types of software worksheet 3

 Computer Applications 

Class IX 


 

Types of Software (Chap 3)
Worksheet 3 SOLUTION (chap 3) July 2020:-
1. Below is a list of various types of application software:-
A. Database E. Modelling
B. Desk top publishing F. Spreadsheet
C. Drawing G. Web Design
D. Mail merging H. Word processing
Which one would be the most suitable to use for each of the following tasks?
a. Rotation of shapes
b. Typing in text for a novel
c. Using frames to position text and graphics on a page
d. Replication of cells
e. Carrying out a complex search on two or more criteria
f. A simple flight simulation
Ans1.
a. C. (drawing)
b. H (word processing)
c. B (desk top publishing)
d. F (spreadsheet)
e. A (database)
f. E ( Modelling )
2. What is the full form of DBMS?
Ans2. Database Management System
3. List some of the task performed by operating system.
Ans3. An operating system performs mainly following tasks:
(i) Provides user interface
(ii) Controls hardware
(iii) Assigns Memory
(iv) Handles applications
(v) Handles/Manages devices
4. What are utility programs?
Ans4. Utilites are those application programs that assist the computer by performing housekeeping functions like backing up disk or scanning cleaning viruses etc.
5. Explain the following:-
a. Antivirus Software - This utility program ensures virus free work environment. A computer virus is a computer program that can inject other computer programs by modifying them in such a way as to include a copy of itself. A virus not only copies itself but also makes the computer system behave abnormally.
b. Encryption/Decryption Software- Encryption refers to the conversion of electronic data into another form, encrypted form called ciphertext. Decryption is opposite of Encryption, i.e., converting cipher text to original form using correct key. Some popular encryption/decryption software are: LastPass, BitLocker, VeraCrypt, 7Zip, Symantec Endpoint Encryption etc.
SADHU SINGH
T.G.T
COMPTUTER

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