CH14 - Course Quiz Flashcards
The nodes that connect ad hoc in an IBSS randomly generate a ______________ string of number sthat looks and functions just like a MAC address?
64-byte
48-bit
48-byte
64-bit
48-bit
Which concept defines the most basic infrastructure mode network: a BSS of one WAP and one or more wireless clients?
extended service set (ESS)
basic service set (BSS)
basic service set identifier (BSSID)
independent basic service set (IBSS)
basic service set identifier (BSSID)
Which element did the WIFI developers create to use as another level of naming to apply to the BSS or IBSS to help the connection happen?
link state
supplicant
mode
service set identifier (SSID)
service set identifier (SSID)
Which type of unit is formed by a single wireless access point servicing a given area that has been extended by adding more access points?
basic service set (BSS)
basic service set identifier (BSSID)
extended service set (ESS)
independent basic service set (IBSS)
extended service set (ESS)
A Wireless Access Point (WAP) that can only be configured by a Wireless Controller is called a thick client?
True
False
False
Leightweight EAP (LEAP) is a proprietary EAP authentication used almost exclusively by Cisco Wireless Products?
True
False
True
_________ broadcasts data in small, discrete chunks over the different frequencies available within a certain frequency range?
Transmit beamforming
CSMA/CD
Channel Bonding
Spread-Spectrum
Spread-Spectrum
One of the big challenges to larger enterprise networks is the large number of clients that might be on a single ___________ at any given moment?
MAC Address
SSID
NIC
Router
SSID (Service Set Identifier)
Which Wireless Bridge can only communicate with a single other bridge and is used to connect two wireless network segments?
point-to-point
point-to-multipoint
omnidirectional
dipole
point-to-point
Which setting should be modified when there are overlapping WIFI signals?
channel and frequency
signal and link state
beacon and interframe gap
MAC address and NIC address
channel and frequency
Which term describes a method that enables an administrator to limit access to a network based on the physical address of Wireless NICs?
MAC Address Filtering
WEP
WPA
802.1X
MAC Address FIltering
Many wireless access points (WAPs) have removable device antennas?
True
False
True
Which term describes a portion of the available spectrum for WIFI network communications?
interframe space
frequency
channel
frame
channel
Whitelisting and blacklisting are labor-intensive processes, with whitelisting requiring far more work?
True
False
True
The _____________ standard established the baseline features common to all subsequent WIFI standards?
- 11
- 3
- 4
- 16
802.11
Provide examples of NON-WIFI source of RF interference. Explain why they are a problem to wireless networks and how to correct the problem?
It can come from natural phenomena like lightning and sun spots to a diverse of man-made sources like:
AM/FM Radio and TV Transmitters
Mobile Phones
Bluetooth SYstems
Microwaves
…among many others
The only way to eliminate this type of interference is to shut down or move the devices.
Briefly define the goodput of a wireless network and the concepts behind this factor?
Goodput is used to describe the number of packets that are exchanged between the applications that use the Network.
Commonly known as Throughput, measures the number of packets exchanged over the network to determine network efficiency.
Goodput is also described as measuring the Throughput at the Application Level.
Describe Channel Bonding?
Enables devices to use 2 channels for transmission to increase throughput.
Describe infrastructure mode as it pertains to wireless networking?
Uses a WAP (Wireless Access Point) that acts as a hub for all wireless clients.
Describe ad hoc mode as it pertains to wireless networking?
Two or more devices communicate Directly without any other intermediary hardware.
When an antenna strengthens and focuses the radio frequency (RF) output from a WAP, the ratio of increase is called __________?
gain
The process whereby nonmetallic building materials such as brick, sheetrock, and wood absorb radio signals, greatly reducing or in some cases eliminating a WIFI signal completely, is called ____________?
absorption
The IEEE ____________ standard defines both how wireless devices communicate and how to secure that communication?
802.11
_____________ is the current 802.11 collision avoidance method that specifies rules for sending data onto the network media?
Distributed Coordination Function (DCF)