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2021 Mar 312-50 pdf exam
Q11. What will the following command produce on a website's login page if executed successfully? SELECT email, passwd, login_id, full_name FROM members WHERE email = 'someone@somewhere.com' DROP TABLE members; --'
A. This code will insert the someone@somewhere.com email address into the members table.
B. This command will delete the entire members table.
C. It retrieves the password for the first user in the members table.
D. This command will not produce anything since the syntax is incorrect.
Answer: B
Q12. You establish a new Web browser connection to Google. Since a 3-way handshake is required for any TCP connection, the following actions will take place.
-DNS query is sent to the DNS server to resolve www.google.com
-DNS server replies with the IP address for Google?
-SYN packet is sent to Google.
-Google sends back a SYN/ACK packet
-Your computer completes the handshake by sending an ACK
-The connection is established and the transfer of data commences
Which of the following packets represent completion of the 3-way handshake?
A. 4th packet
B. 3rdpacket
C. 6th packet
D. 5th packet
Answer: D
Q13. 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.
Q14. Ursula is a college student at a University in Amsterdam. Ursula originally went to college to study engineering but later changed to marine biology after spending a month at sea with her friends. These friends frequently go out to sea to follow and harass fishing fleets that illegally fish in foreign waters. Ursula eventually wants to put companies practicing illegal fishing out of business. Ursula decides to hack into the parent company's computers and destroy critical data knowing fully well that, if caught, she probably would be sent to jail for a very long time. What would Ursula be considered?
A. Ursula would be considered a gray hat since she is performing an act against illegal activities.
B. She would be considered a suicide hacker.
C. She would be called a cracker.
D. Ursula would be considered a black hat.
Answer: B
Q15. Maintaining a secure Web server requires constant effort, resources, and vigilance from an organization. Securely administering a Web server on a daily basis is an essential aspect of Web server security.
Maintaining the security of a Web server will usually involve the following steps:
1. Configuring, protecting, and analyzing log files
2. Backing up critical information frequently
3. Maintaining a protected authoritative copy of the organization's Web content
4. Establishing and following procedures for recovering from compromise
5. Testing and applying patches in a timely manner
6. Testing security periodically.
In which step would you engage a forensic investigator?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Answer: D
Renovate 312-50 vce:
Q16. Which definition among those given below best describes a covert channel?
A. A server program using a port that is not well known.
B. Making use of a protocol in a way it is not intended to be used.
C. It is the multiplexing taking place on a communication link.
D. It is one of the weak channels used by WEP which makes it insecure.
Answer: B
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.
Q17. The programmers on your team are analyzing the free, open source software being used to run FTP services on a server. They notice that there is an excessive number of fgets() and gets() on the source code. These C++ functions do not check bounds.
What kind of attack is this program susceptible to?
A. Buffer of Overflow
B. Denial of Service
C. Shatter Attack
D. Password Attack
Answer: A
Explanation: C users must avoid using dangerous functions that do not check bounds unless they've ensured that the bounds will never get exceeded. A buffer overflow occurs when you write a set of values (usually a string of characters) into a fixed length buffer and write at least one value outside that buffer's boundaries (usually past its end). A buffer overflow can occur when reading input from the user into a buffer, but it can also occur during other kinds of processing in a program.
Q18. You are the security administrator of Jaco Banking Systems located in Boston. You are setting up e-banking website (http://www.ejacobank.com) authentication system. Instead of issuing banking customer with a single password, you give them a printed list of 100 unique passwords. Each time the customer needs to log into the e-banking system website, the customer enters the next password on the list. If someone sees them type the password using shoulder surfing, MiTM or keyloggers, then no damage is done because the password will not be accepted a second time. Once the list of 100 passwords is almost finished, the system automatically sends out a new password list by encrypted e-mail to the customer.
You are confident that this security implementation will protect the customer from password abuse.
Two months later, a group of hackers called "HackJihad" found a way to access the one-time password list issued to customers of Jaco Banking Systems. The hackers set up a fake website (http://www.e-jacobank.com) and used phishing attacks to direct ignorant customers to it. The fake website asked users for their e-banking username and password, and the next unused entry from their one-time password sheet. The hackers collected 200 customer's username/passwords this way. They transferred money from the customer's bank account to various offshore accounts.
Your decision of password policy implementation has cost the bank with USD 925,000 to hackers. You immediately shut down the e-banking website while figuring out the next best security solution
What effective security solution will you recommend in this case?
A. Implement Biometrics based password authentication system. Record the customers face image to the authentication database
B. Configure your firewall to block logon attempts of more than three wrong tries
C. Enable a complex password policy of 20 characters and ask the user to change the password immediately after they logon and do not store password histories
D. Implement RSA SecureID based authentication system
Answer: D
Q19. While examining a log report you find out that an intrusion has been attempted by a machine whose IP address is displayed as 0xde.0xad.0xbe.0xef. It looks to you like a hexadecimal number. You perform a ping 0xde.0xad.0xbe.0xef. Which of the following IP addresses will respond to the ping and hence will likely be responsible for the the intrusion ?
A. 192.10.25.9
B. 10.0.3.4
C. 203.20.4.5
D. 222.273.290.239
E. 222.173.290.239
Answer: E
Explanation: Convert the hex number to binary and then to decimal.
0xde.0xad.0xbe.0xef translates to 222.173.190.239 and not 222.273.290.239
0xef =
15*1 = 15
14*16 = 224
= 239
0xbe = 14*1 = 14 11*16 = 176
= 190
0xad = 13*1 = 13 10*16 = 160
= 173
0xde = 14*1 = 14 13*16 = 208
= 222
Q20. Which of the following best describes session key creation in SSL?
A. It is created by the server after verifying theuser's identity
B. It is created by the server upon connection by the client
C. It is created by the client from the server's public key
D. It is created by the client after verifying the server's identity
Answer: D
Explanation: An SSL session always begins with an exchange of messages called the SSL handshake. The handshake allows the server to authenticate itself to the client using public-key techniques, then allows the client and the server to cooperate in the creation of symmetric keys used for rapid encryption, decryption, and tamper detection during the session that follows. Optionally, the handshake also allows the client to authenticate itself to the server.