Question 1) CompTIA’s A+ Core Hardware Exam

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Objective: Installation, Configuration, and Upgrading
SubObjective: Identify the names, purpose, and characteristics, of system modules. Recognize these modules by sight or definition
Single Answer Multiple Choice

What is standard VGA resolution?

 

A. 640 x 350
B. 640 x 200
C. 720 x 350
D. 640 x 480

 

Answer:
D. 640 x 480

 

Tutorial:
Standard VGA (Video Graphics Array) was introduced in 1987, and the VGA definition has not changed. VGA systems can display 640 x 480 pixels using 16 colors in graphics mode and 720 x 400 pixels using 16 colors in text mode. Improved VGA systems that are capable of displaying at higher resolutions and using more colors are referred to as Super VGA. The minimum requirement for SVGA compatibility is 640 x 480 and 256 colors. Typical SVGA systems operate at 800 x 600 or better, with thousands or millions of colors. The SVGA definition continues to expand. Video controllers capable of 2048 x 1152 screen width and 128-bit color are available.

 

By contrast,
640 x 350 is the resolution of Enhanced Graphics Adapter (EGA). EGA is an older standard that was first introduced in 1984.

 

640 x 200 is the resolution of Color Graphics Adapter (CGA). CGA is an even older technology, introduced in 1981.

 

720 x 350 is the resolution of Monochrome Display Adapter (MDA). MDA was also introduced in 1981. It does not support color or graphics.

 

Reference:
1. A+ Training Guide – Basic Terms and Concepts
– Inside the System Unit – Adapter Cards – Video Adapter Cards

 

These questions are derived from the Self Test Software Practice Test for CompTIA Exam #220-301: A+ 2003 Core Hardware.

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