Exam Code: 312-50 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Ethical Hacking and Countermeasures (CEHv6)
Certification Provider: EC-Council
Free Today! Guaranteed Training- Pass 312-50 Exam.
Q161. Bob has been hired to perform a penetration test on ABC.com. He begins by looking at IP address ranges owned by the company and details of domain name registration. He then goes to News Groups and financial web sites to see if they are leaking any sensitive information of have any technical details online.
Within the context of penetration testing methodology, what phase is Bob involved with?
A. Passive information gathering
B. Active information gathering
C. Attack phase
D. Vulnerability Mapping
Answer: A
Explanation: He is gathering information and as long as he doesn’t make contact with any of the targets systems he is considered gathering this information in a passive mode.
Q162. Darren is the network administrator for Greyson & Associates, a large law firm in Houston. Darren is responsible for all network functions as well as any digital forensics work that is needed. Darren is examining the firewall logs one morning and notices some unusual activity. He traces the activity target to one of the firm's internal file servers and finds that many documents on that server were destroyed. After performing some calculations, Darren finds the damage to be around $75,000 worth of lost data. Darren decides that this incident should be handled and resolved within the same day of its discovery.
What incident level would this situation be classified as?
A. This situation would be classified as a mid-level incident
B. Since there was over $50,000 worth of loss, this would be considered a high-level incident
C. Because Darren has determined that this issue needs to be addressed in the same day it was discovered, this would be considered a low-level incident
D. This specific incident would be labeled as an immediate-level incident
Answer: D
Q163. Your lab partner is trying to find out more information about a competitors web site. The site has a .com extension. She has decided to use some online whois tools and look in one of the regional Internet registrys. Which one would you suggest she looks in first?
A. LACNIC
B. ARIN
C. APNIC
D. RIPE
E. AfriNIC
Answer: B
Explanation: Regional registries maintain records from the areas from which they govern. ARIN is responsible for domains served within North and South America and therefore, would be a good starting point for a .com domain.
Q164. Giles is the network administrator for his company, a graphics design company based in Dallas. Most of the network is comprised of Windows servers and workstations, except for some designers that prefer to use MACs. These MAC users are running on the MAC OS X operating system. These MAC users also utilize iChat to talk between each other. Tommy, one of these MAC users, calls Giles and says that his computer is running very slow. Giles then gets more calls from the other MAC users saying they are receiving instant messages from Tommy even when he says he is not on his computer. Giles immediately unplugs Tommy's computer from the network to take a closer look. He opens iChat on Tommy's computer and it says that it sent a file called latestpics.tgz to all the other MAC users. Tommy says he never sent those files. Giles also sees that many of the computer's applications appear to be altered. The path where the files should be has an altered file and the original application is stored in the file's resource fork.
What has Giles discovered on Tommy's computer?
A. He has discovered OSX/Chat-burner virus on Tommy's computer
B. Giles has found the OSX/Leap-A virus on Tommy's computer
C. This behavior is indicative of the OSX/Inqtana.A virus
D. On Tommy's computer, Giles has discovered an apparent infection of the OSX/Transmitter.B virus
Answer: B
Explanation: OSX.Leap.A is a worm that targets installs of Macintosh OS X and spreads via iChat Instant Messenger program. http://www.symantec.com/security_response/writeup.jsp?docid=2006-021614-4006-99
Q165. Dave has been assigned to test the network security of Acme Corp. The test was announced to the employees. He created a webpage to discuss the progress of the tests with employees who were interested in following the test. Visitors were allowed to click on a sand clock to mark the progress of the test. Dave successfully embeds a keylogger. He also added some statistics on the webpage. The firewall protects the network well and allows strict Internet access. How was security compromised and how did the firewall respond?
A. The attack did not fall through as the firewall blocked the traffic
B. The attack was social engineering and the firewall did not detect it
C. The attack was deception and security was not directly compromised
D. Security was not compromised as the webpage was hosted internally
Answer: B
Explanation: This was just another way to trick the information out of the users without the need to hack into any systems. All traffic is outgoing and initiated by the user so the firewall will not react.
Q166. Neil notices that a single address is generating traffic from its port 500 to port 500 of several other machines on the network. This scan is eating up most of the network bandwidth and Neil is concerned. As a security professional, what would you infer from this scan?
A. It is a network fault and the originating machine is in a network loop
B. It is a worm that is malfunctioning or hardcoded to scan on port 500
C. The attacker is trying to detect machines on the network which have SSL enabled
D. The attacker is trying to determine the type of VPN implementation and checking for IPSec
Answer: D
Explanation: Port 500 is used by IKE (Internet Key Exchange). This is typically used for IPSEC-based VPN software, such as Freeswan, PGPnet, and various vendors of in-a-box VPN solutions such as Cisco. IKE is used to set up the session keys. The actual session is usually sent with ESP (Encapsulated Security Payload) packets, IP protocol 50 (but some in-a-box VPN's such as Cisco are capable of negotiating to send the encrypted tunnel over a UDP channel, which is useful for use across firewalls that block IP protocols other than TCP or UDP).
Q167. If an attacker's computer sends an IPID of 24333 to a zombie (Idle Scanning) computer on a closed port, what will be the response?
A. The zombie computer will respond with an IPID of 24334.
B. The zombie computer will respond with an IPID of 24333.
C. The zombie computer will not send a response.
D. The zombie computer will respond with an IPID of 24335.
Answer: C
Q168. ou are gathering competitive intelligence on ABC.com. You notice that they have jobs
listed on a few Internet job-hunting sites. There are two job postings for network and system administrators. How can this help you in footprint the organization?
A. The IP range used by the target network
B. An understanding of the number of employees in the company
C. How strong the corporate security policy is
D. The types of operating systems and applications being used.
Answer: D
Explanation: From job posting descriptions one can see which is the set of skills, technical knowledge, system experience required, hence it is possible to argue what kind of operating systems and applications the target organization is using.
Q169. Samuel is the network administrator of DataX communications Inc. He is trying to configure his firewall to block password brute force attempts on his network. He enables blocking the intruder’s IP address for a period of 24 hours time after more than three unsuccessful attempts. He is confident that this rule will secure his network hackers on the Internet.
But he still receives hundreds of thousands brute-force attempts generated from various IP addresses around the world. After some investigation he realizes that the intruders are using a proxy somewhere else on the Internet which has been scripted to enable the random usage of various proxies on each request so as not to get caught by the firewall use.
Later he adds another rule to his firewall and enables small sleep on the password attempt so that if the password is incorrect, it would take 45 seconds to return to the user to begin another attempt. Since an intruder may use multiple machines to brute force the password, he also throttles the number of connections that will be prepared to accept from a particular IP address. This action will slow the intruder’s attempts.
Samuel wants to completely block hackers brute force attempts on his network.
What are the alternatives to defending against possible brute-force password attacks on his site?
A. Enforce a password policy and use account lockouts after three wrong logon attempts even through this might lock out legit users
B. Enable the IDS to monitor the intrusion attempts and alert you by e-mail about the IP address of the intruder so that you can block them at the firewall manually
C. Enforce complex password policy on your network so that passwords are more difficult to brute force
D. You can’t completely block the intruders attempt if they constantly switch proxies
Answer: D
Explanation: Without knowing from where the next attack will come there is no way of proactively block the attack. This is becoming a increasing problem with the growth of large bot nets using ordinary workstations and home computers in large numbers.
Q170. Which of the following is an automated vulnerability assessment tool.
A. Whack a Mole
B. Nmap
C. Nessus
D. Kismet
E. Jill32
Answer: C
Explanation: Nessus is a vulnerability assessment tool.