(A) Data validation
(B) Data filtering
(C) Conditional formatting
(D) Data manipulation
Answer: (A) Data validation
Category: Computer Science MCQs Class 9
Computer Science solved multiple choice questions (MCQs) for class 9 with answers.
Which of the following authentication method is most reliable?
(A) User name and password
(B) PIN
(C) Access Card
(D) Biometrics
Answer: (D) Biometrics
Which malware spreads automatically in computer network and replicates itself?
(A) Virus
(B) Worm
(C) Adware
(D) Spyware
Answer: (B) Worm
Which of the following topology is most expensive to implement?
(A) Star
(B) Bus
(C) Ring
(D) Mesh
Answer: (D) Mesh
Which of the following network provides centralized security?
(A) Client/Server Network
(B) Peer-to-Peer
(C) Local Area Network
(D) Point-to-Point Network
Answer: (A) Client/Server Network