NEW
Font size
WorksheetsWCM Chapter6 WPAN_BL
Total questions: 51
Worksheet time: 26mins
What does WPAN stand for?
Wireless Personal Area Network
Wide Personal Area Network
Wired Personal Area Network
Wide Public Area Network
Which device acts as the internet router in WPAN?
Master Device
Personal Device
Internet Device
Bluetooth Device
What is the range of communication in WPANs?
Within 10 meters
Within 20 meters
Within 30 meters
Within 40 meters
Which standard are Bluetooth WPANs based on?
IEEE 802.15.1
IEEE 802.11
IEEE 802.3
IEEE 802.16
Which standard are ZigBee WPANs based on?
IEEE 802.15.4
IEEE 802.15.1
IEEE 802.3
IEEE 802.11
What is the data throughput of ZigBee WPANs?
< 0.25 Mbps
1 Mbps
10 Mbps
100Mbps
What is the data throughput of Bluetooth WPANs?
<0.25 Mbps
1 Mbps
10 Mbps
100 Mbps
What is a WPAN?
A network for interconnecting devices centred on an individual person's workspace in which the connections are wired
A network for interconnecting devices centred on an individual person's workspace in which the connections are wireless
A network for interconnecting devices centred on an individual person's workspace in which the connections are both wired and wireless
None of the mention
What is the objective of a WPAN?
To facilitate seamless operation among home or business devices and systems
To restrict communication amongst the personal devices themselves
To restrict the connection to the Internet and other networks
None of the mention
Which of the following frequency ranges are included in the ISM band used by Bluetooth technology?
700-800 MHz and 3-3.5 GHz
902-928 MHz and 2.4-2.484 GHz
1.8-1.9 GHz and 5-6 GHz
2-2.2 GHz and 4.5-5.1 GHz
Which of the following technologies is used by Bluetooth radio for transmission over the 2.4 GHz RF band?
Frequency Modulation
Amplitude Modulation
Gaussian Frequency Shift Keying
Pulse Code Modulation
What is the maximum range of point-to-point communication in Class 1 Bluetooth devices?
5-10 meters
20-30 meters
50-60 meters
100 meters
Which of the following is a characteristic feature of the Bluetooth baseband protocol?
Only supports circuit switching
Only supports packet switching
Supports both circuit and packet switching
Does not support voice communication
Which of the following is an advantage of using Bluetooth technology for data transfer?
Requires clear line of sight for communication
Can only be used for short-range communication
Can only handle either Data or Voice, but not both
Operates over a longer distance than infrared
What is the main advantage of using Bluetooth technology for home networking?
High cost
Low reliability
No need for set up
Requires a clear line of sight
What is the frequency range of the Unlicensed ISM Radio Band utilized by Bluetooth technology?
1.9 – 2.2 GHz
2.4 – 2.484 GHz
3.1 – 3.5 GHz
5.5 – 5.9 GHz
What is the advantage of Bluetooth over Infrared technology?
Can be used for home networking
Lower cost
Does not require a clear line of sight
All of the mention
Which protocol is used by Bluetooth to establish connections?
Circuit switching
Packet switching
Both mention
Neither mention
What kind of data can be transferred using Bluetooth technology?
Only voice
Only data
Both mention
Neither mention
What is the maximum number of devices a Piconet can contain?
4
8
10
12
How many devices can carry full duplex voice transmission in a Piconet?
1
2
3
4
Can a device belong to multiple Piconets simultaneously?
Yes
No
How many Piconets can be included in a single Scatternet?
5
8
10
12
Can multiple Piconets share the same physical space without interfering with each other?
Yes
No
How does Scatternet function?
By connecting multiple Piconets together
By dividing a single Piconet into smaller ones
By enabling data exchange between different devices within a single Piconet
By establishing a direct link between two devices
What is the maximum number of Bluetooth devices that can be included in a single 'Scatternet'?
80 devices
90 devices
100 devices
110 devices
In a 'Piconet', which device serves as the 'Master'?
The first device that establishes a connection
The device with the highest signal strength
The device with the lowest MAC address
Any one device that is elected to be the 'Master'
Why are there currently very few implementations of Scatternet?
Because Bluetooth and the MAC address protocol have limitations.
Because Scatternet is too complicated for most users.
Because it is difficult to find devices that are compatible with Scatternet.
Because Scatternet is not a practical way to connect devices.
Which device can relay data between members of two different Piconets in a Scatternet?
The device with the lowest Bluetooth version
The device with the strongest Bluetooth signal
Any device that is participating in both Piconets
The device with the highest Bluetooth version
In Bluetooth technology, how many states can a device operate in?
One
Two
Three
Four
Which of the following is the most power-saving mode in Bluetooth technology?
Active
Sniff
Hold
Park
In which Bluetooth connection mode does a device listen to the 'Piconet' at a reduced rate, thus lowering its power consumption?
Active
Sniff
Hold
Park
What is the maximum theoretical number of parked slaves that can be connected to a single master in Bluetooth technology?
1
7
255
unlimited
When a Bluetooth device is in 'Hold' mode, what remains active in the device?
Its data transfer needs
Its internal timer
Its power-saving mode
Its Bluetooth connection
When a device is not connected or if it is connected but not actively involved with other devices, which state is it operated in?
Active
Sniff
Hold
Standby
Which of the following states of a Bluetooth device is a power-saving mode?
Connection state
Sniff mode
Active mode
Hold mode
When is a device in 'Active' mode in a Piconet?
When it is connected to another device
When it is listening to the Piconet at a reduced rate
When it is participating actively in the Piconet, either transmitting or receiving
When no data needs to be transmitted
What is the purpose of the 'Sniff' mode in Bluetooth devices?
To actively participate in a Piconet
To reduce power consumption by listening to the Piconet at a reduced rate
To hold the device when no data needs to be transmitted
To stay connected to a Piconet but not participate in the ongoing data traffic
When a device is in 'Hold' mode in a Piconet, what remains active?
The device's internal timer
The device's MAC address
The device's active member address
The device's parked member address
What is the purpose of the 'Park' mode in Bluetooth devices?
To actively participate in a Piconet
To reduce power consumption by listening to the Piconet at a reduced rate
To hold the device when no data needs to be transmitted
To stay connected to a Piconet but not participate in the ongoing data traffic
Which layer in the Bluetooth protocol stack defines the frequency, power, and modulation used by Bluetooth antennas?
Middleware Layer
Baseband and Link Layers
Radio Layer
Bluetooth Transport Layer
How many channels does Bluetooth occupy in the 2.4 GHz spectrum?
72
79
84
89
Which link allocates a fixed bandwidth for point-to-point connection in Bluetooth?
Asynchronous Connectionless (ACL) link
Telephony Control Protocol Specification (TCS)
Synchronous Connection-Oriented (SCO) link
Object Exchange Protocol (OBEX)
What is the maximum data rate of Bluetooth that offers when all packet overhead is taken into account?
723 kbps
1 Mbps
1.5 Mbps
2 Mbps
What is the required bit-error rate (BER) for Bluetooth receivers?
1%
0.1%
0.01%
0.001%
Which of the following is a requirement for all Bluetooth devices?
Implementing the middleware layer in hardware
A bit-error rate (BER) of 0.5% or less
Using Frequency Hopping to switch between channels
Output power of 5mW to 50mW
What is the maximum data rate offered by Bluetooth 1.0?
1Mbps
2Mbps
3Mbps
4Mbps
What is the role of the Link Manager layer in the Bluetooth stack?
To dictate the frequency, power, and modulation used by Bluetooth antennas
To form Piconets and Scatternets
To provide TCP- and UDP-like features to ACL links
To encapsulate Ethernet packets in Bluetooth packets
Which type of link is used primarily for carrying real-time data like speech and audio?
Synchronous Connection-Oriented (SCO) link
Asynchronous Connectionless (ACL) link
Logical Link Control and Adaptation Protocol (L2CAP)
Bluetooth Network Encapsulation Protocol (BNEP)
What does RFCOMM do in the Bluetooth stack?
Dictates the frequency, power, and modulation used by Bluetooth antennas
Provides TCP- and UDP-like features to ACL links
Encapsulates Ethernet packets in Bluetooth packets
Emulates IrDA infrared links on top of L2CAP
Which of the following protocols is not a Core Protocol utilized in the Bluetooth stack?
Service Discovery Protocol (SDP)
Link Manager Protocol (LMP)
Telephony Control Specification-Binary (TCS-BIN)
Object Exchange Protocol (OBEX)
