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Q111. In the context of Windows Security, what is a 'null' user?
A. A user that has no skills
B. An account that has been suspended by the admin
C. A pseudo account that has no username and password
D. A pseudo account that was created for security administration purpose
Answer: C
Explanation: NULL sessions take advantage of “features” in the SMB (Server Message Block) protocol that exist primarily for trust relationships. You can establish a NULL session with a Windows host by logging on with a NULL user name and password. Using these NULL connections allows you to gather the following information from the host:* List of users and groups
* List of machines * List of shares * Users and host SID' (Security Identifiers)
NULL sessions exist in windows networking to allow: * Trusted domains to enumerate resources *
Computers outside the domain to authenticate and enumerate users * The SYSTEM account to authenticate and enumerate resources
NetBIOS NULL sessions are enabled by default in Windows NT and 2000. Windows XP and 2003 will allow anonymous enumeration of shares, but not SAM accounts.
Q112. Which of the following is one of the key features found in a worm but not seen in a virus?
A. The payload is very small, usually below 800 bytes.
B. It is self replicating without need for user intervention.
C. It does not have the ability to propagate on its own.
D. All of them cannot be detected by virus scanners.
Answer: B
Explanation: A worm is similar to a virus by its design, and is considered to be a sub-class of a virus. Worms spread from computer to computer, but unlike a virus, it has the capability to travel without any help from a person. A worm takes advantage of file or information transport features on your system, which allows it to travel unaided.
Q113. What type of port scan is represented here.
A. Stealth Scan
B. Full Scan
C. XMAS Scan
D. FIN Scan
Answer: A
Q114. Bill is a security analyst for his company. All the switches used in the company's office are Cisco switches. Bill wants to make sure all switches are safe from ARP poisoning. How can Bill accomplish this?
A. Bill can use the command: ip dhcp snooping.
B. Bill can use the command: no ip snoop.
C. Bill could use the command: ip arp no flood.
D. He could use the command: ip arp no snoop.
Answer: A
Q115. Which of the following is NOT a valid NetWare access level?
A. Not Logged in
B. Logged in
C. Console Access
D. Administrator
Answer: D
Explanation: Administrator is an account not a access level.
Q116. Which is the Novell Netware Packet signature level used to sign all packets ?
A. 0
B. 1
C. 2
D. 3
Answer: D
Explanation: Level 0 is no signature, Level 3 is communication using signature only.
Q117. What port number is used by Kerberos protocol?
A. 44
B. 88
C. 419
D. 487
Answer: B
Explanation: Kerberos traffic uses UDP/TCP protocol source and destination port 88.
Q118. Which of the following is not an effective countermeasure against replay attacks?
A. Digital signatures
B. Time Stamps
C. System identification
D. Sequence numbers
Answer: C
Explanation: A replay attack is a form of network attack in which a valid data transmission is maliciously or fraudulently repeated or delayed. Effective countermeasures should be anything that makes it hard to delay or replay the packet (time stamps and sequence numbers) or anything that prove the package is received as it was sent from the original sender (digital signature)
Q119. 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.
Q120. What do you conclude from the nmap results below?
Staring nmap V. 3.10ALPHA0 (www.insecure.org/map/)
(The 1592 ports scanned but not shown below are in state: closed)
PortStateService 21/tcpopenftp 25/tcpopensmtp 80/tcpopenhttp 443/tcpopenhttps
Remote operating system guess: Too many signatures match the reliability guess the OS. Nmap run completed – 1 IP address (1 host up) scanned in 91.66 seconds
A. The system is a Windows Domain Controller.
B. The system is not firewalled.
C. The system is not running Linux or Solaris.
D. The system is not properly patched.
Answer: B
Explanation: There is no reports of any ports being filtered.
