Mass Comm Bachelor of Communication Bachelor of Communication: Digital Media Techniques 2 — Questions and Answers
Question 1: Which video codec is most commonly used for web streaming due to its balance of quality and file size?
- H.264 (AVC) (Correct answer)
- DivX
- Theora
- RealVideo
Correct answer: H.264 (AVC)
H.264 (AVC) is the dominant web streaming codec because it delivers high quality at relatively low bitrates and is widely supported by browsers and devices.
Question 2: In digital audio production, what does the term 'bit depth' refer to?
- The number of audio channels recorded
- The number of bits used to represent each audio sample (Correct answer)
- The frequency range captured by a microphone
- The compression ratio applied to an audio file
Correct answer: The number of bits used to represent each audio sample
Bit depth determines how many bits are used per audio sample, which directly affects the dynamic range and accuracy of the audio recording.
Question 3: What is the purpose of a content delivery network (CDN) in digital media distribution?
- To compress video files before upload
- To serve content from geographically distributed servers to reduce latency (Correct answer)
- To convert analog media to digital formats
- To manage social media scheduling
Correct answer: To serve content from geographically distributed servers to reduce latency
A CDN distributes content across multiple servers worldwide so users receive data from a nearby server, reducing load times and buffering.
Question 4: Which color model is used for digital screens and online media?
- CMYK
- Pantone
- RGB (Correct answer)
- LAB
Correct answer: RGB
RGB (Red, Green, Blue) is the additive color model used by monitors, phones, and digital displays to produce color through light.
Question 5: In web design, what does 'responsive design' primarily accomplish?
- Speeds up server response times
- Adapts layout and content to different screen sizes and devices (Correct answer)
- Automatically translates content into multiple languages
- Encrypts user data for security
Correct answer: Adapts layout and content to different screen sizes and devices
Responsive design uses flexible grids, images, and CSS media queries to ensure a website displays correctly on devices ranging from phones to desktops.
Question 6: What is the function of metadata in digital media files?
- It compresses the file to reduce storage size
- It stores descriptive information about the file such as author, date, and keywords (Correct answer)
- It encrypts the file content for copyright protection
- It converts the file between formats
Correct answer: It stores descriptive information about the file such as author, date, and keywords
Metadata embeds descriptive data within a file—like title, creator, and tags—which aids searchability, organization, and copyright management.
Question 7: Which social media metric measures the percentage of people who clicked a link after seeing a post?
- Reach
- Impressions
- Click-through rate (CTR) (Correct answer)
- Engagement rate
Correct answer: Click-through rate (CTR)
Click-through rate (CTR) is calculated by dividing the number of clicks by the number of impressions, showing how compelling a post or ad is.
Mass Comm Bachelor of Communication Bachelor of Communication: Digital Media Techniques 2
Which video codec is most commonly used for web streaming due to its balance of quality and file size?