R's

Question 1

RADIUS

Answer 1

(Remote Authentication Dial-in User Service)

Used to manage remote and wireless authentication infrastructure. Users supply authentication information to RADIUS client devices, such as wireless access points. The client device then passes the authentication data to an AAA(Authentication, Authorization, and Accounting) server, which processes the request.

Question 2

RAID

Answer 2

(Redundant Array of Independent/Inexpensive Disks)

A set of vendor-independent specifications for fault-tolerant configurations on multiple-disk systems.

Question 3

RAM

Answer 3

(Random Access Memory)

The principal storage space for computer data and program instructions. RAM is described as being volatile in the sense that once power has been removed or the computer has been rebooted, data is lost.

Question 4

RDPRA Mode

Answer 4

(RDP Restricted Admin Mode)

A method of mitigating the risk of using Remote Desktop.

Question 5

RF

Answer 5

(Radio Frequency)

Radio waves propagate at different frequencies and wavelengths. Wi-Fi network products work at 2.4 GHz or5 GHz.

Question 6

RFID

Answer 6

(Radio Frequency Identification)

A chip allowing data to be read wirelessly. RFID tags are used in barcodes and smart cards.

Question 7

RIP

Answer 7

(Raster Image Processing)

The component responsible for converting instructions in the Page Description Language (PDL) to instructions that control the print engine(an inkjet’s ink dispersion nozzles or a laser printer’s developer laser, for instance). A PDL might contain instructions for printing vector graphics and fonts; the RIP translates these instructions into a pattern of dots (raster) at the required resolution.

Question 8

RJ connector

Answer 8

(Registered Jack connector)

A connector used for twisted pair cabling. 4-pairnetwork cabling uses the larger RJ-45connector. Modem/telephone 2-paircabling uses the RJ-11 connector.

Question 9

RSSI

Answer 9

(Received Signal Strength Indicator)

For a wireless signal, an index level calculated from the signal strength level.

Question 10

RTC

Answer 10

(real time clock)

Part of the system chipset that keeps track of the date and time. The RTC is powered by a battery so the PC keeps track of the time even when it is powered down. If the computer starts losing time, it is a sign that the battery is failing.

Question 11

RTOS

Answer 11

(real-time operating system)

An OS that is optimized for use in embedded or real-time apps.

Question 12

RVI

Answer 12

(Rapid Virtualization Indexing)

The term used for SLAT extensions by AMD.