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Biometric characteristics can be dividedinto two main classes:1.Physiological: These devices are related to the shape of the body. These are not limited to thefingerprint, face recognition, DNA, hand and palm geometry, and iris recognition, which has largelyreplaced the retina and odor/scent.2.Behavioral: These are related to the behavior of a person. They are not limited to the typingrhythm, gait, and voice.r NEW QUESTION # 156 Which of the following attacks is a class of brute force attacks that depends on the higher likelihood of collisions found between random attack attempts and a fixed degree of permutations?r A. Replay attackr B. Dictionary attackr C. Birthday attackr D. Phishing attackr Answer: Cr Explanation:A birthday attack is a class of brute force attacks that exploits the mathematics behind the birthday problem in probability theory. It is a type of cryptography attack. The birthday attack depends on the higher likelihood of collisions found between random attack attempts and a fixed degree of permutations.Answer option D is incorrect. A dictionary attack is a technique for defeating a cipher or authentication mechanism by trying to determine its decryption key or passphrase by searching likely possibilities. A dictionary attack uses a brute-force technique of successively trying all the words in an exhaustive list (from a pre- arranged list of values). In contrast with a normal brute force attack, where a large proportion key space is searched systematically, a dictionary attack tries only those possibilities which are most likely to succeed, typically derived from a list of words in a dictionary. Generally, dictionary attacks succeed because many people have a tendency to choose passwords which are short (7 characters or fewer), single words found in dictionaries, or simple, easily-predicted variations on words, such as appending a digit.Answer option A is incorrect. Phishing is a type of internet fraud attempted by hackers. Hackers try to log into system by masquerading as a trustworthy entity and acquire sensitive information, such as, username, password, bank account details, credit card details, etc. After collecting this information, hackers try to use this information for their gain.Answer option B is incorrect. A replay attack is a form of network attack in which a valid data transmission is maliciously or fraudulently repeated or delayed. This is carried out either by the originator or by an adversary who intercepts the data and retransmits it, possibly as part of a masquerade attack by IP packet substitution.r NEW QUESTION # 157 In which of the following attacks does an attacker use software that tries a large number of key combinations in order to get a password?r A. Buffer overflowr B. Brute force attackr C. Zero-day attackr D. Smurf attackr Answer: Br NEW QUESTION # 158 Which of the following are used as a cost estimating technique during the project planning stage?Each correct answer represents a complete solution. Choose three.r A. Function point analysisr B. Program Evaluation Review Technique (PERT)r C. Expert judgmentr D. Delphi techniquer Answer: A,C,Dr Explanation:Delphi technique, expert judgment, and function point analysis are used as a cost estimating technique during the project planning stage. Delphi is a technique to identify potential risk. In this technique, the responses are gathered via a questionnaire from different experts and their inputs are organized according to their contents. The collected responses are sent back to these experts for further input, addition, and comments. The final list of risks in the project is prepared after that. The participants in this technique are anonymous and therefore it helps prevent a person from unduly influencing the others in the group. The Delphi technique helps in reaching the consensus quickly. Expert judgment is a technique based on a set of criteria that has been acquired in a specific knowledge area or product area. It is obtained when the project manager or project team requires specialized knowledge that they do not possess. Expert judgment involves people most familiar with the work of creating estimates. Preferably, the project team member who will be doing the task should complete the estimates. Expert judgment is applied when performing administrative closure activities, and experts should ensure the project or phase closure is performed to the appropriate standards. A function point is a unit of measurement to express the amount of business functionality an information system provides to a user. Function points are the units of measure used by the IFPUG Functional Size Measurement Method. The IFPUG FSM Method is an ISO recognized software metric to size an information system based on the functionality that is perceived by the user of the information system, independent of the technology used to implement the information system. Answer option B is incorrect. A PERT chart is a project management tool used to schedule, organize, and coordinate tasks within a project. PERT stands for Program Evaluation Review Technique, a methodology developed by the U.S. Navy in the 1950s to manage the Polaris submarine missile program. A PERT chart presents a graphic illustration of a project as a network diagram consisting of numbered nodes (either circles or rectangles) representing events, or milestones in the project linked by labeled vectors (directional lines) representing tasks in the project. The direction of the arrows on the lines indicates the sequence of tasks.r NEW QUESTION # 159 Which of the following ranges of addresses can be used in the first octet of a Class C network address?r A. 128-191r B. 0-127r C. 192-223r D. 224-255r Answer: Cr NEW QUESTION # 160......r The ExamDumpsVCE Free EC-COUNCIL 312-38 sample questions, allow you to enjoy the process of buying risk-free. This is a version of the exercises, so you can see the quality of the questions, and the value before you decide to buy. We are confident that ExamDumpsVCE the EC-COUNCIL 312-38 sample enough you satisfied with the product. In order to ensure your rights and interests, ExamDumpsVCE commitment examination by refund. 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