Solution: ‘Dir/pathname/pathname’ can be used to display all files within the specified subordinate directory of the subdirectory. 

Solution: Java was introduced by Sun Microsystems. 

Solution: Spooler is a program in computing that is used to line up print jobs by storing them in the buffer for a short time and allows the printer to print at the time when it is use. 

Solution: When a logic bomb is activated by a time-related event, it is known as a Time bomb. In computer software, a time bomb is part of a computer program that has been written so that it will start or stop functioning after a predetermined date or time is reached. 

Solution: HTML and XML are based on SGML. SGML (Standard Generalized Markup Language) is a standard for how to specify a document markup language or tag set. Such a specification is itself a document type definition (DTD). SGML is not in itself a document language, but a description of how to specify one. 

Solution: Artificial intelligence (AI, also machine intelligence) is intelligent behavior by machines, rather than the natural intelligence of humans and other animals 

Solution: Primary key is used to uniquely identify a record within a table. 

Solution: Robotics is an interdisciplinary branch of engineering and science that includes mechanical engineering, electrical engineering, computer science, and others. 

Solution: In relational database data are organized in the form of table. 

Solution: hexadecimal digits are written using symbols from 0-9 or A-F. 

Solution: MIDI (Musical Instrument Digital Interface) is a protocol designed for recording and playing back music on digital synthesizers that is supported by many makes of personal computer sound cards.

Solution: Adware is software that automatically displays or downloads advertising material such as banners or pop-ups when a user is online. 

Solution: All other are valid keys except for track key. 

Solution: Thermal printers are inkless. 

Solution: Shift + Delete will delete the selected item permanently. 

Solution: A local-area network (LAN) is a computer network that spans a relatively small area. Most often, a LAN is confined to a single room, building or group of buildings. 

Solution: A hyperlink, or simply a link, is a reference to data that the reader can directly follow either by clicking, tapping, or hovering. Hyperlinks are found in nearly all Web pages, allowing users to click their way from page to page.

Solution: Antivirus software sometimes known as anti-malware software, is computer software used to prevent, detect and remove malicious software. 

Solution: Operating system is required to boot a system. 

Solution: All other except Google are Browsers. 

Solution: In the case of walkie-talkie, the person at one end sends signals, while the other on the receiving end receives these signals. The person at the receiving end cannot communicate until the person at the first end stops. 

Solution: At the time of the booting process, all necessary files of the operating system are copied to the main memory (RAM) from hard disk. These files contain all necessary information to start the computer and initiate the input-output process. 

Solution: There is no such language as medium-level-language. 

Solution: Draft document is a type of technical report that is a work in progress, a preliminary form of a possible future document. 

Solution: The Linux open source operating system, or Linux OS, is a freely distributable, cross-platform operating system based on Unix. 

Solution: Ctrl + W can be used to close a tab in a web browser