Networking

A network trunk is a communications line or link designed to carry multiple signals simultaneously to provide network access between two points.

Serial digital interface (SDI) is a standard for digital video and audio transmission over coaxial or fiber optic cabling.

Synchronous Data Link Control (SDLC) is a transmission protocol used to synchronously transfer code-transparent, serial-by-bit data over a communications channel.

Email spam, also known as junk email, refers to unsolicited email messages, usually sent in bulk to a large list of recipients.

A mail server -- also known as a mail transfer agent, or MTA; mail transport agent; mail router; or internet mailer -- is an application that receives incoming email from local users and remote senders and forwards outgoing messages for delivery.

Spear phishing is a malicious email spoofing attack that targets a specific organization or individual, seeking unauthorized access to sensitive information.

The Joint Academic Network (JANET) is an internal, high-speed computer network that links the U.K. education and research community.

Serial digital interface (SDI) is a standard for digital video and audio transmission over coaxial or fiber optic cabling.

1000BASE-T is Gigabit Ethernet -- 1 gigabit is 1,000 megabits per second (Mbps) on copper cables, using four pairs of Category 5 (Cat5) unshielded twisted pair (UTP) to achieve the gigabit data rate.

The internet of things, or IoT, is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction.

Operational technology (OT) is a category of hardware and software that monitors and controls how physical devices perform.

A mesh network is a network in which devices -- or nodes -- are linked together, branching off other devices or nodes.

Network automation is a methodology in which software automatically configures, provisions, manages and tests network devices.

In computer networking, promiscuous mode is a mode of operation, as well as a security, monitoring and administration technique.

Conductance is an expression of the ease with which electric current flows through materials like metals and nonmetals.

1000BASE-T is Gigabit Ethernet -- 1 gigabit is 1,000 megabits per second (Mbps) on copper cables, using four pairs of Category 5 (Cat5) unshielded twisted pair (UTP) to achieve the gigabit data rate.

Network-attached storage (NAS) is dedicated file storage that enables multiple users and heterogeneous client devices to retrieve data from centralized disk capacity.

The domain name system (DNS) is a naming database in which internet domain names are located and translated into Internet Protocol (IP) addresses.

Runbooks are a set of standardized written procedures for completing repetitive IT processes within a company.

Visitor-based networking (VBN) is a computer network with high-speed internet access provided by an organization for temporary use by visitors, guests or other users in a public area.

A virtual private network (VPN) is a service that creates a safe, encrypted online connection.

Speech technology is a type of computing technology that enables an electronic device to recognize, analyze and understand spoken word or audio.

Telecommunications, also known as telecom, is the exchange of information over significant distances by electronic means and refers to all types of voice, data and video transmission.

Deep packet inspection (DPI) is an advanced method of examining and managing network traffic.

Top-of-rack switching refers to a distributed data center architecture where one or more Ethernet switches is installed in a rack, then uplinked using high-bandwidth fiber optic connections to a central, high-density distribution point.

Network automation is a methodology in which software automatically configures, provisions, manages and tests network devices.

GVRP (GARP VLAN Registration Protocol or Generic VLAN Registration Protocol) is a standards-based protocol that facilitates control of virtual local area networks (VLANs) within a larger network.

Power over Ethernet (PoE) is a technology for implementing wired Ethernet local area networks (LANs) that enables the electrical current necessary for operating each device to be carried by Ethernet data cables instead of standard electrical power cords and wiring.

The internet of things, or IoT, is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction.

Customer premises equipment (CPE) is telecommunications and information technology equipment kept at the customer's physical location rather than on the service provider's premises.

The public switched telephone network, or PSTN, is the world's collection of interconnected voice-oriented public telephone networks.

The Joint Academic Network (JANET) is an internal, high-speed computer network that links the U.K. education and research community.

Telecommunications, also known as telecom, is the exchange of information over significant distances by electronic means and refers to all types of voice, data and video transmission.

Real-time Transport Protocol (RTP) is a network standard designed for transmitting audio or video data that is optimized for consistent delivery of live data.

Plain Old Telephone Service (POTS) refers to the traditional, analog voice transmission phone system implemented over physical copper wires (twisted pair).

A session border controller (SBC) is a dedicated hardware device or software application that governs the manner in which phone calls are initiated, conducted and terminated on a voice over Internet Protocol (VoIP) network.

A virtual private network (VPN) is a service that creates a safe, encrypted online connection.

Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b.

QAM (quadrature amplitude modulation) is a method of combining two amplitude modulation (AM) signals into a single channel.

Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b.

Multiplexing, or muxing, is a way of sending multiple signals or streams of information over a communications link at the same time in the form of a single, complex signal.

QAM (quadrature amplitude modulation) is a method of combining two amplitude modulation (AM) signals into a single channel.