QUESTION: 117

A TCP connect Scan which is also called a Vanilla TCP port scan will send a SYN packet to ports sequentially to see which are open.
Using the Vanilla TCP Port Scan, what would be expected as a response from a port that is open?

FIN
SYN/ACK
RST/ACT
ACK

Answer(s): B

Explanation:

During the Vanilla TCP Connect scan, a hacker sends the first packet of the handshake sequence with the Synchronize flag (SYN) set to the intended target device. If the target port is closed, the target device sends a TCP reply with the Reset (RST) flag set. If the target port is open, the target device sends a TCP reply with the SYN and Acknowledgment (ACK) flag set. Finally, the hacker sends an ACK response to complete the three-way TCP handshake.

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QUESTION: 118

A malicious hacker has been trying to penetrate abc.com from an external network location. He has tried every trick in his bag but still did not succeed.
From the choice presented below, what type of logical attempt is he most likely to attempt next?

Elevation of privileges
Pilfering of data
Denial of service
Installation of a back door

Answer(s): C

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QUESTION: 119

As you have learned in your Penetration Testing training or field experience, WEP is the encryption that was used with early WLAN implementation.it uses a stream cipher called RC4 to produce a string of bith that will be exclusive OR or XOR with the plain text to form the cliphertext. Which of the following statements represents the rules associated with XOR binary mathematics or comparison? Choose the best

If both bits are different the result will be one,if both bits are the same the result will be a zero.
If both bits are different the result will be zero,if both bits are the same the result will be a one.
Only when both bits have a value of one,will the result be one.
Only when both bits have a value of zero,will the result be one.

Answer(s): A

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