The statement that Apache web server is the most widely used network operating system used on web servers is true. This server runs on <span>67% of all webservers in the world</span>
The Apache web server is a free and open-source cross-platform HTTP Server,<span> developed and maintained by </span>Apache Software Foundation.
A.Information on social networking sites can give most or all digits of a person’s social security number.
Answer:
The longest codeword that could possibly be for "n" symbol is n-1 bits.
Explanation:
From the given information:
Suppose we are to consider a set of frequencies
, for which f is a symbol for the length n. Therefore, the longest codeword that could possibly be for "n" symbol is n-1 bits.
However, during the encoding for "n" in conjunction with n-2, then the possibilities for n are; 
We can conclude that the longest codeword that could possibly be for "n" symbol is n-1 bits.