Deck 6: Bluetooth Technology, Wireless Lan, and Iot Protocols and Concepts

Question 1

Bluetooth uses                      

A)frequency hopping spread spectrum
B)orthogonal frequency division multiplexing
C)time division multiplexing
D)channel division multiplexing

Answer 1

frequency hopping spread spectrum

Question 2

What is A2DP (advanced audio distribution profile)?

A)a bluetooth profile for streaming audio
B)a bluetooth profile for streaming video
C)a bluetooth profile for security
D)a bluetooth profile for file management

Answer 2

a bluetooth profile for streaming audio

Question 3

Bluetooth supports                

A)point-to-point connections
B)point-to-multipoint connection
C)both point-to-point connections and point- to-multipoint connection
D)multipoint to point connection

Answer 3

both point-to-point connections and point- to-multipoint connection

Question 4

A scatternet can have maximum

A)10 piconets
B)20 piconets
C)30 piconets
D)40 piconets

Question 5

What is the access point (AP) in a wireless LAN?

A)device that allows wireless devices to connect to a wired network
B)wireless devices itself
C)both device that allows wireless devices to connect to a wired network and wireless devices itself
D)all the nodes in the network

Question 6

Which protocol is used to link all the devices in the IoT?

A)tcp/ip
B)network
C)udp
D)http

Question 7

----------- enables seamless integration of LoWPAN devices with internet leveraging.

A)ietf 6lowpan
B)ieft coap
C)rfid/nfc
D)ieee 802.15.4.lowpan

Question 8

------------ enables open application layer for constrained nodes.

A)ietf 6lowpan
B)ieft coap
C)rfid/nfc
D)ieee 802.15.4.lowpan

Question 9

------------ tags, devices, smart phones useful in identification.

A)ietf 6lowpan
B)ieft coap
C)rfid/nfc
D)ieee 802.15.4.lowpan

Question 10

------------ supports low energy radio operation.

A)ietf 6lowpan
B)ieft coap
C)rfid/nfc
D)bluetooth

Question 11

------------- specification defining the PHY and MAC layer of low power devices.

A)ietf 6lowpan
B)ieft coap
C)rfid/nfc
D)ieee 802.15.4.lowpan

Question 12

----------  is an application layer protocol for resource constrained devices.

A)coap
B)hmtp
C)mqtt
D)tcp/ip

Question 13

Adheres to----------------  approach for managing resources and support mapping to HTTP.

A)retful
B)iot
C)restful.
D)restful

Question 14

---------------- resources are identified by Uniform Resource Identifiers.

A)coap
B)hmtp
C)mqtt
D)tcp/ip

Question 15

Which protocol interacts asynchronously over UDP?

A)hmtp
B)coap
C)mqtt
D)tcp/ip

Question 16

CoAP messages are short.

Question 17

How many messages types are there in CoAP?

A)2
B)5
C)3
D)4

Question 18

Number of methods in CoAP?

A)2
B)5
C)4
D)3

Question 19

A 4 byte IP address consists of

A)wired sensor network                      
B)wireless sensor network
C)wired service network
D)wireless service network