(A) Coaxial cables
(B) Infrared
(C) Fibre Optic cable
(D) Twisted cable
Answer: (B) Infrared
Category: Computer Science MCQs Class 9
Computer Science solved multiple choice questions (MCQs) for class 9 with answers.
Which of following is a non-impact printer?
(A) Dot-matrix
(B) Daisy-wheel
(C) Line printer
(D) Laser
Answer: (D) Laser
MS-Word saves file with which of the following file extension?
(A) .txt
(B) .wp
(C) .doc
(D) .bak
Answer: (C) .doc
A network that places all nodes on a single cable is called:
(A) Star topology
(B) Ring topology
(C) Band topology
(D) Bus topology
Answer: (D) Bus topology
The process of converting digital signals into analog signals is called:
(A) Modulation
(B) Switching
(C) Telecommunication
(D) Demodulation
Answer: (A) Modulation