Master the 312-50 Ethical Hacking and Countermeasures (CEHv6) content and be ready for exam day success quickly with this Exambible 312-50 free practice questions. We guarantee it!We make it a reality and give you real 312-50 questions in our EC-Council 312-50 braindumps.Latest 100% VALID EC-Council 312-50 Exam Questions Dumps at below page. You can use our EC-Council 312-50 braindumps and pass your exam.
Q431. What port scanning method is the most reliable but also the most detectable?
A. Null Scanning
B. Connect Scanning
C. ICMP Scanning
D. Idlescan Scanning
E. Half Scanning
F. Verbose Scanning
Answer: B
Explanation: A TCP Connect scan, named after the Unix connect() system call is the most accurate scanning method. If a port is open the operating system completes the TCP three-way handshake, and the port scanner immediately closes the connection.
Q432. While footprinting a network, what port/service should you look for to attempt a zone transfer?
A. 53 UDP
B. 53 TCP
C. 25 UDP
D. 25 TCP
E. 161 UDP
F. 22 TCP
G. 60 TCP
Answer: B
Explanation: IF TCP port 53 is detected, the opportunity to attempt a zone transfer is there.
Q433. Spears Technology, Inc is a software development company located in Los Angeles, California. They reported a breach in security, stating that its “security defenses has been breached and exploited for 2 weeks by hackers. “The hackers had accessed and downloaded 90,000 address containing customer credit cards and password. Spears Technology found this attack to be so to law enforcement officials to protect their intellectual property.
How did this attack occur? The intruder entered through an employees home machine, which was connected to Spears Technology, Inc’s corporate VPN network. The application called BEAST Trojan was used in the attack to open a “Back Door” allowing the hackers undetected access. The security breach was discovered when customers complained about the usage of their credit cards without their knowledge.
The hackers were traced back to Beijing China through e-mail address evidence. The credit card information was sent to that same e-mail address. The passwords allowed the hackers to access Spears Technology’s network from a remote location, posing as employees. The intent of the attacker was to steal the source code for their VOIP system and “hold it hostage” from Spears Technology, Inc exchange for ransom.
The hackers had intended on selling the stolen VOIP software source code to competitors.
How would you prevent such attacks from occurring in the future at Spears Technology?
A. Disable VPN access to all your employees from home machines
B. Allow VPN access but replace the standard authentication with biometric authentication
C. Replace the VPN access with dial-up modem access to the company’s network
D. Enable 25 character complex password policy for employees to access the VPN network.
Answer: A
Explanation: As long as there is a way in for employees through all security measures you can’t be secure because you never know what computer the employees use to access recourses at their workplace.
Q434. Bob is acknowledged as a hacker of repute and is popular among visitors of “underground” sites. Bob is willing to share his knowledge with those who are willing to learn, and many have expressed their interest in learning from him. However, this knowledge has a risk associated with it, as it can be used for malevolent attacks as well.
In this context, what would be the most affective method to bridge the knowledge gap between the “black” hats or crackers and the “white” hats or computer security professionals? (Choose the test answer)
A. Educate everyone with books, articles and training on risk analysis, vulnerabilities and safeguards.
B. Hire more computer security monitoring personnel to monitor computer systems and networks.
C. Make obtaining either a computer security certification or accreditation easier to achieve so more individuals feel that they are a part of something larger than life.
D. Train more National Guard and reservist in the art of computer security to help out in times of emergency or crises.
Answer: A
Explanation: Bridging the gap would consist of educating the white hats and the black hats equally so that their knowledge is relatively the same. Using books, articles, the internet, and professional training seminars is a way of completing this goal.
Q435. Which tool/utility can help you extract the application layer data from each TCP connection from a log file into separate files?
A. Snort
B. argus
C. TCPflow
D. Tcpdump
Answer: C
Explanation: Tcpflow is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis or debugging. A program like 'tcpdump' shows a summary of packets seen on the wire, but usually doesn't store the data that's actually being transmitted. In contrast, tcpflow reconstructs the actual data streams and stores each flow in a separate file for later analysis.
Q436. You want to know whether a packet filter is in front of 192.168.1.10. Pings to 192.168.1.10 don't get answered. A basic nmap scan of 192.168.1.10 seems to hang without returning any information. What should you do next?
A. Use NetScan Tools Pro to conduct the scan
B. Run nmap XMAS scan against 192.168.1.10
C. Run NULL TCP hping2 against 192.168.1.10
D. The firewall is blocking all the scans to 192.168.1.10
Answer: C
Q437. What are the two basic types of attacks?(Choose two.
A. DoS
B. Passive
C. Sniffing
D. Active
E. Cracking
Answer: BD
Explanation: Passive and active attacks are the two basic types of attacks.
Q438. To scan a host downstream from a security gateway, Firewalking:
A. Sends a UDP-based packet that it knows will be blocked by the firewall to determine how specifically the firewall responds to such packets
B. Uses the TTL function to send packets with a TTL value set to expire one hop past the identified security gateway
C. Sends an ICMP ''administratively prohibited'' packet to determine if the gateway will drop the packet without comment.
D. Assesses the security rules that relate to the target system before it sends packets to any hops on the route to the gateway
Answer: B
Explanation: Firewalking uses a traceroute-like IP packet analysis to determine whether or not a particular packet can pass from the attacker’s host to a destination host through a packet-filtering device. This technique can be used to map ‘open’ or ‘pass through’ ports on a gateway. More over, it can determine whether packets with various control information can pass through a given gateway.
Q439. Snort has been used to capture packets on the network. On studying the packets, the penetration tester finds it to be abnormal. If you were the penetration tester, why would you find this abnormal?
(Note: The student is being tested on concept learnt during passive OS fingerprinting, basic TCP/IP connection concepts and the ability to read packet signatures from a sniff dumo.)
05/20-17:06:45.061034 192.160.13.4:31337 -> 172.16.1.101:1 TCP TTL:44 TOS:0x10 ID:242 ***FRP** Seq: 0XA1D95 Ack: 0x53 Win: 0x400 . . .
05/20-17:06:58.685879 192.160.13.4:31337 -> 172.16.1.101:1024 TCP TTL:44 TOS:0x10 ID:242 ***FRP** Seg: 0XA1D95 Ack: 0x53 Win: 0x400
What is odd about this attack? (Choose the most appropriate statement)
A. This is not a spoofed packet as the IP stack has increasing numbers for the three flags.
B. This is back orifice activity as the scan comes from port 31337.
C. The attacker wants to avoid creating a sub-carrier connection that is not normally valid.
D. There packets were created by a tool; they were not created by a standard IP stack.
Answer: B
Explanation: Port 31337 is normally used by Back Orifice. Note that 31337 is hackers spelling of ‘elite’, meaning ‘elite hackers’.
Q440. If you receive a RST packet while doing an ACK scan, it indicates that the port is open.(True/False).
A. True
B. False
Answer: A
Explanation: When and ACK is sent to an open port, a RST is returned.