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Q441. A Trojan horse is a destructive program that masquerades as a benign application. The software initially appears to perform a desirable function for the user prior to installation and/or execution, but in addition to the expected function steals information or harms the system.
The challenge for an attacker is to send a convincing file attachment to the victim, which gets easily executed on the victim machine without raising any suspicion. Today's end users are quite knowledgeable about malwares and viruses. Instead of sending games and fun executables, Hackers today are quite successful in spreading the Trojans using Rogue security software.
What is Rogue security software?
A. A flash file extension to Firefox that gets automatically installed when a victim visits rogue software disabling websites
B. A Fake AV program that claims to rid a computer of malware, but instead installs spyware or other malware onto the computer. This kind of software is known as rogue security software.
C. A Fake AV program that claims to rid a computer of malware, but instead installs spyware or other malware onto the computer. This kind of software is known as rogue security software.
D. A Fake AV program that claims to rid a computer of malware, but instead installs spyware or other malware onto the computer. This kind of software is known as rogue security software.
E. Rogue security software is based on social engineering technique in which the attackers lures victim to visit spear phishing websites
F. This software disables firewalls and establishes reverse connecting tunnel between the victim's machine and that of the attacker
Answer: BCD
Q442. What is the proper response for a NULL scan if the port is open?
A. SYN
B. ACK
C. FIN
D. PSH
E. RST
F. No response
Answer: F
Explanation: A NULL scan will have no response if the port is open.
Q443. _____ is the process of converting something from one representation to the simplest form. It deals with the way in which systems convert data from one form to another.
A. Canonicalization
B. Character Mapping
C. Character Encoding
D. UCS transformation formats
Answer: A
Explanation: Canonicalization (abbreviated c14n) is the process of converting data that has more than one possible representation into a "standard" canonical representation. This can be done to compare different representations for equivalence, to count the number of distinct data structures (e.g., in combinatorics), to improve the efficiency of various algorithms by eliminating repeated calculations, or to make it possible to impose a meaningful sorting order.
Q444. What port number is used by LDAP protocol?
A. 110
B. 389
C. 445
D. 464
Answer: B
Explanation: Active Directory and Exchange use LDAP via TCP port 389 for clients.
Latest 312-50 practice exam:
Q445. You have successfully brute forced basic authentication configured on a Web Server using Brutus hacking tool. The username/password is “Admin” and “Bettlemani@”. You logon to the system using the brute forced password and plant backdoors and rootkits.
After downloading various sensitive documents from the compromised machine, you proceed to clear the log files to hide your trace..
Which event log located at C:Windowssystem32config contains the trace of your brute force attempts?
A. AppEvent.Evt
B. SecEvent.Evt
C. SysEvent.Evt
D. WinEvent.Evt
Answer: B
Explanation: The Security Event log (SecEvent.Evt) will contain all the failed logins against the system.
Topic 6, Trojans and Backdoors
Q446. If you perform a port scan with a TCP ACK packet, what should an OPEN port return?
A. RST
B. No Reply
C. SYN/ACK
D. FIN
Answer: A
Explanation: Open ports return RST to an ACK scan.
Q447. Which of the following countermeasure can specifically protect against both the MAC Flood and MAC Spoofing attacks?
A. Port Security
B. Switch Mapping
C. Port Reconfiguring
D. Multiple Recognition
Answer: A
Explanation: With Port Security the switch will keep track of which ports are allowed to send traffic on a port.
Q448. How does a denial-of-service attack work?
A. A hacker tries to decipher a password by using a system, which subsequently crashes the network
B. A hacker attempts to imitate a legitimate user by confusing a computer or even another person
C. A hacker prevents a legitimate user (or group of users) from accessing a service
D. A hacker uses every character, word, or letter he or she can think of to defeat authentication
Answer: C
Explanation: In computer security, a denial-of-service attack (DoS attack) is an attempt to make a computer resource unavailable to its intended users. Typically the targets are high-profile web servers, and the attack attempts to make the hosted web pages unavailable on the Internet. It is a computer crime that violates the Internet proper use policy as indicated by the Internet Architecture Board (IAB).
Q449. Jim’s organization has just completed a major Linux roll out and now all of the organization’s systems are running the Linux 2.5 kernel. The roll out expenses has posed constraints on purchasing other essential security equipment and software. The organization requires an option to control network traffic and also perform stateful inspection of traffic going into and out of the DMZ.
Which built-in functionality of Linux can achieve this?
A. IP Tables
B. IP Chains
C. IP Sniffer
D. IP ICMP
Answer: A
Explanation: iptables is a user space application program that allows a system administrator to configure the netfilter tables, chains, and rules (described above). Because iptables requires elevated privileges to operate, it must be executed by user root, otherwise it fails to function. On most Linux systems, iptables is installed as /sbin/iptables. IP Tables performs stateful inspection while the older IP Chains only performs stateless inspection.