312-50 Dumps

312-50 Free Practice Test

EC-Council 312-50: Ethical Hacking and Countermeasures (CEHv6)

QUESTION 21

- (Topic 9)
What is the most common vehicle for social engineering attacks?

Correct Answer: A
Pretexting is the act of creating and using an invented scenario (the pretext) to persuade a target to release information or perform an action and is usually done over the telephone.

QUESTION 22

- (Topic 19)
What is the advantage in encrypting the communication between the agent and the monitor in an Intrusion Detection System?

Correct Answer: B

QUESTION 23

- (Topic 6)
John wishes to install a new application onto his Windows 2000 server. He wants to ensure that any application he uses has not been Trojaned. What can he do to help ensure this?

Correct Answer: A
MD5 was developed by Professor Ronald L. Rivest of MIT. What it does, to quote the executive summary of rfc1321, is:
[The MD5 algorithm] takes as input a message of arbitrary length and produces as output a 128-bit "fingerprint" or "message digest" of the input. It is conjectured that it is computationally infeasible to produce two messages having the same message digest, or
to produce any message having a given prespecified target message digest. The MD5 algorithm is intended for digital signature applications, where a large file must be "compressed" in a secure manner before being encrypted with a private (secret) key under a public-key cryptosystem such as RSA.
In essence, MD5 is a way to verify data integrity, and is much more reliable than checksum and many other commonly used methods.

QUESTION 24

- (Topic 23)
Justine is the systems administrator for her company, an international shipping company with offices all over the world. Recent US regulations have forced the company to implement stronger and more secure means of communication. Justine and other administrators have been put in charge of securing the company's digital communication lines. After implementing email encryption, Justine now needs to implement robust digital signatures to ensure data authenticity and reliability. Justine has decided to implement digital signatures which are a variant of DSA and that operate on elliptical curve groups. These signatures are more efficient than DSA and are not vulnerable to a number field sieve attacks.
What type of signature has Justine decided to implement?

Correct Answer: B
The Elliptic Curve Digital Signature Algorithm (ECDSA) is a variant of the Digital Signature Algorithm (DSA)
which uses Elliptic curve cryptography. http://en.wikipedia.org/wiki/Elliptic_Curve_DSA

QUESTION 25

- (Topic 5)
You have successfully brute forced basic authentication configured on a Web Server using Brutus hacking tool. The username/password is “Admin” and “Bettlemani@”. You logon to the system using the brute forced password and plant backdoors and rootkits.
After downloading various sensitive documents from the compromised machine, you proceed to clear the log files to hide your trace..
Which event log located at C:Windowssystem32config contains the trace of your brute force attempts?

Correct Answer: B
The Security Event log (SecEvent.Evt) will contain all the failed logins against the system.