EC8071_CR_MODEL EXAM_QUIZ_V_(15.10.2020)-MORNING-PART-B

1.The _________________________________ means all nodes (i.e. users) in the network send their spectrum sensing information to the central control unit, and the control unit draws spectrum allocation mapping. <br />

• Centralized spectrum sharing
• Distributed spectrum sharing
• Cooperative spectrum sharing
• Non-cooperative spectrum sharing

2.____________________________________________________ means a Cognitive Users accesses the network via unused spectrum hole. It actually realizes time division multiplexing of a spectrum between Licensed Users s and Cognitive Users s, so the interference with Licensed Users is the least. <br />

• Overlay spectrum sharing
• Underlay spectrum sharing
• Cooperative spectrum sharing
• Non-cooperative spectrum sharing

3.___________________________uses dynamic source routing (DSR) mechanism for route discovery in which source node broadcasts an RREQ message with new RREQ_ID and attaches its band radio usage table (BRT). <br />

• MRSA PROTOCOL
• LOCAL COORDINATION BASED MULTIPATH ROUTING PROTOCOL
• REACTIVE SOURCE BASED MULTIPATH ROUTING PROTOCOL
• TREE BASED ROUTING PROTOCOL

4.In _____________________routing technique source specifies how the data travels across the network. Path to destination node is computed by the source node.<br />

• MRSA PROTOCOL
• LOCAL COORDINATION BASED MULTIPATH ROUTING PROTOCOL
• REACTIVE SOURCE BASED MULTIPATH ROUTING PROTOCOL
• TREE BASED ROUTING PROTOCOL

5.If the packet arriving rate is higher than the rate at which the packets are _______________, the receiving buffer will be fully occupied by packets waiting to be processed.<br />

• removed from the buffer
• keep on storing in the buffer
• buffer is closed
• transmission is stopped

6. To detect errors throughout a frame _________________error control mechanism is preferred.

• CHECKSUM
• CYCLIC REDUNDANCY CHECK
• VERTICAL REDUNDANCY CHECK
• FEC & RETRANSMISSION

7.An efficient and truthful spectrum auction is one that is truthful and maximizes the ________________ subject to the interference constraints

• profit to Incumbant users
• efficiency of spectrum usage
• quick adaption ability to the fallow spectrum spaces
• None of the above

8.The next-generation public safety communication equipment is expected to provide advanced features, like __________________.

• sensors for biomedical and environmental signals
• sophisticated networking mechanismsthat suppost robust use
• robotic process automation support
• AI enabled devices to manage the spectrum occupancy

9.CRN-based IoT can seek channels ______________________ in an astute way for efficient communication.<br />

• that are very costly
• free of interference
• free of intrusion
• that are readily occupyable

10.The ________________ are in charge of keeping up the methods for information exchange to the real world objects, observing the condition and catching the information from the things. <br />

• virtual objects
• volatile objects
• vulnerable objects
• wisdom objects