Footprinting 1. Footprinting overview Also known as fingerprinting or reconnaissance 📝 Gathering information about a target system E.g. software, network protocols, operating systems or hardware devices. End goal is to find a way to break into the system. 🤗 Often offered as separate service bought by companies to check against leaks and to see what data is there. …
Hacking a. Hacker types Hacker An individual who uses their computer and technical skills to gain access to systems and networks. 🤗 A common theory is that a hacker meant initially anyone who possessed skills and knowledge and determination to solve problems in a creative way. There are arguments against it never was a benign …
Information security 1. Information security overview Protecting information and information systems. Defines sets processes and activities performed in order to protect information. Goal is to prevent unauthorized users from stealing and misusing information or services. If sensitive information falls in wrong hands, it may cause huge losses including finances, brand reputations, customers. Essential terms Hack value …
Don’t Care Condition in K-Map The “Don’t care” condition says that we can use the blank cells of a K-map to make a group of the variables. To make a group of cells, we can use the “don’t care” cells as either 0 or 1, and if required, we can also ignore that cell. We …
Decoder Decoder is the combinational circuit that change the binary information into 2N output lines The binary information is passed in the form of N input lines. The output lines define the 2N-bit code for the binary information. In simple words, the Decoder performs the reverse operation of the Encoder. At a time, only one …
Full Subtractor and Half Subtractor A Binary Subtractor is a digital circuit that performs the arithmetic binary subtraction between two numbers with respect to the logic operations and laws of Boolean Algebra. The subtractors are used in combinational circuit design and the Arithmetic Logic Unit (ALU) of the processor to calculate multiple addresses. Subtractor circuits …
Boolean Expressions from Logic Diagrams When a logic circuit is given, the Boolean expression describing that logic circuit can be obtained by combining the input variables in accordance with the logic gate functions. The procedure is best illustrated with the examples that follow. For the logic circuit shown below find D = f(A, B, C), …
K-Map A Karnaugh map (K-map) is a visual method used to simplify the algebraic expressions in Boolean functions without having to resort to complex theorems or equation manipulations. A K-map can be thought of as a special version of a truth table that makes it easier to map out parameter values and arrive at a …
Sum Of Product (SOP) Sum of Product is the abbreviated form of SOP. Sum of product form is a form of expression in Boolean algebra in which different product terms of inputs are being summed together. This product is not arithmetical multiply but it is Boolean logical AND and the Sum is Boolean logical OR. …
Deploying a Django project on PythonAnywhere is a straightforward process. PythonAnywhere provides a platform for hosting web applications and is well-suited for hosting Django projects. Here’s a step-by-step guide to deploying your Django project on PythonAnywhere: Step 1: Sign Up for a PythonAnywhere Account If you don’t already have an account on PythonAnywhere, sign up …
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