1) What are the forms of energy that are converted by an antenna as a transducer?
solution) a) electromagnetic energy , electric signal.
2) Which of the following sensors is/are passive in nature?
solution) b) temperature sensors
3) __________ sensors provide a continuous function as output in response to an input analog sensor.
solution) c) analog sensor
4) Which of the following standards is/ are used in wireless personal area network ( WPAN ) ?
solution) a) IEEE 802.15.4
5) A Zigbee can operate on how many frequencies?
solution) c) 3
6) what is the size of a Zigbee data packet?
solution) c) 128 bytes
7) Which of the following Zigbee devices do not contribute in routing?
solution) b) end device
8) What method is used by 6LowPAN for encapsulating a whole IPv6 packet into IEEE802.15.4 frame?
solution) a) fragmentation
9) What is the modulation technique used in wireless HART?
solution) b) OQPSK
10) Which of the following is/are QoS policy/ policies for IOT networks?
solution) d) all of the above
11) What does MQTT stand for?
solution) a) message queue telemetry transport.
12) How many types of messages are defined by CoAP?
solution) c) 4 types
13) Which of the following supports Publish/ Subscribe messaging framework on top of TCP protocol?
solution) c) XMPP
14) How many types of message delivery guarantee services are provided by AMPQ?
solution) a)1
15) DDS RTPS Supports Publish/Subscribe framework and on top of UDP transport layer protocol.
solution) a) true
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