Networking
Definitions about networking including routing and switching vocabulary, telecom terminology and words about email, messaging and mobile.
High-speed networks
Terms related to high-speed communication networks, including network and end-system architecture definitions and words and phrases about high-bandwidth and low-latency communication.
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What is a SIM card and how does it work?
A SIM card, also known as a subscriber identity module, is a smart card that stores the information necessary for a smartphone to connect to a mobile network.
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What is signal-to-noise ratio and how is it measured?
A signal-to-noise ratio compares the strength of a desired signal with any undesired signals created by background noise.
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What is GSM (Global System for Mobile Communications)?
GSM (Global System for Mobile Communications) is a digital mobile communication standard applied widely in Europe and other parts of the world.
Network Admin
Terms related to managing computer networks, including definitions about LANS or WANS and words and phrases about network design, troubleshooting, security and backups.
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What is an attack surface? Examples and best practices
An attack surface is the total number of possible entry points and attack vectors an organization or system has that are susceptible to unauthorized access.
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What are the Uptime Institute's data center tier standards?
Data center tiers are a system created by Uptime Institute LLC to describe the availability of infrastructure resources in a facility.
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What is PUE (power usage effectiveness)?
Power usage effectiveness (PUE) is a metric used to determine the energy efficiency of a data center.
Network hardware
Terms related to network hardware, including definitions about cables or file servers and words and phrases about routers and switches.
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What is short message service center (SMSC)?
The short message service center (SMSC) is the portion of a mobile phone network that handles text message operations.
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What is 1000BASE-T (Gigabit Ethernet)?
1000BASE-T is a Gigabit Ethernet standard that operates at a speed of 1 gigabit per second (Gbps) over copper wiring.
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What is Routing Information Protocol (RIP)?
Routing Information Protocol (RIP) is a distance vector protocol that uses hop count as its primary metric.
Networking and communications
Terms related to networking and communications, including definitions about network protocols and words and phrases about data transmission.
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What is signal-to-noise ratio and how is it measured?
A signal-to-noise ratio compares the strength of a desired signal with any undesired signals created by background noise.
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What is the OSI model? The 7 layers of OSI explained
The OSI model (Open Systems Interconnection model) is a multilayered reference model that shows how computer systems and applications communicate over a network.
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What is short message service center (SMSC)?
The short message service center (SMSC) is the portion of a mobile phone network that handles text message operations.
Wireless and mobile
Terms related to wireless and mobile technology, including definitions about consumer mobile technology devices and communication technologies such as Wi-Fi, WiMAX and LTE.
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What is A2P messaging (application-to-person messaging)?
A2P messaging (application-to-person messaging) is a type of SMS messaging technique in which a person receives text messages from a software application rather than from another user.
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Apple watchOS (Apple Watch operating system)
Apple watchOS is the operating system (OS) designed specifically for the Apple Watch wearable device, with features that take advantage of the smaller screen and location of the device on the user's wrist.
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What is Cisco ISE?
Cisco Identity Services Engine (ISE) is a security policy management platform that provides secure network access to end users and devices.