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Q311. How would you describe a simple yet very effective mechanism for sending and receiving unauthorized information or data between machines without alerting any firewalls and IDS's on a network?
A. Covert Channel
B. Crafted Channel
C. Bounce Channel
D. Deceptive Channel
Answer: A
Explanation: A covert channel is described as: "any communication channel that can be exploited by a process to transfer information in a manner that violates the systems security policy."
Essentially, it is a method of communication that is not part of an actual computer system design, but can be used to transfer information to users or system processes that normally would not be allowed access to the information.
Q312. If a competitor wants to cause damage to your organization, steal critical secrets, or put you out of business, they just have to find a job opening, prepare someone to pass the interview, have that person hired, and they will be in the organization.
How would you prevent such type of attacks?
A. It is impossible to block these attacks
B. Hire the people through third-party job agencies who will vet them for you
C. Conduct thorough background checks before you engage them
D. Investigate their social networking profiles
Answer: C
Q313. A POP3 client contacts the POP3 server:
A. To send mail
B. To receive mail
C. to send and receive mail
D. to get the address to send mail to
E. initiate a UDP SMTP connection to read mail
Answer: B
Explanation: POP is used to receive e-mail.SMTP is used to send e-mail.
Q314. In an attempt to secure his wireless network, Bob turns off broadcasting of the SSID. He concludes that since his access points require the client computer to have the proper SSID, it would prevent others from connecting to the wireless network. Unfortunately unauthorized users are still able to connect to the wireless network.
Why do you think this is possible?
A. Bob forgot to turn off DHCP.
B. All access points are shipped with a default SSID.
C. The SSID is still sent inside both client and AP packets.
D. Bob’s solution only works in ad-hoc mode.
Answer: B
Explanation: All access points are shipped with a default SSID unique to that manufacturer, for example 3com uses the default ssid comcomcom.
Q315. How do you defend against ARP Poisoning attack? (Select 2 answers) A. Enable DHCP Snooping Binding Table
B. Restrict ARP Duplicates
C. Enable Dynamic ARP Inspection
D. Enable MAC snooping Table
Answer: AC
Q316. The Slammer Worm exploits a stack-based overflow that occurs in a DLL implementing the Resolution Service.
Which of the following Database Server was targeted by the slammer worm?
A. Oracle
B. MSSQL
C. MySQL
D. Sybase
E. DB2
Answer: B
Explanation: W32.Slammer is a memory resident worm that propagates via UDP Port 1434 and exploits a vulnerability in SQL Server 2000 systems and systems with MSDE 2000 that have not applied the patch released by Microsoft Security Bulletin MS02-039.
Q317. Sniffing is considered an active attack.
A. True
B. False
Answer: B
Explanation: Sniffing is considered a passive attack.
Q318. Which of the following Nmap commands would be used to perform a UDP scan of the lower 1024 ports?
A. Nmap -h -U
B. Nmap -hU <host(s.>
C. Nmap -sU -p 1-1024 <host(s.>
D. Nmap -u -v -w2 <host> 1-1024
E. Nmap -sS -O target/1024
Answer: C
Explanation: Nmap -sU -p 1-1024 <hosts.> is the proper syntax. Learning Nmap and its switches are critical for successful completion of the CEH exam.
Q319. Jimmy, an attacker, knows that he can take advantage of poorly designed input validation routines to create or alter SQL commands to gain access to private data or execute commands in the database. What technique does Jimmy use to compromise a database?
A. Jimmy can submit user input that executes an operating system command to compromise a target system
B. Jimmy can utilize this particular database threat that is an SQL injection technique to penetrate a target system
C. Jimmy can utilize an incorrect configuration that leads to access with higher-than-expected privilege of the database
D. Jimmy can gain control of system to flood the target system with requests, preventing legitimate users from gaining access
Answer: B
Explanation: SQL injection is a security vulnerability that occurs in the database layer of an application. The vulnerability is present when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and thereby unexpectedly executed. It is in fact an instance of a more general class of vulnerabilities that can occur whenever one programming or scripting language is embedded inside another.
Q320. DRAG DROP
Drag the application to match with its correct description.
Exhibit:
Answer: