Dell PowerConnect W Clearpass 100 Software Podręcznik Użytkownika Pobierz pdf (Strona 295)

0511296-01 | April2013 295

Term Definition

l Midspan— A device can sit between the switch and APs

The choice of endspan or midspan depends on the capabilities of the

switch to which the OAW-IAP is connected. Typically if a switch is in place

and does not support PoE, midspan power injectors are used.

PPPoE Point-to-Point Protocol over Ethernet (PPPoE) is a method of connecting

to the Internet typically used with DSL services where the client connects

to the DSL modem.

QoS Quality of Service—refers to the capability of a network to provide better

service to a specific network traffic over various technologies.

Radio Frequency (RF) Portion of electromagnetic spectrum in which electromagnetic waves are

generated by feeding alternating current to an antenna.

virtual private network (VPN) A network that uses a public telecommunication infrastructure, such as the

Internet, to provide remote offices or individual users with secure access to

their organization's network. A VPN ensures privacy through security

procedures and tunneling protocols such as the Layer Two Tunneling

Protocol (L2TP ). Data is encrypted at the sending end and decrypted at

the receiving end.

wideband code-division

multiple access (W-CDMA)

Officially known as IMT-2000 direct spread; ITU standard derived from

Code-Division Multiple Access (CDMA). W-CDMA is a third-generation

(3G) mobile wireless technology that promises much higher data speeds

to mobile and portable wireless devices than commonly offered in today's

market.

Wi-Fi A term for certain types of WLANs. Wi-Fi can apply to products that use

any 802.11 standard. Wi-Fi has gained acceptance in many businesses,

agencies, schools, and homes as an alternative to a wired LAN. Many

airports, hotels, and fast-food facilities offer public access to Wi-Fi

networks.

Wired equivalent privacy (WEP) A security protocol specified in 802.11b, designed to provide a WLAN with

a level of security and privacy comparable to what is usually expected of a

wired LAN. Data encryption protects the vulnerable wireless link between

clients and access points; once this measure has been taken, other typical

LAN security mechanisms such as password protection, end-to-end

encryption, virtual private networks (VPNs), and authentication can be put

in place to ensure privacy.

wireless Describes telecommunications in which electromagnetic waves (rather

than some form of wire) carry the signal over part or all of the

communication path.

wireless network In a Wireless LAN (WLAN), laptops, desktops, PDAs, and other computer

peripherals are connected to each other without any network cables.

These network elements or clients use radio signals to communicate with

each other. Wireless networks are set up based on the IEEE 802.11

standards.

wireless ISP (WISP) An internet service provider (ISP) that allows subscribers to connect to a

server at designated hot spots (access points) using a wireless connection

such as Wi-Fi. This type of ISP offers broadband service and allows

subscriber computers, called stations, to access the Internet and the Web

from anywhere within the zone of coverage provided by the server

antenna, usually a region with a radius of several kilometers.

Table 56:

List of Terms

1 2 ... 290 291 292 293 294 295 296

Dell PowerConnect W Clearpass 100 Software Podręcznik Użytkownika Strona 295

Komentarze do niniejszej Instrukcji

Dell PowerConnect W Clearpass 100 Software Podręcznik Użytkownika Strona 295

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Oprogramowanie Dell PowerConnect W Clearpass 100 Software