31-Which of the following options is NOT a valid email address?
32-Which of the following computer devices is both an input and an output device and is also a storage device?
(C) Central Processing Unit
33-. In Computer parlance, which of the following options is NOT an Operating System?
(A) Windows XP
34-A malicious software program that can reside on a computer and can modify, delete the files and can make any software program to act in an unexpected manner is called a _____.
35-Laptops and Desktops are examples of _______computers.
(A) Super computer
(B) Mainframe computer
(C) Miniframe computer
(D) Micro computer
36-Which of the following is NOT a type of Operating System?
37-Which of the following is an Output device?
(D) Light Pen
38-From the following option, choose the disadvantage of internet.
(C) Cloud computing
(D) Knowledge and Learning
39-Which of the following is a Command Line-Operating System?
(A) Widows 7
(B) Windows 2000
(D) IOS 10
40-. USB refers to______________
(A) A serial bus
(B) a processor
(C) a port type
(D) a storage device
31-(A), 32-(C), 33-(D), 34-(C), 35-(D), 36-(C), 37-(B), 38-(A), 39-(C), 40-(C)