Answer: Safety effort of system is defines as the measures that are taken to provide and maintain the protection of the system.There are several methods ,tool and efforts made for the system security .Benefits of the system security are as follows:-
- Takes control over the hazardous situation and maintain the security
- System security will also increase the development of the system easily.
- Approach towards the analyzing of the system function
- Data, information and functions are safe from being detected in unauthorized way.
- Functions and implementation is made easy without the fear of getting attacked or hacked.
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.
Answer:
Option(c) is the correct answer to the given question .
Explanation:
The Project responsibilities section is responsible of the planning of project.
Following are the Roles of the Project Responsibilities
- To check the objective of the project goals.
- Works with customers and to define and meet client needs and the overall objective .
- Cost estimation and expenditure production of the project
- Ensure the fulfillment of the client .Analysis and enterprise risk management. and Tracking the progress of project.
All the others options are not responsible of the planning of project that's why Option(c) is the correct answer .
Pinhole cameras were one of the most sophisticated devices of the period, it made tasks much easier it basically worked exactly like the human eye and is something just like tracing.
