TECHNOLOGY

What is Iterator? An Iterator is an object that enables a programmer to traverse a container, particularly lists. It is used with most of the collection classes like ArrayList, LinkedList, HashSet, TreeMap, TreeSet etc but iterators cannot be used with legacy classes like Vectors, Stack, HashTables etc. Iterator allows to remove elements from the underlying … Read more

What Is File Transfer Protocol (FTP)? The File Transfer Protocol is a standard network protocol used for the transfer of computer files between a client and server on a computer network (over TCP/IP) Connections. FTP lets people and applications exchange and share data within their offices and across the internet. FTP relies on two communication … Read more

What Is A Loosely Coupled System? A loosely coupled system is an approach of interconnecting the components in a system or network so that each of its components has or makes use of little or no knowledge of the definitions of other separate components. The goal of a loose coupling architecture is to reduce the … Read more

What Is Primary Memory? All types of computer memories that are directly accessed by the processor using data bus are referred to as Primary memory. Primary memory can also be referred to as Main memory or Internal memory, however in most cases, primary memory refers to system RAM. RAM, or random access memory, consists of … Read more

What Is Soft Hand-off? Soft handoff refers to the overlapping of repeater coverage zones, so that every cell phone set is always well within range of at least one repeater (also called a base station). In some cases, mobile sets transmit signals to, and receive signals from, more than one repeater at a time. Soft handoff technology … Read more

What Is HashMap? HashMap denoted as HashMap<Key, Value> or HashMap<K, V>. It is the advanced version of HashTable and was introduced as a new class in JDK 1.2. It is a part of Java Collections. It provides the basic implementation of the Map interface of Java. It stores the data in (key, Value) pairs and … Read more

Active Components An active component is a device that has an analog electronic filter with the ability to amplify a signal or produce a power gain. All electronic circuits must contain at least one active component. Examples of Active Components Silicon-controlled rectifiers (SCRs) Transistors such as MOSFETs, FETs and JFET Diodes such as Zener diodes, … Read more

What Is Simple Mail Transfer Protocol (SMTP)? SMTP is the standard protocol for email services on a TCP/IP network. SMTP provides the ability to send and receive email messages. SMTP is one of the most common and popular protocols for email communication over the Internet and it provide intermediary network services between the remote email … Read more

What Is A Multiplexer (MUX)? A multiplexer also referred to as a data selector, is a device that selects between several analog or digital input signals and forwards the selected input to a single output line. In other words, it is a combination logic circuit designed to switch one of several input lines through to … Read more

Signal is any kind of physical quantity that conveys information. This could be electric current, voltage, electromagnetic waves that are used for wireless communication, sound etc. the two categories in which signal is classified are: Digital and Analog. Analog signals are measurements of continuous waveforms that vary with time whereas Digital signals are patterns generated … Read more