Interesting Facts about Work. 1  Work is a scalar quantity, not a vector quantity. 2  Another unit of work is the foot-pound. 3  The joule is also used as the standard unit of measure for energy. 4  Negative work is when force acting on an object hinders the object's displacement.
(Ä«-pÄ spoofÂ´ing) (n.) A technique used to gain unauthorized access to computers, whereby the intruder sends messages to a computer with an IP address indicating that the message is coming from a trusted host.
It is also called session hijacking. Session hijacking is a security attack, carried out by an intruder, which attempts to insert commands into an active login session. The most common method of session hijacking is IP spoofing. In an IP spoofing, attacker uses source-routed IP packets that inserts commands into an active transmission between two nodes on a network.