MCQOPTIONS
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MCQOPTIONS
This section includes 389 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics and Telecommunication Engineering [ENT knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
In Bluetooth, the current data rate is ____Mbps |
| A. | 2 |
| B. | 5 |
| C. | 11 |
| D. | none of the above |
| Answer» E. | |
| 102. |
A Bluetooth network consists of _____ primary device(s) and up to ____ secondary devices. |
| A. | one; five |
| B. | five; three |
| C. | two; six |
| D. | one; seven |
| Answer» E. | |
| 103. |
IEEE has defined the specifications for a wireless LAN called _______, which covers the physical and data link layers. |
| A. | ieee 802.3 |
| B. | ieee 802.5 |
| C. | ieee 802.11 |
| D. | ieee 802.2 |
| Answer» D. ieee 802.2 | |
| 104. |
Bluetooth is a _______ technology that connects devices (called gadgets) in a small area. |
| A. | wired lan |
| B. | wireless lan |
| C. | vlan |
| D. | none of the above |
| Answer» C. vlan | |
| 105. |
In Bluetooth, multiple ________ form a network called a _________. |
| A. | scatternet; piconets |
| B. | piconets: scatternet |
| C. | piconets: bluenet |
| D. | bluenet; scatternet |
| Answer» C. piconets: bluenet | |
| 106. |
In IEEE 802.11, a ___ is made of stationary or mobile wireless stations and an optional central base station, known as the access point (AP). |
| A. | ess |
| B. | bss |
| C. | css |
| D. | none of the above |
| Answer» C. css | |
| 107. |
Piconets in bluetooth have a minimum of two and a maximum of ____________ Bluetooth peer devices. |
| A. | five |
| B. | nine |
| C. | eight |
| D. | twelve |
| Answer» D. twelve | |
| 108. |
This is a specification for a set of communication protocols to standardize the way that wireless devices can be used for Internet access. |
| A. | wap |
| B. | wax |
| C. | vsat |
| D. | tetra |
| Answer» B. wax | |
| 109. |
This is an industry specification that describes how mobile phones, computers, and PDAs can easily interconnect with each other using a short-range wireless connection. |
| A. | bluetooth |
| B. | emi |
| C. | d-amps |
| D. | irda |
| Answer» B. emi | |
| 110. |
Which of the following refers to a communications specification that was approved in early 2002 by the Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) for wireless personal area networks (WPANs)? |
| A. | 802.11a |
| B. | 802.15 |
| C. | 802.11b |
| D. | none of the above |
| Answer» C. 802.11b | |
| 111. |
This is the family of specifications for wireless local area networks (WLANs) developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). |
| A. | 3g |
| B. | 802.11 |
| C. | 802.3 |
| D. | 802.5 |
| Answer» C. 802.3 | |
| 112. |
WiMAX provides you? |
| A. | full duplex communication |
| B. | half duplex communication |
| C. | simplex communication |
| D. | duplex communication |
| Answer» B. half duplex communication | |
| 113. |
Bluetooth have ____ frequency. |
| A. | 2.4 mhz |
| B. | 2.4 ghz |
| C. | 5.0 ghz |
| D. | 5.0 mhz |
| Answer» C. 5.0 ghz | |
| 114. |
The Bluetooth network is called as |
| A. | piconet |
| B. | bluenet |
| C. | sctternet |
| D. | toothnet |
| Answer» B. bluenet | |
| 115. |
The _____ layer is roughly equivalent to the MAC sub layer in bluetooth. |
| A. | l2cap |
| B. | radio |
| C. | baseband |
| D. | none of the above |
| Answer» D. none of the above | |
| 116. |
What is the method of access in bluetooth? |
| A. | cdma |
| B. | fdma |
| C. | tdd-tdma |
| D. | cd |
| Answer» D. cd | |
| 117. |
Responsibilities of the data link layer are __ |
| A. | multiplexing of data streams |
| B. | data frame detection |
| C. | medium access (mac) & error control. |
| D. | all of above |
| Answer» E. | |
| 118. |
As the energy used in transmission ___________, the probability of error ___________, and the number of retransmissions _________. |
| A. | increases, decreases, increases |
| B. | decreases, decreases, increases |
| C. | decreases, decreases, decreases |
| D. | increases, decreases, decreases |
| Answer» E. | |
| 119. |
At the physical layer, contribute to energy loss in a wireless transmission, the loss is |
| A. | due to the channel and the fixed energy cost |
| B. | due to run of the transmission and reception circuitry |
| C. | both |
| D. | neither a nor b |
| Answer» D. neither a nor b | |
| 120. |
Wibree Nokia’s short-range wireless connection which is similar and compatible to Bluetooth is |
| A. | equally energy efficient as bluetooth |
| B. | less energy efficient than bluetooth |
| C. | more energy efficient than bluetooth |
| D. | cannot relate energy efficiency |
| Answer» D. cannot relate energy efficiency | |
| 121. |
Wireless HART communication protocol able to work on distances up to ____________ |
| A. | 100 m |
| B. | 1500 m |
| C. | 50 m |
| D. | 500 m |
| Answer» C. 50 m | |
| 122. |
Z-Wave uses a ______ bit identifier |
| A. | 16 |
| B. | 8 |
| C. | 32 |
| D. | 24 |
| Answer» D. 24 | |
| 123. |
In case of Z wave network, ______ node can act as repeater. |
| A. | routing slaves |
| B. | controllers |
| C. | slaves |
| D. | a and b both |
| Answer» E. | |
| 124. |
In case of Z wave network, ______ node has complete map and calculate routes |
| A. | routing slaves |
| B. | controllers |
| C. | slaves |
| D. | a and b both |
| Answer» C. slaves | |
| 125. |
The Z-Wave Network is of the ______ architecture |
| A. | star |
| B. | tree |
| C. | mesh |
| D. | peer to peer |
| Answer» D. peer to peer | |
| 126. |
A Z-Wave network can consist of ____________ nodes to the max. |
| A. | 121 |
| B. | 232 |
| C. | 10 |
| D. | 64 |
| Answer» C. 10 | |
| 127. |
The objective of the cross-layer protocol in WSN is |
| A. | highly reliable communication with minimal energy consumption |
| B. | adaptive communication decisions |
| C. | local congestion avoidance. |
| D. | all of the bove |
| Answer» E. | |
| 128. |
IEEE 802.15.4 ANT presents a data rate of |
| A. | 10 kbit/sec |
| B. | 100 kbit/sec |
| C. | 1 mbit/sec |
| D. | 250 kbit/sec |
| Answer» D. 250 kbit/sec | |
| 129. |
FSK modulation technique is used in ______- standard. |
| A. | wavenis |
| B. | insteon |
| C. | zigbee |
| D. | bluetooth |
| Answer» C. zigbee | |
| 130. |
Feature of IEEE 802.15.3 is |
| A. | low data rate and low power |
| B. | high data rate and high power |
| C. | high data rate and low power |
| D. | low data rate and high power |
| Answer» D. low data rate and high power | |
| 131. |
Standard to be used for virtual wireless multimedia connectivity is |
| A. | ieee 802.15.4 and zigbee alliance |
| B. | ieee 802.15.3 |
| C. | ieee 802.15.1 with bluetooth |
| D. | none of above |
| Answer» C. ieee 802.15.1 with bluetooth | |
| 132. |
_________ provides IP communication capability to nodes in WSN. |
| A. | isa100.11a |
| B. | zigbee |
| C. | 6lowpan |
| D. | bluetooth |
| Answer» D. bluetooth | |
| 133. |
ISA100.11a protocol stack includes following layers: |
| A. | physical layer, data link layer, network layer and transport layer. |
| B. | physical layer, data link layer, network layer, transport layer and application layer. |
| C. | data link layer, network layer, transport layer and application layer. |
| D. | physical layer, data link layer, network layer and application layer. |
| Answer» C. data link layer, network layer, transport layer and application layer. | |
| 134. |
ISA100.11a is a wireless networking technology standard where ISA stands for |
| A. | international security addressing |
| B. | international society of addressing |
| C. | international society of automation |
| D. | international security for automation |
| Answer» D. international security for automation | |
| 135. |
Wireless HART is based on |
| A. | ieee 802.15.3-2006, 2.4ghz ism band |
| B. | ieee 802.15.4-2006, 2.4ghz ism band |
| C. | ieee 802.15.4-2006, 915 mhz ism band |
| D. | ieee 802.15.3-2006, 915 mhz ism band |
| Answer» C. ieee 802.15.4-2006, 915 mhz ism band | |
| 136. |
Wireless Technology having bandwidth of up to 54 Mbps is |
| A. | zigbee |
| B. | wi-fi |
| C. | bluetooth |
| D. | none of above |
| Answer» C. bluetooth | |
| 137. |
WirelessHART is stands for |
| A. | high area remote transducer protocol |
| B. | highway area remote transducer protocol |
| C. | highway addressable remote transducer protocol |
| D. | higher address remote transfer protocol |
| Answer» D. higher address remote transfer protocol | |
| 138. |
Wireless Technology having bandwidth of 250 Kbps is |
| A. | zigbee |
| B. | wi-fi |
| C. | bluetooth |
| D. | none of above |
| Answer» B. wi-fi | |
| 139. |
Wireless Technology having bandwidth of 1 Mbps is |
| A. | zigbee |
| B. | wi-fi |
| C. | bluetooth |
| D. | none of above |
| Answer» D. none of above | |
| 140. |
Type of ZigBee participate in multi-hop routing of message is |
| A. | zigbee coordinator |
| B. | zigbee router |
| C. | zigbee end device |
| D. | a and b both |
| Answer» E. | |
| 141. |
Function of MAC layer in ZigBee alliance is |
| A. | modulation and demodulation |
| B. | transmits the beacon frames |
| C. | end device connection and disconnection |
| D. | network setup |
| Answer» C. end device connection and disconnection | |
| 142. |
Following layer of ZigBee is shared FOR alliance with IEEE 802.15.4 |
| A. | network layer |
| B. | data link layer |
| C. | application layer |
| D. | mac layer |
| Answer» E. | |
| 143. |
ZigBee 2.4GHz ISM band has data rate of |
| A. | 20kbps |
| B. | 40kbps |
| C. | 250bps |
| D. | all of above |
| Answer» B. 40kbps | |
| 144. |
ZigBee 868 MHz band has data rate of |
| A. | 20kbps |
| B. | 40kbps |
| C. | 250bps |
| D. | all of above |
| Answer» D. all of above | |
| 145. |
ZigBee 915 MHz ISM band has data rate of |
| A. | 20kbps |
| B. | 40kbps |
| C. | 250bps |
| D. | all of above |
| Answer» C. 250bps | |
| 146. |
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 |
| Answer» D. ieee 802.11 | |
| 147. |
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 |
| Answer» C. ieee 802.15.3 | |
| 148. |
Range of ZigBee standard devices is |
| A. | 1- 10 meters |
| B. | 50- 100 meters |
| C. | cms to 1 meter |
| D. | 100-500 meters |
| Answer» C. cms to 1 meter | |
| 149. |
Life of ZigBee devices w.r.t. power consumption is in ________ |
| A. | hours |
| B. | days |
| C. | years |
| D. | 4 weeks |
| Answer» D. 4 weeks | |
| 150. |
Date rate of 250 kbps is maximum for ________ technology. |
| A. | bluetooth |
| B. | zigbee |
| C. | ieee 802.11 |
| D. | a and b both |
| Answer» C. ieee 802.11 | |