The Up to date Guide To 312-50 training materials Jul 2021

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Q291. On wireless networks, a SSID is used to identify the network. Why are SSID not considered to be a good security mechanism to protect a wireless network? 

A. The SSID is only 32 bits in length 

B. The SSID is transmitted in clear text 

C. The SSID is to identify a station not a network 

D. The SSID is the same as the MAC address for all vendors 

Answer: B

Explanation: The use of SSIDs is a fairly weak form of security, because most access points broadcast the SSID, in clear text, multiple times per second within the body of each beacon frame. A hacker can easily use an 802.11 analysis tool (e.g., AirMagnet, Netstumbler, or AiroPeek) to identify the SSID. 

Q292. What ICMP message types are used by the ping command? 

A. Timestamp request (13) and timestamp reply (14) 

B. Echo request (8) and Echo reply (0) 

C. Echo request (0) and Echo reply (1) 

D. Ping request (1) and Ping reply (2) 

Answer: B

Explanation: ICMP Type 0 = Echo Reply, ICMP Type 8 = Echo 

Q293. In what stage of Virus life does a stealth virus gets activated with the user performing certain actions such as running an infected program? 

A. Design 

B. Elimination 

C. Incorporation 

D. Replication 

E. Launch 

F. Detection 

Answer: E

Q294. ou are footprinting the domain using the Google Search Engine. You would like to determine what sites link to www.xsecurity .com at the first level of revelance. 

Which of the following operator in Google search will you use to achieve this? 

A. Link: 

B. serch? 



Answer: A

Explanation: The query [link:] will list webpages that have links to the specified webpage. For instance, [] will list webpages that have links pointing to the Google homepage. Note there can be no space between the "link:" and the web page url. 

Topic 3, Scanning 

35. Doug is conducting a port scan of a target network. He knows that his client target network has a web server and that there is a mail server also which is up and running. Doug has been sweeping the network but has not been able to elicit any response from the remote target. Which of the following could be the most likely cause behind this lack of response? Select 4. 

A. UDP is filtered by a gateway 

B. The packet TTL value is too low and cannot reach the target 

C. The host might be down 

D. The destination network might be down 

E. The TCP windows size does not match 

F. ICMP is filtered by a gateway 

Answer: ABCF

Explanation: If the destination host or the destination network is down there is no way to get an answer and if TTL (Time To Live) is set too low the UDP packets will “die” before reaching the host because of too many hops between the scanning computer and the target. The TCP receive window size is the amount of received data (in bytes) that can be buffered during a connection. The sending host can send only that amount of data before it must wait for an acknowledgment and window update from the receiving host and ICMP is mainly used for echo requests and not in port scans. 

Q295. If an attacker's computer sends an IPID of 31400 to a zombie (Idle Scanning) computer on an open port, what will be the response? 

A. 31400 

B. 31402 

C. The zombie will not send a response 

D. 31401 

Answer: D

Q296. The terrorist organizations are increasingly blocking all traffic from North America or from Internet Protocol addresses that point to users who rely on the English Language. 

Hackers sometimes set a number of criteria for accessing their website. This information is shared among the co-hackers. For example if you are using a machine with the Linux Operating System and the Netscape browser then you will have access to their website in a convert way. When federal investigators using PCs running windows and using Internet Explorer visited the hacker’s shared site, the hacker’s system immediately mounted a distributed denial-of-service attack against the federal system. 

Companies today are engaging in tracking competitor’s through reverse IP address lookup sites like, which provide an IP address’s domain. When the competitor visits the companies website they are directed to a products page without discount and prices are marked higher for their product. When normal users visit the website they are directed to a page with full-blown product details along with attractive discounts. This is based on IP-based blocking, where certain addresses are barred from accessing a site. 

What is this masking technique called? 

A. Website Cloaking 

B. Website Filtering 

C. IP Access Blockade 

D. Mirrored WebSite 

Answer: A

Explanation: Website Cloaking travels under a variety of alias including Stealth, Stealth scripts, IP delivery, Food Script, and Phantom page technology. It’s hot- due to its ability to manipulate those elusive top-ranking results from spider search engines. 

Q297. Harold just got home from working at Henderson LLC where he works as an IT technician. He was able to get off early because they were not too busy. When he walks into his home office, he notices his teenage daughter on the computer, apparently chatting with someone online. As soon as she hears Harold enter the room, she closes all her windows and tries to act like she was playing a game. When Harold asks her what she was doing, she acts very nervous and does not give him a straight answer. Harold is very concerned because he does not want his daughter to fall victim to online predators and the sort. Harold doesn't necessarily want to install any programs that will restrict the sites his daughter goes to, because he doesn't want to alert her to his trying to figure out what she is doing. Harold wants to use some kind of program that will track her activities online, and send Harold an email of her activity once a day so he can see what she has been up to. What kind of software could Harold use to accomplish this? 

A. Install hardware Keylogger on her computer 

B. Install screen capturing Spyware on her computer 

C. Enable Remote Desktop on her computer 

D. Install VNC on her computer 

Answer: B

Q298. Lee is using Wireshark to log traffic on his network. He notices a number of packets being directed to an internal IP from an outside IP where the packets are ICMP and their size is around 65,536 bytes. What is Lee seeing here? 

A. Lee is seeing activity indicative of a Smurf attack. 

B. Most likely, the ICMP packets are being sent in this manner to attempt IP spoofing. 

C. Lee is seeing a Ping of death attack. 

D. This is not unusual traffic, ICMP packets can be of any size. 

Answer: C

Q299. Which of the following Nmap commands would be used to perform a stack fingerprinting? 

A. Nmap -O -p80 <host(s.> 

B. Nmap -hU -Q<host(s.> 

C. Nmap -sT -p <host(s.> 

D. Nmap -u -o -w2 <host> 

E. Nmap -sS -0p target 

Answer: A

Explanation: This option activates remote host identification via TCP/IP fingerprinting. In other words, it uses a bunch of techniques to detect subtlety in the underlying operating system network stack of the computers you are scanning. It uses this information to create a "fingerprint" which it compares with its database of known OS fingerprints (the nmap-os-fingerprints file. to decide what type of system you are scanning. 

Q300. In this attack, a victim receives an e-mail claiming from PayPal stating that their account has been disabled and confirmation is required before activation. The attackers then scam to collect not one but two credit card numbers, ATM PIN number and other personal details. 

Ignorant users usually fall prey to this scam. Which of the following statement is incorrect related to this attack? 

A. Do not reply to email messages or popup ads asking for personal or financial information 

B. Do not trust telephone numbers in e-mails or popup ads 

C. Review credit card and bank account statements regularly 

D. Antivirus, anti-spyware, and firewall software can very easily detect these type of attacks 

E. Do not send credit card numbers, and personal or financial information via e-mail 

Answer: A