(A) Use of username and password
(B) Use of two or more authentication methods
(C) Use of access cards
(D) Use of biometrics
Answer: (D) Use of biometrics
Category: Computer Science MCQs Class 9
Computer Science solved multiple choice questions (MCQs) for class 9 with answers.
A person who illegally breaks into other’s computer system is called:
(A) Computer Engineer
(B) System Programmer
(C) Hacker
(D) Cracker
Answer: (D) Cracker
DOS is ___________ type of Operating System.
(A) Command Line Interface
(B) Menu devises Interface
(C) Time sharing Interface
(D) Graphical user Interface
Answer: (A) Command Line Interface
‘Pairing’ of devices is done in:
(A) Bluetooth Network
(B) Metropolitan Area Network
(C) Wide Area Network
(D) Personal Area Network
Answer: (A) Bluetooth Network
Which of the following is NOT a communication device?
(A) Router
(B) Modem
(C) Switch
(D) Cache
Answer: (D) Cache