Presentation Software and Multimedia
What the domain covers
Presentation Software and Multimedia tests how to build clear slide decks and handle images, audio, and video. Expect questions on masters and layouts, transitions versus animations, timing, file formats, compression, resolution, and embedding or linking media.
Core rules and concepts
- The slide master stores theme fonts, colours, background, and placeholder positions. Layouts define arrangements for title, content, and media.
- A transition is the effect between slides; an animation applies to an object on a slide. Overusing either distracts from content.
- Presenter tools include speaker notes, rehearsal timing, and slide show controls. Keep one idea per slide and use readable contrast.
- Common image formats: JPEG for photographs (lossy), PNG for graphics with transparency (lossless), GIF for simple animation. MP3 and MP4 are compressed audio/video formats.
- Resolution is pixel dimensions; aspect ratio is width:height (16:9 or 4:3). Scaling a low-resolution image up makes it blurry.
- Embedded media is stored inside the presentation file; linked media remains external and can break when the file moves.
- Alt text and captions improve accessibility; closed captions also help in noisy rooms.
Worked example
An uncompressed 1920 × 1080 image uses 24 bits per pixel (3 bytes). Pixels = 1920 × 1080 = 2,073,600. Raw size = 2,073,600 × 3 = 6,220,800 bytes ≈ 5.93 MiB (using 1 MiB = 1,048,576 bytes). Reason: resolution gives the pixel count, bit depth gives bytes per pixel, and compression can reduce the stored size. A JPEG of the same image may be far smaller because it discards some detail.
Traps that cost marks
Do not call a slide transition an animation. Linking media keeps the file small but risks missing files; embedding increases size but travels with the deck. A 16:9 deck shown on a 4:3 projector may letterbox. Font substitution can change layout if fonts are not embedded or available. Pixel dimensions, not file size alone, determine sharpness.