the devices at the device speed.
Explanation: By using Buffer registers, the processor sends the data to the I/O device at the processor speed and the data gets stored in the buffer. After that the data gets sent to or from the buffer to the devices at the device speed.
3. To
extend the connectivity of the processor bus we use ________
a) PCI bus
b) SCSI bus
c) Controllers
d) Multiple bus
a) PCI bus
b) SCSI bus
c) Controllers
d) Multiple bus
Answer: a
Explanation: PCI BUS is used to connect other peripheral devices which require a direct connection with the processor.
Explanation: PCI BUS is used to connect other peripheral devices which require a direct connection with the processor.
4. IBM developed a bus standard for their
line of computers ‘PC AT’ called _____
a) IB bus
b) M-bus
c) ISA
d) None of the mentioned
a) IB bus
b) M-bus
c) ISA
d) None of the mentioned
Answer: c
Explanation: None.
Explanation: None.
5. The bus used to connect the monitor to
the CPU is ______
a) PCI bus
b) SCSI bus
c) Memory bus
d) Rambus
a) PCI bus
b) SCSI bus
c) Memory bus
d) Rambus
Answer:b
Explanation: SCSI BUS is usually used to connect the video devices to the processor.
Explanation: SCSI BUS is usually used to connect the video devices to the processor.
6. ANSI stands for __________
a) American National Standards Institute
b) American Standard Interface
c) American Network Standard Interfacing
d) American Network Security Interrupt
a) American National Standards Institute
b) American Standard Interface
c) American Network Standard Interfacing
d) American Network Security Interrupt
Answer: d
Explanation: The Z register is a special register which can interact with the processor BUS only.
Explanation: The Z register is a special register which can interact with the processor BUS only.
7. _____ register Connected to the
Processor bus is a single-way transfer capable.
a) PC
b) IR
c) Temp
d) Z
a) PC
b) IR
c) Temp
d) Z
Answer: b
Explanation: None
Explanation: None
8. The main advantage of multiple bus
organisation over a single bus is _____
a) Reduction in the number of cycles for execution
b) Increase in size of the registers
c) Better Connectivity
d) None of the mentioned
a) Reduction in the number of cycles for execution
b) Increase in size of the registers
c) Better Connectivity
d) None of the mentioned
Answer: a
Explanation: None.
Explanation: None.
9. The ISA standard Buses are used to connect
___________
a) RAM and processor
b) GPU and processor
c) Harddisk and Processor
d) CD/DVD drives and Processor
a) RAM and processor
b) GPU and processor
c) Harddisk and Processor
d) CD/DVD drives and Processor
Answer: c
Explanation: None.
Explanation: None.
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