Certified Ethical Hacker CEH Changed CEH-001 Questions

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Question 88

What is the IV key size used in WPA2?

Options:

128

Question 89

Bob was frustrated with his competitor, Brownies Inc., and decided to launch an attack that would result in serious financial losses. He planned the attack carefully and carried out the attack at the appropriate moment.

Meanwhile, Trent, an administrator at Brownies Inc., realized that their main financial transaction server had been attacked. As a result of the attack, the server crashed and Trent needed to reboot the system, as no one was able to access the resources of the company. This process involves human interaction to fix it.

What kind of Denial of Service attack was best illustrated in the scenario above?

Options:

Simple DDoS attack

DoS attacks which involves flooding a network or system

DoS attacks which involves crashing a network or system

DoS attacks which is done accidentally or deliberately

Question 90

Study the snort rule given below and interpret the rule.

alert tcp any any --> 192.168.1.0/24 111 (content:"|00 01 86 a5|"; msG. "mountd access";)

Options:

An alert is generated when a TCP packet is generated from any IP on the 192.168.1.0 subnet and destined to any IP on port 111

An alert is generated when any packet other than a TCP packet is seen on the network and destined for the 192.168.1.0 subnet

An alert is generated when a TCP packet is originated from port 111 of any IP address to the 192.168.1.0 subnet

An alert is generated when a TCP packet originating from any IP address is seen on the network and destined for any IP address on the 192.168.1.0 subnet on port 111

Question 91

Which of the following encryption is NOT based on block cipher?