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Q1. What type of Virus is shown here?
A. Macro Virus
B. Cavity Virus
C. Boot Sector Virus
D. Metamorphic Virus
E. Sparse Infector Virus
Answer: B
Q2. According to the CEH methodology, what is the next step to be performed after footprinting?
A. Enumeration
B. Scanning
C. System Hacking
D. Social Engineering
E. Expanding Influence
Answer: B
Explanation: Once footprinting has been completed, scanning should be attempted next.
Scanning should take place on two distinct levels: network and host.
Q3. Attacker forges a TCP/IP packet, which causes the victim to try opening a connection with itself. This causes the system to go into an infinite loop trying to resolve this unexpected connection. Eventually, the connection times out, but during this resolution, the machine appears to hang or become very slow. The attacker sends such packets on a regular basis to slow down the system.
Unpatched Windows XP and Windows Server 2003 machines are vulnerable to these attacks. What type of Denial of Service attack is represented here?
A. SMURF Attacks
B. Targa attacks
C. LAND attacks
D. SYN Flood attacks
Answer: C
Explanation: The attack involves sending a spoofed TCP SYN packet (connection initiation) with the target host's IP address and an open port as both source and destination.The reason a LAND attack works is because it causes the machine to reply to itself continuously.
http://en.wikipedia.org/wiki/LAND
Q4. Bill is attempting a series of SQL queries in order to map out the tables within the database that he is trying to exploit.
Choose the attack type from the choices given below.
A. Database Fingerprinting
B. Database Enumeration
C. SQL Fingerprinting
D. SQL Enumeration
Answer: A
Explanation: He is trying to create a view of the characteristics of the target database, he is taking it’s fingerprints.
Q5. John is a keen administrator, and has followed all of the best practices as he could find on securing his Windows Server. He has renamed the Administrator account to a new name that he is sure cannot be easily guessed. However, there are people who already attempt to compromise his newly renamed administrator account.
How is it possible for a remote attacker to decipher the name of the administrator account if it has been renamed?
A. The attacker used the user2sid program.
B. The attacker used the sid2user program.
C. The attacker used nmap with the –V switch.
D. The attacker guessed the new name.
Answer: B
Explanation: User2sid.exe can retrieve a SID from the SAM (Security Accounts Manager) from the local or a remote machine Sid2user.exe can then be used to retrieve the names of all the user accounts and more. These utilities do not exploit a bug but call the functions LookupAccountName and LookupAccountSid respectively. What is more these can be called against a remote machine without providing logon credentials save those needed for a null session connection.
Q6. 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
Q7. What are the different between SSL and S-HTTP?
A. SSL operates at the network layer and S-HTTP operates at the application layer
B. SSL operates at the application layer and S-HTTP operates at the network layer
C. SSL operates at transport layer and S-HTTP operates at the application layer
D. SSL operates at the application layer and S-HTTP operates at the transport layer
Answer: C
Explanation: Whereas SSL is designed to establish a secure connection between two computers, S-HTTP is designed to send individual messages securely. S-HTTP is defined in RFC 2660
Q8. On wireless networks, SSID is used to identify the network. Why are SSID not considered to be a good security mechanism to protect a wireless networks?
A. The SSID is only 32 bits in length.
B. The SSID is transmitted in clear text.
C. The SSID is the same as the MAC address for all vendors.
D. The SSID is to identify a station, not a network.
Answer: B
Explanation: The SSID IS constructed to identify a network, it IS NOT the same as the MAC address and SSID’s consists of a maximum of 32 alphanumeric characters.
Q9. DRAG DROP
Drag the term to match with it’s description
Exhibit:
Answer:
Q10. Peter is a Network Admin. He is concerned that his network is vulnerable to a smurf attack.
What should Peter do to prevent a smurf attack?
Select the best answer.
A. He should disable unicast on all routers
B. Disable multicast on the router
C. Turn off fragmentation on his router
D. Make sure all anti-virus protection is updated on all systems
E. Make sure his router won't take a directed broadcast
Answer: E
Explanation: Unicasts are one-to-one IP transmissions, by disabling this he would disable most network transmissions but still not prevent the smurf attack. Turning of multicast or fragmentation on the router has nothing to do with Peter’s concerns as a smurf attack uses broadcast, not multicast and has nothing to do with fragmentation. Anti-virus protection will not help prevent a smurf attack. A smurf attack is a broadcast from a spoofed source. If directed broadcasts are enabled on the destination all the computers at the destination will respond to the spoofed source, which is really the victim. Disabling directed broadcasts on a router can prevent the attack.
Q11. What sequence of packets is sent during the initial TCP three-way handshake?
A. SYN, URG, ACK
B. FIN, FIN-ACK, ACK
C. SYN, ACK, SYN-ACK
D. SYN, SYN-ACK, ACK
Answer: D
Explanation: This is referred to as a "three way handshake." The "SYN" flags are requests by the TCP stack at one end of a socket to synchronize themselves to the sequence numbering for this new sessions. The ACK flags acknowlege earlier packets in this session. Obviously only the initial packet has no ACK flag, since there are no previous packets to acknowlege. Only the second packet (the first response from a server to a client) has both the SYN and the ACK bits set.
Q12. An attacker runs netcat tool to transfer a secret file between two hosts.
Machine A: netcat -1 –p 1234 < secretfile Machine B: netcat 192.168.3.4 > 1234
He is worried about information being sniffed on the network.
How would the attacker use netcat to encrypt information before transmitting it on the wire?
A. Machine A: netcat -1 –p –s password 1234 < testfile Machine B: netcat <machine A IP> 1234
B. Machine A: netcat -1 –e magickey –p 1234 < testfile Machine B: netcat <machine A IP> 1234
C. Machine A: netcat -1 –p 1234 < testfile –pw password Machine B: netcat <machine A IP> 1234 –pw password
D. Use cryptcat instead of netcat.
Answer: D
Explanation: Cryptcat is the standard netcat enhanced with twofish encryption with ports for WIndows NT, BSD and Linux. Twofish is courtesy of counterpane, and cryptix. A default netcat installation does not contain any cryptography support.
Q13. On wireless networks, a SSID is used to identify the network. Why are SSID not considered to be a good security mechanism to protect a wireless network?
A. The SSID is only 32 bits in length
B. The SSID is transmitted in clear text
C. The SSID is to identify a station not a network
D. The SSID is the same as the MAC address for all vendors
Answer: B
Explanation: The use of SSIDs is a fairly weak form of security, because most access points broadcast the SSID, in clear text, multiple times per second within the body of each beacon frame. A hacker can easily use an 802.11 analysis tool (e.g., AirMagnet, Netstumbler, or AiroPeek) to identify the SSID.
Q14. If you come across a sheepdip machaine at your client site, what would you infer?
A. A sheepdip computer is used only for virus checking.
B. A sheepdip computer is another name for honeypop.
C. A sheepdip coordinates several honeypots.
D. A sheepdip computer defers a denial of service attack.
Answer: A
Explanation: Also known as a footbath, a sheepdip is the process of checking physical media, such as floppy disks or CD-ROMs, for viruses before they are used in a computer. Typically, a computer that sheepdips is used only for that process and nothing else and is isolated from the other computers, meaning it is not connected to the network. Most sheepdips use at least two different antivirus programs in order to increase effectiveness.
Q15. You want to use netcat to generate huge amount of useless network data continuously for various performance testing between 2 hosts.
Which of the following commands accomplish this?
A. Machine A #yes AAAAAAAAAAAAAAAAAAAAAA | nc –v –v –l –p 2222 > /dev/null Machine B #yes BBBBBBBBBBBBBBBBBBBBBB | nc machinea 2222 > /dev/null
B. Machine A cat somefile | nc –v –v –l –p 2222 Machine B cat somefile | nc othermachine 2222 C. Machine A nc –l –p 1234 | uncompress –c | tar xvfp Machine B tar cfp - /some/dir | compress –c | nc –w 3 machinea 1234
D. Machine A while true : do nc –v –l –s –p 6000 machineb 2 Machine B while true ; do nc –v –l –s –p 6000 machinea 2 done
Answer: A
Explanation: Machine A is setting up a listener on port 2222 using the nc command and then having the letter A sent an infinite amount of times, when yes is used to send data yes NEVER stops until it recieves a break signal from the terminal (Control+C), on the client end (machine B), nc is being used as a client to connect to machine A, sending the letter B and infinite amount of times, while both clients have established a TCP connection each client is infinitely sending data to each other, this process will run FOREVER until it has been stopped by an administrator or the attacker.