Question 1

The WHDI consortium developed the WHDI specification primarily for the delivery of data produced from online database queries.

Accepted Answer

The WHDI consortium developed the WHDI (Wireless Home Digital Interface) specification for the wireless transmission of high-definition video and audio. It is not primarily designed for the delivery of data produced from online database queries.

Question 2

The DSPS power saving mode allows devices to sleep for long periods of time until they choose to wake up and listen to a beacon.

Accepted Answer

False

Question 3

Which of the following is NOT an HR WPAN feature provided by the 802.15.3 MAC layer?
A) uses a one-octet device ID
B) PNC can be queried about other devices
C) data transport includes QoS
D) infrastructure mode networking is supported

Accepted Answer

Infrastructure mode networking is not supported by the 802.15.3 MAC layer. However, it does provide features such as using a one-octet device ID, allowing PNC to be queried about other devices, and data transport with QoS.

Question 4

In which frequency range does WHDI operate?
A) 2.4 GHz
B) 800 MHz
C) 5 GHz
D) 400 KHz

Accepted Answer

WHDI operates in the 5 GHz frequency range, which provides a higher bandwidth and better resistance to interference compared to lower frequency bands like 2.4 GHz or 800 MHz. This makes it a suitable choice for wireless HDMI transmission with high-quality video and audio signals. Answer A and D are incorrect as they are too low for effective wireless transmission, and answer B is not optimal for high-quality video and audio signals.

Question 5

The piconet coordinator in a WirelessHD network should be a battery operated device for mobility.

Accepted Answer

The piconet coordinator in a WirelessHD network is typically a fixed device that is connected to a power source, such as an AC outlet. It is not designed to be mobile or battery operated.

Question 6

IEEE 802.15 covers all the WPAN working groups.

Accepted Answer

IEEE 802.15 is the standard for Wireless Personal Area Networks (WPANs) and it covers all the WPAN working groups.

Question 7

UWB is capable of handling multiple data streams, including HD television.

Accepted Answer

Ultra-wideband (UWB) technology has the ability to handle multiple data streams simultaneously, including high-definition (HD) television.

Question 8

Which of the following is NOT a 802.15.3c PHY layer enhancement?
A) passive scanning
B) parity bit error detection
C) channel energy detection
D) transmit power control

Accepted Answer

Passive scanning, channel energy detection, and transmit power control are all enhancements that were introduced in the 802.15.3c PHY layer. However, parity bit error detection is already a standard error detection technique and not a new enhancement introduced in 802.15.3c.

Question 9

Which of the following is described as a piconet that has its own PNC but depends on the original piconet's PNC to allocate a private block of time when its devices are allowed to transmit?
A) child piconet
B) parent piconet
C) neighbor piconet
D) subordinate piconet

Accepted Answer

The answer of Which of the following is described as...

Question 10

What does WiGig use to maintain reliable connections at very high frequencies?
A) single-carrier modulation
B) beamforming
C) OFDM
D) protocol adaptation layers

Accepted Answer

WiGig uses beamforming to maintain reliable connections at very high frequencies. Beamforming is a technique that focuses a wireless signal in a specific direction, which helps to mitigate signal loss and interference at higher frequencies.

Question 11

Which field of the 802.15.3 MAC frame format is used to reassemble a file in the correct sequence?
A) Frame control
B) Piconet ID
C) Fragmentation control
D) Stream index

Accepted Answer

The Fragmentation control field in the 802.15.3 MAC frame format is used to reassemble a file in the correct sequence. This field contains information about the fragmentation of the original file and helps the receiver to put the fragments back in the right order.

Question 12

What type of transmission method does an 802.15.3 piconet use during the CTAP?
A) SDMA
B) TDMA
C) FDMA
D) CDMA

Accepted Answer

An 802.15.3 piconet uses TDMA (Time Division Multiple Access) during the CTAP (Connectionless Trafﬁc and Acquisition Period) for transmitting data between different devices in the network. TDMA divides the allocated bandwidth into time slots and each device is assigned a specific time slot for sending data. This allows multiple devices to share the same frequency band without interfering with each other's transmissions.

Question 13

Which 802.15.3 power-saving methods allows devices to sleep for the duration of several superframes and allows them to wake up in the middle of a superframe to transmit or receive data?
A) PSPS
B) APS
C) PSPS.
D) APCI

Accepted Answer

PSPS, or Power Save Protocol Service, is designed to allow devices to enter a low-power sleep mode for the duration of several superframes. Devices can wake up at predetermined times within a superframe to transmit or receive data, making it an efficient power-saving method for devices that do not need to be constantly active.

Question 14

What technique does WirelessHD employ to support data rates over 25 Gbps?
A) LRP
B) spatial multiplexing
C) HDMI
D) beamforming

Accepted Answer

The answer of What technique does WirelessHD employ to support...

Question 15

Which of the following is true about WiGig?
A) it is compatible with 802.11ac
B) it requires layer 3 and 4 protocols for audiovisual support
C) makes use of technology designed by AMIMON
D) it has adopted the 802.15.3c standard for multimedia distribution

Accepted Answer

WiGig is compatible with 802.11ac, which is a standard for high-speed wireless networking. Option B is incorrect because WiGig does not require layer 3 and 4 protocols for audiovisual support. Option C is also incorrect because WiGig uses technology developed by the Wi-Fi Alliance, not AMIMON. Finally, option D is incorrect because WiGig has its own standard for multimedia distribution, which is separate from the 802.15 family of standards.

Question 16

Which of the following is true about a WVAN piconet?
A) the piconet relies on an access point
B) the PNC is typically a mobile device such as a tablet computer
C) large non-mobile devices like TVs are not part of a piconet
D) the PNC is the first sink device in the area

Accepted Answer

The answer of Which of the following is true about...

Question 17

Which radio band does the 802.15.3c standard use?
A) 5.0 GHz
B) 60 GHz
C) 2.4 GHz
D) p00 MHz

Accepted Answer

The 802.15.3c standard uses the 60 GHz radio band, often referred to as the mmWave band. This frequency range allows for high data rates but has limited range and can experience interference from physical obstacles.

Question 18

Which IEEE standard enables multimedia connectivity between mobile and fixed consumer devices within the home?
A) 802.15.3c
B) 802.15.5
C) 802.15.1
D) 802.15.4

Accepted Answer

IEEE 802.15.3c is the standard for high-data-rate wireless personal area networks (WPANs) and provides multimedia connectivity between mobile and fixed consumer devices within the home. The other options (B, C, and D) are also WPAN standards, but they do not specifically address multimedia connectivity within the home.

Question 19

Which part of an 802.15.3 superframe is used for association and command communication?
A) contention access period
B) beacon
C) channel time allocation period
D) management channel time allocation

Accepted Answer

The answer of Which part of an 802.15.3 superframe is...

Question 20

How many channels and what is the width of each 802.15.3c channel?
A) 4, 2 GHz
B) 6, 200 MHz
C) 11, 25 MHz
D) 14, 50 MHz

Accepted Answer

IEEE 802.15.3c specifies 4 channels, each with a width of 2 GHz.

Quiz 6: High-Rate Wireless Personal Area Networks

The WHDI consortium developed the WHDI specification primarily for the delivery of data produced from online database queries.

The DSPS power saving mode allows devices to sleep for long periods of time until they choose to wake up and listen to a beacon.

Which of the following is NOT an HR WPAN feature provided by the 802.15.3 MAC layer?

In which frequency range does WHDI operate?

The piconet coordinator in a WirelessHD network should be a battery operated device for mobility.

IEEE 802.15 covers all the WPAN working groups.

UWB is capable of handling multiple data streams, including HD television.

Which of the following is NOT a 802.15.3c PHY layer enhancement?

Which of the following is described as a piconet that has its own PNC but depends on the original piconet's PNC to allocate a private block of time when its devices are allowed to transmit?

What does WiGig use to maintain reliable connections at very high frequencies?

Which field of the 802.15.3 MAC frame format is used to reassemble a file in the correct sequence?

What type of transmission method does an 802.15.3 piconet use during the CTAP?

Which 802.15.3 power-saving methods allows devices to sleep for the duration of several superframes and allows them to wake up in the middle of a superframe to transmit or receive data?

What technique does WirelessHD employ to support data rates over 25 Gbps?

Which of the following is true about WiGig?

Which of the following is true about a WVAN piconet?

Which radio band does the 802.15.3c standard use?

Which IEEE standard enables multimedia connectivity between mobile and fixed consumer devices within the home?

Which part of an 802.15.3 superframe is used for association and command communication?

How many channels and what is the width of each 802.15.3c channel?