Computer Hardware and Software Questions and Answers

Answer: B

Correct answer: 2f8

The standard serial addresses are COM1 at 3F8, COM2 at 2F8, COM3 at 3E8 and COM4 at 2E8.

Answer: D

Correct answer: Ohms

Resistance is measured in ohms. Volts measure potential difference, amperes current and watts power.

Answer: D

Correct answer: no power to the primary corona

The primary corona lays the uniform negative charge that the laser then discharges selectively. Without it the drum is uncharged everywhere, so toner is attracted over the whole surface and the page comes out black.

Answer: D

Correct answer: The area where all of the processing takes place

The CPU fetches and executes the instructions, which is what processing means. Driving the monitor is the video card's work and regulating power the supply's.

Answer: C

Correct answer: All of the above

The strap protects the components from the technician's static charge, and its built-in resistor protects the technician by limiting any current that could pass to earth through the body.

Answer: C

Correct answer: Print head pins

The pins must run dry: oil on them collects paper dust and jams them, and they are cooled by airflow that a lubricant would impede. The platen, pulley and bearings are the parts that do need lubrication.

Answer: D

Correct answer: Incorrect CMOS settings

The BIOS reads the drive's geometry and mode from CMOS, so wrong settings there make a perfectly good disk unreadable and produce a fixed disk error. Bad RAM and a slow processor give quite different symptoms.

Answer: D

Correct answer: type 3

PC Card thicknesses are 3.3 mm for Type I, 5 mm for Type II and 10.5 mm for Type III.

Answer: D

Correct answer: First 64k of extended

The High Memory Area is the first 64 KB above the first megabyte - that is, the first 64 KB of extended memory - and it is reachable in real mode through an artefact of address wrapping, which is why DOS could be loaded into it.

Answer: C

Correct answer: The image is transferred from the drum to the paper

At the transfer stage the transfer corona puts a strong positive charge on the paper, which pulls the negatively charged toner off the drum and onto the page. The laser has already done its work at the writing stage; fusing comes next.