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Code d'Examen: EC1-349
Nom d'Examen: EC-COUNCIL (Computer Hacking Forensic Investigator Exam)
Questions et réponses: 180 Q&As
Code d'Examen: 312-50v7
Nom d'Examen: EC-COUNCIL (Ethical Hacking and Countermeasures (CEHv7))
Questions et réponses: 514 Q&As
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NO.1 SYN Flood is a DOS attack in which an attacker deliberately violates the three-way handshake and
opens a large number of half-open TCP connections. The signature of attack for SYN Flood contains:
A. The source and destination address having the same value
B. A large number of SYN packets appearing on a network without the corresponding reply packets
C. The source and destination port numbers having the same value
D. A large number of SYN packets appearing on a network with the corresponding reply packets
Answer: B
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NO.2 The following script shows a simple SQL injection. The script builds an SQL query by concatenating
hard-coded strings together with a string entered by the user: The user is prompted to enter the name of a
city on a Web form. If she enters Chicago, the query assembled by the script looks similar to the following:
SELECT * FROM OrdersTable WHERE ShipCity = 'Chicago'
How will you delete the OrdersTable from the database using SQL Injection?
A. Chicago'; drop table OrdersTable -
B. Delete table'blah'; OrdersTable -
C. EXEC; SELECT * OrdersTable > DROP -
D. cmdshell'; 'del c:\sql\mydb\OrdersTable' //
Answer: A
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NO.3 This IDS defeating technique works by splitting a datagram (or packet) into multiple fragments and the
IDS will not spot the true nature of the fully assembled datagram. The datagram is not reassembled until it
reaches its final destination. It would be a processor-intensive task for IDS to reassemble all fragments
itself, and on a busy system the packet will slip through the IDS onto the network. What is this technique
called?
A. IP Routing or Packet Dropping
B. IDS Spoofing or Session Assembly
C. IP Fragmentation or Session Splicing
D. IP Splicing or Packet Reassembly
Answer: C
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NO.4 TCP SYN Flood attack uses the three-way handshake mechanism.
An attacker at system A sends a SYN packet to victim at system B.
System B sends a SYN/ACK packet to victim A.
As a normal three-way handshake mechanism system A should send an ACK packet to system B,
however, system A does not send an ACK packet to system B. In this case client B is waiting for an ACK
packet from client A.
This status of client B is called _________________
A. "half-closed"
B. "half open"
C. "full-open"
D. "xmas-open"
Answer: B
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NO.5 Anonymizer sites access the Internet on your behalf, protecting your personal information from
disclosure. An anonymizer protects all of your computer's identifying information while it surfs for you,
enabling you to remain at least one step removed from the sites you visit.
You can visit Web sites without allowing anyone to gather information on sites visited by you. Services
that provide anonymity disable pop-up windows and cookies, and conceal visitor's IP address.
These services typically use a proxy server to process each HTTP request. When the user requests a
Web page by clicking a hyperlink or typing a URL into their browser, the service retrieves and displays the
information using its own server. The remote server (where the requested Web page resides) receives
information on the anonymous Web surfing service in place of your information.
In which situations would you want to use anonymizer? (Select 3 answers)
A. Increase your Web browsing bandwidth speed by using Anonymizer
B. To protect your privacy and Identity on the Internet
C. To bypass blocking applications that would prevent access to Web sites or parts of sites that you want
to visit.
D. Post negative entries in blogs without revealing your IP identity
Answer: B,C,D
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NO.6 Jack Hacker wants to break into Brown Co.'s computers and obtain their secret double fudge cookie
recipe. Jack calls Jane, an accountant at Brown Co., pretending to be an administrator from Brown Co.
Jack tells Jane that there has been a problem with some accounts and asks her to verify her password
with him ''just to double check our records.'' Jane does not suspect anything amiss, and parts with her
password. Jack can now access Brown Co.'s computers with a valid user name and password, to steal
the cookie recipe. What kind of attack is being illustrated here?
A. Reverse Psychology
B. Reverse Engineering
C. Social Engineering
D. Spoofing Identity
E. Faking Identity
Answer: C
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NO.7 Jimmy, an attacker, knows that he can take advantage of poorly designed input validation routines to
create or alter SQL commands to gain access to private data or execute commands in the database.
What technique does Jimmy use to compromise a database.?
A. Jimmy can submit user input that executes an operating system command to compromise a target
system
B. Jimmy can gain control of system to flood the target system with requests, preventing legitimate users
from gaining access
C. Jimmy can utilize an incorrect configuration that leads to access with higher-than expected privilege of
the database
D. Jimmy can utilize this particular database threat that is an SQL injection technique to penetrate a target
system
Answer: D
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NO.8 Which of the following countermeasure can specifically protect against both the MAC Flood and MAC
Spoofing attacks?
A. Configure Port Security on the switch
B. Configure Port Recon on the switch
C. Configure Switch Mapping
D. Configure Multiple Recognition on the switch
Answer: A
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