COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What does 16:9 or HD ratio resolution typically refer to?

1920 x 1080
1280 x 720
2560 x 1440
3840 x 2160

The correct answer is: 1920 x 1080

The 16:9 aspect ratio is a standard used widely in high-definition (HD) formats. The resolution 1920 x 1080, commonly known as Full HD, fits this aspect ratio perfectly. It ensures that for every 16 units of width, there are 9 units of height. This aspect ratio is not only prevalent in television screens but is also used in computer monitors and various streaming services, making it an important standard in digital media. While other resolutions like 1280 x 720 (which also adheres to the 16:9 aspect ratio) and 2560 x 1440 can be related to HD formats, 1920 x 1080 is often regarded as the quintessential measure of HD quality. 3840 x 2160 represents 4K resolution, which, although it maintains the 16:9 aspect ratio, exceeds the typical definition of high-definition that many people think of when referring to HD.