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Free Practice Quiz Question List

5 File Formats and Codecs Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 File Formats and Codecs, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

GIF is a common image format that supports simple animation.

  1. A

    True

  2. B

    False

02
Choose one
1 point

Which image format is commonly used for compressed photographs?

  1. A

    JPEG/JPG

  2. B

    TIFF

  3. C

    GIF

  4. D

    PNG

03
Written response
1 point

What acronym names the tag format that MP3 files can use to store metadata?

04
Fill in the blank
1 point

PNG supports lossless images and .

05
True or false
1 point

Metadata for a media file may be stored in the file itself or in a separate catalog or sidecar file.

  1. A

    True

  2. B

    False

06
Choose one
1 point

Which format is specifically described as compressing audio without losing the original audio data?

  1. A

    WAV, because it always uses lossy compression

  2. B

    FLAC, because it compresses audio without losing the original audio data

  3. C

    MP3, because it is lossless

  4. D

    AAC, because it is uncompressed PCM

07
Written response
1 point

What is the technical term for the file structure that holds media streams and related information?

08
Fill in the blank
1 point

WebP and AVIF can each store images.

09
Choose all
1 point

Select all items that are examples of metadata described for media files.

  1. A

    Image dimensions

  2. B

    Audio sample rate

  3. C

    Title

  4. D

    Creator

  5. E

    The file extension as a guarantee of codec support

10
True or false
1 point

Repeatedly editing and re-encoding a lossy file can reduce its quality further.

  1. A

    True

  2. B

    False

11
Choose all
1 point

When preparing a media file for use in a particular destination, select all recommended actions.

  1. A

    Check the requirements of the destination website, app, device, or editing tool.

  2. B

    Choose a format suited to the task.

  3. C

    Verify the container and the codecs used for each stream.

  4. D

    Test the exported file in the intended software.

  5. E

    Keep a high-quality original when quality or future editing matters.

  6. F

    Assume that a familiar filename extension guarantees playback.

12
Choose one
1 point

You need a compressed copy for sharing but may want to continue editing the media later. What is the best preservation choice?

  1. A

    Delete the original as soon as the compressed copy is exported.

  2. B

    Retain a high-quality source before making compressed copies.

  3. C

    Keep only a lossy copy because it always preserves more detail.

  4. D

    Convert the original to a smaller file even if future editing is important.

13
Choose one
1 point

Two video files both end in .mp4, but a device plays one and not the other. Which explanation best fits how containers and codecs work?

  1. A

    MP4 files always contain identical video and audio streams.

  2. B

    A filename extension determines whether the device has enough processing capability.

  3. C

    The files may contain different codecs even though both use the MP4 container.

  4. D

    An MP4 file cannot contain audio.

14
Open ended
1 point

You are preparing an image for public sharing. Its metadata may include private location information, but its title and copyright details should remain available. What should you check before sharing and after exporting?

15
Choose one
1 point

A media file contains H.264 video and AAC audio and uses an MP4 container. Which description correctly explains the roles of these formats?

  1. A

    MP4 encodes the video, while H.264 and AAC organize the streams.

  2. B

    MP4 organizes the streams, while H.264 and AAC encode them.

  3. C

    MP4 and H.264 are both audio codecs, while AAC is the container.

  4. D

    MP4 stores only metadata, while H.264 and AAC are containers.

16
Choose one
1 point

A team repeatedly edits and re-encodes a lossy media file. Which outcome should it expect?

  1. A

    Each edit restores information discarded by earlier encoding.

  2. B

    Repeated editing changes the container but cannot affect quality.

  3. C

    Repeated editing and re-encoding can reduce quality further.

  4. D

    Lossy compression becomes lossless after the first edit.

17
Written response
1 point

You need an image format that supports transparency and lossless images. Which format named in the material meets both requirements?

18
Choose one
1 point

Someone wants compressed audio while preserving the original audio data. Which format best fits that requirement?

  1. A

    FLAC, because it compresses audio without losing the original audio data.

  2. B

    MP3, because it uses lossless compression.

  3. C

    Opus, because it is defined as uncompressed PCM audio.

  4. D

    WAV, because it always uses lossless compression to make files smaller.

19
Written response
1 point

For the broadly compatible web-video combination MP4 with AAC audio, which video codec is commonly used?

20
Choose one
1 point

A video has a familiar extension, but a device cannot play it. Which explanation is consistent with how media compatibility works?

  1. A

    The filename extension is unfamiliar, even though all streams are supported.

  2. B

    The file contains metadata, which prevents all devices from playing it.

  3. C

    The container is supported, so every codec and profile must also be supported.

  4. D

    A stream's codec, profile, level, or features may be unsupported, or the device may lack sufficient processing capability.