EC-COUNCIL EC-COUNCIL Certifications 312-50V8 Questions & Answers

• Question 161:

  What are the limitations of Vulnerability scanners? (Select 2 answers)

  A. There are often better at detecting well-known vulnerabilities than more esoteric ones

  B. The scanning speed of their scanners are extremely high

  C. It is impossible for any,one scanning product to incorporate all known vulnerabilities in a timely manner

  D. The more vulnerabilities detected,the more tests required

  E. They are highly expensive and require per host scan license

  Correct Answer: AC

• Question 162:

  Stephanie works as senior security analyst for a manufacturing company in Detroit.

  Stephanie manages network security throughout the organization. Her colleague Jason told her in confidence that he was able to see confidential corporate information posted on the external website http://www.jeansclothesman.com. He tries random URLs on the company's website and finds confidential information leaked over the web. Jason says this happened about a month ago. Stephanie visits the said URLs, but she finds nothing. She is very concerned about this, since someone should be held accountable if there was sensitive information posted on the website.

  Where can Stephanie go to see past versions and pages of a website?

  A. She should go to the web page Samspade.org to see web pages that might no longer be on the website

  B. If Stephanie navigates to Search.com; she will see old versions of the company website

  C. Stephanie can go to Archive.org to see past versions of the company website

  D. AddressPast.com would have any web pages that are no longer hosted on the company's website

  Correct Answer: C

• Question 163:

  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

• Question 164:

  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' //

  Correct Answer: A

• Question 165:

  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

  Correct Answer: B

• Question 166:

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

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

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

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

  Correct Answer: A

• Question 167:

  You are the security administrator of Jaco Banking Systems located in Boston. You are setting up e

  banking website (http://www.ejacobank.com) authentication system. Instead of issuing banking customer with a single password, you give them a printed list of 100 unique passwords. Each time the customer needs to log into the e-banking system website, the customer enters the next password on the list. If someone sees them type the password using shoulder surfing, MiTM or keyloggers, then no damage is done because the password will not be accepted a second time. Once the list of 100 passwords is almost finished, the system automatically sends out a new password list by encrypted e-mail to the customer.

  You are confident that this security implementation will protect the customer from password abuse.

  Two months later, a group of hackers called "HackJihad" found a way to access the one-time password list issued to customers of Jaco Banking Systems. The hackers set up a fake website (http://www.ejacobank.com) and used phishing attacks to direct ignorant customers to it. The fake website asked users for their e- banking username and password, and the next unused entry from their one-time password sheet. The hackers collected 200 customer's username/passwords this way. They transferred money from the customer's bank account to various offshore accounts.

  Your decision of password policy implementation has cost the bank with USD 925, 000 to hackers. You immediately shut down the e-banking website while figuring out the next best security solution.

  What effective security solution will you recommend in this case?

  A. Implement Biometrics based password authentication system. Record the customers face image to the authentication database

  B. Configure your firewall to block logon attempts of more than three wrong tries

  C. Enable a complex password policy of 20 characters and ask the user to change the password immediately after they logon and do not store password histories

  D. Implement RSA SecureID based authentication system

  Correct Answer: D

• Question 168:

  How do you defend against Privilege Escalation?

  A. Use encryption to protect sensitive data

  B. Restrict the interactive logon privileges

  C. Run services as unprivileged accounts

  D. Allow security settings of IE to zero or Low

  E. Run users and applications on the least privileges

  Correct Answer: ABCE

• Question 169:

  What does ICMP (type 11, code 0) denote?

  A. Source Quench

  B. Destination Unreachable

  C. Time Exceeded

  D. Unknown Type

  Correct Answer: C

• Question 170:

  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