Data compression which guarantees that all original data can be restored exactly A. Lossless compression B. Lossy compression C. File compression D. Raster compression

Data compression which guarantees that all original data can be restored  exactly
A. Lossless compression
B. Lossy compression
C. File compression
D. Raster compression
by

1 Answer

Answer :

B. Lossy compression
by

Related questions

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. images will look exactly the same. C. Files can be decompressed back to their original uncompressed form. D. File sizes are usually significantly smaller.

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.

What type of compression actually deletes data and cannot be decompressed? A. File Compression B. Lossless Compression C. Lossy Compression D. Archive 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

Lossy or lossless? This type of compression makes the file smaller A. Lossy B. Lossless

Description : Lossy or lossless? This type of compression makes the file smaller A. Lossy B. Lossless

Last Answer : A. Lossy

Dennis has saved a photograph and has lost data during compression. What type of compression has occurred? A. LOSSY B. LOSSLESS C. RESOLUTION D. COLOR MODE

Description : Dennis has saved a photograph and has lost data during compression. What type of compression has occurred? A. LOSSY B. LOSSLESS C. RESOLUTION D. COLOR MODE

Last Answer : A. LOSSY

Lossy or lossless? This type of compression does not get rid of any data A. Lossy B. Lossless

Description : Lossy or lossless? This type of compression does not get rid of any data A. Lossy B. Lossless

Last Answer : B. Lossless

Huffman coding is an encoding algorithm used for A. lossless data compression B. files greater than 1 Mbit C. broadband systems D. lossy data compression

Description : Huffman coding is an encoding algorithm used for A. lossless data compression B. files greater than 1 Mbit C. broadband systems D. lossy data compression

Last Answer : A. lossless data compression

Huffman coding is an encoding algorithm used for a. lossless data compression b. files greater than 1 Mbit c. broadband systems d. lossy data compression

Description : Huffman coding is an encoding algorithm used for a. lossless data compression b. files greater than 1 Mbit c. broadband systems d. lossy data compression

Last Answer : a. lossless data compression

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 only be used for certain types of data. C. Data compression techniques cannot be applied to files being transmitted over the Internet. D. Lossy data compression should be used if there may be a need to recover all of the original data from the compressed file.

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.

To save file space lossy compression... A. Temporarily removes data B. Permanently removes data

Description : To save file space lossy compression... A. Temporarily removes data B. Permanently removes data

Last Answer : A. Temporarily removes data

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

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

Represents one dot that is illuminated on a computer screen, many of which make up images A. Graphics B. Lossless C. Lossy D. Pixels

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

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

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

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

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

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 perceive. C. By grouping files into a single folder, thus reducing the amount of storage needed. D. By replacing blocks of data with more compact representations.

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.

What is the reason that in the beginning of encoded file there is data telling which digit/letter represents which word ? a) It is needed to convert the file in compression form b) it is needed to convert the file in encoded form c) it is needed to convert the file in its original uncompressed form d) it is needed to convert the file in graphical form

Description : What is the reason that in the beginning of encoded file there is data telling which digit/letter represents which word ? a) It is needed to convert the file in compression form b) it is ... convert the file in its original uncompressed form d) it is needed to convert the file in graphical form

Last Answer : c) it is needed to convert the file in its original uncompressed form

Performance measure for Lossless Compression is __________: A. Distortion B. Fidelity C. Quality D. Rate

Description : Performance measure for Lossless Compression is __________: A. Distortion B. Fidelity C. Quality D. Rate

Last Answer : D. Rate

The reconstruction of a ________constructed sequence is identical to the original sequence. a. losslessly b. lossy c. Predictive d. None of the above

Description : The reconstruction of a ________constructed sequence is identical to the original sequence. a. losslessly b. lossy c. Predictive d. None of the above

Last Answer : a. losslessly

A particular way of coding information for storage in a computer file A. Raster graphic B. Vector graphic C. File format D. Layer

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

The difference between the original and reconstructed data, which we will refer to as the ______in the reconstructed data. a. Redundancy b. Compression c. loss d. Distortion

Description : The difference between the original and reconstructed data, which we will refer to as the ______in the reconstructed data. a. Redundancy b. Compression c. loss d. Distortion

Last Answer : d. Distortion

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

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

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 less likely to become corrupted when being transferred via email. C. He won't need to. All email providers let you send any files you like, regardless of size. D. Email services often have maximum file sizes that prevent you sending files that are too large.

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.

The purpose of data compression is to decrease file sizes . A. True B. False

Description : The purpose of data compression is to decrease file sizes . A. True B. False

Last Answer : A. True

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

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

From the following for which process ‘Archive Manager tool ‘ is used ? a) For transferring the data of file and directory b) For place compression on the file and directory c) For altering the form of file and directory d) For data compression on file and directory

Description : From the following for which process ‘Archive Manager tool ‘ is used ? a) For transferring the data of file and directory b) For place compression on the file and directory c) For altering the form of file and directory d) For data compression on file and directory

Last Answer : d) For data compression on file and directory

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

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

What is the difference between a lossy and a lossless file extension?

Description : What is the difference between a lossy and a lossless file extension?

Last Answer : In a general sense, the lossy will loose something each time you save it wheras the lossless will not. This might clear it up

Which file in java uses zip compression? a) JAR b) JER c) ZAR

Description : Which file in java uses zip compression? a) JAR b) JER c) ZAR

Last Answer : a) JAR

In the encoded file, by using which process it can be transformed into original file at any time ? a) Straight b) Reverse c) Transfer d) Compressed

Description : In the encoded file, by using which process it can be transformed into original file at any time ? a) Straight b) Reverse c) Transfer d) Compressed

Last Answer : b) Reverse

Which of these terms is a type of data compression? A. resolution B. zipping C. Inputting D. caching

Description : Which of these terms is a type of data compression? A. resolution B. zipping C. Inputting D. caching

Last Answer : B. zipping

Compression in general makes it _______ to send, upload and stream data A. Quicker B. Slower

Description : Compression in general makes it _______ to send, upload and stream data A. Quicker B. Slower

Last Answer : A. Quicker

In data compression technique, each word is represented by what ? a) Digit b) Letter c) a or b d) Picture

Description : In data compression technique, each word is represented by what ? a) Digit b) Letter c) a or b d) Picture

Last Answer : c) a or b

Which technique identify and eliminate less important information to conserve space ? a) Data compression b) Data repetition c) Data extension d) Data conservation

Description : Which technique identify and eliminate less important information to conserve space ? a) Data compression b) Data repetition c) Data extension d) Data conservation

Last Answer : a) Data compression

What process is done by the data compression while encoding the data ? a) Identifying repetition in the data b) Reducing repetition in the data c) Eliminating repetition in the data d) All of these

Description : What process is done by the data compression while encoding the data ? a) Identifying repetition in the data b) Reducing repetition in the data c) Eliminating repetition in the data d) All of these

Last Answer : d) All of these

By using data compression technique, what can be done in the data storage place of memory and disk ? a) increment b) Reduction c) Transfer d) Repetition

Description : By using data compression technique, what can be done in the data storage place of memory and disk ? a) increment b) Reduction c) Transfer d) Repetition

Last Answer : b) Reduction

The techniques for reducing the storage requirement of computer files and directory structure are known by which name ? a) Data compression b) Data storage place c) Data form d) Data transfer

Description : The techniques for reducing the storage requirement of computer files and directory structure are known by which name ? a) Data compression b) Data storage place c) Data form d) Data transfer

Last Answer : a) Data compression

Compression method use for Integer type data a. Huffman b. LZ77 c. Golomb Code d. Adaptive Huffman

Description : Compression method use for Integer type data a. Huffman b. LZ77 c. Golomb Code d. Adaptive Huffman

Last Answer : c. Golomb Code

If the loss tangent is very less, then the material will be a a) Conductor b) Lossless dielectric c) Lossy dielectric d) Insulator

Description : If the loss tangent is very less, then the material will be a a) Conductor b) Lossless dielectric c) Lossy dielectric d) Insulator

Last Answer : b) Lossless dielectric

Where in the encoded file, one can have the data that tells which digit/letter represents which word ? a) Beginning b) Middle c) Ending d) None of these

Description : Where in the encoded file, one can have the data that tells which digit/letter represents which word ? a) Beginning b) Middle c) Ending d) None of these

Last Answer : a) Beginning

A wave in which the wave’s medium is compressed in the same direction as the movement of the wave A. Transversal wave B. Transverse wave C. Frequency wave D. compression wave

Description : A wave in which the wave’s medium is compressed in the same direction as the movement of the wave A. Transversal wave B. Transverse wave C. Frequency wave D. compression wave

Last Answer : C. Frequency wave

A wave in which the movement of the wave’s medium is perpendicular to the movement of the wave traveling through the medium A. Transverse waves B. Compression waves C. Nodular Waves D. Ocean Waves

Description : A wave in which the movement of the wave’s medium is perpendicular to the movement of the wave traveling through the medium A. Transverse waves B. Compression waves C. Nodular Waves D. Ocean Waves

Last Answer : A. Transverse waves

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

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

The best visual compression quality is achieved using A. DCT B. Wavelets C. Dolby D. Fourier transform

Description : The best visual compression quality is achieved using A. DCT B. Wavelets C. Dolby D. Fourier transform

Last Answer : B. Wavelets

Without losing quality, JPEG-2000 can achieve compression ratios of A. 20:1 B. 2000:1 C. 2:1 D. 200:1

Description : Without losing quality, JPEG-2000 can achieve compression ratios of A. 20:1 B. 2000:1 C. 2:1 D. 200:1

Last Answer : D. 200:1

Run length encoding is a compression method in which repeated ______ of a symbol are replaced. a. Residual b. Occurrence c. Letters d. None

Description : Run length encoding is a compression method in which repeated ______ of a symbol are replaced. a. Residual b. Occurrence c. Letters d. None

Last Answer : b. Occurrence

The design of the _____has a significant impact on the amount of compression. a. Cluster b. Quantizer c. Codebook d. Both (b) and (a)

Description : The design of the _____has a significant impact on the amount of compression. a. Cluster b. Quantizer c. Codebook d. Both (b) and (a)

Last Answer : b. Quantizer

We can improve the amount of _______by accepting a certain degree of loss during the compression process. a. Compression b. Decompression

Description : We can improve the amount of _______by accepting a certain degree of loss during the compression process. a. Compression b. Decompression

Last Answer : a. Compression

Sliding windowing technique is used in which dictionary compression a. LZW b. LZ77 c. LZ78 d. Diagram coding

Description : Sliding windowing technique is used in which dictionary compression a. LZW b. LZ77 c. LZ78 d. Diagram coding

Last Answer : b. LZ77

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

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