NETWORK+ Terms Q-R's Flashcards
Describes the strategies used to manage and increase the flow of network traffic. QoS features enable administrators to predict bandwidth use, monitor that use, and control it to ensure that bandwidth is available to the applications that need it.
QoS (quality of service)
A security standard that employs a client/server model to authenticate remote network users. Remote users are authenticated using a challenge-andresponse mechanism between the remote-access server and the RADIUS server.
RADIUS (Remote Authentication
Dial-in User Service
A method to store data on multiple hard drives, enabling the overlapping of I/O operations. The RAID levels offer either fault-tolerance or performance advantages.
RAID (Redundant Array of
Inexpensive Disks)
A RAID configuration that employs data striping but that lacks redundancy because no parity information is recorded (see RAID 5). As a result, RAID 0 offers no fault tolerance, but it does offer increased performance. Requires a minimum of two disks.
RAID 0
A fault-tolerant method that uses disk mirroring to duplicate the information stored on a disk. Also called disk duplexing when the two drives in a RAID 1 array are connected to separate disk controllers.
RAID 1
A fault-tolerant method
that uses disk striping with distributed
parity. Striping is done across
the disks in blocks.
RAID 5
Also called RAID 1/0. A RAID configuration in which stripe sets (RAID 0) are mirrored (RAID 1). This combination provides the fault-tolerant aspects of RAID 1 and the performance advantages of RAID 0.
RAID 10
A protocol, part of the TCP/IP suite, that resolves MAC addresses to IP addresses. Its relative ARP resolves IP addresses to MAC addresses. RARP resides on the network layer of the OSI model.
RARP (Reverse Address Resolution
Protocol)
A
Windows service that enables access
to the network through remote connections.
RAS (Remote Access Service)
A presentation layer protocol that supports traffic between a Windows Terminal Client and Windows Terminal Server.
RDP (Remote Desktop Protocol)
Regulations are
actual legal restrictions with legal
consequences.
regulations
In networking,
having physical control of a remote
computer through software.
remote control
A node or computer connected to a network through a remote connection. Dialing in to the Internet from home is an example of the remote node concept
remote node
A device that regenerates
and retransmits signals on a network.
Repeaters usually are used to
strengthen signals going long distances.
repeater
A system that requests
the resolution of a name to an IP
address. This term can be applied to
both DNS and WINS clients.
resolver
To transfer data from
backup media to a server. The
opposite of backup.
restore
The process by which standards relating to the Internet, the TCP/IP suite, and associated technologies are created, commented on, and approved
RFC (Request for Comments)
Designations for the
coaxial cable used in thin coaxial
networks that operate on the
Ethernet standard.
RG-6/8/58/59
An authorization provided to users that allows them to perform certain tasks. The network administrator generally assigns rights. Slightly different from but often used with the term permissions
rights
A protocol that uses hop count as a
routing metric to control the direction
and flow of packets between
routers on an internetwork.
RIP (Routing Information Protocol)
A connector
used with telephone systems. Can
have up to six conductors.
RJ-11 connector
A connector
used with twisted-pair cable. Can
support eight conductors for four
pairs of wires.
RJ-45 connector
The entire path between
two nodes on a network.
route
A device that works at the
network layer of the OSI model to
control the flow of data between
two or more network segments
router
An algorithm for public-key
cryptography. Can be used for
encryption purposes. RSA is used as
a secure solution for e-commerce.
RSA
Real-time Transport Protocol
(RTP). The Internet-standard protocol
for the transport of real-time
data, including audio and video.
RTP
