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Q401. After an attacker has successfully compromised a remote computer, what would be one of the last steps that would be taken to ensure that the compromise is not traced back to the source of the problem? 

A. Install pactehs 

B. Setup a backdoor 

C. Cover your tracks 

D. Install a zombie for DDOS 

Answer: C 

Explanation: As a hacker you don’t want to leave any traces that could lead back to you. 


Q402. Lauren is performing a network audit for her entire company. The entire network is comprised of around 500 computers. Lauren starts an ICMP ping sweep by sending one IP packet to the broadcast address of the network, but only receives responses from around five hosts. Why did this ping sweep only produce a few responses? 

A. Only Windows systems will reply to this scan. 

B. A switched network will not respond to packets sent to the broadcast address. 

C. Only Linux and Unix-like (Non-Windows) systems will reply to this scan. 

D. Only servers will reply to this scan. 

Answer: C


Q403. Steven is a senior security analyst for a state agency in Tulsa, Oklahoma. His agency is currently undergoing a mandated security audit by an outside consulting firm. The consulting firm is halfway through the audit and is preparing to perform the actual penetration testing against the agency’s network. The firm first sets up a sniffer on the agency’s wired network to capture a reasonable amount of traffic to analyze later. This takes approximately 2 hours to obtain 10 GB of data. The consulting firm then sets up a sniffer on the agency’s wireless network to capture the same amount of traffic. This capture only takes about 30 minutes to get 10 GB of data. 

Why did capturing of traffic take much less time on the wireless network? 

A. Because wireless access points act like hubs on a network 

B. Because all traffic is clear text, even when encrypted 

C. Because wireless traffic uses only UDP which is easier to sniff 

D. Because wireless networks can’t enable encryption 

Answer: A

Explanation: You can not have directed radio transfers over a WLAN. Every packet will be broadcasted as far as possible with no concerns about who might hear it. 


Q404. Curt has successfully compromised a web server sitting behind a firewall using a vulnerability in the web server program. He would now like to install a backdoor program but knows that all ports are not open inbound on the firewall. Which port in the list below will most likely be open and allowed to reach the server that Curt has just compromised? (Select the Best Answer) 

A. 53 

B. 25 

C. 110 

D. 69 

Answer: A


Q405. John runs a Web Server, IDS and firewall on his network. Recently his Web Server has been under constant hacking attacks. He looks up the IDS log files and sees no Intrusion attempts but the web server constantly locks up and needs rebooting due to various brute force and buffer overflow attacks but still the IDS alerts no intrusion whatsoever. 

John become suspicious and views he firewall logs and he notices huge SSL connections constantly hitting web server. 

Hackers have been using the encrypted HTTPS protocol to send exploits to the web server and that was the reason the IDS did not detect the intrusions. 

How would Jon protect his network form these types of attacks? 

A. Install a proxy server and terminate SSL at the proxy 

B. Install a hardware SSL “accelerator” and terminate SSL at this layer 

C. Enable the IDS to filter encrypted HTTPS traffic 

D. Enable the firewall to filter encrypted HTTPS traffic 

Answer: AB

Explanation: By terminating the SSL connection at a proxy or a SSL accelerator and then use clear text the distance between the proxy/accelerator and the server, you make it possible for the IDS to scan the traffic. 

Topic 20, Buffer Overflows 


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Q406. This kind of password cracking method uses word lists in combination with numbers and special characters: 

A. Hybrid 

B. Linear 

C. Symmetric 

D. Brute Force 

Answer: A

Explanation: A Hybrid (or Hybrid Dictionary) Attack uses a word list that it modifies slightly to find passwords that are almost from a dictionary (like St0pid) 


Q407. Study the snort rule given below: 

From the options below, choose the exploit against which this rule applies. 

A. WebDav 

B. SQL Slammer 

C. MS Blaster 

D. MyDoom 

Answer: C

Explanation: MS Blaster scans the Internet for computers that are vulnerable to its attack. Once found, it tries to enter the system through the port 135 to create a buffer overflow. TCP ports 139 and 445 may also provide attack vectors. 


Q408. Which of the following tools are used for enumeration? (Choose three.) 

A. SolarWinds 

B. USER2SID 

C. Cheops 

D. SID2USER 

E. DumpSec 

Answer: BDE

Explanation: USER2SID, SID2USER, and DumpSec are three of the tools used for system enumeration. Others are tools such as NAT and Enum. Knowing which tools are used in each step of the hacking methodology is an important goal of the CEH exam. You should spend a portion of your time preparing for the test practicing with the tools and learning to understand their output. 


Q409. Eric has discovered a fantastic package of tools named Dsniff on the Internet. He has learnt to use these tools in his lab and is now ready for real world exploitation. He was able to effectively intercept communications between the two entities and establish credentials with both sides of the connections. The two remote ends of the communication never notice that Eric is relaying the information between the two. 

What would you call this attack? 

A. Interceptor 

B. Man-in-the-middle 

C. ARP Proxy 

D. Poisoning Attack 

Answer: B

Explanation: A man-in-the-middle attack (MITM) is an attack in which an attacker is able to read, insert and modify at will, messages between two parties without either party knowing that the link between them has been compromised. 


Q410. What do Trinoo, TFN2k, WinTrinoo, T-Sight, and Stracheldraht have in common? 

A. All are hacking tools developed by the legion of doom 

B. All are tools that can be used not only by hackers, but also security personnel 

C. All are DDOS tools 

D. All are tools that are only effective against Windows 

E. All are tools that are only effective against Linux 

Answer: C 

Explanation: All are DDOS tools.