Revision quiz

PDF is an acronym for

• (a) Portable Document Folder

• (b) Pictorial Document Format

• (c) Portable Document Format

• (d) Portal Document Format

Answer explanation

PDF stands for "portable document format".  Essentially, the format is used when you need to save files that cannot be modified but still need to be easily shared and printed.  Today almost everyone has a version of Adobe Reader or other program on their computer that can read a PDF file.

The end of a file that helps a computer identify the type of file in an operating system and usually starts with a period (.) is called

• (a) File Path

• (b) File Name

• (c) File Extension

• (d) command line interface

Answer explanation

Your computer has many different types of files on it, and each one has its own file extension. A file extension is a three- or four-letter identifier found at the end of a file name and following a period. These extensions tell you about the characteristics of a file and its use.

Which of the following is not a file extension for audio

• (a) .png

• (b) .wma

• (c) .wav

• (d) .mp3

Answer explanation

PNG is a picture file extension.

MP3 stands for MPEG-1 Audio Layer 3. It was released back in 1993 and exploded in popularity, eventually becoming the most popular audio format in the world for music files. There's a reason why we had "MP3 players" but not "OGG players"!

The main goal of MP3 is three-fold:

To drop all the sound data that exists beyond the hearing range of normal people.

To reduce the quality of sounds that aren't easy to hear.

To compress all other audio data as efficiently as possible.

Nearly every digital device in the world with audio playback can read and play MP3 files, whether we're talking PCs, Macs, Androids, iPhones, Smart TVs, or whatever else. When you need universal, MP3 will never let you down, which is why it's one of the world's most popular audio file formats.

Which of the following is used to start or stop a flowcharts

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Answer explanation

The terminator symbol marks the starting or ending point of the system. It usually contains the word "Start" or "End."

Which of the following is a decision box for flowcharts

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Answer explanation

A decision or branching point. Lines representing different decisions emerge from different points of the diamond.

Which of the following is an input/output symbol for flowcharts

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Answer explanation

input/output symbol represents material or information entering or leaving the system

Which of the following is a process symbol for flowcharts

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Answer explanation

Action or Process Symbol

A box can represent a single step ("add two cups of flour"), or and entire sub-process ("make bread") within a larger process.

The file extension for a Microsoft Word Document?

• (a). dcc

• (b).doc

• (c).xls

• (d).ppt

Which of the following is not a file extension for documents, spreadsheets and text

• (a) .doc

• (b) .pdf

• (c) .wav

• (d) .xls

Answer explanation

.wav file extensions are for audio/sound just like mp3.

What is the extension of a PowerPoint file?

• (a).ppt

• (b).tt

• (c).txt

• (d).pptx

Answer explanation

.ppt and .pptx are both file extensions for PowerPoint documents with the latter being an upgraded version