Deck 11: Mac and PHY Standards and Zigbee Technology

Question 1

Which of the following is not the job of iEEE 802.15.4 MAC standard

A)channel acquisition
B)data transparency
C)nic address
D)error correction

Answer 1

data transparency

Question 2

Which of the following is the job of iEEE 802.15.4 PHY standard

A)channel acquisition
B)contention management
C)power management
D)error correction

Answer 2

power management

Question 3

Size of guard band is larges in case of ____________

A)2.4ghz ism band
B)915mhz ism band
C)european 868mhz band.
D)same in all cases

Answer 3

2.4ghz ism band

Question 4

Following device class is able to be a Network coordinator

A)full function device (ffd)
B)reduced function device (rfd)
C)both are capable
D)any of them can not be

Question 5

Following device class is able to talk to any other device

A)full function device (ffd)
B)reduced function device (rfd)
C)both are capable
D)none of above

Question 6

Select correct statement about Full function device (FFD)

A)limited to star topology
B)cannot become a network coordinator
C)talks only to a network coordinator
D)can be used in star, tree and mesh topology

Question 7

Select correct statement about Reduced function device (RFD)

A)can be used in tree topology
B)talks to network coordinator only
C)talks to any other device
D)capable to be a network coordinator

Question 8

Device class of Full function device (FFD) is used in

A)star topology only
B)tree topology only
C)mesh topology only
D)any of the above topology

Question 9

_________ MAC frame serve to announce the presence of a wireless LAN and to synchronize the members of the service set.

A)data frame
B)beacon frame
C)acknowledgment frame
D)mac command frame

Question 10

_________ MAC frame serve as the control frame.

A)data frame
B)beacon frame
C)acknowledgment frame
D)mac command frame

Question 11

_________ MAC frame is also called as Management frame.

A)data frame
B)beacon frame
C)acknowledgment frame
D)mac command frame

Question 12

In 802.15.4 standard Beacon frames are transmitted by coordinator

A)at the start
B)periodically
C)randomly
D)when new device detected

Question 13

The date available from sensor node is of type

A)periodic data
B)intermittent data
C)repetitive low latency data
D)a and b both

Question 14

Select incorrect statement about ZigBee standard.

A)zigbee is a low-power, low data rate
B)zigbee is a low data rate, and close proximity
C)less expensive than other wpans
D)limits transmission distances to 1-10 km beyond line of sight,

Question 15

Select correct statement.

A)zigbee standard is a low-power, high data rate
B)zigbee standard s a low data rate, and wide area coverage
C)zigbee is most expensive than other wpans
D)zigbee limits transmission distances to 10-100 meters, in line of sight,

Question 16

Following is not the function of ZigBee used with iEEE 802.15.4 standard

A)network routing
B)address translation
C)channel acquisition
D)packet segmentation

Question 17

Number of nodes possible with ZigBee network are

A)10
B)100
C)1024
D)64000

Question 18

Date rate of 250 kbps is maximum for ________ technology.

A)bluetooth
B)zigbee
C)iEEE 802.11
D)a and b both

Question 19

Life of ZigBee devices w.r.t. power consumption is in ________

A)hours
B)days
C)years
D)4 weeks

Question 20

Range of ZigBee standard devices is

A)1- 10 meters
B)50- 100 meters
C)cms to 1 meter
D)100-500 meters

Question 21

Low data rate standard used for WPAN is

A)iEEE 802.15.1
B)iEEE 802.15.4
C)iEEE 802.15.3
D)iEEE 802.11

Question 22

High data rate standard used for WPAN is

A)iEEE 802.15.1
B)iEEE 802.15.4
C)iEEE 802.15.3
D)iEEE 802.11

Question 23

ZigBee 915 MHz ISM band has data rate of

A)20kbps
B)40kbps
C)250bps
D)all of above

Question 24

ZigBee 868 MHz band has data rate of

A)20kbps
B)40kbps
C)250bps
D)all of above

Question 25

ZigBee 2.4GHz ISM band has data rate of

A)20kbps
B)40kbps
C)250bps
D)all of above