Two users A and B have the following privileges: A can read and write a file f, and read, write, and execute a service program p. B can only read f and execute p. An intruder has managed to perform one of the violations: Guess A's password. Guess B's password. Place a passive wiretap on A's terminal line and intercept all data communication, except for the password, which is protected through encryption. Place an active wiretap on A's terminal line, which allows the interception of all communication, expect the password, but also allows insertion of arbitrary new messages into the communication stream. (a) For each of the 4 cases, describe a simple scenario, if one exists, that would lead to each of the following violations: Information disclosure.

Which two technologies support the building of single-page applications?

Which spreadsheet operation does a look function perform?

5.a fishing rod is formed from a composite material of 0.5 kg of glass fibers embedded in a matrix of 0.5 kg of epoxy resin. the glass fibers are assumed to be long, continuous and unidirectional. to achieve a greater stiffness it is proposed to use a different composite that is comprised of long continuous carbon fibers that will be embedded in a matrix of 0.5 kg of epoxy resin. if the modulus of elasticity of the carbon fiber composite is 10% greater than the elastic modulus of the glass fiber composite, estimate the mass of carbon fibers that will be used to make the carbon fiber composite. assume the applied tensile stress is parallel to the direction of the long axis of the fibers. the epoxy resin, glass fiber, and carbon fiber have an elastic modulus of 5, 86, and 350 gpa respectively and a density of 1100, 2500, and 1800 respectively.