What Is A Waterfall Model? The waterfall Model is a software development process developed by Dr. Winston Royce in 1970. In waterfall approach, the whole process of software development is divided into separate phases. The outcome of one phase acts as the input for the next phase sequentially. This means that any phase in the … Read more
What Is Spiral Model? Spiral model is a risk-driven software development process model. Based on the unique risk patterns of a given project, the spiral model guides a team to adopt elements of one or more process models such as incremental, waterfall or evolutionary prototyping. Each phase in spiral model begins with a design goal … Read more
What Is Integration Testing? Integration testing sometimes referred to as integration and testing (I&T) is a level of software testing whereby individual software modules are combined logically and tested as a group. The fundamental purpose of this type of testing is detecting faults in the interaction between integrated units. Usually test drivers and test stubs … Read more
Learn the difference between black box testing and white box testing. The basis of comparison include: description, types, complexity of performance, basis of test case design and nature of the process among others. What is Black Box Testing? Black box testing also referred to as closed-box, opaque-box, eye-to-eye, behavioral or specification-based testing, is a … Read more
Learn the difference between Block Cipher and Stream Cipher. The basis of comparison include: Description, Key Use, Integrity, XOR Function, Plaintext Encryption, Speed, Implementation and Algorithm modes. What is a Cipher? A cipher is a method of hiding words or text with encryption by replacing original letters with other letters, numbers and symbols through either … Read more
Learn the difference between relay and circuit breaker. The basis of comparison include: description, use, power voltage input, capacity, how it works, amplification, contact breaking and arc prevention among others. What Is A Circuit Breaker? A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess … Read more
What is Closed-Die Forging? The Closed-Die Forging also referred to as impression die forging, is a metal forming process in which a workpiece that has been previously heated to a high temperature is pressed by means of countermoving form tools (forging dies). The heated raw material which is approximately the shape or size of the … Read more
What Is Monoalphabetic Cipher? Monoalphabetic cipher is one where each character of a plain text is mapped to a fixed other character of cipher text. Examples of monoalphabetic ciphers would include the Caesar-shift cipher, where each letter is shifted based on a numeric key, and the atbash cipher, where each letter is mapped to the … Read more
XLS (Excel Spreadsheet) and XLSX (Excel Open XML Spreadsheet) are both file formats used to store and manage data or create mathematical models in Microsoft Excel. These files store data in worksheets that contain cells arranged as a grid of rows and columns. Excel spreadsheets may also contain charts, mathematical functions and various kinds of … Read more
For any machinist, one among many of the basic concepts to understand in any milling process is the cut direction. Milling cutters can cut in two directions, conventional (sometimes known as up milling) or climb (sometimes known as down milling). In conventional milling, milling cutter rotates against the direction of feed of workpiece, the chip … Read more