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312-38 Dumps Reviews - Examinations 312-38 Actual Questions

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EC-COUNCIL EC-Council Certified Network Defender CND Sample Questions (Q88-Q93):

NEW QUESTION # 88
Which of the following biometric devices is used to take impressions of the friction ridges of the skin on the underside of the tip of the fingers?

A. Fingerprint reader
B. Voice recognition voiceprint
C. Iris camera
D. Facial recognition device

Answer: A

Explanation:
A fingerprint reader is used to take impressions of the friction ridges of the skin on the underside of the tip of the fingers. Fingerprints help in identifying users and are unique and different to everyone and do not change over time. Even identical twins who share their DNA do not have the same fingerprints. Police and Government agencies have used these modes in order to identify humans for many years, but other agencies are starting to use biometric fingerprint readers for identification in many different applications. A fingerprint is created when the friction ridges of the skin come in contact with a surface that is receptive to a print by means of an agent to form the print like perspiration, oil, ink, grease, and many more. The agent is then transferred to the surface and leaves an impression which creates the fingerprint.
Answer option B is incorrect. An iris camera is used to perform recognition detection of a user's identity by mathematical analysis of the random patterns that are visible within the iris of an eye from some distance. It is used to combine computer vision, pattern recognition, statistical inference, and optics.
Answer option A is incorrect. A facial recognition device helps in viewing an image or video of a person and compares it to one that is in the database. It performs facial recognition by comparing the following: Structure, shape, and proportions of the face Distance between the eyes, nose, mouth, and jaw Upper outlines of the eye sockets The sides of the mouth Location of the nose and eyes The area surrounding the check bones. Answer option C is incorrect. A voice recognition voiceprint is a spectrogram, which is a graph that shows a sound's frequency on the vertical axis and time on the horizontal axis. Different speech sounds help in creating different shapes on the graph. Spectrograms also use color or shades of gray to represent the acoustical qualities of sound.

NEW QUESTION # 89
Which of the following is an attack on a website that changes the visual appearance of the site and seriously damages the trust and reputation of the website?

A. Zero-day attack
B. Spoofing
C. Website defacement
D. Buffer overflow

Answer: C

Explanation:
Website defacement is an attack on a website that changes the visual appearance of the site. These are typically the work of system crackers, who break into a Web server and replace the hosted website with one of their own.Sometimes, the Defacer makes fun of the system administrator for failing to maintain server security. Most times, the defacement is harmless; however, it can sometimes be used as a distraction to cover up more sinister actions such as uploading malware. A high-profile website defacement was carried out on the website of the company SCO Group following its assertion that Linux contained stolen code. The title of the page was changed from Red Hat vs. SCO to SCO vs. World with various satirical content. Answer option D is incorrect. Buffer overflow is a condition in which an application receives more data than it is configured to accept. This usually occurs due to programming errors in the application. Buffer overflow can terminate or crash the application. Answer option B is incorrect. A zero-day attack, also known as zero-hour attack, is a computer threat that tries to exploit computer application vulnerabilities which are unknown to others, undisclosed to the software vendor, or for which no security fix is available. Zero-day exploits (actual code that can use a security hole to carry out an attack) are used or shared by attackers before the software vendor knows about the vulnerability. User awareness training is the most effective technique to mitigate such attacks. Answer option C is incorrect. Spoofing is a technique that makes a transmission appear to have come from an authentic source by forging the IP address, email address, caller ID, etc. In IP spoofing, a hacker modifies packet headers by using someone else's IP address to hide his identity. However, spoofing cannot be used while surfing the Internet, chatting on-line, etc.
because forging the source IP address causes the responses to be misdirected.

NEW QUESTION # 90
Which of the following UTP cables uses four pairs of twisted cable and provides transmission speeds of up to 16 Mbps?

A. Category 3
B. Category 5e
C. Category 6
D. Category 5

Answer: A

NEW QUESTION # 91
How many layers are present in the TCP/IP model?

A. 0
B. 1
C. 2
D. 3

Answer: C

NEW QUESTION # 92
Which of the following is a Unix and Windows tool capable of intercepting traffic on a network segment and capturing username and password?

A. AirSnort
B. Ettercap
C. Aircrack
D. BackTrack

Answer: B

NEW QUESTION # 93
......

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