V's Flashcards
VDE
(Virtual Desktop Environment)
A virtual environment in which users can customize and update the environment as if it was a physical environment.
VDI
(Virtual Desktop Infrastructure)
Hosting user desktops as virtual machines on a centralized server or cloud infrastructure. The desktop OS plus applications software is delivered to the client device (often a thin client) over the network as an image.
VDSL
(Very High Bitrate DSL)
A high speed version of DSL with an upstream rate between 1.5 Mbps and 2.5 Mbps and a downstream rate between 50 Mbps and55 Mbps.
VGA
(Video Graphics Array).
A standard for there solution and color depth of computer displays. VGA specifies a resolution of640x480 with 16 colors (4-bit color) at 60Hz.
VLAN
(Virtual LAN)
A logically separate network, created using switching technology. Even though hosts on two VLANs may be physically connected to the same cabling, local traffic is isolated to each VLAN so they must use a router to communicate.
VM escaping
(virtual machine escaping)
Malware running on a guest OS jumping to another guest or to the host.
VM sprawl
(virtual machine sprawl)
The uncontrolled development of more and more virtual machines.
VNC
(Virtual Network Computing)
Remote access tool and protocol. VNC is the basis of macOS screen sharing.
VPN
(Virtual Private Network)
A secure tunnel created between two endpoints connected via an unsecure network (typically the Internet). VPNs are typically created using SSL/TLS or IPsec. Encryption software is used to ensure privacy of data as messages transit through the public network.
VSAT
(Very Small Aperture Terminal)
A microwave antenna aligned to an orbital satellite that can either relay signals between sites directly or via another satellite.