Digital Media Questions
Which of the following image file format uses lossy compression? -JPEG -PNG -PSD -TIFF
JPEG
Which of the following is not correct -RGB and CMYK color space encompass all the colors human can see -color gamuts refer to the range of color of a specific system or device can produce or capture -some of the colors that monitors can reproduce cannot be reproduced by inkjet printers -monitors and inkjets printers cannot reproduce all the colors that human can see -some of the colors that inkjet printers can reproduce cannot be reproduced by monitors
RGB and CMYK color space encompass all the colors human can see
Which of the following is not correct? -RGB and CMYK color space encompass all the colors human can see -color gamuts refer to the range of colors of a specific system or device can produce or capture -some of the colors that monitors can be reproduced cannot be reproduced by inkjet printers -monitors and inkjet printers cannot reproduce all the colors that human can see -some of the colors that inkjet printers can reproduce cannot be reproduced by monitors
RGB and CMYK color space encompass all the colors human can see
The frequency at which information is sampled can affect: -the quality of the resulting data file -the size of the resulting data file -the format of the resulting data file -a and b only
a and b only
What of the following images is better saved in JPEG -a picture taken by a camera -a cartoon image drawn by an artist -a logo designed for a company -a poster that contains only a few colors
a picture taken by a camera
Which of the following images is better saved with a bit depth of 24 -a picture taken by a camera -a cartoon image drawn by an artist -a logo designed for a company -a poster that contains only a few colors
a picture taken by a camera
What is the order of performing noise reduction given the following operations? a) select the segment of the audio you want to apply noise reduction to b) select a segment that contains pure noise c) have the program perform a statistical analysis of the noise to generate a profile d) have the program reduce the noise of the selected segment based on the noise profile -b-c-a-d -b-a-c-d -a-c-b-d -c-b-d-a a-c-d-b
a-c-ad
The ____ effect lets you create a feel of being in a big auditorium -revert -normalize -noise reduction -envelope -amplify
amplify
Music is digitized by a two step process. Sampling and Quantization. In quantization, -discrete music data is turned into continuous data -the sampling rate id double -the amplitude values are converted to hertz -amplitude values from each sample are mapped to the nearest value on a scale of discrete levels
amplitude values from each sample are mapped to the nearest value on a scale of discrete levels
In the quantization step, to capture an analog image to a digital image, _____ -a 2-dimensional grid is applied on the image and each tiny cell on the grid is converted into a pixel -a 2-dimensional grid is applied on the image to apply dithering to the image -an infinite number of color shades and tones in an analog image is mapped to a set of discrete color values -the resulting digital image file is compressed to have a smaller file size
an infinite number of color shades and tones in an analog image is mapped to a set of discrete color values
Data will be lost or altered when you apply these strategies, except -reduce sampling rate -reduce bit depth -apply lossy compression -apply encryption
apply encryption
In general, if you want to keep a digital media file for further editing, you should _____. -avoid applying lossy compression -avoid applying lossless compression -avoid applying encryption -avoid making copies
avoid applying lossy compression
Increasing the bit depth from 8-bit to 16-bit will _____ the file size. (assuming all other things being equal and no file compression) -triple -quadruple -double -no effect
double
Increasing the sampling rate from 22.5 KHz to 44.1 KHz will _____ file size. (assuming all other tings being equal and no file compression) -triple -quadruple -double -not effect
double
The main advantage(s) of bitmapped images over vector graphics is(are) -scalability or resolution independence of images -ease of editing the image content pixel by pixel -more compact file size compared to vector graphics -a and c
ease of editing the image content pixel by pixel
Which of the following is not one of the main advantages of vector graphics over bitmapped images -scalability -ease of editing the image content pixel by pixel -more compact file size -resolution independence
ease of editing the image content pixel by pixel
Which of the following is not one of the main advantages of vector graphics over bitmapped images? -scalability -ease of editing the image content pixel by pixel -more compact file size -resolution independence
ease of editing the image content pixel by pixel
The fade in and fade out effects can be created by applying the ____ effect -amplify -envelope -noise reduction -normalize -reverb
envelope
A sound with higher ____ is perceived to have a higher pitch -decibels -fidelity -frequency -sampling rate -bit depth
frequency
In a sound pressure wave the _____ of a wave refers to the number of complete back-and-forth cycles of vibrational motion of the medium particles per unit of time -decibels -waveform -frequency -hertz
frequency
Which of these strategies does not actually change the quality of the media file -lossy compression -jpeg compression -lossless compression
lossless compression
Which of these strategies does not actually change the quality of the media file? -lossy compression -jpeg compression -lossless compression
lossless compression
Vector graphics are composed of... -individual pixels which represent spatial samples of the image or scene -mathematical descriptions of image elements which include points, lines, curves, and figures
mathematical descriptions of image elements which include points, lines, curves, and figures
Vector graphics are composed of... -individual pixels which represent spatial samples of the image or scene -mathematical descriptions of image elements which include points, lines, curves, and figures
mathematical descriptions of image elements which include points, lines, curves, and figures
One of the main advantages to working with audio on separate tracks is -multiple audio tracks allow you to quickly reduce file size -multiple audio tracks present all audio segments in a single waveform -multiple audio tracks cannot be combined or mixed-down -multiple audio tracks allow you to apply filters and effects to audio segments independent to one another -all of the above
multiple audio tracks allow you to apply filters and effects to audio segments independent to one another
Eight bits equals -one byte -one megabyte -one gigabyte -one bit
one byte
A pixel is short for... -pixars per inch -pixel elements -picture element -picture of elephants
picture element
A pixel is short for.... -pixars per inch -pixel elements -picture elements -picture of elephants
picture elements
About MIDI, which of the following is wrong -not sampled audio -contains instructions for recreating the music -created by editing music notations and instruments assignments -can also be created by recording your performance on a MIDI keyboard connected to a computer -playback of a MIDI on MIDI file on any computer with a sound card produces the same sound
playback of a MIDI file on MIDI file on any computer with a sound card produces the same sound
In which of the following uses of audio that the smaller file size is generally a more crucial consideration -video -multimedia authoring -playback on the web -audio CD -podcast
playback on the web
The reduction of of a digital audio file size cannot be achieved by _____ -reducing the sampling rate -reducing the pitch of the audio -reducing the bit depth -applying file compression techniques
reducing the pitch of the audio
Complete this sentence. A pixel... -represents a sample of information in an image -is always 1 bit -is always 8 bits -none of the above
represents a sample of information in an image
Which of the following is true -when a digital image is printed, each image pixel is represented by one printer ink dot -resampling an image will have negative impact on the image quality -print resolution and printer resolution are the same -print resolution have an impact on the image quality when printed
resampling an image will have negative impact on the image quality
Which of the following effects would not let you change the audio amplitude -amplify -envelope -normalize -reverb -fade in
reverb
In order for continuous or analog data to be digitized the following process used -quartering -measuring -duplication -sampling
sampling
The effect seen in this image is caused by... -too many levels of quantization (i.e. higher bit depth, more colors) -sampling at too high of frequency -too few levels of quantization (i.e. lower bit depth, fewer colors) -Sampling at too low of a frequency (too few samples)
sampling at too low of a frequency (too few samples)
When analog information is converted to digital data, we must consider two properties that affect the exactness of the digital representation, one from sampling and one from quantizing. Which of the following is from sampling? -sampling rate -bit depth
sampling rate
Which of the following is not a consequence of image quantization? -the number of allowed colors in the image is reduced -loss of the image fidelity and details -the details that rely on the subtle color differences are lost during quantization -sampling rate is reduced
sampling rate is reduced
Which or the following is not a consequence of image quantization -the number of allowed colors in the image is reduced -loss of the image fidelity and details -the details that rely on the subtle color differences are lost during quantization -sampling rate is reduced
sampling rate is reduced
Given here are the general steps of image retouching of a scanned image. Which step one should be done at last? a) remove color casts b) adjust the overall contrast or tonal range of the image c) crop and straighten the image d) sharpen the image e) repair small imperfections f) fine-tune specific parts of the image
sharpen the image
What provides a graphical view of characteristics of a changing sound and identify syllables of speech, rhythm of music, quiet, and loud passages, etc -waveforms -frequency -bar graph -sampling
waveforms
Our everyday decimal numbering system is base -5 -2 -10 -1
10
Convert the 3 into decimal to binary -3 -10 -1100 -11
11
If we consider human ear's most sensitive range to frequency (2,000 hz to 5,000 hz), then what is the lowest sampling rate may be used that still satisfies the Nyquist Theorem -11,025 hz AM radio quality/speech -22,050 Hz near FM radio quality -44,100 hz DAT (digital audio tape) quality -96,000 hz DVD-Audio Quality
11,025 hz AM Radio quality/speech
What is the binary number for decimal value 55? -110111 -101011 -100111 -110011
110111
What is the decimal value of the binary number 1101 -11 -1101 -13 -111
13
What is the decimal value of the binary number 1101? -11 -1101 -13 -111
13
You have a digitally sampled audio file that was sampled at 32,000 samples per second. What is the highest frequency that this sampled file can faithfully represent -16,000 -32,000 -64,000 -1024
16,000
Which of the following sizes is the largest? -1,000MB -100GB -10,000KB -1TB
1TB
Computer use binary number system which is base -5 -2 -10 -1
2
For an average person, the highest pitch he/she can hear is -20 hz -200 hz -2,000 hz -20,000 hz -200,000 hz
20,000 hz
Most gray-scale images use 8 bit color color. This means there can be ____ possible different gray tones in the image. -3 -8 -100 -256 -1024
256
Most gray-scale images use 8-bit color. This means there can be _____ possible different gray tones in the image. -3 -8 -100 -256 -1024
256
If you want to encode only 8 colors, what is the minimum number of bit(s) you need? -2 -3 -8 -16 -256
3
If you want to encode only 8 colors, what is the minimum number of bit(s) you need? -2 -3 -8 -16 -256
3
A picture has 8M pixels. If each pixels needs 4 bytes, how big is the file size to save the picture without applying compression -4MB -8MB -16MB -32MB -64MB
32MB
Without applying any compression, what would be the file size for an image of 4000 x 3000 pixels in 24-bit color depth? Choose the closest one. -12MB -18MB -24MB -36MB -48MB
36MB
If a waveform has 1000 cycles in 2.5 seconds, the frequency for this waveform is -100 -400 -800 -1000 -250
400
If the sound to be digitized has frequency in this range (1000-2000) hz, what will be the minimum sampling rate according to the sampling theorem -44,1000 hz -4000 -2000 -8000
4000
When digitizing audio for CD quality sound the generally accepted sampled rate is -11,025 hz -22,050 hz -44,100hz -96,000 hz
44,100 hz
For an image of 1600 x 800 pixels, when printed with printed resolution 200ppi, how be is the resulted print -8" x 4" -16" x 8" -10" x 8" -5" x 4" -11" x 7"
8" x 4"
Suppose the you scan a 2" x 1" picture in at a resolution of 400 dpi. What are the pixel dimensions of the scanned image? -600 x 300 -800 x 400 -200 x 100 -400 x 200 -500 x 300
800 x 400
To make an 8" x 5" print with 100 ppi print resolution, what should the image dimension be -400 x 200 -800 x 500 -800 x 400 -600 x 300 -600 x 200
800 x 500
Digital data is _____ and analog information is ______ -continuous; discrete -discrete; continuous -continuous; continuous -discrete; discrete
discrete; continuous
Which of the following is the red color in RGB model? -(0,0,0) -(255,0,0) -(0,255,0) -(0,0,255) -(255,255,255)
(255,0,0)
In most digital video editing programs, _____ has video and audio tracks, and it is where you can arrange and compose your raw footages in sequence? -asset list window -effects and transitions window -preview window -time line window
-time line window
Which of the following images formats is not good for web application -JPEG -GIF -BMP -PNG
BMP
Which is not the consequences of higher image resolution? -more samples -bigger file size -bigger bit depth -more image details -none of the above
bigger bit depth
The smallest unit in a binary system is a _____ -bit -byte -KB -MB -GB
bit
In digital audio, higher resolution means higher _____ -amplitude -frequency -sampling rate -bit depth -dynamic range
bit depth
The number of values that can be represented as a result of quantizing information is know as the -binary digit -sampling rate -bit depth -resolution
bit depth
The number of values that can be represented as a result of quantizing information is know as the -binary digit -sampling rate -bit depth -resolution
bit depth
When analog is converted to digital data, two properties affect the exactness of the digital representation, one for sampling and one for quantizing. Which of the following is a result of quantization? -sampling rate -bit depth
bit depth
Which of the following will increase the file size of a digital image -larger pixel dimensions (resolution) -higher color depth -neither a nor b -both a and b
both a and b
What affects the file size of a bitmap image -both height and width in pixel resolution -contents of the image (what is in the image) -its width alone -its height alone
both height and width in pixel resolution
What affects the file size of a bitmap image? -both height and width in pixel resolution -contents of the image (what is in the image) -its width alone -its height alone
both height and width in pixel resolution
A digital image captured at a higher resolution _______ -captures more details than the same image stored at a lower resolution -represents more colors than the same image stored at a lower resolution -has a greater bit depth than the same image stored at a lower resolution -has a smaller file size than the same image stored at a lower resolution
captures more details than the same image stored at a lower resolution
Rassterization means... -converting vector graphics into pixel based images -converting pixel based images into vector graphics -converting regions into lines -converting lines into regions
converting vector graphics into pixel based images
Rasterization means... -converting vector graphics into pixel-based images -converting pixel-base images into vector graphics -converting regions into lines -converting lines into regions
converting vector graphics into pixel-based images
The term digital is used to describe: -data that has been encrypted for security purposes -data that is stored in a format of ones and zeros -data that is stored in a any format -data that is stored on cassette tapes
data that is stored in a format of ones and zeros
sound intensity is often measured in -decibels -waveforms -frequency -hertz
decibels
Which of the following can reduce file size of digital media -decrease sampling rate -save the data in flash drive -increase bit depth -apply encryption
decrease sampling rate
Digital data is _____ and analog information is _____ -continuous; discrete -discrete; continuous -continuous; continuous -discrete; discrete
discrete; continuous
Which of the following is not correct -both the pixel dimensions of an image and the print resolution (ppi) affect the image's print size -given a fixed print size, you need larger pixel dimensions when a higher print ppi is chosen -given a fixed dimension, you get a smaller print when a higher print ppi is chosen -given a fixed print ppi, you need larger pixel dimensions when a smaller print size is chosen
given a fixed print ppi, you need larger pixel dimensions when a smaller print size is chosen
The common unit for frequency is ______ where the unit of time is one second -decibels -waveform -frequency -hertz
hertz
What is the disadvantage of MIDI compared music with loop music -How exactly the playback of the MIDI music sounds depends on the sound card that play it -MIDI is too complicated -MIDI files always have bigger file size -MIDI is not widely supported
how exactly the playback of the MIDI music sounds depends on the sound card that play it
Increasing the bit depth typically has which effect on the size of a file? -reduces file size -increases file size -neither a nor b
increases file size
Bitmapped images are composed of -individual pixels which represent spatial samples of the image or scene -mathematical descriptions of image elements which include points, lines, curves, and figures
individual pixels which represent spatial samples of the image or scene
Bitmapped images are composed of -individual pixels which represent spatial samples of the image or scene -mathematical descriptions of image elements which include points, lines, curves, and figures
individual pixels which represent spatial samples of the image or scene
If a digital image has a higher bit depth, ______ than it would have been at a lower bit depth -it has larger pixel dimensions -it has more different colors -a higher sampling rate is used -it has larger image resolution
it has more different colors
If a digital image has a higher bit depth, _______ than it would have been at a lower bit depth. -it has larger pixel dimensions -it has more different colors -a higher sampling rate is used -it has larger image resolution
it has more different colors
About 0 dB, which one of the following is wrong -it means the hreshold of hearing -it means zero sound intensity -it does not mean absence of sound wave -there exists a sound that has lower decibels that 0 dB
it means zero sound intensity
Which of the following is wrong -sampling rate and sound frequency as the same unit, both use hz -sampling rate is a setting that can be changed in the digitization process -sound frequency is a setting that can be changed in the digitization process -Higher sampling rate does not necessary mean higher pitch
sound frequency is a setting that can be changed in the digitization process
The x-axis in a image histogram represents: -the color values in the image -the number of pixels showing certain colors -the time intervals at which image was sampled -none of the above
the color values in the image
The number of pixels in x direction that a flatbed scanner can produce is determined by -the size of the scanned image -the number of sensors the scanner has -the size of the flat bed of the scanner
the number of sensors the scanner has
Which of the following is NOT correct if more samplings are taken from a sound wave, -the reconstructed wave looks closer to the original wave -the process has a higher sampling rate -the sound has a higher frequency -none of the above
the sound has a higher frequency
The horizontal axis of a waveform is _____ -distance -time -height -amplitude
time
Data compression which cannot by exactly reversed, so that the decompression operation restores only an approximation to the original data is known as lossy compression -true -false
true
Sound is an analog phenomenon -true or false
true
According to Nyquist's theorem, to be to reconstruct the sound wave satisfactorily the sampling rate of the audio must be at least _____ audio frequency -ten times -three times -equal to -twice
twice
