MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

Q
Glossary G-35
QoS See quality of service.
quality of service (QoS)
data transmission.
A set of quality assurance standards and mechanisms for
R
RADIUS See Remote Authentication Dial-In User Service (RADIUS).
RAID See redundant array of independent disks (RAID).
RAM See random access memory (RAM).
random access memory (RAM) Semiconductor-based memory that can be read
and written to by the microprocessor or other hardware devices. The storage locations
can be accessed in any order. Note that the various types of read-only memory
(ROM) are also capable of random access. However, RAM is generally
understood to refer to volatile memory, which can be written as well as read. See
also read-only memory (ROM).
RDN See relative distinguished name (RDN).
read-only memory (ROM) Semiconductor-based memory that contains instructions
or data that can be read but not modified. See also random access memory (RAM).
recovery agent A user account that is given the capability to decrypt an encrypted
file or folder in case the owner of the resource loses the file encryption certificate
that allows decryption.
Recovery Console A command-line console interface that provides access to the
hard disks and a limited set of administrative commands useful for recovering a
computer.
redirector Networking software that accepts input/output (I/O) requests for remote
files, named pipes or mail slots, and sends (redirects) the requests to a network
service on another computer.
Reduced Instruction Set Computing (RISC) A type of microprocessor design that
focuses on rapid and efficient processing of a relatively small set of instructions.
RISC architecture limits the number of instructions that are built into the microprocessor,
but it optimizes each so it can be carried out very rapidly, usually within a
single clock cycle.
redundancy system A fault-tolerant system that protects data by duplicating it in
different physical sources. Data redundancy allows access to data even if part of
the data system fails. See also fault tolerance.