Dig Test 2 Practice Test

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  • 1/34 Questions

    A byte is represented in how many values?

    • 180
    • 256
    • 191
    • 360
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About This Quiz

This practice test covers key concepts in digital graphics, including color processes, pixel luminance, image compression, data representation, and techniques to reduce aliasing.

Computer Quizzes & Trivia

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  • 2. 

    According to the article on passwords, your passwords should be at least _____ characters long

    • 5

    • 8

    • 9

    • 14

    Correct Answer
    A. 8
    Explanation
    According to the article on passwords, it is recommended that passwords should be at least 8 characters long. This is because longer passwords are generally more secure and harder for hackers to guess or crack. A longer password provides a larger pool of possible combinations, making it more difficult for brute force attacks or dictionary attacks to be successful. Therefore, it is advisable to use passwords that are at least 8 characters long to enhance the security of your accounts.

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  • 3. 

    _______ is the control protocol for describing music.

    • MDIC

    • MIDI

    • Harmonics

    • ADSR

    Correct Answer
    A. MIDI
    Explanation
    MIDI (Musical Instrument Digital Interface) is the control protocol for describing music. It is a standard protocol that allows electronic musical instruments, computers, and other devices to communicate and synchronize with each other. MIDI messages contain information about musical notes, timing, and other performance parameters, allowing musicians and composers to create, edit, and playback music on different MIDI-compatible devices. MIDI has become the industry standard for music production and performance, enabling the seamless integration of various musical instruments and equipment.

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  • 4. 

    A ________ is 1024 bits.

    • Petabit

    • Megabit

    • Kilobit

    • Gigabit

    Correct Answer
    A. Kilobit
    Explanation
    A kilobit is a unit of digital information that consists of 1024 bits. It is commonly used to measure data transfer rates and storage capacity.

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  • 5. 

    Which of the following is not one of the four process printer colors?

    • Cyan

    • Black

    • Yellow

    • Red

    Correct Answer
    A. Red
    Explanation
    The question asks for the color that is not one of the four process printer colors. The four process printer colors are Cyan, Magenta, Yellow, and Black (CMYK). Red is not one of the process colors used in printing.

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  • 6. 

    What is the measure of the light intensity, or luminance, that a pixel puts out?

    • Contrast

    • Brightness

    • Hue

    • Saturation

    Correct Answer
    A. Brightness
    Explanation
    Brightness refers to the measure of the light intensity or luminance that a pixel puts out. It determines how light or dark a pixel appears on a screen. Higher brightness values indicate a brighter pixel, while lower values indicate a darker pixel. Therefore, brightness is the correct answer to the question.

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  • 7. 

    What is the number of possible values at each sample point?

    • Graphics

    • Bit depth

    • Frequency

    • Amplitude

    Correct Answer
    A. Bit depth
    Explanation
    Bit depth refers to the number of possible values that can be assigned to each sample point in a digital image or audio file. It determines the level of detail and accuracy in representing the colors or sound levels. A higher bit depth allows for a larger range of values, resulting in more precise and realistic representations. Therefore, the number of possible values at each sample point is determined by the bit depth.

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  • 8. 

    Pixels determine the size of the image in __________ images.

    • Bitmap

    • Vector

    • Both

    • Neither

    Correct Answer
    A. Bitmap
    Explanation
    Pixels determine the size of the image in bitmap images. Bitmap images are made up of individual pixels, and the size of the image is determined by the number of pixels it contains. Each pixel represents a single point in the image and contains information about its color and brightness. Therefore, the more pixels an image has, the higher its resolution and the larger its size. Vector images, on the other hand, are not made up of pixels and can be resized without losing quality.

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  • 9. 

    What is rasterizing?

    • Transforming bitmap to vector

    • Transforming vector to bitmap

    • Transforming SVG to JPG

    • Transforming JPG to SVG

    Correct Answer
    A. Transforming vector to bitmap
    Explanation
    Rasterizing refers to the process of converting vector graphics, which are made up of mathematical equations and lines, into a bitmap or raster image composed of pixels. This transformation is necessary when vector graphics need to be displayed on devices or platforms that only support raster images, such as computer screens or printers. By converting the vector graphics to a bitmap format, the image can be rendered accurately with each pixel representing a specific color or shade. Therefore, transforming vector graphics to a bitmap is the correct explanation for rasterizing.

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  • 10. 

    Which of the following is the color that corresponds with #FF0000

    • Red

    • Green

    • Blue

    • Purple

    Correct Answer
    A. Red
    Explanation
    The color that corresponds with #FF0000 is Red. The hexadecimal code #FF0000 represents the maximum intensity of red (FF) and no intensity of green (00) and blue (00), resulting in a pure red color.

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  • 11. 

    What does the term DRM refer to?

    • The rights of a user to have a packet-neutral internet connection

    • The rights of a company to be able to offer different bandwidths at different pricing levels

    • The rights of an artist to protect their work from illegal copying and distribution

    Correct Answer
    A. The rights of an artist to protect their work from illegal copying and distribution
    Explanation
    The term DRM refers to the rights of an artist to protect their work from illegal copying and distribution. DRM stands for Digital Rights Management, which is a set of technologies and techniques used to control access to digital content and prevent unauthorized copying or distribution. It allows artists to protect their intellectual property and ensure that they are properly compensated for their work.

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  • 12. 

    If you are editing a picture, and you set the contrast to its highest level, what will occur?

    • Only gray

    • Only white

    • Only black

    • Black and white

    Correct Answer
    A. Black and white
    Explanation
    When the contrast is set to its highest level while editing a picture, it will result in black and white. Increasing the contrast enhances the difference between the lightest and darkest areas of the image, making the dark areas appear black and the light areas appear white. This creates a high level of contrast between the two extremes, resulting in a black and white image.

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  • 13. 

    Who is the father of the information theory?

    • Harry Nyquist

    • Claude Shannon

    • Shannon-Nyquist

    • Blue-haired kid

    Correct Answer
    A. Claude Shannon
    Explanation
    Claude Shannon is considered the father of information theory. He was an American mathematician and electrical engineer who made significant contributions to the field. Shannon's groundbreaking work laid the foundation for the modern understanding of communication and information processing. He introduced key concepts such as entropy, channel capacity, and the mathematical theory of communication. His work revolutionized various fields, including telecommunications, cryptography, and computer science. Shannon's contributions have had a profound impact on our ability to transmit, store, and process information efficiently and reliably.

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  • 14. 

    Which of the following is not a valid location for CSS?

    • Sheet

    • External

    • Internal

    • Inline

    Correct Answer
    A. Sheet
    Explanation
    The term "Sheet" is not a valid location for CSS. CSS can be applied in three different ways: External, Internal, and Inline. External CSS is stored in a separate file with a .css extension and linked to the HTML document. Internal CSS is written within the tag in the head section of an HTML document. Inline CSS is directly applied to individual HTML elements using the style attribute. However, "Sheet" is not a recognized location for CSS.

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  • 15. 

    Which of the following styles is related to the space inside a box?

    • Margin

    • Border

    • Position

    • Padding

    Correct Answer
    A. Padding
    Explanation
    Padding is the correct answer because it refers to the space between the content and the border of a box. It is used to create space within the box, allowing the content to be visually separated from the border. Margin, on the other hand, is the space outside the border, while border refers to the line or area that surrounds the content and padding. Position is not directly related to the space inside a box, as it determines the placement of the box on the page.

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  • 16. 

    What company developed the standard in the 1950's for analog transmissions?

    • MIDI

    • BetaCam

    • CompuServe

    • RCA

    Correct Answer
    A. RCA
    Explanation
    RCA developed the standard for analog transmissions in the 1950s. They were a major electronics company during that time and played a significant role in the development of various technologies, including television and radio broadcasting. RCA's standard for analog transmissions set the foundation for the widespread adoption of analog communication systems during that era.

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  • 17. 

    Who cracked the code of a secret 'barcode' on many Xerox printers?

    • Electronic Frontier Foundation

    • CompuServe

    • US Govt.

    • Hewlett Packard

    Correct Answer
    A. Electronic Frontier Foundation
    Explanation
    The Electronic Frontier Foundation is a non-profit organization that focuses on defending civil liberties in the digital world. They are known for their advocacy work on issues such as privacy, free speech, and encryption. In 2001, the Electronic Frontier Foundation discovered a secret "barcode" embedded in many Xerox printers that could be used to track and identify documents printed on those machines. This discovery brought attention to potential privacy concerns and led to a public debate about the use of such tracking technologies.

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  • 18. 

    Which of the following computers came first?

    • UNIVAC

    • ENIAC

    • PDP-8

    • BRAINIAC

    Correct Answer
    A. ENIAC
    Explanation
    ENIAC came first among the given options. ENIAC (Electronic Numerical Integrator and Computer) was the first general-purpose electronic digital computer. It was developed during World War II and completed in 1945. UNIVAC (Universal Automatic Computer) came after ENIAC in 1951, PDP-8 was introduced in 1965, and BRAINIAC is not a known computer in the context of computer history.

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  • 19. 

    True of false:Metafiles are coalescing fields around spheres.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Metaballs, not metafiles...idiot.

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  • 20. 

    True or false:In the human eye, cones are active in dim lighting.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    rods are active in dim lighting

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  • 21. 

    Which is more useful in situations where image compression involved solid colors repeating often?

    • Lossless

    • Lossy

    • Neither

    • Both

    Correct Answer
    A. Lossless
    Explanation
    In situations where image compression involves solid colors repeating often, lossless compression would be more useful. Lossless compression algorithms are designed to preserve all the original data and ensure that there is no loss in quality. This would be beneficial in scenarios where solid colors are repeated often because lossy compression, which involves discarding some data to achieve higher compression ratios, may result in a loss of detail and introduce artifacts in the image. By using lossless compression, the image can be compressed without sacrificing any quality, making it more suitable for situations where solid colors are repeated frequently.

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  • 22. 

    True or false:Lossless compression drops visually insignificant data to reduce the file size.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Lossy drops data

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  • 23. 

    Which of the following was not an older codec?

    • Cinepak

    • Indeo

    • Sorensen

    • CompuServe

    Correct Answer
    A. CompuServe
    Explanation
    CompuServe was not an older codec. Cinepak, Indeo, and Sorensen were all popular codecs used in the past for video compression. CompuServe, on the other hand, was an early online service provider that offered email, forums, and file downloads, but it was not a codec used for video compression.

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  • 24. 

    What is the process of converting a continuous stream of info to a discrete signal?

    • Rendering

    • Flattening

    • Distorting

    • Sampling

    Correct Answer
    A. Sampling
    Explanation
    Sampling is the process of converting a continuous stream of information into a discrete signal by selecting and measuring specific points from the continuous signal at regular intervals. This allows for the representation and transmission of the information in a digital format, which can be easily processed and stored. Sampling is commonly used in various fields such as audio and video processing, telecommunications, and data acquisition.

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  • 25. 

    What is the process that adds small amount of noise, reducing the presence of aliasing?

    • Dithering

    • Anti-aliasing

    • Posterization

    • Rendering

    Correct Answer
    A. Dithering
    Explanation
    Dithering is the process of adding a small amount of noise to an image or signal in order to reduce the presence of aliasing. Aliasing occurs when a signal is sampled or displayed at too low of a resolution, causing jagged edges or distortion. By adding noise, dithering can help smooth out these jagged edges and create a more natural and visually pleasing appearance. This technique is commonly used in digital image processing and computer graphics to improve the overall quality of an image.

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  • 26. 

    Which of the following requires a license?

    • GIF

    • JPG

    • TIFF

    Correct Answer
    A. GIF
    Explanation
    GIF (Graphics Interchange Format) requires a license because it is a patented file format that was developed by CompuServe. The patent for GIF technology expired in 2003, but certain aspects of the format, such as the LZW compression algorithm, are still protected by other patents. Therefore, to use GIF technology legally, a license is required. On the other hand, JPG (JPEG) and TIFF (Tagged Image File Format) do not require a license as they are open and widely supported file formats.

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  • 27. 

    Which MPEG would you use for higher quality?

    • MPEG1

    • MPEG2

    • MPEG4

    Correct Answer
    A. MPEG2
    Explanation
    MPEG2 would be the preferred choice for higher quality. This is because MPEG2 is designed to handle higher bit rates and resolutions, making it suitable for applications that require better video quality, such as DVD and broadcast television. MPEG1, on the other hand, is more commonly used for lower quality videos, while MPEG4 is known for its efficient compression and is often used for streaming and online video content.

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  • 28. 

    This technology is a separate formatting language from the content in HTML

    • XML

    • CSS

    • HTTP

    • FTP

    Correct Answer
    A. CSS
    Explanation
    CSS (Cascading Style Sheets) is a separate formatting language from the content in HTML. It is used to describe the presentation of a document written in HTML or XML. CSS allows web designers to control the layout, colors, fonts, and other visual aspects of a webpage. It is not a programming language but rather a style sheet language that works alongside HTML to enhance the visual appearance of a website.

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  • 29. 

    Which of the following is equivalent to decimal 72?

    • 1001000

    • 1001110

    • 0111010

    • 1000100

    Correct Answer
    A. 1001000
    Explanation
    The decimal number 72 is equivalent to the binary number 1001000. In binary representation, each digit represents a power of 2, starting from the rightmost digit as 2^0, then increasing by a power of 2 for each subsequent digit. The binary number 1001000 can be calculated as (1 * 2^6) + (0 * 2^5) + (0 * 2^4) + (1 * 2^3) + (0 * 2^2) + (0 * 2^1) + (0 * 2^0) = 64 + 8 = 72.

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  • 30. 

    Logical pixels show _________.

    • Depth

    • Contrast

    • Color

    • Position

    Correct Answer
    A. Color
    Explanation
    Logical pixels show color.

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  • 31. 

    Vectorization leads to ______________

    • Rastering

    • Lossy compression

    • Lossless compression

    • Posterization

    Correct Answer
    A. Posterization
    Explanation
    Vectorization is the process of converting raster images into vector graphics, which are composed of mathematical equations and geometric shapes. Posterization, on the other hand, is a technique used to reduce the number of colors in an image, resulting in a simplified and stylized appearance. Therefore, vectorization does not lead to rastering, lossy compression, or lossless compression, but it can potentially lead to posterization.

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  • 32. 

    If you were a video editor, you would most likely use ________

    • JPG

    • GIF

    • TIFF

    • TGA

    Correct Answer
    A. TGA
    Explanation
    If you were a video editor, you would most likely use TGA. TGA (Targa) is a file format commonly used in video editing because it supports high-quality images with a large color depth. It is also compatible with transparency and alpha channels, making it suitable for compositing and layering in video editing software. Although JPG, GIF, and TIFF are also image file formats, TGA is preferred in video editing due to its specific features and capabilities.

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  • 33. 

    Which of the following are valid OSI layers?(you may check more than 1)

    • Application

    • Technical

    • Physical

    • Transport

    Correct Answer(s)
    A. Application
    A. Physical
    A. Transport
    Explanation
    The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a communication system into seven different layers. The layers are designed to work together to facilitate communication between devices.

    In this question, the valid OSI layers are Application, Physical, and Transport.

    The Application layer is responsible for providing services to the end-user, such as email, file transfer, and web browsing.

    The Physical layer deals with the physical transmission of data, including the electrical, mechanical, and functional aspects of the network.

    The Transport layer ensures reliable and efficient data transfer between devices by segmenting and reassembling data, as well as providing error detection and correction.

    Technical is not a valid OSI layer, so it is not included in the correct answer.

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  • 34. 

    A _____ stores full color compression schemes.

    • JPG

    • PNG

    • SVG

    • TIFF

    Correct Answer
    A. TIFF
    Explanation
    A TIFF (Tagged Image File Format) stores full color compression schemes. TIFF is a widely used file format for storing high-quality images and supports various compression schemes to reduce file size without significant loss of image quality. Unlike JPG, PNG, and SVG which are more commonly used for specific purposes like web graphics or vector images, TIFF is preferred for storing full color images with high fidelity and detail.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 13, 2008
    Quiz Created by
    Thedoubtfire

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