1221. A dot-matrix printer
A. is an input device
B. is an output device
C. cannot print alphabet
D. has a speed of 1000 cps
✅ The correct answer is option B.
Computer
Prepare with the best Computer MCQs with answers and explanations for exams and job tests. Our question bank covers computer fundamentals, hardware, software, networking, operating systems, databases, programming, internet, and information technology. These Computer multiple-choice questions are helpful for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, IT certifications, and job interviews. Practice online to improve your knowledge and score higher with our updated and comprehensive Computer MCQs.
1222. A software package to perform calculations on data arranged in an array is
A. System software
B. Utility programs
C. Electronic spread sheet
D. Application programs
✅ The correct answer is option C.
1223. The main purpose of the off line device is
A. To reduce the no.of operator errors in recording data
B. To save computer time
C. To save floor space in the computer centre
D. All of the above
✅ The correct answer is option B.
1224. The computers that we use are digital whereas we live in an analog world which means that we have to translate analog data into digital data. What is the name of the circuit which helps us in this conversion?
A. D/A converter
B. A/D converter
C. Voice recognition
D. Adapter
✅ The correct answer is option B.
1225. A beam of light used to record and retrieve data on optical disks is known as
A. polarized light
B. unpolarized concentric light
C. laser
D. coloured light
✅ The correct answer is option C.
1226. A wireless technology built in electronic gadgets used for exchanging data over short distances is ______
A. USB
B. Bluetooth
C. Modem
D. Wifi
✅ The correct answer is option B.
1227. A physical connection between the microprocessor memory and other parts of the microcomputer is known as
A. Path
B. Address bus
C. Route
D. All of the above
✅ The correct answer is option B.
1228. Can you tell what passes into and out from the computer via its ports?
A. Data
B. Bytes
C. Graphics
D. Pictures
✅ The correct answer is option B.
1229. The Josephson tunneling device illustrates principles associated with the advanced storage technique:
A. cryogenics
B. CCD
C. EBAM
D. holographing
✅ The correct answer is option A.
1230. An electronic circuit with about 20 transistors fabricated on a silicon chip is known as
A. SSI
B. MSI
C. DPS
D. RJE
✅ The correct answer is option A.