3 to 4 high fencing is considered minimal
protection, only for restricting casual trespassers. Answers "6 to 7 high" and "8 to 12 high" are better protection against intentional intruders.

Anonymous proxies are servers that act as intermediaries between the user and the internet, hiding the user's real IP address and allowing them to bypass network restrictions and access unauthorized websites. The best way to prevent users from visiting unauthorized websites using anonymous proxies is to block the IP address of known anonymous proxies on the firewall or router. This will prevent the user from establishing a connection with the proxy server and accessing the blocked content. Removing the anonymity from the proxy, analyzing IP traffic for proxy requests, or disabling the proxy server on the firewall are not effective ways to prevent future occurrences, as they do not address the root cause of the problem or require more resources and time to implement. References: The 17 Best Proxy Sites to Help You Browse Anonymously; Buy HTTP proxies and Socks5 | Anonymous Proxies; The Best Free Proxy Server List: Tested & Working! (2024).

Explanation/Reference:
Explanation:
SQL injection and Cross Site scripting attacks are the top two risks on the OWASP list.
The top risks identified by the Open Web Application Security Project (OWASP) group as of 2013 are as follows:
A1: Injection

Injection flaws, such as SQL, OS, and LDAP injection occur when untrusted data is sent to an interpreter as part of a command or query.
A2: Cross-Site Scripting (XSS)

A3: Broken Authentication and Session Management

A4: Insecure Direct Object References

A5: Cross-Site Request Forgery (CSRF)

A6: Security Misconfiguration

A7: Insecure Cryptographic Storage

A8: Failure to Restrict URL Access

A9: Insufficient Transport Layer Protection

A10: Unvalidated Redirects and Forwards

Incorrect Answers:
A: OWASP refers to SQL, OS, and LDAP injections, not to Dynamic Unicode injection.
C: Weak Authentication and Session Management attacks are ranked third on the OWASP list.
D: Security Misconfiguration is ranked third on the OWASP list.
References:
Conrad, Eric, Seth Misenar and Joshua Feldman, CISSP Study Guide, 2nd Edition, Syngress, Waltham,
2012, pp. 1109-1110

The business or computer records may be made by a person with
information transmitted by a person with knowledge, also. The
other answers are requirements for exceptions to the Hearsay Rule.