GLOSSARY (CONTINUED)
IP Security (IPSec) – A suite of protocols that provides authentication, integrity, and encryption algorithms.
LAN – A group of computers and associated devices sharing a common communications line or wireless link and typically sharing the resources of a single processor or server within a small geographic area (within an office building, for example).
Megabits per second (Mbps) – Data transfer speed measured in multiples of 1 million bits per second.
Modular (chassis) switch – An upgradable switch with flexible capabilities.
Quality of service (QoS) – For optimum efficiency, the QoS component of Cisco IOS Software enables networks to control and provide predictable service to numerous applications, allocating priority, dedicating bandwidth, and controlling jitter and latency.
Router – A device that moves data between different network segments and can look into a packet header to determine the best path for the packet to travel. Routers can connect network segments that use different protocols.They also allow all users in a network to share a single connection to the Internet or WAN.
Small Form Factor Pluggable (SFP) – A flexible port on Cisco Catalyst switches that can be configured with different types of copper or Fibre uplinks (sold separately).
Stackable switch – A switch that can stack several physical units together to make a single logical entity.
Switch – A device that improves network performance by segmenting the network. When a switch port receives data packets, it forwards those packets only to the appropriate port for the intended recipient. This capability further reduces competition for bandwidth between the clients, servers, or workgroups connected to each switch port.
Uplinks
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•Copper uplinks are based on
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VPN – A secure tunnel across the Internet through which data, video, and voice traffic can be transmitted.
WAN – A network that connects devices over great distances, such as geographical regions. A WAN often connects two or more LANs. See also LAN.