Technology MCQs

153. In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about?

by
A. 500 volts
B. 5 thousand volts
C. 25 thousand volts
D. 100 thousand volts
✅ The correct answer is option B.
The flyback is usually connected to the system that pulls the electron beam across the screen in one direction to ‘paint’ a line of the image and then returns in the other direction much faster.

154. The Central Processing Unit is an embeded chip that acts as the ‘brains’ of a computer. What Intel chip was used in the Altair (the first real personal computer)?

by
A. 6502
B. 8080
C. 6400
D. 8286
✅ The correct answer is option B.
The Intel 8080 was a jazzed-up calculator chip. It was included in microcomputer kits which were little more than demonstration tools and did little except blink lights. Besides the 8080 chip, the Altair included a power supply, a front panel with a large number of lights and 256 bytes (not kilobytes) of memory. The kit sold for {$395} and had to be assembled.

159. A program that neither replicates or copies itself, but does damage or compromises the security of the computer. Which ‘Computer Virus’ it is?

by
A. Joke Program
B. Worm
C. Trojan
D. Hoax
✅ The correct answer is option C.
Typically it relies on someone emailing it to you, it does not email itself, it may arrive in the form of a joke program or software of some sort.