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Computers and Digital Content Quick Quiz

Digital Basics Quick Quiz

Q1. Data representation refers to the format in which data is stored, processed, and transmitted.

Q2. Digital devices often use the binary number system to represent numeric data.

Q3. Most computers use Unicode or Extended ASCII code to represent character data. (Hint: Use the acronym.)

Q4. KB is the abbreviation for KiloByte.

Q5. Character data and numeric data are compressed using lossless compression that reconstitutes data exactly to its original state.

Q6. Data becomes information when it is presented in a format that people can understand and use.

Q7. The binary number system has only two digits: 1 and 2. False

Q8. ASCII requires seven bits for each character.

Q9. A group of eight bits is called a byte.

Digital Sound Quick Quiz

Q10. Sampling rate refers to the number of times per second that sound is measured during the recording process.

Q11. Audio formats such as MP3, Ogg Vorbis, and AAC have good sound quality even though they use lossy compression.

Q12. The process of ripping tracks from an audio CD to a digital format such as MP3 is called digital audio extraction.

Q13. MIDI files store a series of instructions that specify which notes to play, their duration, and their volume.

Q14. The audio components for Siri and similar services are obtained by recording actors and then applying concatenative speech synthesis.

Q15. Digital audio is music, speech, and other sounds represented in binary format for use in digital devices.

Q16. Which of the following is NOT a format that is used for digital audio? DOC

Q17. MIDI files are less compact than digital audio files. False

Q18. Speech synthesis is the process by which machines produce sound that resembles spoken words.

Bitmap Graphics Quick Quiz

Q19. A digital camera captures images on the photosites of a(n) CCD. (Hint: Use the acronym.)

Q20. A characteristic of bitmap graphics is that they are resolution dependent, so that reducing the resolution also reduces the image quality.

Q21. Graphics stored in True Color format require 24 bits for each pixel.

Q22. The most popular True Color formats for Web graphics include PNG and JPEG. (Hint: use the acronym.)

Q23. Digital photographs are stored as bitmap files. True

Q24. Today’s color display devices represent color using the RGB color model.

Q25. Image compression refers to any technique that recodes the data in an image file so that it contains fewer bits.

Vector Graphics Quick Quiz

Q26. Vector graphics require more storage space than bitmaps, but vectors can be enlarged without becoming pixelated. True or false? True

Q27. A process called rasterization converts vector graphics into bitmap images.

Q28. Based on XML, SVG is a popular format for vector graphics on the Web.

Q29. A 3-D image is based on an assemblage of vectors called a(n) wireframe.

Q30. The technique of adding light and shadows to a 3-D image is called ray tracing.

Q31. An undesirable jagged appearance is referred to as pixelation.

Q32. When you change the size of a(n) vector graphic, the objects change proportionally and maintain their smooth edges.

Q33. Both scanners and digital cameras produce vector graphics. False

Q34. A vector graphic can be converted into a bitmap graphic through a process called rasterizing

Q35. The process of covering a wireframe with surface color and texture is called rendering

Digital Video Quick Quiz

Q36. The process of converting analog video signals into digital format is referred to as video capture.

Q37. A(n) codec is the software that compresses a video stream when a video is stored, and decompresses the file when the video is played.

Q38. The “p” in 1080p stands for progressive scan.

Q39. MP4 is an example of a video container format.

Q40. Digital videos can be converted from one file format to another through a process called transcoding.

Q41. Digital video uses bits to store color and brightness data for each video frame. True

Q42. Bit rate is the number of bits that are processed during a specific unit of time, usually during one second.

Q43. Bit rate can be scaled down by reducing the resolution and applying compression techniques.

Q44. In digital video, a lower resolution reduces the bit rate. True