MM EXAM

What best describes a 'pixel'?

• A small colored tile that makes up a digital image
• A software used to edit photos
• The size of an image file
• A type of camera lens

Answer explanation

A pixel is the smallest unit of a digital image, similar to a tiny colored tile in a mosaic. The more pixels an image has, the clearer and more detailed it appears.

Which image type is best suited for creating logos and graphics that need to scale without losing quality?

• Raster images (made of pixels)
• Vector images (made of paths)
• JPEG files
• GIF animations

Answer explanation

Vector images are made of mathematical paths rather than pixels, making them infinitely scalable without quality loss. This makes them perfect for logos that need to appear clearly at any size.

What is the main difference between RGB and CMYK color models?

• RGB is for screens, CMYK is for printing
• RGB has more colors than CMYK
• CMYK is newer than RGB
• RGB is only for photography

Answer explanation

RGB (Red, Green, Blue) is used for digital screens and displays light-based colors. CMYK (Cyan, Magenta, Yellow, Black) is used for printing with ink-based colors.

Why would you choose 300 DPI over 72 DPI for an image?

• 300 DPI loads faster on websites
• 300 DPI provides higher quality for printing
• 300 DPI takes up less storage space
• 300 DPI is better for web display

Answer explanation

DPI stands for Dots Per Inch. 300 DPI means more dots packed into each inch, creating sharper, clearer images ideal for print. 72 DPI is sufficient for screens but would look pixelated when printed.

Which file format does not supports transparent backgrounds?

• PNG
• GIF
• JPEG
• SVG

Answer explanation

PNG, GIF, and SVG all support transparency. JPEG does not support transparent backgrounds and will always show a solid background color.

What role does 'silence' play in multimedia audio?

• It indicates an error in the audio file
• It builds tension and focuses user attention
• It reduces file size only
• It has no purpose in multimedia

Answer explanation

Silence is a powerful audio element used strategically to create tension, emphasize moments, or focus user attention. It's commonly used in horror movies and dramatic pauses.

What best describes 'sampling rate' in audio?

• The volume level of the audio
• The number of sound samples captured per second
• The file format of the audio
• The length of the audio track

Answer explanation

Sampling rate (measured in Hz) is how many times per second the audio is sampled/recorded. Higher sampling rates like 44.1 kHz capture more sound detail, resulting in clearer audio quality.

Why would you choose WAV format over MP3 for a project?

• WAV files are smaller and load faster
• WAV is uncompressed with perfect audio quality
• WAV works better for streaming
• WAV is supported by more devices

Answer explanation

WAV is uncompressed audio format that preserves perfect, lossless quality. While file sizes are larger, it's ideal for professional studio recording and editing where quality matters most.

What is the purpose of 'Sound Effects (SFX)' in multimedia?

• To make files larger
• To add realism and provide feedback for user actions
• To replace background music
• To reduce production costs

Answer explanation

Sound effects add realism to multimedia experiences and provide important feedback for user interactions, like button clicks or explosions in games.

What does 'bit depth' affect in audio quality?

• The speed of playback
• The amount of detail captured in each audio sample
• The file format type
• The length of the recording

Answer explanation

Bit depth determines how much detail is captured in each sound sample. Higher bit depth (like 24-bit) captures richer, more dynamic audio with greater detail than lower bit depth (like 8-bit).