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2021 Oct 312-50v8 test engine

Q281. 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 intrusion? 

A. 192.10.25.9 

B. 10.0.3.4 

C. 203.20.4.5 

D. 222.273.290.239 

Answer: D 


Q282. Which.type of access control is used on a router or firewall to limit network activity? 

A. Mandatory 

B. Discretionary 

C. Rule-based 

D. Role-based 

Answer: C 


Q283. The following script shows a simple SQL injection. The script builds an SQL query by concatenating hard-coded strings together with a string entered by the user: 

The user is prompted to enter the name of a city on a Web form. If she enters Chicago, the query assembled by the script looks similar to the following: 

SELECT * FROM OrdersTable WHERE ShipCity = 'Chicago' 

How will you delete the OrdersTable from the database using SQL Injection? 

A. Chicago' drop table OrdersTable --

B. Delete table'blah' OrdersTable --

C. EXEC; SELECT * OrdersTable > DROP --

D. cmdshell' 'del c:\sql\mydb\OrdersTable' // 

Answer: A 


Q284. An Evil Cracker is attempting to penetrate your private network security. To do this, he must not be seen by your IDS, as it may take action to stop him. What tool might he use to bypass the IDS? 

Select the best answer. 

A. Firewalk 

B. Manhunt 

C. Fragrouter 

D. Fragids 

Answer: C 


Q285. Botnets are networks of compromised computers that are controlled remotely and surreptitiously by one or more cyber criminals. How do cyber criminals infect a victim's computer with bots? (Select 4 answers) 

A. Attackers physically visit every victim's computer to infect them with malicious software 

B. Home computers that have security vulnerabilities are prime targets for botnets 

C. Spammers scan the Internet looking for computers that are unprotected and use these "open-doors" to install malicious software 

D. Attackers use phishing or spam emails that contain links or attachments 

E. Attackers use websites to host the bots utilizing Web Browser vulnerabilities 

Answer: BCDE 


Most recent 312-50v8 free exam:

Q286. Paul has just finished setting up his wireless network. He has enabled numerous security features such as changing the default SSID, enabling WPA encryption, and enabling MAC filtering on his wireless router. Paul notices that when he uses his wireless connection, the speed is sometimes 54 Mbps and sometimes it is only 24Mbps or less. Paul connects to his wireless router's management utility and notices that a machine with an unfamiliar name is connected through his wireless connection. Paul checks the router's logs and notices that the unfamiliar machine has the same MAC address as his laptop. What is Paul seeing here? 

A. MAC spoofing 

B. Macof 

C. ARP spoofing 

D. DNS spoofing 

Answer: A 


Q287. Destination unreachable administratively prohibited messages can inform the hacker to what? 

A. That a circuit level proxy has been installed and is filtering traffic 

B. That his/her scans are being blocked by a honeypot or jail 

C. That the packets are being malformed by the scanning software 

D. That a router or other packet-filtering device is blocking traffic 

E. That the network is functioning normally 

Answer: D 


Q288. You have initiated an active operating system fingerprinting attempt with nmap against a target system: 

What operating system is the target host running based on the open ports shown above? 

A. Windows XP 

B. Windows 98 SE 

C. Windows NT4 Server 

D. Windows 2000 Server 

Answer: D 


Q289. One way to defeat a multi-level security solution is to leak data via 

A. a bypass regulator. 

B. steganography. 

C. a covert channel. 

D. asymmetric routing. 

Answer: C 


Q290. Exhibit: Given the following extract from the snort log on a honeypot, what service is being exploited? : 

A. FTP 

B. SSH 

C. Telnet 

D. SMTP 

Answer: A