what are the three most common types of network infrastructures?
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The network infrastructure contains three categories of network components—devices, media, and services—as shown in Figure 1-6.
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Internet infrastructure is the physical hardware, transmission media, and software used to interconnect computers and users on the Internet. Internet infrastructure is responsible for hosting, storing, processing, and serving the information that makes up websites, applications, and content.
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Two basic network types are local-area networks (LANs) and wide-area networks (WANs). LANs connect computers and peripheral devices in a limited physical area, such as a business office, laboratory, or college campus, by means of links (wires, Ethernet cables, fibre optics, Wi-Fi) that transmit data rapidly.
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It provides services such as connection-oriented communication, reliability, flow control, and multiplexing. The details of implementation and semantics of the transport layer of the Internet protocol suite, which is the foundation of the Internet, and the OSI model of general networking are different.
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To connect to a network, a computer uses a network interface card or controller (NIC). This is often built into the motherboard. The two most common types of network connections are Ethernet (wired) and WiFi (wireless).
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There are three components of network security: hardware, software, and cloud services. Hardware appliances are servers or devices that perform certain security functions within the networking environment.
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There are three components to the Internet: e-mail; Usenet newsgroups; and the World-Wide Web.
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The key storage infrastructure components are Servers, storage systems, and storage area networks (SANs). These components could be physical or virtual and are used to provide services to the users.
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['Resource Sharing: All computers in a network can share resources such as printers, fax machines, modems and scanners.', 'File Sharing and Remote Database Access: A computer network allows sharing of files and access to remote database.']
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Network Components. There are three primary components to understanding networks: 1. Physical Connections; 2. Network Operating System; and 3.
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['Ad Hoc Mode. While not popular, it is possible to have wireless devices communicate directly with no central device managing the communications. ... ', 'Network Infrastructure Mode. ... ', 'Workgroup Bridge. ... ', 'Repeater. ... ', 'Outdoor Wireless Bridge. ... ', 'Outdoor Mesh Networks.']
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However, for the most part, there are three broad types of IT security: Network, End-Point, and Internet security (the cybersecurity subcategory). The other various types of IT security can usually fall under the umbrella of these three types.
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The most basic architecture is a three-layer architecture [3–5] as shown in Figure 1. It was introduced in the early stages of research in this area. It has three layers, namely, the perception, network, and application layers.
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['Personal Area Network (PAN) ... ', 'Local Area Network (LAN) ... ', 'Wireless Local Area Network (WLAN) ... ', 'Campus Area Network (CAN) ... ', 'Metropolitan Area Network (MAN) ... ', 'Wide Area Network (WAN) ... ', 'Storage-Area Network (SAN) ... ', 'System-Area Network (also known as SAN)']
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['Indirect Access. This is most common method used in home and office networks. ... ', 'Direct Access. This is most common method used when traveling. ... ', 'Fixed Internet- Home/Office. ... ', 'Mobile Internet. ... ', 'ADSL Broadband over Existing Phone Lines. ... ', 'Cable Broadband. ... ', 'Fibre or Fiber Broadband. ... ', 'Mobile Broadband 3G and 4G.']
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['The Physical Layer.', 'The Data Link Layer.', 'The Network Layer.', 'The Transport Layer.', 'The Session Layer.', 'The Presentation Layer.', 'The Application Layer.']
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['Network virtualization. Network virtualization takes the available resources on a network and breaks the bandwidth into discrete channels. ... ', 'Storage virtualization. ... ', 'Desktop virtualization. ... ', 'Application virtualization.']