Javier is asked to explain to IT management as to why he is suggesting replacing the existing company firewall. Javier states that many external attackers are using forged internet addresses against the firewall and is concerned that this technique is highly effective against the existing firewall. What type of firewall Javier would have deployed

Some of the first computer games were created in the early 1970s by college students experimenting after hours to see what the were capable of doing.

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.