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

Question # 124

An incident investigator asks to receive a copy of the event logs from all firewalls, proxy servers, and Intrusion Detection Systems (IDS) on the network of an organization that has experienced a possible breach of security. When the investigator attempts to correlate the information in all of the logs, the sequence of many of the logged events do not match up.

What is the most likely cause?

Options:

A.

The network devices are not all synchronized.

B.

Proper chain of custody was not observed while collecting the logs.

C.

The attacker altered or erased events from the logs.

D.

The security breach was a false positive.

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Question # 125

Which of the following is the BEST way to defend against network sniffing?

Options:

A.

Using encryption protocols to secure network communications

B.

Register all machines MAC Address in a Centralized Database

C.

Use Static IP Address

D.

Restrict Physical Access to Server Rooms hosting Critical Servers

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Question # 126

You have gained physical access to a Windows 2008 R2 server which has an accessible disc drive. When you attempt to boot the server and log in, you are unable to guess the password. In your toolkit, you have an Ubuntu 9.10 Linux LiveCD. Which Linux-based tool can change any user’s password or activate disabled Windows accounts?

Options:

A.

John the Ripper

B.

SET

C.

CHNTPW

D.

Cain & Abel

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Question # 127

Email is transmitted across the Internet using the Simple Mail Transport Protocol. SMTP does not encrypt email, leaving the information in the message vulnerable to being read by an unauthorized person. SMTP can upgrade a connection between two mail servers to use TLS. Email transmitted by SMTP over TLS is encrypted. What is the name of the command used by SMTP to transmit email over TLS?

Options:

A.

OPPORTUNISTICTLS

B.

UPGRADETLS

C.

FORCETLS

D.

STARTTLS

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Question # 128

Bob is acknowledged as a hacker of repute and is popular among visitors of "underground" sites.

Bob is willing to share his knowledge with those who are willing to learn, and many have expressed their interest in learning from him. However, this knowledge has a risk associated with it, as it can be used for malevolent attacks as well.

In this context, what would be the most effective method to bridge the knowledge gap between the "black" hats or crackers and the "white" hats or computer security professionals? (Choose the test answer.)

Options:

A.

Educate everyone with books, articles and training on risk analysis, vulnerabilities and safeguards.

B.

Hire more computer security monitoring personnel to monitor computer systems and networks.

C.

Make obtaining either a computer security certification or accreditation easier to achieve so more individuals feel that they are a part of something larger than life.

D.

Train more National Guard and reservist in the art of computer security to help out in times of emergency or crises.

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Question # 129

As a securing consultant, what are some of the things you would recommend to a company to ensure DNS security?

Options:

A.

Use the same machines for DNS and other applications

B.

Harden DNS servers

C.

Use split-horizon operation for DNS servers

D.

Restrict Zone transfers

E.

Have subnet diversity between DNS servers

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Question # 130

When analyzing the IDS logs, the system administrator noticed an alert was logged when the external router was accessed from the administrator’s Computer to update the router configuration. What type of an alert is this?

Options:

A.

False negative

B.

True negative

C.

True positive

D.

False positive

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Question # 131

“........is an attack type for a rogue Wi-Fi access point that appears to be a legitimate one offered on the premises, but actually has been set up to eavesdrop on wireless communications. It is the wireless version of the phishing scam. An attacker fools wireless users into connecting a laptop or mobile phone to a tainted hot-spot by posing as a legitimate provider. This type of attack may be used to steal the passwords of

unsuspecting users by either snooping the communication link or by phishing, which involves setting up a fraudulent web site and luring people there.”

Fill in the blank with appropriate choice.

Options:

A.

Evil Twin Attack

B.

Sinkhole Attack

C.

Collision Attack

D.

Signal Jamming Attack

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Question # 132

A large company intends to use Blackberry for corporate mobile phones and a security analyst is assigned to evaluate the possible threats. The analyst will use the Blackjacking attack method to demonstrate how an attacker could circumvent perimeter defenses and gain access to the Prometric Online Testing – Reports https://ibt1.prometric.com/users/custom/report_queue/rq_str... corporate network. What tool should the analyst use to perform a Blackjacking attack?

Options:

A.

Paros Proxy

B.

BBProxy

C.

Blooover

D.

BBCrack

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Question # 133

What is the following command used for?

net use \targetipc$ "" /u:""

Options:

A.

Grabbing the etc/passwd file

B.

Grabbing the SAM

C.

Connecting to a Linux computer through Samba.

D.

This command is used to connect as a null session

E.

Enumeration of Cisco routers

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Question # 134

While using your bank’s online servicing you notice the following string in the URL bar:

“http: // www. MyPersonalBank. com/ account?id=368940911028389 &Damount=10980&Camount=21”

You observe that if you modify the Damount & Camount values and submit the request, that data on the web page reflects the changes.

Which type of vulnerability is present on this site?

Options:

A.

Cookie Tampering

B.

SQL Injection

C.

Web Parameter Tampering

D.

XSS Reflection

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Question # 135

What term describes the amount of risk that remains after the vulnerabilities are classified and the countermeasures have been deployed?

Options:

A.

Residual risk

B.

Impact risk

C.

Deferred risk

D.

Inherent risk

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Question # 136

You just set up a security system in your network. In what kind of system would you find the following string of characters used as a rule within its configuration? alert tcp any any -> 192.168.100.0/24 21 (msg: ““FTP on the network!””;)

Options:

A.

A firewall IPTable

B.

FTP Server rule

C.

A Router IPTable

D.

An Intrusion Detection System

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Question # 137

A large mobile telephony and data network operator has a data center that houses network elements. These are essentially large computers running on Linux. The perimeter of the data center is secured with firewalls and IPS systems.

What is the best security policy concerning this setup?

Options:

A.

Network elements must be hardened with user ids and strong passwords. Regular security tests and audits should be performed.

B.

As long as the physical access to the network elements is restricted, there is no need for additional measures.

C.

There is no need for specific security measures on the network elements as long as firewalls and IPS systems exist.

D.

The operator knows that attacks and down time are inevitable and should have a backup site.

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Question # 138

You are tasked to perform a penetration test. While you are performing information gathering, you find an employee list in Google. You find the receptionist’s email, and you send her an email changing the source email to her boss’s email (boss@company). In this email, you ask for a pdf with information. She reads your email and sends back a pdf with links. You exchange the pdf links with your malicious links (these links contain malware) and send back the modified pdf, saying that the links don’t work. She reads your email, opens the links, and her machine gets infected. You now have access to the company network. What testing method did you use?

Options:

A.

Social engineering

B.

Piggybacking

C.

Tailgating

D.

Eavesdropping

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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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