Which of the following do hackers target because it usually communicates in cleartext, and
because it often carries sensitive information?

Raul wants to ensure that a hacker cannot access his DNS zone files. What action should he take
at the firewall?

Which single service can you disable to stop approximately two-thirds of the exploitation tools
used against Windows NT/2000?

Andreas is conducting a risk assessment of a network. He asks the following questions: What is
the target? How serious is the threat of intrusion? What is the probability of the threat occurring?
Considering these questions, which step of risk assessment is Andreas conducting?

What is the difference between digital signature mechanisms and simple encryption?

You have installed a proxy server that authenticates users. However, you find that one user has
bypassed the proxy server by entering the default gateway IP address. How can you solve this
problem?

In a Linux system running inetd, how do you stop the POP3, IMAPD and FTP services?

Which term describes the process of replacing valid source IP addresses with false IP addresses?

A malicious user has connected to your system and learned the specifics of your operating
system, including its current patch levels and the operating system name. What is the term for this
type of scanning attack?

Which type of attack utilizes an unauthorized service or daemon running on your system to send
out information to a hacker that can be used to further compromise the system?