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A RADIUS (Remote Authentication Dial-In User Service)(RFC2138, 2139) server performs authentication,

authorization and accounting for a network.

Rate adaption is the ability of the device to adjust the configured transmission rate to the attainable

transmission rate automatically depending on your telephone line quality.

There are currently seven regional telephone companies that were created by the AT&T divestiture.

The finding and observation of potential targets for a cracker to attack.

A remote loopback test is used to test the connection between two DSL devices. The local device

sends an Ethernet frame to the other (remote) DSL device and checks for it to be returned.

The IPSec receiver can detect and reject old or duplicate packets to protect against replay attacks.

This hardware button is used to restore the factory default settings.

Reverse engineering means analyzing software, firmware, or hardware to find out how it works.

An RFC is an Internet formal document or standard that is the result of committee drafting and

subsequent review by interested parties.

Ring Type determines the sound and frequency of your telephone's ring.

An interior or intra-domain routing protocol that uses distance-vector routing algorithms.

RIP is used on the Internet and is common in the NetWare environment as a method for exchanging

routing information between routers.

Roaming in wireless network applications is a wireless feature that allows wireless LAN clients to connect

through multiple access points while moving from coverage area to coverage area.

In STP, the root bridge is the base of the spanning tree; it is the bridge with the lowest identifier value (MAC address).

A device that connects two networks together. Routers monitor, direct and filter information that passes

between these networks.

RS-232 is an EIA standard which is the most common way of linking data devices together.

RSA is a public-key encryption and digital signature algorithm.

This is the number of frames received on this interface with CRC (Cyclic Redundant Check) error(s).

This is the number of kilobytes per-second received on an interface.