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Question 1:

What are the two basic types of attacks?(Choose two.

A. DoS

B. Passive

C. Sniffing

D. Active

E. Cracking

Correct Answer: BD

Passive and active attacks are the two basic types of attacks.


Question 2:

Which of the following best describes Vulnerability?

A. The loss potential of a threat

B. An action or event that might prejudice security

C. An agent that could take advantage of a weakness

D. A weakness or error that can lead to compromise

Correct Answer: D

A vulnerability is a flaw or weakness in system security procedures, design or implementation that could be exercised (accidentally triggered or intentionally exploited) and result in a harm to an IT system or activity.


Question 3:

ABC.com is legally liable for the content of email that is sent from its systems, regardless of whether the message was sent for private or business-related purpose. This could lead to prosecution for the sender and for the company\’s directors if, for example, outgoing email was found to contain material that was pornographic, racist or likely to incite someone to commit an act of terrorism.

You can always defend yourself by “ignorance of the law” clause.

A. True

B. False

Correct Answer: B

Ignorantia juris non excusat or Ignorantia legis neminem excusat (Latin for “ignorance of the law does not excuse” or “ignorance of the law excuses no one”) is a public policy holding that a person who is unaware of a law may not escape liability for violating that law merely because he or she was unaware of its content; that is, persons have presumed knowledge of the law. Presumed knowledge of the law is the principle in jurisprudence that one is bound by a law even if one does not know of it. It has also been defined as the “prohibition of ignorance of the law”.


Question 4:

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?

A. She has decided to implement ElGamal signatures since they offer more reliability than the typical DSA signatures

B. Justine has decided to use ECDSA signatures since they are more efficient than DSA signatures

C. Justine is now utilizing SHA-1 with RSA signatures to help ensure data reliability

D. These types of signatures that Justine has decided to use are called RSA-PSS signatures

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 5:

More sophisticated IDSs look for common shellcode signatures. But even these systems can be bypassed, by using polymorphic shellcode. This is a technique common among virus writers – it basically hides the true nature of the shellcode in different disguises.

How does a polymorphic shellcode work?

A. They convert the shellcode into Unicode, using loader to convert back to machine code then executing them

B. They compress shellcode into normal instructions, uncompress the shellcode using loader code and then executing the shellcode

C. They reverse the working instructions into opposite order by masking the IDS signatures

D. They encrypt the shellcode by XORing values over the shellcode, using loader code to decrypt the shellcode, and then executing the decrypted shellcode

Correct Answer: A

In computer security, a shellcode is a small piece of code used as the payload in the exploitation of a software vulnerability. It is called “shellcode” because it typically starts a command shell from which the attacker can control the compromised machine. Shellcode is commonly written in machine code, but any piece of code that performs a similar task can be called shellcode


312-50 VCE Dumps312-50 Practice Test312-50 Exam Questions

Question 6:

Gerald is a Certified Ethical Hacker working for a large financial institution in Oklahoma City. Gerald is currently performing an annual security audit of the company\’s network. One of the company\’s primary concerns is how the corporate data is transferred back and forth from the banks all over the city to the data warehouse at the company\’s home office. To see what type of traffic is being passed back and forth and to see how secure that data really is, Gerald uses a session hijacking tool to intercept traffic between a server and a client. Gerald hijacks an HTML session between a client running a web application which connects to a SQL database at the home office. Gerald does not kill the client\’s session; he simply monitors the traffic that passes between it and the server.

What type of session attack is Gerald employing here?

A. He is utilizing a passive network level hijack to see the session traffic used to communicate between the two devices

B. Gerald is using a passive application level hijack to monitor the client and server traffic

C. This type of attack would be considered an active application attack since he is actively monitoring the traffic

D. This type of hijacking attack is called an active network attack

Correct Answer: C

Session Hijacking is an active attack


Question 7:

TCP/IP Session Hijacking is carried out in which OSI layer?

A. Transport layer

B. Datalink layer

C. Physical Layer

D. Network Layer

Correct Answer: A


Question 8:

Lyle is a systems security analyst for Gusteffson and Sons, a large law firm in Beverly Hills. Lyle\’s responsibilities include network vulnerability scans, Antivirus monitoring, and IDS monitoring. Lyle receives a help desk call from a user in the Accounting department. This user reports that his computer is running very slow all day long and it sometimes gives him an error message that the hard drive is almost full. Lyle runs a scan on the computer with the company antivirus software and finds nothing. Lyle downloads another free antivirus application and scans the computer again. This time a virus is found on the computer. The infected files appear to be Microsoft Office files since they are in the same directory as that software. Lyle does some research and finds that this virus disguises itself as a genuine application on a computer to hide from antivirus software. What type of virus has Lyle found on this computer?

A. This type of virus that Lyle has found is called a cavity virus.

B. Lyle has discovered a camouflage virus on the computer.

C. By using the free antivirus software, Lyle has found a tunneling virus on the computer.

D. Lyle has found a polymorphic virus on this computer

Correct Answer: C


Question 9:

You run nmap port Scan on 10.0.0.5 and attempt to gain banner/server information from services running on ports 21, 110 and 123.

Here is the output of your scan results: Which of the following nmap command did you run?

A. nmap -A -sV -p21,110,123 10.0.0.5

B. nmap -F -sV -p21,110,123 10.0.0.5

C. nmap -O -sV -p21,110,123 10.0.0.5

D. nmap -T -sV -p21,110,123 10.0.0.5

Correct Answer: C


Question 10:

Which of the following type of scanning utilizes automated process of proactively identifying vulnerabilities of the computing systems present on a network?

A. Port Scanning

B. Single Scanning

C. External Scanning

D. Vulnerability Scanning

Correct Answer: D


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