Select The Diploma in Information Technology (DIT) Papers

Computer Network 2nd Term 2021
Computer Network 2nd Term 2022
E- Commerce and Web Technology 1st Term 2019
Operating System 1st Term 2019
Computer Network 1st Term 2019
Computer Programming C/C++ 2019
Introduction to Data Base 2019
MS Access 1st Term 2019
Office Automation 1st Term 2019
Ms-Access DIT Part 2nd Exam 2013 2nd Term
Introduction to Data Base DIT Part 2nd Exam 2014 2nd term
Ms-Access DIT Part 2nd 1st Term examination 2013
Ms- Access DIT Part 2nd 1st Term Exam 2014
Introduction to Data Base DIT Part 2nd 1st Term Exam 2014
E-Commerce & Web Technology DIT part second 2nd Term 2013
E-Commerce & Web Technology DIT part second 1st Term 2013
E-Commerce & Web Technology DIT part second 2014
Operating System DIT Part First 2013
Operating System DIT Part First 2012
Solved exam papers of C/C++ DIT Part First Exam 1st Term 2013
Solved exam papers of C/C++ DIT Part First Exam 1st Term 2012
Solved exam papers of C/C++ DIT Part First Exam 2nd Term 2013
DIT Part 2nd Solved Exam paper of Graphic Designing
Solved exam papers of IT DIT part 1st Exam 2103
DIT Exam paper of E-Commerce and Web Designing 2014
DIT Exam paper of Data Base 2014
DIT Exam paper of MS Access 2014
DIT Exam paper of Graphic Design 2014
DIT(Part 1st) Solved Exam Paper 1st Term Exam 2012 IT
DIT(Part 1st) Solved Exam Paper 1st Term Exam 2012 IT
Exam Paper of Office Automation for DIT Part First 2013
Exam paper of Computer Networks for DIT Part First 2013
Exam paper of ICT DIT Part First 2013
Exam paper of C/C++ language DIT Part First 2013
Exam paper of Operating System DIT Part First 2013

Solved Paper Of Information and Communication Technology

DIT part 1st (2nd Term Exam 2012)

Time Allowed: 3 Hours Max Marks=100

Not:- attempt any five question . All question carry equal marks. Mobile Phone & Programmable calculator arc not allowed.

Q1. What do you means by Data and Information in Computer technology? give any two example of each:

Answer:
Data:
Data is a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things. Any thing in the raw form means that not meaningful from is called data. Computer data may be processed by the computer and stored in files and folders on the computer. The data that stored in computer is always in binary form.
Types of data:
1. Alphabetic data
2. Numeric data
For example The score of the student or he number of visitors to a website by country is an example of data InformationInformation is organized or classified from of data which has some meaningful values for the receiver. Information must have some characteristics such that Information should be available when required, Information should be accurate and Information should be complete. For example The average score of a class or of the entire school is information that can be derived from the given data. an other example is id we have data from web site that how many visitor or visit the site the finding out the traffic from Pakistan is information.

Q2. Discuses the different types of Computer in detail?

Answer:
There are two way of classifying computer
1) Classification on the basis of their principal of construction also called types of computer.
i-Analog computer
ii - Digital computer
iii - Hybrid computer
2) Classification of the basis of their configuration, size and performance
i - Mini computer
ii - Micro computer
iii - Main frame computer
Analog Computer:
Analog computer represents the data by measurable quantities, as voltages or frequency rather than by expressing the data as numbers. It measures continuous change in some physical quantity. e.g Speedo meter of car measure speed in term of KM/H or M/H, the changes of temperature is measured by thermometer in degree. These computers are ideal in situation when data can be accepted directly from the measuring instruction without having the convert it into number of codes.Analog systems are used to control processes such as oil refinery where flow of temperature measurement are important.
Digital Computer
This type of computer process the data in digital form which is based on the presence or the absence of an electrical charge. These type of computer are used for scientific calculation and business oriented job.
Hybrid computer
A hybrid computer is combination of both analog and digital computer . in this type of computer some portion of processing is done on analog data and other is on digital data. Hybrid computers combine the characteristics of both analog and digital computer. It provides grater accuracy than can be attend with digital computer, grater control and speed then is possible with analogs. It can accept input data in both analog and digital form. It is used for air defense system, different laboratory equipments for medicine etc.
Mini computer
Mini computer are small in size and more compact, smaller in memory and less expensive. These type of computer designed for the computerization of the data of scientific research and data collection, industrial process control and small business application. Mini computer usually fills small rooms because it also includes many types of peripherals equipments attach to it.
Micro computer
Micro computer are smallest in size, very small in memory, least expensive. These type of computer are designed for personal use and also called PC. These are used for small-scale domestic and business application. Microcomputers are easily accommodated on a table and thus have the names desktop. These are highly flexible. The basic of the microcomputer are microprocessor, a silicon chip containing the necessary circuitry to perform arithmetic logical operation and the control I/O operation.
Main Frame Main Frame computer are Large in size, Large in memory, more powerful and more expensive. These types of computer are designed for the computerization for the data of huge business, university, bank, and scientific laboratories national and international market. Mainframe computer place in a large room because it includes many types of peripheral equipment attach with it.

Q3. Write the types of computer memory in details?

Answer:
Memory is electronic circuitry that holds data and program instructions until they processed. Memory devices responsible for storing the information permanently and temporary basses during the processing.
Computer memory is mainly divided in to two types.
i - Primary Memory
ii - Secondary Memory
Primary (main ) Memory:
Primary memory which is also called main memory stores the information in form of binary coded data. Primary memory holds the input data before processing and the information after the processing and also provides the permanents storage as requested. It is also called Internal Memory.
There are following three type of main memory
Random Access Memory (RAM):
RAM is an abbreviation for Random Access Memory. It usually refers to "temporary" memory, as when the system is shut down, the memory is lost.
CMOS Memory:
CMOS is short from Complementary Metal Oxide Semiconductor. This memory hold the data, but requires very little power to retain its contents a CMOS chip is usually powered by battery, CMOS stores data about computer configuration.
ROM:
ROM is short from Read only memory. This memory consist on electronic chips that contains instructions to help a computer prepare for processing tasks. The instructions in ROM are written by the time of manufacturing and permanently store on this chip and you can not change them. PROM : -
PROM is short for programmable read only memory. This type of memory also consist on a electronic memory chip on which data can be written only once. Once a program has been written onto a PROM it remains there forever. The difference between ROM and PROM is that a PROM is manufacturing as blank memory, whereas a ROM is programmed during the manufacturing process. To write data onto a PROM chip, you need a special device called a PROM programmer or a PROM burner.
EPROM :-
An EPROM is short from erasable programmable read only memory. This is a special type of PROM that can be erased by exposing it to ultraviolet light. Once it is spread, it can be programmed. EPROM is a similar to a PROM, but is requires only electricity erased.
Secondary Memory:
The Secondary Memory is also known as auxiliary storage or external storage which store the permanently.

Q4. Convert the following number into required number system?

Answer:
(405)10 = (?)2
(235)10 = (:?)5
(22.21)10 = (?)8
(0.17)10=(?)16

Q5. Define computer and its main parts?

Answer:
Computer is an electronic processing machine which get the input , process on it very fast speed and then give the out put after processing. Computer also stores our information and we cab access this information any time when we need. A computer capable of performing computation and making logical decision at speeds thousands of even million of time faster than human being. Every computer is made up of four-basic units which are following.
  1. Input Unit
2. Output unit
3. Central Processing Unit (CPU)
4. Memory Unit
Input unit: -
The basic unit, which provides communication between the user and the computer, is the input unit. This unit describes a device, used to transfer information into a computing system. It performs following three functions.
# It accepts data from user.
# Converts that data into electrical signals, which can be later, used in arithmetical calculations.
# Coded data is then moved to the system for processing.
The data can be fed into a computer by using different types of input devices. The commonly used input devices are Keyboard, MOUSE etc.
Central Processing Unit (CPU)
CPU is short form central processing unit. The central processing unit is responsible for performing all of the mathematical and logical calculations that are required for a computer to function properly means that work of CPU is Data Processing. The function of CPU is consist on four steps to perform processing function. The first step in this cycle is to fetch a instruction from a software program's memory. Once the CPU fetches the instruction, its second step is to decode the instruction. By decoding the instruction, the CPU is able to organize the information from the instruction in a manner that allows the CPU to complete the next step, which is executing.
Memory Unit:
Memory unit responsible for storing the information permanently and temporary during the processing. Computer memory is mainly divided in to two types.
1 - Primary Memory
2 - Secondary Memory
Primary Memory: Primary memory stores the information in form of binary coded data. Primary memory holds the input data (before processing), result for output purpose (after processing) and also provides the permanents storage as requested. It is usually refer to main memory and also known as Internal Memory.
Main memory consists on RAM, ROM, and Cache Memory.
Secondary Memory:
The Secondary Memory is also known as auxiliary storage or external storage which store the permanently.
Out Put Unit:
The out put unit give the output of our input after processing. This is final step , which presents the results of the machine operations in printed or other visual form. It is a device that receives results from a CPU. It can be a communicating link between a computer and people. It. is used to transfer information out of a computing system.

Q6. Explain the following in Excel?
workbook
Cell
Row
Cell address
Grid Lines

Answer:

Work Book:
A workbook is an Excel file that contains one or more worksheets. Each of the workbook contain 3 worksheet by default you can more wok sheet. The primary document that you use in Excel to store and work with data. Also called a spreadsheet.
Cell:
In excel sheet a box which is formed by the intersection of a row and column is called cell. For example, the reference of the cell that appears at the intersection of column A and row 2 is A2.
Row:
In Excel work sheet the group of values that correspond to the same horizontal arrangement is called a row. In excel every row have a title in number such that 1,2,3 and upto so on. Microsoft Office Excel 2007 there are 1,048,576 rows.
Cell Address:
In Excel, a cell address identifies the location a cell or group of cells in the worksheet. Cell address are also Sometimes called cell reference or cell name. A cell address consists of the column letter and row number that intersect at the cell's location. for example The B4 is an cell address which show the 4th box in column B.
Grid Line
Gridlines are the faded lines that appear around the each box in Excel. These lines are used to distinguish cells on the worksheet. These line are not printed in hard copy. its just show on the screen. You can also show or hide these grid line.

Q7. Explain the following with example?
Hardware
software

Hardware:
In the computer system all the physical component are called hardware. These components may be electronic or mechanical components. Even an electronic wire in the computer are called hardware. The keyboard, CPU, mouse and monitor are the some of the well known example of Hardware. The hardware devices attached to the computer is called peripheral devices all I/O and secondary storage devices. We can also say that all the physical objects that can be touched also known as tangible components are called Hardwares.
Software:
Computer software are collection of programs where program are instruction to given to computer to perform any specific task. There are two type of software system software which are design to control the hardware and manage the computer system for example operation system and drivers on the other side Application software are are those program which perform some specific task such that word processor , multimedia software etc.
System software:
System software are those programs which have some instructions which control the Hardware and also other software such that applications in computer. we can say that system software are interface between hardware and user applications. The function of System software are performs the responsibility of overall supervision of input, processing and output of data. It keeps track of all the peripherals equipment attached with the computer, and monitors their activities. System software are divided into following categories:
Operating Systems: -
The operating system provide an interface in which user can perform basic function on computer such that I/O function. The OS create a link between user and computer and manage all the application and hardware resources.
Device Drivers: - When you purchase a new peripheral hardware device, such as a CD-ROM drive, a mouse or a printer, you need to install software that tells the computer how to use the device. This type of system software is called Device Driver.
Utility Programs:
Utility program are those program which are designed to help analyze, configure, optimize or maintain a computer. For example backup, data recovery, file de fragmentation, disk repair, and virus protection.
Translator: Translator are also system program that converts source program into object program. When programmer write the instruction in any computer language then Translators convert these instructions in machine code , because computer can only understand machine language.

Q8. Write a short note on The Following?
WorkSheet
Virus Hoax
Computer Crime
Worksheet

Worksheet or Spreadsheet is a table of values arranged in rows and columns and Spreadsheet applications are computer programs that let you create and manipulate the data in shape of row and column and manipulate if you need and perform calculation. In a spreadsheet application, each value sits in a cell or Box. Each cell have a name called cell reference or Cell Address according to its placement for example, A1, A2, A3. There are a number of spreadsheet applications on the market, Lotus 1-2-3 and Excel being among the most famous. The more powerful spreadsheet applications support graphics features that enable you to produce charts and graphs from the data.
Computer Crime
Computer crime which also some time called cyber crime or e-crime or electronic crime. Computer crime refers to any crime that involves a computer and a network. When any one use the computer in the commission of a crime then its called computer crime or cyber crime. Examples of computer crimes
Following are the some of the most popular example of cyber crime.
# Making or distributing child pornography. # Hacking, threats, and blackmailing towards a business or person.
# Creating Malware - Writing, creating, or distributing malware program # Some kind of Fraud through the computer online system for example Manipulating data, e.g.
# changing banking records to transfer money to an account.
# Deceiving individuals to gain private or personal information about that person.
# Distributed unsolicited e-mail to dozens or hundreds of different addresses which is called Spamming.
# Unauthorized access to systems you have no permission to access.
Virus Hoax
virus hoax is an type of virus which come in form of a false warning (message ) about a computer virus. Typically this warning arrives through in an e-mail. The Hoax virus Typically use emotive language in the warnings message and encourage readers to forward the message to other people as soon as possible. The Hoax virus send a message to user users that vital system files are viruses and encourage the user to delete these file.





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