What Is Semaphore? Semaphore is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as multitasking operating system. Semaphore concept was invented by Dutch computer scientist, Edsger Dijkstra in 1962. Semaphore is typically a variable used to solve critical section problems and … Read more
What Is BOOTP? BOOTP stands for Bootstrap Protocol. BOOTP was originally defined as specification RFC 951 and was configured to replace the Reverse Address Resolution Protocol (RARP), also referred to as RFC 903. BOOTP can be defined as a networking protocol used by a client for obtaining an IP address from a server. When … Read more
Client-Server Network A client server network is a specific type of online network comprised of a single central computer acting as a server that directs multiple other computers, which are referred to as the clients. By accessing the server, clients are then able to reach shared files and information saved on the serving computer. Examples … Read more
Uniform Memory Access (UMA) Uniform memory access (UMA) is a shared memory architecture used in parallel computers. All the processors in the UMA model share the physical memory uniformly. In UMA architecture, access time to a memory location is independent of which processor makes the request or which memory chip contains the transferred data. There … Read more
Twisted pair cable, fiber optic cable and coaxial cable are three major types of network cables used in modern communication systems. These cables mainly differ from one another in terms of latency, speed of data transfer and overall security. What Is Twisted Pair Cable? Twisted pair cable is a type of cable in which two … Read more
A real-time operating system is an operating system intended to serve real-time applications that process data as it comes in, typically without delay. Real-time system can be classified into two: Hard Real Time Systems Soft Real Time Systems Hard Real Time System (Immediate Real-Time System) A hard real-time system also referred to as immediate real-time … Read more
A transistor is a linear semiconductor device that controls current with the application of a lower-power electrical signal. Transistors are usually categorized into two groups: bipolar and field-effect. A bipolar transistor is a commonly used for amplification. The device can amplify analog or digital signals. It can also switch DC or function as an oscillator. Physically, a bipolar … Read more
What Is MAC Address? MAC (Media Access Control) address is a unique identifier that is assigned to every internet-connected machine that allows it to be identified when connected to a specific network. The use of MAC is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi and Bluetooth. A MAC address consists of six … Read more
What Is Process? In operating system (OS), a process is the instance of a computer program that is being executed by one or many threads. For example, when we write a program in C or C++ and compile it, the compiler creates binary code. The original code and binary code are both programs, and therefore … Read more
In programming, data can be stored in data structures like graphs and trees. A tree is typically special form of graph i.e minimally connected graph and having only one path between any two vertices. In other words tree is a special case of graph having no loops, circuits and no-self loops. Graphs can have loops, … Read more