QUES: Denial of service attacks are designed to make a machine or network resource unavailable to its intended users. Attackers can deny service to individual victims, such as by deliberately entering a wrong password enough consecutive times to cause the victim account to be locked, or they may overload the capabilities of a machine or network and block all users at once. While a network attack from a single IP address can be blocked by adding a new firewall rule, many forms of Distributed denial of service (DDoS) attacks are possible, where the attack comes from a large number of points and defending is much more difficult. Such attacks can originate from the zombie computers of a botnet, but a range of other techniques are possible including reflection and amplification attacks, where innocent systems are fooled into sending traffic to the victim.

How can a network attack from a single IP address be blocked?
What is the answer?
ANS: by adding a new firewall rule
QUES: Tucson is known for being a trailblazer in voluntary partial publicly financed campaigns. Since 1985, both mayoral and council candidates have been eligible to receive matching public funds from the city. To become eligible, council candidates must receive 200 donations of $10 or more (300 for a mayoral candidate). Candidates must then agree to spending limits equal to 33 for every registered Tucson voter, or $79,222 in 2005 (the corresponding figures for mayor are 64 per registered voter, or $142,271 in 2003). In return, candidates receive matching funds from the city at a 1:1 ratio of public money to private donations. The only other limitation is that candidates may not exceed 75% of the limit by the date of the primary. Many cities, such as San Francisco and New York City, have copied this system, albeit with more complex spending and matching formulas.

How many $10+ donations must Tucson city council candidates receive to get public funding?
What is the answer?
ANS: 200
QUES: In terms of casting and production itself, Spielberg has a known penchant for working with actors and production members from his previous films. For instance, he has cast Richard Dreyfuss in several films: Jaws, Close Encounters of the Third Kind, and Always. Aside from his role as Indiana Jones, Spielberg also cast Harrison Ford as a headteacher in E.T. the Extra-Terrestrial (though the scene was ultimately cut). Although Spielberg directed veteran voice actor Frank Welker only once (in Raiders of the Lost Ark, for which he voiced many of the animals), Welker has lent his voice in a number of productions Spielberg has executive produced from Gremlins to its sequel Gremlins 2: The New Batch, as well as The Land Before Time, Who Framed Roger Rabbit, and television shows such as Tiny Toons, Animaniacs, and SeaQuest DSV. Spielberg has used Tom Hanks on several occasions and has cast him in Saving Private Ryan, Catch Me If You Can, The Terminal, and Bridge of Spies. Spielberg has collaborated with Tom Cruise twice on Minority Report and War of the Worlds, and cast Shia LaBeouf in five films: Transformers, Eagle Eye, Indiana Jones and the Kingdom of the Crystal Skull, Transformers: Revenge of the Fallen, and Transformers: Dark of the Moon.

Who was Ford going to play in E.T., until the scene was removed?
What is the answer?
ANS:
a headteacher