The ancients, struck with this irreducibleness of the elements of human life to calculation, exalted Chance into a divinity; but that is to stay too long at the spark, which glitters truly at one point, but the universe is warm with the latency of the same fire.
A visitor location register (VLR) is a server in a cellular network that supports roaming functions for users outside the coverage area of their own HLR.
virtual LAN (VLAN) A local area network, or LAN, provides the nodes connected to it with direct (Layer 2) access to one another. It is usually comprised of one or more Ethernet switches. Computers on different LANs talk to each other using Layer 3 (IP), via a router.