Description : colors of the pixels in a digital image are often represented by red, green, and blue values between 0 and 255 (an RGB triplet). A photographer is manipulating a digital image ... using on the digital image? A. Lossless transformation B. Lossy transformation C. Multiband transformation
Last Answer : A. Lossless transformation
Description : The binary code for each pixel is used to determine A. Which colour will be displayed B. How big the image is C. What shape the image is D. How many pixels will be in the image
Last Answer : A. Which colour will be displayed
Description : A bitmap image is made up of A. Pixels B. Colours C. Sounds D. Samples
Last Answer : A. Pixels
Description : Digital video is sequence of a. pixels b. matrix c. frames d. coordinates
Last Answer : c. frames
Description : Digital video is sequence of a. A. pixels b. B. matrix c. C. frames d. D. coordinates
Last Answer : c. C. frames
Description : The process of representing Infinite set of values with a much smaller set is called a. Mapping b. clustering c. Quantization d. Sampling
Last Answer : c. Quantization
Description : Represents one dot that is illuminated on a computer screen, many of which make up images A. Graphics B. Lossless C. Lossy D. Pixels
Last Answer : D. Pixels
Description : The standard unit of measurement for U.S. standard size papers. A. Inches B. Picas C. Points D. Pixels
Last Answer : A. Inches
Description : Anything on a page that is not actual text, from simple line drawings to fully active images found on the World Wide Web. A. Graphics B. Lossless C. Lossy D. Pixels
Last Answer : A. Graphics
Description : In facsimile transmission, a page is scanned and converted into a sequence of a. Binary sequence b. Ternary sequence c. black or white pixels d. alphanumeric sequence
Last Answer : c. black or white pixels
Description : Which of the following is a benefit of lossy compression over lossless? A. File sizes will always be reduced, even when compressed multiple times. B. File quality is not harmed, e.g. ... can be decompressed back to their original uncompressed form. D. File sizes are usually significantly smaller.
Last Answer : C. Files can be decompressed back to their original uncompressed form.
Description : Ms. Matthews is printing posters of her students' artwork. Since the images will be printed, they will need: A. a higher resolution for better print quality. B. a lower resolution for smaller ... a higher resolution to display on a monitor. D. a lower resolution in order to download faster.
Last Answer : A. a higher resolution for better print quality.
Description : A song is digitally recorded by an artist and saved to a file. Then, the artist runs a program that takes the file as input and produces a new file. The new file does not include any sound ... a smaller file size. D. This is a lossless transformation of data that results in a larger file size.
Last Answer : A. This is a lossy transformation of data that results in a smaller file size.
Description : Lossy or lossless? This type of compression makes the file smaller A. Lossy B. Lossless
Last Answer : A. Lossy
Description : Which of these is NOT a way to decrease image blurriness? A. Use compatible file formats B. Increase the size of thumbails C. Save images using loseless compression D. Check if raster or vector graphics work better
Last Answer : A. Use compatible file formats
Description : Data that describes other data. For example, a digital image may include metadata that describe the size of the image, number of colors, or resolution. A. Metadata B. Emdata C. Tridata D. Perameter
Last Answer : D. Perameter
Description : Information per source is called a. A. sampling b. B. quantization c. C. entropy d. D. normalization
Last Answer : c. C. entropy
Description : How does lossy compression reduce the size of files? A. Through removing redundancies by grouping repeated data together. B. By removing some precision in data that humans would have difficulty to ... the amount of storage needed. D. By replacing blocks of data with more compact representations.
Last Answer : D. By replacing blocks of data with more compact representations.
Description : The process of representing a large—possibly infinite—set of values with a much smaller set is called______________. A. Linear function Quantization B. PDF. C. CDF D. Quantization
Last Answer : D. Quantization
Description : An ________is encoded and the algorithm attempts to use the next smaller context. a. One length context b. Zero context c. Escape symbol d. None
Last Answer : c. Escape symbol
Description : SNR is: A. Signal to Noise Ratio B. Signal to Net Ratio C. Signal to Noise Rate D. None of above
Last Answer : A. Signal to Noise Ratio
Description : The bounded Quantization error is also called__________. A. overload error B. overload noise C. granular error D. All of above
Last Answer : C. granular error
Description : Popular measures of distortion is a. Squared error measure b. Absolute difference c. Noise d. Nats
Last Answer : a. Squared error measure
Description : The rate for a discrete source is simply the______. a. Entropy b. Loss c. Noise d. Distortion
Last Answer : a. Entropy
Description : The act of changing the background color of a publication on which the image displays does not make the image look different. A. Color Depth B. Compression C. Portability D. Transparency
Last Answer : D. Transparency
Description : An artist makes an RGB raster image in which each pixel color is encoded with 12-bits --- 4 bits each for red, green and blue.Which of the following correctly shows the hexadecimal value for Red as a 12-bit representation A. F00 B. 00F C. FF00 D. FF0000
Last Answer : D. FF0000
Description : A type of data used for graphics or pictures. A. Gyphs B. Numbers C. Text D. Image
Last Answer : A. Gyphs
Description : The number of dots of ink or toner per inch on a printed image. A. DPI B. RGB C. CMYK
Last Answer : B. RGB
Description : The amount of detail stored for an Image. A. Resolution B. PPI C. Print Resolution
Last Answer : A. Resolution
Description : The appearance of an image on a website is dependent upon? A. The DPI of the printer B. The SPI of the printer C. The PPI of the monitor D. The SPI of the monitor
Last Answer : C. The PPI of the monitor
Description : What is colour/bit depth of the image? A. 1 B. 2 C. 3 D. 4
Last Answer : A. 1
Description : An Image is Square array of 256X256 pixel requires 65536 bytes, and after compression it reduced to 16384 X8 bytes. What will be the compression rate: a. 2 b. 3 c. 4 d. 5
Last Answer : a. 2
Description : An Image is represented by 65536 X8 bits, and after compression it reduced to 16384 X8 bits. What will be the compression ratio: a. 55% b. 65% c. 75% d. 85%
Last Answer : c. 75%
Description : A particular way of coding information for storage in a computer file A. Raster graphic B. Vector graphic C. File format D. Layer
Last Answer : A. Raster graphic
Description : Data compression which guarantees that all original data can be restored exactly A. Lossless compression B. Lossy compression C. File compression D. Raster compression
Last Answer : B. Lossy compression
Description : What type of compression actually deletes data and cannot be decompressed? A. File Compression B. Lossless Compression C. Lossy Compression D. Archive Compression
Last Answer : D. Archive Compression
Description : Hamzah needs to email a large file to a classmate. Why might he need to use file compression to do so? A. Email services often only let you send compressed data files. B. Compressed files are ... . D. Email services often have maximum file sizes that prevent you sending files that are too large.
Last Answer : D. Email services often have maximum file sizes that prevent you sending files that are too large.
Description : To save file space lossy compression... A. Temporarily removes data B. Permanently removes data
Last Answer : A. Temporarily removes data
Description : Which of the following is a true statement about data compression? A. Data compression techniques can be used to reduce the size of a file for storage or transmission. B. Data compression techniques can ... used if there may be a need to recover all of the original data from the compressed file.
Last Answer : A. Data compression techniques can be used to reduce the size of a file for storage or transmission.
Description : Which formula shows how to work out the percentage a file has been compressed by? A. bits in (Huffman *7) /100 B. bits in ASCii - bits in Huffman C. difference in bits / bits in ASCII * 100
Last Answer : C. difference in bits / bits in ASCII * 100
Description : Which best describes Lossless Compression? A. No information is lost but file size is increased B. There is no loss in information at all after compression C. Files which have the exact same data after compression D. Compression that involves an algorithm
Last Answer : B. There is no loss in information at all after compression
Description : The purpose of data compression is to decrease file sizes . A. True B. False
Last Answer : A. True
Description : What is compression? A. To convert one file to another B. To reduce the size of data to save space C. To minimize the time taken for a file to be downloaded D. To compress something by pressing it very hard
Last Answer : B. To reduce the size of data to save space
Description : What is the full form of M3U ? a) MPEG user sound reference file b) MPEG Universal Sound reference file c) MPEG unified sound reference file d) MPEG URL sound reference file
Last Answer : d) MPEG URL sound reference file
Description : The list of playing media file is known as ________. a) medialist b) playlist c) masterlist d) filelist
Last Answer : b) playlist
Description : Which button can be used in the Archive manager toolbar, to create a compressed file into uncompressed ? a) Open button b) Home button c) Extract d) Up button
Last Answer : c) Extract
Description : What is done firstly, to create a compressed and archive file into uncompressed ? a) Left clicking a file -> Open with archive manager b) Right clicking a file -> open with archive manager c) Left clicking a file -> open with Winzip d) Right clicking a file -> open with winzip
Last Answer : b) Right clicking a file -> open with archive manager
Description : Which file in java uses zip compression? a) JAR b) JER c) ZAR
Last Answer : a) JAR
Description : Using gzip program an uncompressed file in the tar format is compressed in the zip format, by providing which extension ? a) tar b) tar.gz c) tar.gz d) zip
Last Answer : c) tar.gz
Description : From the following, which file format stores multiple files in a single Zip file ? a) zap b) zip c) zop d) zep
Last Answer : b) zip