Solution: A cave automatic virtual environment (better known by the recursive acronym CAVE) is an immersive virtual reality environment where projectors are directed to between three and six of the walls of a room-sized cube. 

Solution: DBMS is designed to allow the definition, creation, querying, update, and administration of databases. 

Solution: Windows Explorer displays the hierarchical structure of files, folders, and drives on your computer. 

Solution: ASCII is a 7 bit code which means that it only uses the binary values. 

Solution: A candidate key is a column, or set of columns, in a table that can uniquely identify any database record without referring to any other data. Each table may have one or more candidate keys, but one candidate key is unique, and it is called the primary key. Candidate key is a minimal super key. 

Solution: Short for unshielded twisted pair, a popular type of cable that consists of two unshielded wires twisted around each other. Due to its low cost, UTP cabling is used extensively for local-area networks (LANs) and telephone connections. 

Solution: http://www.example.com is domain name and :80 is the port number in the given URL. 

Solution: Attribute may refer to columns in a table and tuple refers to rows in a table. 

Solution: Earlier File Management Systems were used, before the usage of DBMS. 

Solution: In software, JAR (Java Archive) is a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc.) into one file to distribute application software or libraries on the Java platform. 

Solution: Dragging is the gesture of Holding the mouse button down while moving an object of text or image or any file or its part. 

Solution: BIOS (basic input/output system) is the program a personal computer’s microprocessor uses to get the computer system started after you turn it on. It also manages data flow between the computer’s operating system and attached devices such as the hard disk, video adapter, keyboard, mouse and printer. 

Solution: MPEG refers to Moving Pictures Experts Group and represents a set of various standards for encoding audio and video multimedia content. 

Solution: Booting is a startup sequence that starts the operating system of a computer when it is turned on. A boot sequence is the initial set of operations that the computer performs when it is switched on. Every computer has a boot sequence. The average computer doesn’t understand the boot sequence but is important to know for customizing and troubleshooting your computer. 

Solution: An ER model is composed of entity types (which classify the things of interest) and specifies relationships that can exist between instances of those entity types. 

Solution: Visual FoxPro is a data-centric, object-oriented, procedural, programming language produced by Microsoft. It is derived from FoxPro (originally known as FoxBASE) which was developed by Fox Software beginning in 1984. 

Solution: In computing, multitasking is a concept of performing multiple tasks (also known as processes) over a certain period of time by executing them concurrently. They’ve replaced time sharing terminology. 

Solution: The analytical engine developed during first generation of computers used counter wheels as a memory unit 

Solution: Login is the process of connecting/ accessing to an account.

Solution: An assembly (or assembler) language, is a low-level programming language for a computer, or other programmable device. 

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Solution: 1’s complement of 1101 = 0010 = 2 

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Solution: Universal gates are the gates that can be used to implement any type of Boolean logic or circuit. There are two universal gates, namely, NAND gate and NOR gate, which can be used to implement any of the basic logic gates. 

Solution: A datagram is a basic transfer unit associated with a packet-switched network. Datagrams are typically structured in header and payload sections. Datagrams provide a connectionless communication service across a packet-switched network.