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Sybex CEH Certified Ethical Hacker Version 8 Study Guide

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xxxviii Answers to Assessment Test<br />

33. B. Passwords are the simplest form of authentication and are commonly used. They fall<br />

under first-factor authentication and are referred to as something you know.<br />

34. A. An IP address is a logical address assigned at layer 3 and can be assigned to an IP-based<br />

system. The same IP address can be assigned to different systems, albeit at different times<br />

unlike MAC addresses.<br />

35. C. An IPv6 address has 128 bits as opposed to IPv4, which only has 32 bits. This increased<br />

amount of bits allows for the generation of many more IP addresses than is possible with<br />

IPv4.

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