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Computer Security Exam September 2, 2014 First name: ________________________ Last name: ________________________ Matricola: ________________________ Signature: ________________________ Homeworks? [ ] (Y) [ ] (N) Total points: ________________________ __ Instructions ● The exam is composed of 12 pages. ● Just as a cross check, tell us whether you have completed the homeworks, by putting an "X" mark appropriately. ● The exam is "closed books". Please put away in a non­suspicious place (i.e. not below the desk) any note, book, or similar. You will be expelled if, at any time, if you do not follow this rule. ● You are not allowed to communicate with other students, and you will be expelled from the exam if you do. ● Shut down and store electronic devices. They will be subject to inspection if found and you may be expelled if you are found using one. ● Please answer within the allowed space. Schemes are good, short answers are recommended. ● You can write in pen or pencil, any color, but avoid writing in red. ● No extra paper is allowed. ● The answers should be written exclusively in the space provided below the questions. SOLUTION 1 of 12 Question 1 (2 points) Please consider the following statements related to wireless networks, and discuss whether they are true or false (i.e., say if they are true or false and also motivate the answer!) A. A wireless network without any form of encryption (e.g., WEP, WPA) is not secure, because packets can be intercepted by anybody within radio range. It is true that anybody within range can intercept the packets, but this does not mean the network is “not secure”. Without knowing the purpose of the network, we cannot say if it is secure enough or not. B. A wireless network protected with WEP can be broken into with a completely passive…