Computer Fundamentals
COMPUTER FUNDAMENTALS
SECTION A
PART ONE
MULTIPLE CHOICES:
1. (b) Two types.
2. (b) 1 or more input signals to produce output.
3. (d) Both (a) and (c).
4. (b) Non-volatile.
5. (c) Direct-access storage device.
6. (c) Multiple object program files of any software.
7. (d) None of the above.
8. (b) way in which the network’s nodes are linked together.
9. (a) World wide web
10. (a) General purpose electronic equipment for homes.
PART TWO
1. WRITE A SHORT NOTES ON “THE OSI MODEL”?
Ans:
The Open Systems Interconnection model was a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a way of sub-dividing a communications system into smaller parts called layers. Similar communication functions are grouped into logical layers. A layer provides services to its upper layer while receiving services from the layer below. On each layer, an instance provides service to the instances at the layer above and requests service from the layer below.
For example, a layer that provides error-free communications across a network provides the path needed by applications above it, while it calls the next lower layer to send and receive packets that make up the contents of that path. Two instances at one layer are connected by a horizontal connection on that layer.
2. WRITE A SHORT NOTES ON “TOUCH SCREEN”?
Ans:
A touch screen is a computer display screen that is also an input device. The screens are sensitive to pressure; a user interacts with the computer by touching pictures or words on the screen.
There are three types of touch screen technology:
Resistive: A resistive touch screen panel is coated with a thin metallic electrically conductive and resistive layer that causes a change in the electrical current which is registered as a touch event and sent to the controller for processing. Resistive touch screen panels are generally more affordable but offer only 75% clarity and the layer can be
SECTION A
PART ONE
MULTIPLE CHOICES:
1. (b) Two types.
2. (b) 1 or more input signals to produce output.
3. (d) Both (a) and (c).
4. (b) Non-volatile.
5. (c) Direct-access storage device.
6. (c) Multiple object program files of any software.
7. (d) None of the above.
8. (b) way in which the network’s nodes are linked together.
9. (a) World wide web
10. (a) General purpose electronic equipment for homes.
PART TWO
1. WRITE A SHORT NOTES ON “THE OSI MODEL”?
Ans:
The Open Systems Interconnection model was a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a way of sub-dividing a communications system into smaller parts called layers. Similar communication functions are grouped into logical layers. A layer provides services to its upper layer while receiving services from the layer below. On each layer, an instance provides service to the instances at the layer above and requests service from the layer below.
For example, a layer that provides error-free communications across a network provides the path needed by applications above it, while it calls the next lower layer to send and receive packets that make up the contents of that path. Two instances at one layer are connected by a horizontal connection on that layer.
2. WRITE A SHORT NOTES ON “TOUCH SCREEN”?
Ans:
A touch screen is a computer display screen that is also an input device. The screens are sensitive to pressure; a user interacts with the computer by touching pictures or words on the screen.
There are three types of touch screen technology:
Resistive: A resistive touch screen panel is coated with a thin metallic electrically conductive and resistive layer that causes a change in the electrical current which is registered as a touch event and sent to the controller for processing. Resistive touch screen panels are generally more affordable but offer only 75% clarity and the layer can be