Podcast
Questions and Answers
What is the shortest fixed interframe space called?
What is the shortest fixed interframe space called?
- RTS
- PIFS
- SIFS (correct)
- DIFS
Which type of interframe spacing is used by Access Points to transition the network from DCF to PCF?
Which type of interframe spacing is used by Access Points to transition the network from DCF to PCF?
- SIFS
- DIFS
- RTS
- PIFS (correct)
Which interframe spacing has the highest priority among SIFS, PIFS, and DIFS?
Which interframe spacing has the highest priority among SIFS, PIFS, and DIFS?
- PIFS
- DIFS
- RTS
- SIFS (correct)
What does DIFS stand for in the context of interframe spacing?
What does DIFS stand for in the context of interframe spacing?
In which mode does the AP control which stations may transmit data?
In which mode does the AP control which stations may transmit data?
Which interframe space is neither the shortest nor the longest, getting priority between SIFS and DIFS?
Which interframe space is neither the shortest nor the longest, getting priority between SIFS and DIFS?
What type of contention method is used by IEEE 802.3 / Ethernet networks?
What type of contention method is used by IEEE 802.3 / Ethernet networks?
Which type of network uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)?
Which type of network uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)?
In CSMA/CD, what happens if a collision is detected while a node is transmitting?
In CSMA/CD, what happens if a collision is detected while a node is transmitting?
Why do wireless stations using CSMA/CA not detect collisions?
Why do wireless stations using CSMA/CA not detect collisions?
What does Interframe Spacing (IFS) ensure before a station can transmit a frame?
What does Interframe Spacing (IFS) ensure before a station can transmit a frame?
How does Interframe Spacing (IFS) provide priority access to certain frames?
How does Interframe Spacing (IFS) provide priority access to certain frames?
What is the Distributed Coordination Function (DCF) in wireless LAN?
What is the Distributed Coordination Function (DCF) in wireless LAN?
Why can't ad hoc networks utilize Point Coordination Function (PCF)?
Why can't ad hoc networks utilize Point Coordination Function (PCF)?
What is the primary advantage of Point Coordination Function (PCF) in wireless LAN?
What is the primary advantage of Point Coordination Function (PCF) in wireless LAN?
In the Point Coordination Function process, what happens when a wireless station tells the AP that it is capable of answering a poll?
In the Point Coordination Function process, what happens when a wireless station tells the AP that it is capable of answering a poll?
Which type of network can use the Distributed Coordination Function (DCF) mode in wireless LAN?
Which type of network can use the Distributed Coordination Function (DCF) mode in wireless LAN?
What is the main function of Access Points (APs) in wireless LAN with regard to data transmission?
What is the main function of Access Points (APs) in wireless LAN with regard to data transmission?
What is modulation coding?
What is modulation coding?
Which modulation techniques are used in 802.11 and 802.11b?
Which modulation techniques are used in 802.11 and 802.11b?
What is orthogonal frequency division multiplexing (OFDM)?
What is orthogonal frequency division multiplexing (OFDM)?
How do more complex signal encoding methods affect data rate and susceptibility to corruption?
How do more complex signal encoding methods affect data rate and susceptibility to corruption?
Which spreading codes are used in 802.11 and 802.11b?
Which spreading codes are used in 802.11 and 802.11b?
How do higher transmission speeds impact modulation techniques?
How do higher transmission speeds impact modulation techniques?
What is the purpose of the virtual carrier sense control message described in the text?
What is the purpose of the virtual carrier sense control message described in the text?
Which process involves a 4-way handshake and is illustrated in the text?
Which process involves a 4-way handshake and is illustrated in the text?
What happens to the data rate of a transmitting unit when distance increases between the AP and a station?
What happens to the data rate of a transmitting unit when distance increases between the AP and a station?
Which data rates are used for 802.11g OFDM according to the text?
Which data rates are used for 802.11g OFDM according to the text?
Why does a wireless LAN system never drop from 11 Mbps to 10 Mbps according to the text?
Why does a wireless LAN system never drop from 11 Mbps to 10 Mbps according to the text?
What triggers a wireless LAN client to drop its data rate according to the text?
What triggers a wireless LAN client to drop its data rate according to the text?
