class-7 Computer Chapter-3 Solved

 Class-7

Chapter-3

A.      Short Questions.

Q.1.               Explain the term “Operating System’?

Ans.         An operating System or OS is a special set of programs that controls various hardware devices of the computer.

Q.2.               Write the main purpose of an operating system.

Ans.         Offers a friendly interface between the user and the computer.

Q.3.               Give difference between a file and folder.

Ans.         Folder : Just like real world folders, a folder in MS Windows are used to store files.

                  File : It is a collection of data or information stored in a computer.

Q.4.               What is navigation pane?

Ans.         The Navigation Pane lists all of the drives, history, desktop, and downloads that used to be on the Places bar.

B.      Long Questions

Ques.1.    Sam has prepared an assignment on his laptop, but when he brought it to school he could not open his word file in the school computer. Why? How can he solve this problem?

Ans:         May be Sam prepared his word file in latest version and school’s computer have earlier version so he could not open that file. Sam need either change the file version of his laptop or update school’s computer software.

Ques.2.    Rajni by mistake deleted her important files. She was very much troubled. Help her to retrieve those files? 

Ans          When we delete a file/folder in windows, it is placed in the Recycle Bin. The item is temporarily stored in it before being permanently deleted by the user. Rajni can restore her important file with the help of Recycle Bin.

C.      Choose the correct answer.

1.             The MS windows comes with four different

Ans: d. Libraries.

2.             Just like real world folder, a _____ in MS windows is used to store files.

Ans. b. folder

3.             The _______ represents for any number of characters.

Ans. C. * ?!

4.             For removing the deleted files permanently from the computer we select ____.

Ans. a Empty Recycle Bin

5.             A file name has two parts : primary name and _________

Ans. a. extension

D.      Fill in the blanks.

a.       A file is a collection of data or information stored in a computer.

b.      The Control Panel is a component of the Microsoft Windows Graphical User Interface.

c.       A folder in MS Windows is used to store files.

d.      Recycle Bin is like the computer’s dustbin.

E.       Define the following.

A File : It is a collection of data or information stored in a computer.

          Navigation Pane: The Navigation Pane lists all of the drives, history, desktop, and downloads that used to be on the Places bar.

Folder : Just like real world folders, a folder in MS Windows are used to store files.

Address Bar : An address bar is a component of an Internet browser which is used to input and show the address of a website.

F.       Match the following.

Column A                                                                            Column B

1. Launch window help and support                                   b. + F1

2. Name of Computer file                                                    d. File Name

3. Data files are stored                                                         e. Folder

4. Wild characters                                                                 a. *, ?   

5. Deleted Files                                                                     c. Recycle Bin    

G.     Who am I?

1.       I let you access a file quickly. I am generally placed on the desktop.        Address Bar

2.       I help to uninstall the programs from the computer.                                  Control Panel

3.       I help to view, explore, and organize files and folders.                             Navigation Pane

H.      Write Steps to:

1.       Rename a File:

Ans.                  Step 1: Firstly, we open the folder where a certain file is located.

                          Step 2: We click on the file which we want to rename.

                          Step 3: We press F2 function key.

                          Step 4: Finally, we type the new name for our file.

2.       Search for a file.

Ans.            Step 1 : Press the Windows key to access the Windows Start screen.

Step 2 :Start typing part of the file name you want to find. As you type results for your search are shown. ...

Step 3 :Click the drop-down list above the Search text field and select the Files option.

Step 4 :The search results are shown below the Search text field.

3.       Empty the Recycle bin.

Ans.           Step 1. Right-click on your recycle bin

Step 2. Select empty recycle bin

Step 3. Empty the Recycle Bin

Step 4. Click on yes button.

Recycle bin will be empty.

4.       Restored the deleted file.

Ans.                 Step-1. Type Restore files in the search box on the taskbar, and then select Restore your files with File History.

Step-2. Look for the file you need, then use the arrows to see all its versions.

Step-3. When you find the version you want, select Restore to save it in its original location.