2nd PUC Computer Science Question Bank Chapter 1 Typical Configuration of Computer System

Students can Download 2nd PUC Computer Science Chapter 1 Typical Configuration of Computer System Questions and Answers, Notes Pdf, 2nd PUC Computer Science Question Bank with Answers helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.

Karnataka 2nd PUC Computer Science Question Bank Chapter 1 Typical Configuration of Computer System

2nd PUC Computer Science Typical Configuration of Computer System One Mark Questions and Answers

Question 1.
What is motherboard?
Answer:
Motherboard is the most important part of any computer. It is a large printed circuit Board [PCB] having many chips, ports, controller and other electronic components mounted on it.

Question 2.
What is microprocessor?
Answer:
The cpu is fabricated as a single Integrated circuit [IC] chip and is also known as the microprocessor.

Question 3.
What is the purpose of registers in the cpu?
Answer:
The registers are high speed temporary storage areas located in the cpu. After the cpu gets the data and instrutions from the memory, these data and instructions are moved to registers for processing. There registers work under the control unit (eu) to accept/ store and transfer instructions or data and perform arithmetic & Logical Comparisions at high speed.

Question 4.
How does computer communicate with other devices?
Answer:
Through ports.

Question 5.
What is system bus?
Answer:
The intemal bus connects major computer components like processor, memory. I/o devices. This bus is called as system bus.

Question 6.
What is the function of control bus?
Answer:
The function of control bus is the control the access to and use of the data and address lines.

Question 7.
What is a data bus?
Answer:
Data bus is a bus which provides a path to transfer data between cpu & memory.

Question 8.
What is a port?
Answer:
Port is a socket/switch used to connect external devices like printers, keyboard, mouse to the computer. Which gets conncted to the computer’s motherboard.

Question 9.
What is an Interface?
Answer:
The interface is a device used to connect external devices like printers, keyboards or scanners to the computer. Which gets connected to the computer’s motherboard.

Question 10.
Expand PCI?
Answer:
Peripheral component Interconnect.

Question 11.
How many bits of data are sent in a serial port?
Answer:
1 bit of data are sent in a serial port.

Question 12.
Expand USB.
Answer:
Universal Serial Bus.

Question 13.
Give one feature of USB port.
Answer:
USB is a plug – and – play interface, between a computer and add – on – devices.

Question 14.
What is meant by plug and play devices?
Answer:
A new devices can be added to the computer without adding an adaptor card or even turning the computer off.

Question 15.
Name any one USB device.
Answer:
PEN DRIVE.

Question 16.
Is device controller hardware or software?
Answer:
Hardware devices.

Question 17.
What is cache memory?
Answer:
Cache memory is a high speed memory available inside the CPU in order to speed up access to data and instructions stored in RAM memory.

Question 18.
Where is LI cache Located?
Answer:
LI cache is located on the Computer Process Chip (CPU).

Question 19.
Where is L2 cache located?
Answer:
L2 cache is located on the Computer Processor Chip (CPU).

Question 20.
Expand SDRAM.
Answer:
Synchronous Dynamic Random Access Memory.

Question 21.
Give the expansion of DDR RAM.
Answer:
Double – Date – Rate Random Access memory.

Question 22.
Expand SMPS.
Answer:
Switched Mode power supply.

Question 23.
What is the use of SMPS?
Answer:
An SMPS connects AC power from an electrical out – let to the DC power, needed by the system components.

OR

SMPS is used to convert AC power to DC power.

Question 24.
What is the approximate power consumed by a PC?
Answer:
Less than 300 watts.

Question 25.
Expand UPS.
Answer:
Uninterruptible power supply.

Question 26.
What is the use of UPS?
Answer:
UPS is a power supply that includes a battery to maintain power in the event of power failure.

Question 27.
List the types of UPS There are two types
Answer:

1. Online UPS
2. Stand by UPS.

2nd PUC Computer Science Typical Configuration of Computer System Two Marks Questions and Answers

Question 28.
Name any two types of motherboard.
Answer:

1. XT motherboard
2. ATX motherboard.

Question 29.
Mention any two characteristics of Motherboard.
Answer:

1. Form factor
2. Chipset.

Question 30.
Mention the components of a motherboard.
Answer:
The motherboard components are:

• Processor [CPU]
• BIOS
• CMOS
• Slots
• Disk controllers
• I/O ports & Interfaces.
• BUS

Question 31.
Explain system BUS.
Answer:
System BUS is also called as Internal BUS it connects major computer components like. Processor, memory. & I/O. A system bus comprises of three kinds of buses: Databus, Address bus & Control bus.

1. Data bus: It provides a path to transfer data between CPU & Memory.
2. Address bus: This bus connects CPU & RAM with a set of lines of wire similar to data bus.
3. Control bus: It is used to control the access to and the use of the data & address lines.

Question 32.
What is Data bus & Address bus?
Answer:
Data bus:
Data bus provides a path to transfer data between CPU & memory. This bus may consist of 32, 64, 124 lines of were. The number of lines is referred to as the width of the data bus.

Address bus:
Address bus connects CPU & RAM with a set of lines of wire similar to data bus. This bus width determines the maximum number of memory locations the computer can address.

Question 33.
What is the purpose of expansion slot?
Answer:
Expansion slots allow you to expand the capabilities of a computer. These slots are located on the motherboard. The expansion cards are inserted in the expansion slots.

Question 34.
What is the purpose of AGP slot?
Answer:
AGP slot is meant to provide faster access to a graphics accelerator card, thus enhancing the visual experience for the user.

Question 35.
Name the different types of I/O ports.
Answer:
Different types of I/O ports:
→ Serial port → parallel port → IDE port
→ USB port → PS -2 port → AGP port
→ VGA port → Ethernet port → Game port

Question 36.
Explain serial port.
Answer:
Serial port is also known as a communication (com) port. They are used for connecting communication devices like mouse & modem. This port transfers data serially one bit of data at a time. Hence it takes 8 times longer to transfer a byte.

Question 37.
Explain parallel port.
Answer:
Parallel ports are used to connect external Input/Output devices like printers or scanners. This port facilitates the paralled transfer of data, usually one byte (8 bits) at a time. Parallel ports come in the form of 25 – pin connector.

Question 38.
Explain USB port.
Answer:
USB port gives a single, standardized, easy – to – use way to connect a variety of newer peripherals to a computer. These devices include printers, scanners, web cameras, speaker etc. USB supports a data speed of 12 MBPS, supporting up to 127 devices. USB is a plug – and – play interface b/w a computer & add – on devices.

Question 39.
What is meant by plug and play card?
Answer:
Plug and play card means the cards can be inserted or removed while the system is on preserving data integrity.

Question 40.
What is the purpose at ports & buses?
Answer:
Ports allows us to connect the external devices like printers, keyboards or scanners to the computer. Bus allows us to connect major computer components like processors, memory and I/O’s.

2nd PUC Computer Science Typical Configuration of Computer System Three Marks Questions and Answers

Question 41.
Explain the different components of a Motherboard.
Answer:
The different components of a Mother Board are :
1. Process [CPU]:
The processor or CPU is the main component on the motherboard & is called the brain of the computer. The CPU consists of Arithmetic Logic Unit [ALU] & Control Unit [CU]. CPU also has a set of registers which are temporary storage areas for holding data, and instructions.

ALU performs the arithmetic &! logic operations on the data. CU is responsible for organizing the processing of data & instructions. CU controls & coordinates the activity of the other units of computer.

2. BIOS [ Basic Input output System]:
BIOS is a small chip on the motherboard that holds a set of instructions to load the hardware settings required to activate keyboards, monitors or disk drives. The BIOS runs when the computer is switched ON. It performs a ‘Power On Self Test’ [POST], that checks if the hardware devices are present & functioning properly.

3. Slots:
A slot is an opening in a computer where you can insert a printed circuit board. Slots are often called expansion slots because they allow you to expand the capabilities of a computer.

• Expansion slots, * ISA, * PCI, * AGP, * RAM.
• Processor slot, * PCI, * PC card.

4. Disk controllers:
Disk controller is the circuit that enables the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. Modern disk controllers are integrated into the disk drive.

5. I/O port and Interfaces:
The port & interfaces are used to connect external devices like printers, keyboards or scanners to the computer, which gets connected to the computers Motherboard. These ports and interfaces are found on the rear side of a computer. There are several types of ports like serial port, parallel port, USB port, & AGP port etc.

6. BUS:
A bus is a collection of parallel wires that form a pathway to carry address, data & control signals.

Question 42.
Explain the characteristics of motherboard.
Answer:
The characteristics of motherboard are:
1. Form factors:
Refers to the motherboard’s geometry, dimensions, arrangement and electrical requirements, different standards have been developed to build motherboards, which can be used in different brands. Advanced Technology Extended. (ATX) is the most common design of motherboard for desktop computers.

2. Chipset:
Controls the majority of resources of the computer. The function of chipset integrated into the motherboard, which includes a recent chipset, in order to maximize the computer’s upgradeability.

3. The process or socket may be a regular connector into which the processor is mounted vertically or a square shaped connector with many small connectors into which the processor is directly inserted.

Question 43.
Explain the schematic diagram of motherboard.
Answer:

Above diagram shows the schematic diagram of motherboard. It is the replica of the motherboard structure excepts that if displays the actual devices connected to the CPU.
Mainly it contains three parts:
1. North Bridge (Host Bridge):
is one of the two chips in the core logic chipset on a PC motherboard, used to manage data communications between the CPU and motherboard. It is supposed to be paired with a second support chip known as a south bridge.

2. North Bridge (North chipset):
is responsible for control of high speed components like CPU, RAM & Video card. Chipset BUS speed control and Switch control data, ensuring data back and forth between the components is a smooth and continuous, fully exploit the speed of the CPU and RAM

3. South Bridge (South Chipset):
is similar as north chipset, but the south bridge driver chipset components slower as sound card, net card, hard disk, CDROM, etc.

Question 44.
Explain the different types of I/O ports.
Answer:
Different types of I/O ports:
1. Serial port:
Serial port is also known as communication (com) ports or as 232 ports. They are used for connecting communication devices like mouse & modem.

2. Parallel port:
Parallel ports are used to connect external input/output devices like printers or scanners. This port facilitates the parallel transfer at data, usually 1 byte at a time.

3. IDE (Integrated Digital Electronics) port:
IDE devices like CD- Rom drives or hard disk drives are connected to the motherboard through the IDE port.

4. USB (Universal serial Bus) port:
USB port gives a single, standardized, easy to – use way to connect a variety of newer peripherals to a computer. These devices include printers, scanners, digital cameras, pen drives, speakers etc.

5. ps – 2 port (personal system – 2 port):
The ps-2 port was developed by IBM to interface keyboards, printing devices like mouse, trackballs, & touchpads. This port is also as mouse port. This port uses synchronous serial signals to communicate b/w the keyboard & a mouse to the computer.

6. AGP (Accelerated Graphics Port) port:
The AGP port is used to connect graphics card that provides high speed video performance typically required in games & other multimedia applications.

7. SCSI (Small computer system Interface) port:
This port is used for adding external devices such as high speed hard disk, high end scanners, & CD – Rom drives. It does fast data transfer & I – O operations. These ports are expensive, as they provide faster access at very high speeds & need separate dedicated adapters to functions.

8. VGA [visual Graphics Adopter] port:
This port connects monitor to a computer’s video card. It has 15 holes & is similar to serial port connector, but serial port connector has pins. This has holes.

9. Ethernet port:
This port connects to a network & high speed internet. It connects network cable to a computer. This port resides on an Ethernet card. In this port data travels at 10 MB to 1000 MB per second depending upon the network bandwidth.

10. Game port:
This port connects a pc to a joystick. It is now replaced by USB.

Question 45.
Give the features of USB port.
Answer:
Features of USB Port:
The computer acts as the host.

1. Up to 127 devices can connect to the host, either directly or by way of USB hubs.
2. Individual USB cables can run as long as 5 meters; with tubes, devices can run upto 30 meters.
3. With USB 2.0, the bus has a maximum data rate of 480 megabits per second.
4. USB devices are hot-swappable, which means we can plug them into the bus and unplug them at any time.
5. USB devices can be put to sleep by the host computer when the computer enters a power-saving mode.

Question 46.
Explain Cache memory.
Answer:

The cache memory is a high-speed memory available inside CPU to speed up access to data and instructions stored in RAM memory. The CPU has a built-in Level 1 (LI) cache and Level 2 (L2) cache, as in the figure. In addition to the built-in LI and L2 cache, some CPU’s have a separate cache chip on the motherboard called level 3 (L3) cache. These days, high – end processor comes with built-in L3 cache, like in Intel core I 7.

The LI, L2, and L3 cache store the most recently executable instructions, the next ones, and the possible ones, respectively. Cache memory is very expensive, so it is smaller in size. Generally, computers have cache memory of sizes 256 KB to 2 MB. CPUs have cache size varying from 256 KB (LI), 6MB (L2) to 12 MB (L3) cache.

Question 47.
Explain the types of Power supply.
Answer:
There are two types of power supply connected to a computer system. They are Switch Mode Power Supply (SMPS) and Uninterruptable Power Supply (UPS).
SMPS:
An SMPS converts AC power from an electrical outlet to the DC power needed by system components. An SMPS is a metal box in the rear of the system that is attached to the computer chassis and to the system board. The SMPS contains the power card plug and a fan for cooling because it generates a lot of heat. In a PC the SMPS converts 230 volts of AC to 5 to 12 DC volts and the wattage is around 180 to 300 watts, 450 watts, and 500 watts.

UPS:
A UPS is a power supply that includes a battery to maintain power in the event of a power failure. Typically, a UPS keeps a computer running for several minutes to a few hours after a power failure, enabling us to save data that is in RAM and then shut down the computer gracefully.
There are types of UPS:

• Online UPS
• Stand by UPS

Question 48.
What is the purpose of ports, buses, and controllers in the I/O systems?
Answer:

1. Purpose of Ports: Ports are used to connect external devices like printers, keyboards, scanners to the computer, which gets connected to the computer’s motherboard.
2. Purpose of Buses: Buses are parallel wires that form a pathway to carry address, data, and control signals.
3. Purpose of controllers: Controllers are the circuits that enable the CPU to communicate with a hard disk, floppy disk, or other kinds of disk drive.

Question 49.
What is a slot? Mention any two types.
Answer:
A slot is an opening in a computer where you can insert a printed circuit board. A slot is also called as an expansion slot.
Types of slots (any two):

1. Expansion slots
2. PCI (Peripheral Component Inter-Connect) slot
3. AGP (Accelerated Graphic Port) slot
4. RAM slot.

Question 50.
Name the different components of Northbridge.
Answer:
Different components of North Bridge are:

1. CPU
2. RAM
3. Video Card
4. BUS
5. Cache memory.

2nd PUC Computer Science Typical Configuration of Computer System Additional Questions and Answers

Question 1.
Explain the general structure of a processor.
Answer:
The memory function of the processor is to execute the instructions given to it & to provide the result. It fetches instructions & data from the primary memory & performs the required operations. This movement of data between the processor & memory is established by a communication path called the bus. The processor contains a number of special-purpose registers in addition to ALU which is responsible for doing calculations.
North Bridge:
North chipset is responsible for the control of high-speed components like CPU, RAM & video card. Chipset Bus speed control and switch control data, ensuring data back & forth b/w the components is a smooth & continuous, fully exploit the speed of CPU & RAM.

SouthBridge:
South chipset is similar to the north chipset, but the southbridge driver chipset components are slower such as; sound card, Net card, hard disk, CD- ROM drive, USB port, SIO and BIOS, IC, etc.