R
radio frequency (RF)

The part of the radio spectrum that a device uses.

radio frequency interference (RFI)

The byproduct of electrical processes, similar to electromagnetic interference. The major difference is that RFI is usually projected across a radio spectrum.

RADIUS

See Remote Authentication Dial-In User Service (RADIUS).

RAID

See Redundant Array of Independent (or Inexpensive) Disks (RAID).

RAID levels

The different types of RAID, such as RAID-0, RAID-1, and so on.

RAS

See Remote Access Server (RAS).

RBAC

See Role-Based Access Control (RBAC).

RC5

See Rivest Cipher 5 (RC5).

Redundant Array of Independent (or Inexpensive) Disks (RAID)

A configuration of multiple hard disks used to provide fault tolerance, should a disk ...

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