- "Data communication or digital communications, including data transmission and data reception, is the transfer and reception of data in the form of a digital bitstream or a digitized analog signal transmitted over a point-to-point or point-to-multipoint communication channel."
Study of the principles and practices of data networks used for transmitting digital data from one device to another using wired or wireless connections.
Basics of Networking: This topic covers the fundamental concepts of networks, including protocols, data transmission, addressing, and networking models.
Network Topologies: This topic covers the different types of network architectures, including bus, ring, star, and mesh topologies.
Network Components: This topic covers the various hardware and software components that make up a network, including switches, routers, hubs, and firewalls.
Transmission Media: This topic covers the different types of media used to transmit data over a network, including copper wires, fiber-optic cables, and wireless communication.
Network Protocol Suite: This topic covers the layered architecture of network protocols, including the OSI model and TCP/IP protocol suite.
Network Security: This topic covers the different types of security threats and measures that are used to secure a network.
Network Management: This topic covers the techniques and tools used to manage and monitor a network, including network analysis, troubleshooting, and optimization.
Routing Protocols: This topic covers the algorithms and protocols used to route data between different networks, including IP routing protocols, such as OSPF and BGP.
Quality of Service: This topic covers the techniques and protocols used to manage network traffic and ensure quality of service, including traffic shaping and prioritization.
Data Transmission Methods: This topic covers the different data transmission methods used in telecommunications engineering, including circuit-switched and packet-switched networks.
Network Virtualization: This topic covers the concepts and techniques used to create virtual networks, including virtual LANs, virtual private networks, and network function virtualization.
Software-Defined Networking: This topic covers the architecture and design principles of software-defined networking, including controller-based network management and programmable network elements.
Mobile Networks: This topic covers the principles and protocols used in wireless communication, including cellular networks, 5G, and Internet of Things (IoT) devices.
Internet of Things (IoT): This topic covers the principles and protocols used in IoT networks, including wireless sensor networks, RFID, and machine-to-machine communication.
Cloud Computing: This topic covers the principles and protocols used in cloud computing, including virtualization, distributed systems, and software-defined infrastructures.
Local Area Network (LAN): A LAN is a network of computers and other devices that are connected within a small area, such as a single floor of a building or a home.
Wide Area Network (WAN): A WAN is a network of computers and other devices that are spread across a large geographic area, such as a city, a country, or even the world.
Metropolitan Area Network (MAN): A MAN is a network of computers and other devices that are spread across a metropolitan area, such as a city or a town.
Storage Area Network (SAN): A SAN is a network of storage devices that are used to store and manage large amounts of data.
Wireless Local Area Network (WLAN): A WLAN is a LAN that uses wireless technology, such as Wi-Fi, to connect devices.
Campus Area Network (CAN): A CAN is a network of computers and other devices that are spread across a college or university campus.
Virtual Private Network (VPN): A VPN is a secure network that is used to connect remote users or offices to a private network over the internet.
Cloud Network: A cloud network is a type of WAN that utilizes cloud technology to connect different devices and data centers across multiple locations.
Peer-to-Peer Network (P2P): A P2P network is a decentralized network that allows devices to communicate and share resources without a central server.
Intranet/Extranet: An intranet is a private network that is used within an organization, while an extranet is a private network that is used to connect an organization to external partners or customers.
- "Examples of such channels are copper wires, optical fibers, wireless communication using radio spectrum, storage media, and computer buses."
- "The data are represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal."
- "Analog transmission is a method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable."
- "The messages are either represented by a sequence of pulses by means of a line code (baseband transmission), or by a limited set of continuously varying waveforms (passband transmission), using a digital modulation method."
- "The passband modulation and corresponding demodulation is carried out by modem equipment."
- "According to the most common definition of digital signal, both baseband and passband signals representing bit-streams are considered as digital transmission."
- "Data transmitted may be digital messages originating from a data source, for example, a computer or a keyboard."
- "It may also be an analog signal such as a phone call or a video signal, digitized into a bit-stream, for example, using pulse-code modulation or more advanced source coding schemes."
- "This source coding and decoding is carried out by codec equipment."
- "[Data communication] is the transfer and reception of data in the form of a digital bitstream or a digitized analog signal transmitted over a point-to-point or point-to-multipoint communication channel."
- "Examples of such channels are copper wires, optical fibers, wireless communication using radio spectrum, storage media, and computer buses."
- "The data are represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal."
- "The messages are either represented by a sequence of pulses by means of a line code (baseband transmission), or by a limited set of continuously varying waveforms (passband transmission)."
- "The passband modulation and corresponding demodulation is carried out by modem equipment."
- "According to the most common definition of digital signal, both baseband and passband signals representing bit-streams are considered as digital transmission."
- "Data transmitted may be digital messages originating from a data source, for example, a computer or a keyboard."
- "It may also be an analog signal such as a phone call or a video signal, digitized into a bit-stream, for example, using pulse-code modulation or more advanced source coding schemes."
- "This source coding and decoding is carried out by codec equipment."
- "[Data communication] is the transfer and reception of data in the form of a digital bitstream or a digitized analog signal transmitted over a point-to-point or point-to-multipoint communication channel."