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Q361. Which DNS resource record can indicate how long any "DNS poisoning" could last?
A. MX
B. SOA
C. NS
D. TIMEOUT
Answer: B
Explanation: The SOA contains information of secondary servers, update intervals and expiration times.
Q362. Jason works in the sales and marketing department for a very large advertising agency located in Atlanta. Jason is working on a very important marketing campaign for his company's largest client. Before the project could be completed and implemented, a competing advertising company comes out with the exact same marketing materials and advertising, thus rendering all the work done for Jason's client unusable. Jason is questioned about this and says he has no idea how all the material ended up in the hands of a competitor.
Without any proof, Jason's company cannot do anything except move on. After working on another high profile client for about a month, all the marketing and sales material again ends up in the hands of another competitor and is released to the public before Jason's company can finish the project. Once again, Jason says that he had nothing to do with it and does not know how this could have happened. Jason is given leave with pay until they can figure out what is going on.
Jason's supervisor decides to go through his email and finds a number of emails that were sent to the competitors that ended up with the marketing material. The only items in the emails were attached jpg files, but nothing else. Jason's supervisor opens the picture files, but cannot find anything out of the ordinary with them.
What technique has Jason most likely used?
A. Stealth Rootkit Technique
B. Snow Hiding Technique
C. ADS Streams Technique
D. Image Steganography Technique
Answer: D
Q363. Wayne is the senior security analyst for his company. Wayne is examining some traffic logs on a server and came across some inconsistencies. Wayne finds some IP packets from a computer purporting to be on the internal network. The packets originate from 192.168.12.35 with a TTL of
15. The server replied to this computer and received a response from 192.168.12.35 with a TTL of
21. What can Wayne infer from this traffic log?
A. The initial traffic from 192.168.12.35 was being spoofed.
B. The traffic from 192.168.12.25 is from a Linux computer.
C. The TTL of 21 means that the client computer is on wireless.
D. The client computer at 192.168.12.35 is a zombie computer.
Answer: A
Q364. Steven works as a security consultant and frequently performs penetration tests for Fortune 500 companies. Steven runs external and internal tests and then creates reports to show the companies where their weak areas are. Steven always signs a non-disclosure agreement before performing his tests. What would Steven be considered?
A. Whitehat Hacker
B. BlackHat Hacker
C. Grayhat Hacker
D. Bluehat Hacker
Answer: A
Explanation: A white hat hacker, also rendered as ethical hacker, is, in the realm of information technology, a person who is ethically opposed to the abuse of computer systems. Realization that the Internet now represents human voices from around the world has made the defense of its integrity an important pastime for many. A white hat generally focuses on securing IT systems, whereas a black hat (the opposite) would like to break into them.
Q365. You are attempting to map out the firewall policy for an organization. You discover your target system is one hop beyond the firewall. Using hping2, you send SYN packets with the exact TTL of the target system starting at port 1 and going up to port 1024. What is this process known as?
A. Footprinting
B. Firewalking
C. Enumeration
D. Idle scanning
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.
Q366. You may be able to identify the IP addresses and machine names for the firewall, and the names of internal mail servers by:
A. Sending a mail message to a valid address on the target network, and examining the header information generated by the IMAP servers
B. Examining the SMTP header information generated by using the –mx command parameter of DIG
C. Examining the SMTP header information generated in response to an e-mail message sent to an invalid address
D. Sending a mail message to an invalid address on the target network, and examining the header information generated by the POP servers
Answer: C
Q367. The FIN flag is set and sent from host A to host B when host A has no more data to transmit (Closing a TCP connection). This flag releases the connection resources. However, host A can continue to receive data as long as the SYN sequence number of transmitted packets from host B are lower than the packet segment containing the set FIN flag.
A. True
B. False
Answer: A
Explanation: For sequence number purposes, the SYN is considered to occur before the first actual data octet of the segment in which it occurs, while the FIN is considered to occur after the last actual data octet in a segment in which it occurs. So packets receiving out of order will still be accepted.
Q368. While performing ping scans into a target network you get a frantic call from the organization’s security team. They report that they are under a denial of service attack. When you stop your scan, the smurf attack event stops showing up on the organization’s IDS monitor. How can you modify your scan to prevent triggering this event in the IDS?
A. Scan more slowly.
B. Do not scan the broadcast IP.
C. Spoof the source IP address.
D. Only scan the Windows systems.
Answer: B
Explanation: Scanning the broadcast address makes the scan target all IP addresses on that subnet at the same time.
Q369. John is using tokens for the purpose of strong authentication. He is not confident that his security is considerably strong.
In the context of Session hijacking why would you consider this as a false sense of security?
A. The token based security cannot be easily defeated.
B. The connection can be taken over after authentication.
C. A token is not considered strong authentication.
D. Token security is not widely used in the industry.
Answer: B
Explanation: A token will give you a more secure authentication, but the tokens will not help against attacks that are directed against you after you have been authenticated.
Q370. Nathalie would like to perform a reliable scan against a remote target. She is not concerned about being stealth at this point. Which of the following type of scans would be the most accurate and reliable?
A. A FIN Scan
B. A Half Scan
C. A UDP Scan
D. The TCP Connect Scan
Answer: D
Explanation: The connect() system call provided by your operating system is used to open a connection to every interesting port on the machine. If the port is listening, connect() will succeed, otherwise the port isn't reachable. One strong advantage to this technique is that you don't need any special privileges. This is the fastest scanning method supported by nmap, and is available with the -t (TCP) option. The big downside is that this sort of scan is easily detectable and filterable.