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Alecsey [184]
3 years ago
7

"which key do you hold down to select a group of contiguous files"

Computers and Technology
1 answer:
zloy xaker [14]3 years ago
4 0
The "Ctrl" key is the answer.
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ossless compression tools generally use either Huffman coding or Lempel-Ziv-Welch (LZW) coding. Discuss the advantages and disad
anygoal [31]

Answer:

It we were asked to develop a new data compression tool, it is recommended to use Huffman coding since it is easy to implement and it is widely used.

Explanation:

The pros and the cons of Huffman coding

Huffman coding is one of the most simple compressing encoding schemes and can be implemented easily and efficiently. It also has the advantage of not being patented like other methods (e.g. arithmetic codingfor example) which however are superior to Huffman coding in terms of resulting code length.

One thing not mentioned so far shall not be kept secret however: to decode our 96 bit of “brief wit” the potential receiver of the bit sequence does need the codes for all letters! In fact he doesn’t even know which letters are encoded at all! Adding this information, which is also called the “Huffman table” might use up more space than the original uncompressed sentence!

However: for longer texts the savings outweigh the added Huffman table length. One can also agree on a Huffman table to use that isn’t optimized for the exact text to be transmitted but is good in general. In the English language for example the letters “e” and “t” occur most often while “q” and “z” make up the least part of an average text and one can agree on one Huffman table to use that on average produces a good (=short) result. Once agreed upon it doesn’t have to be transmitted with every encoded text again.

One last thing to remember is that Huffman coding is not restricted to letters and text: it can be used for just any symbols, numbers or “abstract things” that can be assigned a bit sequence to. As such Huffman coding plays an important role in other compression algorithms like JPG compression for photos and MP3 for audio files.

The pros and the cons of Lempel-Ziv-Welch

The size of files usually increases to a great extent when it includes lots of repetitive data or monochrome images. LZW compression is the best technique for reducing the size of files containing more repetitive data. LZW compression is fast and simple to apply. Since this is a lossless compression technique, none of the contents in the file are lost during or after compression. The decompression algorithm always follows the compression algorithm. LZW algorithm is efficient because it does not need to pass the string table to the decompression code. The table can be recreated as it was during compression, using the input stream as data. This avoids insertion of large string translation table with the compression data.

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0 540 100 200 350 400 550 600 750

Explanation:

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3 years ago
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These are statements given by witnesses under oath? A. Testimony B. Admissible Evidence C. Indirect Evidence D. Circumstantial E
Aneli [31]

Answer:A. Testimony

Explanation:when someone knows something about what happened in the case held in court or they had witnessed what happened; In order to actual testify on what they know they are called on the stand and they have to raise their hand as a sign to swear an oath before the can give their testimony in court.

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Identify at least two advantages and two disadvantages of using color to visually represent information.
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Color could be use as a advantage visually representing something ,For example its help identify whats being presented through color depending on the object also if helps reveal its characteristics. The disadvantages are using color to visually representing info could be deceiving and also color has to works efficiently with your other senses to be 100% correct . Hope this helps 
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