QUESTION: 177

Fred is the network administrator for his company. Fred is testing an internal switch.
From an external IP address, Fred wants to try and trick this switch into thinking it already has established a session with his computer. How can Fred accomplish this?

Fred can accomplish this by sending an IP packet with the RST/SIN bit and the source address of his computer.
He can send an IP packet with the SYN bit and the source address of his computer.
Fred can send an IP packet with the ACK bit set to zero and the source address of the switch.
Fred can send an IP packet to the switch with the ACK bit and the source address of his machine.

Answer(s): D

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QUESTION: 178

Within the context of Computer Security, which of the following statements describes Social Engineering best?

Social Engineering is the act of publicly disclosing information
Social Engineering is the means put in place by human resource to perform time accounting
Social Engineering is the act of getting needed information from a person rather than breaking into a system
Social Engineering is a training program within sociology studies

Answer(s): C

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QUESTION: 179

In Trojan terminology, what is a covert channel?

A channel that transfers information within a computer system or network in a way that violates the security policy
A legitimate communication path within a computer system or network for transfer of data
It is a kernel operation that hides boot processes and services to mask detection
It is Reverse tunneling technique that uses HTTPS protocol instead of HTTP protocol to establish connections

Answer(s): A

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QUESTION: 180

When a normal TCP connection starts, a destination host receives a SYN (synchronize/start) packet from a source host and sends back a SYN/ACK (synchronize acknowledge). The destination host must then hear an ACK (acknowledge) of the SYN/ACK before the connection is established. This is referred to as the "TCP three-way handshake." While waiting for the ACK to the SYN ACK, a connection queue of finite size on the destination host keeps track of connections waiting to be completed. This queue typically empties quickly since the ACK is expected to arrive a few milliseconds after the SYN ACK.
How would an attacker exploit this design by launching TCP SYN attack?

Attacker generates TCP SYN packets with random destination addresses towards a victim host
Attacker floods TCP SYN packets with random source addresses towards a victim host
Attacker generates TCP ACK packets with random source addresses towards a victim host
Attacker generates TCP RST packets with random source addresses towards a victim host

Answer(s): B

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