UNIT 1
INTRODUCTION TO SOFTWARE DEFINED RADIO AND COGNITIVE RADIO
1. Frequency range for Radio waves
a) 3Hz to 300GHz
b) 300MHz to 300GHz
c) 300GHz to 405THz
d) 88MHz to 110MHz
Answer: a
2. RF Frond end consists of
a) LNA,Mixer,Local oscillator
b) ADC
c) Baseband processor
d) Antenna,LNA,Mixer,Local oscillator
Answer: d
3. SDR stands for
a) Software radio
b) Software definition radio
c) Software defined radio
d) Special drawing rights.
Answer: c
4. Cognitive Radio = SDR + ------------------
a) Embedded system
b) Multiprocessor system
c) Robotics
d) Artificial Intelligence
Answer: d
5. SDR comes under
a) Tier 0 b) Tier 1 c) Tier 2 d) Tier 3
Answer: c
6. Radio in which some or all of the physical layer functions are software defined
a) Analog radio
b) GNU radio
c) Cognitive Radio
d) Software defined Radio
Answer: d
7. Radio in which some or all of the physical layer functions are software controlled
a) Analog radio
b) Software defined radio
c) Digital radio
d) Software controlled Radio
Answer: d
8. SDR can seamlessly communicate with multiple incompatible radios or act as a bridge between
them.
a) Frequency reuse
b) Interoperability
c) Future proofing
d) Design tradeoffs
Answer: b
9. Software radio classification
a) HR,SCR,SDR,ISR
b) HR,SCR,
c) SCR,SDR,ISR
d) HR,SCR,SDR,ISR,USR
Answer : d
10. Who is considered as Father of Software defined radio and Cognitive Radio
a) Joe Mitola b) G.Marconi
b) Eric Blossom d) Ben Hilburn
Answer : a
11. First U.S Military Radio was
a) Speak easy I
b) Speak easy I & Speak easy II
c) JTRS
d) Falcon Radio
Answer : b
12. JTRS Stands for ------------------------
Answer : Joint Tactical Radio system
13. Radio frequency Management technique in which an access point uses multiple antennas to send
out the same signal.
a) Joint Control
b) Synchronous Digital hierarchy
c) Agile Beamforming
d) Plug and play architecture
Answer : c
14. A new technology introduced can be interfaced or removed according to the application.
a) Bit stream processing
b) Plug and play architecture
c) IF processing
d) Evolution Support
Answer : b
15. Radio that can change its transmitter or receiver parameters based on interaction with the
environment in which it operates.
a) Software defined radio
b) Ultimate software radio
c) Ideal software radio
d) Cognitive Radio
Answer : d
16. Cognitive Radio that is capable of Machine learning
a) Intelligent Radio
b) Adaptive Radio
c) Cognitive Radio
d) Software defined Radio
Answer : a
17. Cognitive Radio research work was focused fully on
a) SCA Architecture
b) CORBA Architecture
c) IEEE 802.22
d) Dynamic Spectrum Access(DSA)
Answer : d
18. First CR WRAN Standard was established
a) 2008 b) 2009 c) 2010 d) 2011
Answer : d
19. XML Stands for --------------------------------
Answer : Extensible Markup language
20. CORBA Stands for --------------------------------
Answer : Common object request broker Architecture
21. Drawbacks of SDR
a) Difficulty in writing software for various applications
b) Cant able to support different networks
c) Does not provide benefits to the manufacturers
d) Interfacing in easy
Answer : a
22. Spectrum mobility
a) Uses specific frequency
b) Changes its frequency of operation
c) Sharing different frequencies
d) None of the above
Answer : b
23. Types of Cognitive Radio
a) High Cognitive Radio
b) Full Cognitive Radio
c) Spectrum Sensing Cognitive Radio
d) Both b and c
Answer : d
24. SCA Stands for --------------------------------
Answer : Software Communication Architecture
25. AACR Stands for --------------------------------
Answer : Aware Adaptive and cognitive radio
26. RXML Stands for --------------------------------
Answer : Radio extensible markup language.
27. RKRL Stands for --------------------------------
Answer : Radio knowledge Representation language.
28. First radio frequency spectrum regulation was organized by
a) ITU
b) FCC
c) Xilinx
d) Lime Microsystems
Answer : a
29. Elements of Quadruple whammy
a) Applications,coverage,duty cycle
b) Applications,coverage,duty cycle,performance
c) personal area network
d) d) none of the mentioned
Answer : b
30. Spectrum management project was
a) Next generation (XG) Project b) Wi-Max
b) Wi-Fi d) Dynamic Spectrum Access
Answer : a
31. Technology to alleviate the spectrum scarcity problem and increase spectrum utilization
a) Virtual machine b) Plug and play module
c)Dynamic spectrum Access d) Programmable digital radio
Answer : c
32. Which is not a part of digital front end (DFE) of a wireless communication.
a) Frequency meter b) Sample rate converter
b) filters d) Digital down converter
Answer : a
33. Software defined radio paradigm can lead to improve
a) Energy efficiency b) Energy and spectrum efficiency
b) Reconfigurability d)Spectrum efficiency
Answer : d
34. Choose the correct order of evolution of communication radio
a) Analog radio>Digital radio>software defined radio>cognitive radio
b) software defined radio>cognitive radio>Digital radio>Analog radio
c) cognitive radio>Analog radio>Digital radio>software defined radio
d) Digital radio>software defined radio>Analog radio>cognitive radio
Answer : a
35. CR paradigm can lead to
a) Energy efficiency b) Energy and spectrum efficiency
b) Network efficiency d) Spectrum efficiency
Answer : d
36. Choose the correct order of evolution of software defined radio
a) Speakeasy I &II >DMR>JTRS>GNU radio> SDR
b) DMR>JTRS>GNU radio> SDR>Speakeasy I &II
c) JTRS>GNU radio>Speakeasy I &II >DMR>SDR
d) GNU radio> SDR>Speakeasy I &II >Cognitive radio
Answer : a
37. Choose the correct order of evolution of cognitive radio
a) cognitive radio>Hardware Radio>SCA radio>SDR Radio>DSA Radio
b) Hardware Radio>SDR Radio>SCA radio.>DSA Radio>cognitive radio
c) Hardware Radio>SCA radio>SDR Radio>DSA Radio>cognitive radio
d) SDR Radio>DSA Radio>Hardware Radio>SCA radio >Cognitive radio
Answer : c
38. If new software is implemented ,it should be adaptive and supportive to existing system
a) Software affordability b) Software Flexibility
b) frequency reuse d) Reconfigurability
Answer : b
39. When new software is introduced,it should be cost effective to support the existing system
a) Software affordability b) Software Flexibility
b) frequency reuse d) Reconfigurability
Answer : a
