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Exam Name: EC-Council Certified Security Analyst (ECSA)
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NO.1 In which of the following firewalls are the incoming or outgoing packets blocked from accessing
services for which there is no proxy?
A. Application level firewalls
B. Stateful multilayer inspection firewalls
C. Circuit level firewalls
D. Packet filters firewalls
Answer: A
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Reference:http://www.vicomsoft.com/learning-center/firewalls/
NO.2 Transmission control protocol accepts data from a data stream, divides it into chunks, and
adds a
TCP header creating a TCP segment.
The TCP header is the first 24 bytes of a TCP segment that contains the parameters and state of an
end-to-end TCP socket. It is used to track the state of communication between two TCP endpoints.
For a connection to be established or initialized, the two hosts must synchronize. The synchronization
requires each side to send its own initial sequence number and to receive a confirmation of exchange
in an acknowledgment (ACK) from the other side
The below diagram shows the TCP Header format:
How many bits is a acknowledgement number?
A. 24 bits
B. 8 bits
C. 32 bits
D. 16 bits
Answer: C
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Reference:http://en.wikipedia.org/wiki/Transmission_Control_Protocol(acknowledgement number)
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