demarcation point (demarc)
Is the point at which operational control or ownership of communication facilities changes from one organizational entity to another. This is usually referred to as the interface point between customer premises equipment and external network service provider equipment.
Stands for "Dynamic Host Configuration Protocol." A network server uses this protocol to dynamically assign IP addresses to networked computers. The DHCP server waits for a computer to connect to it, then assigns it an IP address from a master list stored on the server.
Stands for "Domain Name System." The primary purpose of DNS is to keep Web surfers sane. Without DNS, we would have to remember the IP address of every site we wanted to visit, instead of just the domain name. Can you imagine having to remember "18.104.22.168" instead of just "apple.com"?
Windows uses registry values to help resolve domain names into IP Addresses. Hijacking these values can cause all programs that use the internet to be redirected to other pages for what appears to be no reason.
A digital video recorder (DVR), sometimes referred to by the merchandising term personal video recorder (PVR), is a consumer electronics device or application software that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.