MIS 505 FINAL EXAM ACCURATE EXAM SESSION
GRADED A (SUMMER- FALL SESSION)
Wireless LANs governed by - ANSWER: physical and data link layers
Wireless LANs use _______ for transmission - ANSWER: radio signals
Wi-Fi - ANSWER: Standards created by the 802.11 Working group
Primary function of access points - ANSWER: provide a centralized point for wireless
clients to connect to the LAN
handles frame level conversions and acts as a gatekeeper for two modes of
auth/security on a network
How does an access point work to connect a wireless client to an ethernet server -
ANSWER: Access point connects via UTP to an Ethernet workgroup switch, which
connects the client to rest of the site network
Signal Propagation for radios vs wired - ANSWER: Radio propagation is unreliable and
more complex to implement
Transcevers - ANSWER: radios for data transmission
Radio waves are described in terms of - ANSWER: frequency
Frequency - ANSWER: number of cycles per second
measured in Hz
Common frequency for wireless transceivers - ANSWER: 500MHz - 10GHz
Two types of antennas - ANSWER: omnidirectional
dish
Omnidirectional Antenna - ANSWER: issues and receives wireless signals with equal
strength and clarity in all directions.
used when many different receivers must be able to pick up the signal,
Used for short distances
Dish Antenna - ANSWER: - Focuses signals in a narrow range
- Signals can be sent over longer distances
- Must point at receiver
, To connect to an access point, users must know the... - ANSWER: service set ID (SSID)
Basic Service Set - ANSWER: access point and its wireless hosts
Extended Service set - ANSWER: group of BSS with the same SSID that connect via a
distribution system
Distribution system - ANSWER: switched ethernet network that access points use to
transmit messages
Roaming - ANSWER: traveling hosts that move from one BSS to another in the same
ESS
Media Access Control - ANSWER: govern when hosts and access points may transmit
so that collisions can be avoided
Collision - ANSWER: when two devices transmit in the same channel at the same
time, makes both signals unreadable
what is the role of the access point relative to the five layer model? - ANSWER: once
a radio wave is received by a access point, it converts it to unshielded twisted pair -
takes one standard, 802.11, converts it to 802.3
How does an access point handle frames headed to a server - ANSWER: - receives
802.11 frame
- takes packet out and puts it into an ethernet 802.3 frame
- sends new frame to server
- 802.11 frames are complex and use radio signals while 802.3 frames use cables
Wireless LANs are single networks and therefore - ANSWER: require physical and DLL
standards
OSI standards
Radio signals attenuate very... - ANSWER: Rapidly
Inverse Square Law Attenuation - ANSWER: Radio signal strength declines with the
square of transmission distance.
signal strength weakens in all directions as it spreads out
Absorptive Attenuation - ANSWER: Signal is absorbed by the air and water
reduces power substantially
GRADED A (SUMMER- FALL SESSION)
Wireless LANs governed by - ANSWER: physical and data link layers
Wireless LANs use _______ for transmission - ANSWER: radio signals
Wi-Fi - ANSWER: Standards created by the 802.11 Working group
Primary function of access points - ANSWER: provide a centralized point for wireless
clients to connect to the LAN
handles frame level conversions and acts as a gatekeeper for two modes of
auth/security on a network
How does an access point work to connect a wireless client to an ethernet server -
ANSWER: Access point connects via UTP to an Ethernet workgroup switch, which
connects the client to rest of the site network
Signal Propagation for radios vs wired - ANSWER: Radio propagation is unreliable and
more complex to implement
Transcevers - ANSWER: radios for data transmission
Radio waves are described in terms of - ANSWER: frequency
Frequency - ANSWER: number of cycles per second
measured in Hz
Common frequency for wireless transceivers - ANSWER: 500MHz - 10GHz
Two types of antennas - ANSWER: omnidirectional
dish
Omnidirectional Antenna - ANSWER: issues and receives wireless signals with equal
strength and clarity in all directions.
used when many different receivers must be able to pick up the signal,
Used for short distances
Dish Antenna - ANSWER: - Focuses signals in a narrow range
- Signals can be sent over longer distances
- Must point at receiver
, To connect to an access point, users must know the... - ANSWER: service set ID (SSID)
Basic Service Set - ANSWER: access point and its wireless hosts
Extended Service set - ANSWER: group of BSS with the same SSID that connect via a
distribution system
Distribution system - ANSWER: switched ethernet network that access points use to
transmit messages
Roaming - ANSWER: traveling hosts that move from one BSS to another in the same
ESS
Media Access Control - ANSWER: govern when hosts and access points may transmit
so that collisions can be avoided
Collision - ANSWER: when two devices transmit in the same channel at the same
time, makes both signals unreadable
what is the role of the access point relative to the five layer model? - ANSWER: once
a radio wave is received by a access point, it converts it to unshielded twisted pair -
takes one standard, 802.11, converts it to 802.3
How does an access point handle frames headed to a server - ANSWER: - receives
802.11 frame
- takes packet out and puts it into an ethernet 802.3 frame
- sends new frame to server
- 802.11 frames are complex and use radio signals while 802.3 frames use cables
Wireless LANs are single networks and therefore - ANSWER: require physical and DLL
standards
OSI standards
Radio signals attenuate very... - ANSWER: Rapidly
Inverse Square Law Attenuation - ANSWER: Radio signal strength declines with the
square of transmission distance.
signal strength weakens in all directions as it spreads out
Absorptive Attenuation - ANSWER: Signal is absorbed by the air and water
reduces power substantially
