FinalExam wireless Networking

CS547 Wireless Networking and Security Final Exam

Question 1 (10 pts): What are millimeter waves? Why is it restricted to short distance communications? Describe the application of millimeter waves in airport security scanning (Research). Question 2 (15 pts): Describe the iOS keychain. Describe how hackers can possibly steal the iOS keychain and crack Apple account passwords (Research). Question 3 (10 pts): Describe Near Field Communication (NFC) wireless technology (Research). Question 4 (10 pts): A new wireless web transmission protocol has been developed using a numeric value (16-bit size) to represent each word. Discuss the pros and cons of such scheme in terms of usability, efficiency, and bandwidth utilization (Research). Question 5 (15 pts): Cellular communications work on multiple and sometimes incompatible technologies: GSM, CDMA and 4G LTE. Briefly describe their main differences. Describe why the Verizon cellular network does not or cannot provide the simultaneous talk-and-browse feature similar to that provided by the AT&T cellular network (Research). Question 6 (15 pts): The earlier wireless encryption, WEP, had been cracked several years ago, Now, the newer encryption technology, WPA2 have been cracked. For each of these, provide a detailed description on how the password cracking is accomplished (Research). Question 7 (15 pts): Describe at least four (4) security services provided by Bluetooth. Select two (2) from these services and, for each, briefly describe a realistic way of defeating its purpose (Research). Question 8 (10 pts): Compare and contrast the built-in security features found in the following cellular technologies: GSM, GPRS, and UMTS.