quiz 11 Flashcards
A(n) ____ is a transceiver that connects to a network via an Ethernet cable; it bridges the wireless LAN with the wired network.
access point (AP)
A(n) ______________________________ is the name used to identify the wireless local area network (WLAN), much the same way a workgroup is used on a Windows network.
SSID
service set identifier
service set identifier (SSID)
SSID (service set identifier)
CSMA/CD is used at the data link layer on wireless networks.
False
Each frequency band contains ____; if they overlap, interference could occur.
channels
In 802.1X, what is an authentication server?
This server, which might be a Remote Access Dial-In User Service (RADIUS) server, is used as a centralized component that authenticates the user and performs accounting functions. For example, an ISP using RADIUS can verify who logged on to the ISP service and how long the user was connected. Most RADIUS servers are *nix based, but the Microsoft implementation of RADIUS is called Internet Authentication Service (IAS).
In 802.1X, a(n) ____ is the wireless user attempting access to a WLAN.
supplicant
In 802.11, an addressable unit is called a ____.
station (STA)
In a WPAN, the maximum distance allowed between each device is usually ____ meters.
10
In the 802.11 standard, a mobile station is defined as a station that accesses the LAN while moving; a(n) ____________________ station is one that can move from location to location, but is used only while in a
portable
It’s possible to have a wireless network that doesn’t connect to a wired network
True
this technology is restricted to a single room or line of sight
infrared (IR)
uses microwave radio band frequencies to transmit data
narrowband
data is spread across a large-frequency bandwidth instead of traveling across just one frequency band
spread spectrum
addresses the issue of wireless metropolitan area networks (MANs)
802.16
addresses wireless MANs for mobile users who are sitting in trains, subways, or cars
802.20
European WLAN standard
HiperLAN2
uses GFSK modulation
Bluetooth
uses DSSS modulation
802.11b
defines the process of authenticating and authorizing users on a network
802.1X
One of the default SSIDs used by D-Link is ____.
default
The 802.11 standard applies to the Physical layer of the OSI model, which deals with wireless connectivity issues of fixed, portable, and moving stations in a local area, and the Media Access Control (MAC) sublayer of the ____.
Data Link layer
The 802.11b standard introduced Wired Equivalent Privacy (WEP), which gave many users a false sense of security that data traversing the WLAN was protected.
True
The ____ band is used by commercial AM radio stations.
medium frequency (MF)
The ____ standard, also referred to as Wi-Fi, operates in the 2.4 GHz range with an increased throughput from 1 or 2 Mbps to 11 Mbps.
802.11b