LOLer was chatting online with l33ter. "I can't believe how lame some people are! :) I can get into any system by checking out the company website to see how user names are defined and who is on the employee directory. Then, all it takes is brute force to find the password." LOLer is a ___, and the fraud he is describing is ___.

The answers are "hacker and hacking"

Explanation:

LOLer is an security hacker who uses computer bugs and other exploits to break into a company or personal network system by using their personal ingenuity and other accesses. Thus the process he described of getting into the company server details and getting peoples IP addresses and details on the company involves security hacking of the company network.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.