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312-50v12 Exam Dumps - ECCouncil CEH v12 Questions and Answers

Question # 139

Susan has attached to her company's network. She has managed to synchronize her boss's sessions with that of the file server. She then intercepted his traffic destined for the server, changed it the way she wanted to and then placed it on the server in his home directory.

What kind of attack is Susan carrying on?

Options:

A.

A sniffing attack

B.

A spoofing attack

C.

A man in the middle attack

D.

A denial of service attack

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Question # 140

An attacker, using a rogue wireless AP, performed an MITM attack and injected an HTML code to embed a malicious applet in all HTTP connections.

When users accessed any page, the applet ran and exploited many machines. Which one of the following tools the hacker probably used to inject HTML code?

Options:

A.

Wireshark

B.

Ettercap

C.

Aircrack-ng

D.

Tcpdump

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Question # 141

Eve is spending her day scanning the library computers. She notices that Alice is using a computer whose port 445 is active and listening. Eve uses the ENUM tool to enumerate Alice machine. From the command prompt, she types the following command.

What is Eve trying to do?

Options:

A.

Eve is trying to connect as a user with Administrator privileges

B.

Eve is trying to enumerate all users with Administrative privileges

C.

Eve is trying to carry out a password crack for user Administrator

D.

Eve is trying to escalate privilege of the null user to that of Administrator

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Question # 142

A zone file consists of which of the following Resource Records (RRs)?

Options:

A.

DNS, NS, AXFR, and MX records

B.

DNS, NS, PTR, and MX records

C.

SOA, NS, AXFR, and MX records

D.

SOA, NS, A, and MX records

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Question # 143

What is one of the advantages of using both symmetric and asymmetric cryptography in SSL/TLS?

Options:

A.

Supporting both types of algorithms allows less-powerful devices such as mobile phones to use symmetric encryption instead.

B.

Symmetric algorithms such as AES provide a failsafe when asymmetric methods fail.

C.

Symmetric encryption allows the server to security transmit the session keys out-of-band.

D.

Asymmetric cryptography is computationally expensive in comparison. However, it is well-suited to securely negotiate keys for use with symmetric cryptography.

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Question # 144

Null sessions are un-authenticated connections (not using a username or password.) to an NT or 2000 system. Which TCP and UDP ports must you filter to check null sessions on your network?

Options:

A.

137 and 139

B.

137 and 443

C.

139 and 443

D.

139 and 445

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Question # 145

Peter extracts the SIDs list from Windows 2000 Server machine using the hacking tool "SIDExtractor". Here is the output of the SIDs:

From the above list identify the user account with System Administrator privileges.

Options:

A.

John

B.

Rebecca

C.

Sheela

D.

Shawn

E.

Somia

F.

Chang

G.

Micah

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Question # 146

Study the following log extract and identify the attack.

Options:

A.

Hexcode Attack

B.

Cross Site Scripting

C.

Multiple Domain Traversal Attack

D.

Unicode Directory Traversal Attack

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Question # 147

Which of the following programs is usually targeted at Microsoft Office products?

Options:

A.

Polymorphic virus

B.

Multipart virus

C.

Macro virus

D.

Stealth virus

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Question # 148

MX record priority increases as the number increases. (True/False.)

Options:

A.

True

B.

False

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Question # 149

Study the snort rule given below:

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

Options:

A.

WebDav

B.

SQL Slammer

C.

MS Blaster

D.

MyDoom

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Question # 150

An attacker has installed a RAT on a host. The attacker wants to ensure that when a user attempts to go to "www.MyPersonalBank.com ", the user is directed to a phishing site.

Which file does the attacker need to modify?

Options:

A.

Boot.ini

B.

Sudoers

C.

Networks

D.

Hosts

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Question # 151

A company’s policy requires employees to perform file transfers using protocols which encrypt traffic. You suspect some employees are still performing file transfers using unencrypted protocols because the employees do not like changes. You have positioned a network sniffer to capture traffic from the laptops used by employees in the data ingest department. Using Wireshark to examine the captured traffic, which command can be used as display filter to find unencrypted file transfers?

Options:

A.

tcp.port = = 21

B.

tcp.port = 23

C.

tcp.port = = 21 | | tcp.port = =22

D.

tcp.port ! = 21

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Question # 152

Which address translation scheme would allow a single public IP address to always correspond to a single machine on an internal network, allowing "server publishing"?

Options:

A.

Overloading Port Address Translation

B.

Dynamic Port Address Translation

C.

Dynamic Network Address Translation

D.

Static Network Address Translation

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Question # 153

A network admin contacts you. He is concerned that ARP spoofing or poisoning might occur on his network. What are some things he can do to prevent it? Select the best answers.

Options:

A.

Use port security on his switches.

B.

Use a tool like ARPwatch to monitor for strange ARP activity.

C.

Use a firewall between all LAN segments.

D.

If you have a small network, use static ARP entries.

E.

Use only static IP addresses on all PC's.

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Exam Code: 312-50v12
Exam Name: Certified Ethical Hacker Exam (CEHv12)
Last Update: Feb 23, 2025
Questions: 572
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