John works as an Ethical Hacker for PassGuide Inc. He wants to find out the ports that are open in PassGuide's server using a port scanner. However, he does not want to establish a full TCP connection.
Which of the following scanning techniques will he use to accomplish this task?

• A.Xmas tree
• B.TCP FIN
• C.TCP SYN/ACK
• D.TCP SYN

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Which of the following tools can be used for stress testing of a Web server?
Each correct answer represents a complete solution. Choose two.

• A.Spyware
• B.Internet bots
• C.Scripts
• D.Anti-virus software

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Which of the following steps can be taken as countermeasures against sniffer attacks?
Each correct answer represents a complete solution. Choose all that apply.

• A.Use encrypted protocols for all communications.
• B.Use switches instead of hubs since they switch communications, which means that information is delivered only to the predefined host.
• C.Use tools such as StackGuard and Immunix System to avoid attacks.
• D.Reduce the range of the network to avoid attacks into wireless networks.

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Which of the following types of attacks is often performed by looking surreptitiously at the keyboard or monitor of an employee's computer?

• A.Buffer-overflow attack
• B.Man-in-the-middle attack
• C.Shoulder surfing attack
• D.Denial-of-Service (DoS) attack

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Which of the following statements are true about a keylogger?
Each correct answer represents a complete solution. Choose all that apply.

• A.It is a software tool used to trace all or specific activities of a user on a computer.
• B.It records all keystrokes on the victim's computer in a predefined log file.
• C.It can be remotely installed on a computer system.
• D.It uses hidden code to destroy or scramble data on the hard disk.

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