DHCP

Dynamic Host Configuration Protocol, a networking protocol used in servers to assign automatically IP addresses to the network nodes to accomplish as network connectivity.

DDR3

Very similar to DDR2 RAM type, but doubles the minimum read or write unit again to 8 consecutive words of data per clock cycle, it comes with 240-pin interface and one notch.

DDR2

Very similar to DDR RAM type, but doubles the minimum read or write unit again to 4 consecutive words of data per clock cycle,it comes with 240-pin interface and one notch.

DDR

Dual Data Rate,sometimes they name it as DDR1, it reads or writes two words of data per clock cycle,it comes with 184-pin interface and one notch.

Defragmentation

A process that reduces the amount of fragmentation in file systems. And it does this by physically organizing the contents of the disk to store the pieces of each file close together

DMA

Direct Memory Access, a useful method for transferring the data between Medias without processing them by the CPU.