IGNOU BCA Solved Assignments (CS-611) 2010
IGNOU BCA Solved Assignments (CS-611) 2010
There are five questions in this assignment. Answer all the questions. You may use illustrations and diagrams to enhance explanations.
Question1. Explain classification of computers. Also suggest a suitable operating system (s) for the following activities:
• Network Computing
• Multimedia Applications
• Database Management System
Identify the requirements on operating system for the above situations. Give reasons in support of your selection. (5 Marks)
Question 2.Explain the differences between followings:
i. Primary Memory and Secondary Memory
ii. Bus topology and Star topology
iii. Application software and System software (3 Marks)
Question 3 (a). What is IP address? Explain how you will get IP address of a computer system. (2 Marks)
Question (b) What is computer virus? Explain how you can protect your machine from computer viruses. (3 Marks)
Question 4. Explain how you will handle following problems
(i) You have to recover a deleted file.
(ii) You have to remove a software from your system.
(iii) You need to change the video mode video mode of your monitor.
(iv) You need to share a newly created folder with other users.
(v) You have set a Printer as default printer. (5 Marks)
Question 5(a) Explain how table is created in MS-Word. (2 Marks)
(b)What is mail-merge feature of MS-Word? Explain advantages of mail-merge. (5 Marks)
Question1. Explain classification of computers. Also suggest a suitable operating system (s) for the following activities:
• Network Computing
• Multimedia Applications
• Database Management System
Identify the requirements on operating system for the above situations. Give reasons in support of your selection.(5 Marks)
Solution 1: Computers are available in different shapes, sizes and weights, due to these different shapes and sizes they perform different sorts of jobs from one another. They can also be classified in different ways. All the computers are designed by the qualified computer architectures that design these machines as their requirements. A computer that is used in a home differs in size and shape from the computer being used in a hospital. Computers act as a server in large buildings, while the computer also differs in size and shape performing its job as a weather forecaster. A student carrying a laptop with him to his college is different in shape and size from all the computers mentioned above.
Here we are going to introduce different classifications of computers one by one. We will discuss what are in classifications and what job they perform.
Super computer
The biggest in size, the most expensive in price than any other is classified and known as super computer. It can process trillions of instructions in seconds. This computer is not used as a PC in a home neither by a student in a college. Governments specially use this type of computer for their different calculations and heavy jobs. Different industries also use this huge computer for designing their products. In most of the Hollywood’s movies it is used for animation purposes. This kind of computer is also helpful for forecasting weather reports worldwide.
Mainframes
Another giant in computers after the super computer is Mainframe, which can also process millions of instruction per second and capable of accessing billions of data. This computer is commonly used in big hospitals, air line reservations companies, and many other huge companies prefer mainframe because of its capability of retrieving data on a huge basis. This is normally to expensive and out of reach from a salary-based person who wants a computer for his home. This kind of computer can cost up to thousands of dollars.
Minicomputer
This computer is next in he line but less offers less than mainframe in work and performance. These are the computers, which are mostly preferred by the small type of business personals, colleges, etc.
Personal computers
Almost all the computer users are familiar with the personal computers. They normally know what the personal computer is and what are its functions. This is the computer mostly preferred by the home users. These computers are lesser in cost than the computers given above and also, small in size; they are also called PCs in short for Personal computers.This computer is small in size and you can easily arrange it to fit in your single bedroom with its all accommodation. Today this is thought to be the most popular computer in all.
Notebook computers
Having a small size and low weight the notebook is easy to carry to anywhere. A student can take it with him/her to his/her school in his/her bag with his/her book.
This is easy to carry around and preferred by students and business people to meet their assignments and other necessary tasks. The approach of this computer is also the same as the Personal computer. It can store the same amount of data and having a memory of the same size as that of a personal computer. One can say that it is the replacement of personal desktop computer.
Question 2. Explain the differences between followings:
i. Primary Memory and Secondary Memory
ii. Bus topology and Star topology
iii. Application software and System software
(3 Marks)
Solution 2 
i) What are the difference between Primary Memory and Secondary Memory
Primary memory is much faster and also it is more cost effective. But the secondary memory is much slower and also less costly. It stores the data permanently unless it is erased. The secondary memory is usually available in the form of floppy disk storage media, hard disk, CD, DVD, Pen drive (i.e. Mass storage devices), memory chips. A 5 and1/4 inch floppy disk typically stores 1.44 mb of data. The data on the floppy disk is organized in terms of tracks and sectors. Hard disk can have large capacity something like 80-300 GB's or higher. Hard disk itself is made up of, large number of platters. Hard disk is usually much faster compared to floppy disk. CD can store up to 750 mb of data. Information on CD ROM is organized in terms of a spiral track. A DVD is digital Versatile Disk and can store 4.6 Gigabyte of information. All these CD disk are usually write ones and read many times (if the disk is not multisession and re writable). So are the DVDs. In primary storage device the storage capacity is limited. It has a volatile memory. In secondary storage device the storage capacity is larger. It is a nonvolatile memory. Primary devices are: RAM / ROM. Secondary devices are: Floppy disc / Hard disk
(ii) What are the difference between Bus topology and Star topology
A bus topology is a networking architecture that is linear, usually by using one or more pieces of cable to form a single line, or bus. The signals sent by one station extend the length of this cable to be heard by other stations. A star topology is an architecture that includes a central device or hub to connect all stations together. Signals sent by a station must pass through (and are usually regenerated) by these central hubs. Since the hub sits in the center and all other stations are linked through the hub, the architecture resembles a star
Bus Topology and Star Topology are methods of making a computer network.Bus Topology has a structure of a straight line,and uses no switch for connectivity of computer.Star topology can be given any shape and is not connected directly,but the computers are connected with each other by using a switch
(iii) What are the difference between Application Software and System software SystemSoftware System is an essential part of computer operations. The function of the systems software is to manage the resources of the computer, automate its operation and facilitate program development. It is generally provided by the computer manufacturer or a specialized programming firm (for example: Microsoft is a company that specializes in system software). While, the Application software are designed to perform specific data processing or computational tasks for the user. These programs are specifically designed to meet end-user requirements. (e.g: spreadsheets, word processors, media players and database applications).
Question 3 (a). What is IP address? Explain how you will get IP address of a computer system.
Question (b) What is computer virus? Explain how you can protect your machine from computer viruses. (3 Marks)
Solution 3 a : Every device connected to the public Internet is assigned a unique number known as an Internet Protocol (IP) address. IP addresses consist of four numbers separated by periods (also called a 'dotted-quad') and look something like 127.0.0.1.Since these numbers are usually assigned to internet service providers within region-based blocks, an IP address can often be used to identify the region or country from which a computer is connecting to the Internet. An IP address can sometimes be used to show the user's general location. Because the numbers may be tedious to deal with, an IP address may also be assigned to a Host name, which is sometimes easier to remember. Hostnames may be looked up to find IP addresses, and vice-versa. At one time ISPs issued one IP address to each user. These are called static IP addresses. Because there is a limited number of IP addresses and with increased usage of the internet ISPs now issue IP addresses in a dynamic fashion out of a pool of IP addresses (Using DHCP). These are referred to as dynamic IP addresses. This also limits the ability of the user to host websites, mail servers, ftp servers, etc. In addition to users connecting to the internet, with virtual hosting, a single machine can act like multiple machines (with multiple domain names and IP addresses).
Solution b : A computer virus is a computer program that can copy itself[1] and infect a computer. The term "virus" is also commonly but erroneously used to refer to other types of malware, adware, and spyware programs that do not have the reproductive ability. A true virus can only spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive. Viruses can increase their chances of spreading to other computers by infecting files on a network file system or a file system that is accessed by another computer.
Re: BCA (1)-611Assignment/2010 – Fundamentals And PC Software Posted On: 2/19/2010 11:32:11 AM
Question 4. Explain how you will handle following problems
(i) You have to recover a deleted file.
(ii) You have to remove a software from your system.
(iii) You need to change the video mode video mode of your monitor.
(iv) You need to share a newly created folder with other users.
(v) You have set a Printer as default printer. (5 Marks)
i)You have to recover a deleted file.
Answer i)
The deleted file can be retrieved from the Recycle Bin. But if it's removed from there also, then it is not possible to recover the deleted file.
(ii) You have to remove a software from your system.
Answer ii)
Software can be removed from system using Add/Remove Programs from Control Panel.
It list all software installed in system. Desired software can be selected from this list and press remove button to remove it from system. After click on remove button it start a guided wizard to remove software.
(iii) You need to change the video mode video mode of your monitor.
Answer iii) Following steps are required to change video mode of monitor.
1. Right click on desktop screen
2. Click on properties.
3. Click on Settings tab.
4. On settings tab Screen resolution can be changed by sliding slider to left or right.
5. Color quality can be changed using Color Quality drop down
6. Once settings are changed, click on Apply or OK button to save new settings.
(iv) You need to share a newly created folder with other users.
Answer iv) Following steps can be taken to share a newly created folder.
1. Right click on newly created folder.
2. Click on Properties
3. Click on Sharing tab
4. Then select option " Share this folder"
5. Here share name can be defined different then actual folder name.
6. Allowed User limit can also set using option "Allow this number of user : " This option will limit number of user's can access this share folder at a particular time.
7. Press Apply or OK to save settings
v) You have to set a Printer as default printer. (5 Marks)
Answer v) To set printer as a default printer following steps can be performed:
1. Click on start and then click on Printers
2. It display's list of all printer configured in system.
3. Right click on printer name you want to make it as default printer.
4. Click on "Set as Default Printer"
Re: BCA (1)-611Assignment/2010 – Fundamentals And PC Software Posted On: 2/21/2010 12:11:56 AM
Question 5(a) Explain how table is created in MS-Word. (2 Marks)
(b)What is mail-merge feature of MS-Word? Explain advantages of mail-merge. (5 Marks)
Answer (a)
Table can be created 2 ways
i) Create a table with the Table button
1. Place the insertion point where you want to insert a table.
2. Click the Table button on the Standard toolbar, then drag while holding down the mouse button to highlight the number of rows and columns you want in your table.
3. When the displayed grid represents the desired number of rows and columns release the mouse button. An empty table will be inserted at the insertion point when the mouse button is released.
ii)Create a table using the Table menu
Table ? Insert Table command can be used to create more complex tables by specifying the Number of Columns and Rows in the Insert Table dialog box.
In dialog box Number of columns and Number of rows can be specified.
Answer (b)
Mail Merge feature can be used to quickly create personalized correspondence and other documents by combining information (merging) information from two different files.
Mail Merge Features
1) This can be used to merge a list of names and addresses from one file (your data document) with another file (your main document) to produce a number of personalized form letters.
2) This can be used to create catalogs, forms with variable information fields, or labels.
3) We insert data instructions (fields) in the main document wherever we want data from the data source to appear in your merged documents.
4) Mail Merge feature can also be used to prepare other kinds of merged documents such as catalogs, parts lists, directory lists forms or invoices, print addresses on envelopes and mailing labels.
