You acquire a network vulnerability scanning tool and try it out on a network address segment belonging to people at your university or business. the scanner identifies one computer named princehal that has many serious vulnerabilities. you deduce to whom the machine belongs. explain the ethical implications of (a) telling the owner what you have found, (b) telling your local administrator or security officer what you have found, (c) exploiting one of the relatively minor vulnerabilities to show the owner how serious the exposure is, (d) exploiting a relatively minor vulnerability as a prank without telling the owner, (e) telling the owner what you have found and then demanding money for details on the vulnerabilities, (f) using one of the vulnerabilities to acquire control of the machine, downloading and installing patches and changing settings to address all the vulnerabilities, and never telling anyone what you have done.

What do the principles of notice, choice, onward transfer, and access closely apply to? a. privacyb. identificationc. retentiond. classification

State the parts of a variable declaration?

Consider a slotted aloha system, where the time slot equals the fixed duration of each packet. assume that there are 4 stations a, b,c, d sharing the medium. (a) stations a, b,c, d receive one packet each from higher layers at times 1.3, 1.5, 2.6,5.7 respectively. show which transmissions take place when, according to the slottedaloha protocol; describe all transmissions until all four packets have been successful. when needed, each station has access to the following sequence of random number, provided by a random number generator and drawn uniformly between 0 and 1: (1) station a draws numbers: 0.31, 0.27, 0.78, 0.9, 0.9, 0.11, 0. (2) station b draws numbers: 0.45, 0.28, 0.11, 0.83, 0.37, 0.22, 0. (3)station c draws numbers: 0.1, 0.2, 0.3, 0.4, 0. (4) station d draws numbers: 0.36, 0.77, 0.9, 0.1, 0.1, 0.1, 0.1, 0. (b) in slotted aloha, a station transmits in each time slot with a given probability. what probabilities would you assign to each of the four stations so as to: (i) maximize the efficiency of the protocol? (ii) maximize fairness among the four stations? (c) will the efficiency increase or decrease if we modify slotted aloha as follows: (i) get rid of slots and allow stations to transmit immediately? (ii) implement carrier sensing? (iii) implement collision detection? (iv) implement collision avoidance?