Technology MCQs

✅ The correct answer is option A.

✅ The correct answer is option A.
IBM also created it’s own version of DOS called PC-DOS.

✅ The correct answer is option D.

✅ The correct answer is option A.
Electricity is voltage and current. Voltage is electrical pressure, and current is the flow of charged particles. The difference between alternating current (AC) and direct current (DC) is that the electrons in an AC circuit regularly reverse their direction. In a DC circuit electrons always flow in the same direction.

✅ The correct answer is option B.
Some authorities are recommending TV’s, VCR’s and Stereo’s be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.

✅ The correct answer is option D.
Before the invention of word processing and spreadsheet software, personal computers had little value in the mainstream business world. WordStar was used before the days of function keys and the mouse. It, instead, used a set of Ctrl and Alt key combinations to navigate and edit text documents.

✅ The correct answer is option A.

✅ The correct answer is option A.

✅ The correct answer is option D.
The transistor, which essentially is a solid-state electronic switch, replaced the much less suitable vacuum tube. Because the transistor consumed significantly less power, a computer system built with transistors was much smaller, faster and more efficient than a computer system built with vacuum tubes.

✅ The correct answer is option C.
This voltage often remains in storage even if the set is unplugged. Although the voltage is very high it has very low power but it can be dangerous because your body jumps if brought in contact.