WorksheetsSRWC- Unit 1- Quiz
Total questions: 15
Worksheet time: 8mins
What is one of the hottest applications of short-range radio communication?
Ultra-wideband Technology
Bluetooth
Wireless Local Area Networks (WLAN)
Zigbee
What are three main challenges faced by a person while setting up a wireless network at his/her home?
Interference, Signal loss, Power consumption
Cost, Complexity, Maintenance
Range limitation, Susceptibility to electro magnetic interference, Security
Speed limitation, Weather interference, Compatibility
What is the generic name for all devices based on the IEEE specification 802.11 and its derivatives?
Bluetooth
Zigbee
Wi-Fi
Ultra-wideband Technology
What does the MAC interface firmware take care of in wireless communication?
Wireless communication techniques
Interfaces between software and hardware
Data link layer
Physical layer hardware definitions
What is the basic building block of an 802.11 WLAN?
Medium access control (MAC)
Wireless Fidelity (Wi-Fi)
Basic service sets (BSS)
Extended service set (ESS)
What does the distributed system in wireless communication allow?
Interconnect terminals in direct range
Communicate with other terminals outside the range
Connect STAs with the APs
Support data exchange between all terminals in the network
What is the predominant industrial standard for WLAN?
Bluetooth
Zigbee
Wi-Fi
Ultra-wideband Technology
What does the 802.11 specification define in wireless communication?
Upper application software requirements
MAC interface firmware responsibilities
Wireless communication techniques
Data link layer, Physical layer hardware definitions, Interfaces between them
In a piconet, how many slaves can one master communicate with directly?
One to three
One to five
One to seven
One to ten
What is a scatternet in the context of Bluetooth networks?
A single piconet with multiple masters
A network where slaves can communicate directly
A basic Bluetooth network with no limit on the number of devices
An interrelated network of piconets where any member of a piconet may also belong to an adjacent piconet
Which Bluetooth mode increases sleep time because the slave knows in advance the time interval between slots during which the master may address it?
Active mode
Sniff mode
Hold mode
Park mode
What happens to a Bluetooth slave device in hold mode?
It increases its sleep time because it knows the time interval between slots.
It can transmit without being specifically addressed by the master.
It continues listening during subsequent master transmission slots as long as it is addressed.
It is free to enter a low-power state or participate in another piconet.
What is the purpose of the preamble in a Zigbee transmission?
To notify the receiver of the length of the subsequent data
To permit acquisition of chip and symbol timing
To signal the start of the frame
To perform an independent calculation of the frame check sequence
What ensures the reliability of the received PSDU (PHY service data unit)?
The preamble acquisition
The frame check sequence comparison
The Start-of-frame delimiter (SFD)
The PHY header (PHR)
What does the PHY header (PHR) notify the baseband software in the receiver?
The sequence number of the message
The address information of the sender
The acquisition of chip and symbol timing
The length of the subsequent data
