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Computer Terms asked in recent Exams Part 2

RJ-45 Port
RJ45, which incidentally stands for registered jack 45, is the Ethernet style data port found on switches, routers and network cards. RJ45 actually refers to the port (female) and the connector (male) though it often is used to refer to a cable type, most commonly referred to as the Ethernet Cable.
A USB port is a standard cable connection interface for personal computers and consumer electronics devices. USB ports are used for connecting devices for data transfer and for charging devices as well. Flash drives are biggest examples for these ports, which are connected on these ports only. Types of USB Ports – USB-A, USB-B and USB-C.
Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The interface is designed to transmit uncompressed digital video and can be configured to support multiple modes such as DVI-A (analog only), DVI-D (digital only) or DVI-I (digital and analog). DVI can stream up to 1920×1200 HD video, or with dual-link DVI connectors you can support up to 2560×1600 pixels.
Augmented Reality
Augmented reality is using technology to superimpose information on the world we see. This is rather different from virtual reality. Virtual reality means computer-generated environments for you to interact with, and being immersed in. Augmented reality (also known as AR), adds to the reality you would ordinarily see rather than replacing it.
Pokemon go game is a good example of AR where the gamers used physical world as gaming spaces with superimposed Pokemon ( the character of the game) in the real world.
IEEE 802
IEEE 802 is a family of The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) is an organisation within IEEE that develops global standards in a broad range of industries. IEEE 802 are standards dealing with local area networks and metropolitan area networks.
Some important working groups of IEEE802 protocol family are:
IEEE 802.1         Higher Layer LAN Protocols (Bridging)
IEEE 802.3         Ethernet
IEEE 802.11 Wireless LAN (WLAN) & Mesh (Wi-Fi certification)
IEEE 802.14 Cable modems
IEEE 802.15 Wireless PAN
ARPANET was a large wide-area network created by the United States Defense Advanced Research Project Agency (ARPA). ARPANET was to be used for projects at universities and research laboratories in the US. The Internet protocol suite (TCP/IP) was introduced as the standard networking protocol on the ARPANET.
Data warehousing
A data warehouse is a relational database that is designed for query and analysis rather than for transaction processing. Data warehouse is also known as an enterprise data warehouse is a system used for reporting and data analysis, and is the central repository of integrated data from one or more disparate sources.  Data warehousing involves data cleaning, data integration, and data consolidations.
Data Mining
Data Mining (sometimes called data or knowledge discovery) is the process of analysing data from different perspectives and summarising it into useful information. The related terms data dredging, data fishing, and data snooping refer to the use of data mining methods to sample parts of a larger population data set.
Data warehousing is the process of compiling and organising data into one common database, and data mining is the process of extracting meaningful data from that database.


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