Cognitive Radio Multiple Choice Questions and Answer PDF Download

Cognitive Radio MCQ Questions and Answer | MCQ on Cognitive Radio solved Questions and Answer

Cognitive Radio MCQ: CR expansion Cognitive Radio. Cognitive radio is a form of wireless communication in which a transceiver can intelligently detect which communication channels are in use and which ones are not. The are two types of Cognitive radio such as heterogeneous and spectrum-sharing. Here we have given 40 Cognitive Radio MCQ questions and Answer. These 40 questions are based on the topics like Architecture Evolution, Antenna Tradeoff, Digital Architecture trade off and others. Candidate take this Cognitive Radio MCQ Quiz and to find the correct the answer. Keep practice these Cognitive Radio multiple choice questions regularly to get the required knowledge in this field. Applicant who are preparing for interview practice these Cognitive Radio MCQ questions and answer daily. This is the great way to score good marks in interview. At end of the page you will get the Cognitive Radio MCQ questions with answer pdf link.

Advantages of Cognitive Radio

  • Improves quality of service (QoS)
  • Overcome radio spectrum scarcity.
  • Avoid intentional radio jamming scenarios.
  • Switch to power saving protocol.
  • Improve satellite communications.

Important Links

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Cognitive Radio MCQ Questions With Answers PDF Download

1.  Military applications need __________ in addition to mobile subscriber sets.

  1. mobile infrastructure
  2. partitioned infrastructure
  3. fixed infrastructure
  4. parted infrastructure

Answer: mobile infrastructure

2. Which of the following is not a key parameter of information services in military application?

  1. Suitability
  2. Quantity
  3. Multi-tenancy
  4. Timeliness (QQT)

Answer: Multi-tenancy

3. Which of the following is not directed by Air Interface Standards?

  1. Interconnects
  2. Channel modulation
  3. Frequency allocation
  4. Access protocols

Answer:  Interconnects

4. ______ has many single- purpose radios in one structure.

  1. Modular multi functional information transfer system (MMITS)
  2. Integrated communications, navigation, and identification architecture (ICNIA)
  3. SPEAKeasy – 2
  4. Cluster HMS

Answer: Integrated communications, navigation, and identification architecture (ICNIA)

5. Quantity is measured in terms of ________

  1. link availability
  2. BER
  3. peak data rate
  4. band

Answer: peak data rate

6. What does cost effectiveness mean in terms of military requirements?

  1. Cheap replacement of existing radios
  2. Futuristic design
  3. Backward compatibility
  4. Fast replacement of existing radios

Answer: Backward compatibility

7. Which of the following is not a standard body that involves in inter networking?

  1. ITU
  2. IEEE
  3. ETSI
  4. VSO

Answer:  VSO

8. The parameters of the antenna considered for RF access are ______

  1. RF band and resonant frequency
  2. RF band and bandwidth
  3.  directivity and RF band
  4. noise constraints and bandwidth

Answer: RF band and bandwidth

9. Which of the following is not an advanced requirement in terms of Software Defined Radio?

  1.  Adaptive diversity
  2.  Multiband
  3.  Innovation signaling
  4. Adaptive networks

Answer: Multiband

10. Which was the first Software Defined Radio that included a programmable voice coder?

  1. ICNIA
  2. SPEAKeasy – 2
  3. SPEAKeasy – 1
  4. Cluster HMS

Answer: SPEAKeasy – 2

11. ____ is obtained by the product of number of parallel hardware elements and clock speed.

  1. MOPS
  2. MFLOPS
  3. MIPS
  4. KPI

Answer: MOPS

12. Which of the following is not a type of digital-interconnect?

  1. Dedicated interconnect
  2. DSP
  3. Shared memory
  4. Wideband bus

Answer: DSP

13. Interconnect efficiency is a function of ____ being transferred.

  1. size of data blocks
  2. number of data blocks
  3. type of data blocks
  4. accuracy of data blocks

Answer: size of data blocks

14. A combination of a band and mode is called ______

  1. matched set
  2. type
  3. matched pair
  4. personality

Answer: personality

15.  ____ is a technique where multiple instructions are overlapped during execution.

  1.  Caching
  2. Pipelining
  3. Mapping
  4. Instruction fetching

Answer: Pipelining

16.  When was SDR forum found?

  1. 1994
  2. 1996
  3. 1992
  4. 1995

Answer: 1996

17. Which of the following does not extend from military application to commercial application?

  1. Frequency Hopping
  2. Carrier Sense Multiple Access
  3. Direct Sequence Spread Spectrum
  4. Emitter Location

Answer: Carrier Sense Multiple Access

18. Which of the following is not a hardware module?

  1. DSP
  2. Memory
  3. Workstation
  4. RF

Answer: RF

19. Which of the following is the first step in FEC decoding?

  1. Decode
  2. Descramble
  3. Input bitstream synchronization
  4. Symbol puncturing

Answer: Input bitstream synchronization

20. Which protocol is used to control Digital Modular Radio over Ethernet?

  1. SNMP
  2. OSPF
  3. IPX
  4. TELNET

Answer: SNMP

21.  ____ serves as a system control processor.

  1. ADC
  2. DSP
  3. Bus host
  4. Memory

Answer:  Bus host

22. Which of the following can reduce the probability of non-recoverable fade depth?

  1. FEC
  2. Diversity
  3. Interleaving
  4.  FEC and Interleaving

Answer: Diversity

23.  Which of the following option cannot be employed to overcome fading?

  1. Diversity transmission and reception
  2. Decreased bandwidth
  3. Reduced channel symbol rates
  4. Structured data

Answer: Decreased bandwidth

24.  Which of the following options is not an aspect of tunneling facility?

  1. Identification of constraints
  2. Identification of processing capability
  3. Definition of interface points
  4. Resolving conflicts

Answer: Identification of processing capability

25. FEC operations are ____

  1. byte-parallel
  2. byte-serial
  3. bit-parallel
  4. bit-serial

Answer: bit-serial

26. Which of the following are frequency independent antennas?

  1. Dielectric rod and Yagi
  2. Half-wave dipole and Half-wave slot
  3. Log-periodic and Equiangular Spiral
  4. Axial mode helix and Pyramidal horn

Answer:  Log-periodic and Equiangular Spiral

27. The access of architecture level functions from component level building blocks may be called _____

  1. Ethernet
  2. Tunneling
  3. Universal plug and play
  4. Point-to-point protocol

Answer: Tunneling

28. What was the frequency range achieved by SPEAKeasy – 1?

  1. 5 – 300 MHz
  2. 30 – 3000 MHz
  3. 20 – 300 MHz
  4. 30 – 400 MHz

Answer: 30 – 400 MHz

29.  Which of the following ASIC is preferred in IF stage?

  1. Digital filtering ASICs
  2. FEC ASICs
  3. INFOSEC ASICs
  4. Transceiver ASICs

Answer:  Digital filtering ASICs

30.  _____ interleave two systematic concatenated codes.

  1. Soft codes
  2. Turbo codes
  3. Trellis codes
  4. Convolution codes

Answer: Turbo codes

31. What is the operating range of a pyramidal horn antenna?

  1. 300 MHz – 70 GHz
  2. 1 – 6 GHz
  3. 1 – 5 GHz
  4. 100 MHz – 35 GHz

Answer: 300 MHz – 70 GHz

32. SPEAK easy aimed to developed a full band antenna that operated over the range ______

  1. 2 Hz to 2 MHz
  2. 20 Hz to 2 MHz
  3. 2 MHz to 2000 MHz
  4. 20 MHz to 2000 MHz

Answer: 2 MHz to 2000 MHz

33.  Which method is used to estimate time-difference of arrival and angle of arrival?

  1. Frequency scanning interferometry
  2. Optical interferometry
  3. Interferometric dynamic measurement
  4. Phase interferometry

Answer: Phase interferometry 

34. What type of antenna is the Yagi antenna?

  1. Resonant
  2. Surface-wave
  3. Traveling wave
  4. Aperture

Answer:  Surface-wave

35.  The increase in the bandwidth of the antenna causes the thermal noise power to _____

  1. increase linearly
  2. decrease linearly
  3. decrease exponentially
  4. increase exponentially

Answer: increase linearly

36. Which of the following is not a concern for antenna tradeoff?

  1. Calibration
  2. RF access
  3. Phase noise
  4. RF MEMS

Answer: RF MEMS

37. Antenna separation effectively controls _________

  1. external noise
  2. self-generated interference
  3. directive
  4. external interference

Answer: self-generated interference

38.  Which of the following gives permissible levels of exposure to radiation in terms of whole body average SAR as per US FCC?

  1. 0.06
  2. 0.04
  3. 0.02
  4. 0.08

Answer: 0.08

39.  Both TDOA and CDMA continuously compute ______

  1. time of arrival
  2. time difference of arrival
  3. time delay of arrival
  4. angle of arrival

Answer: time of arrival

40. How is bandwidth expressed in a Software Defined Radio?

  1. Ratio of median RF to lowest RF
  2. Ratio of lowest RF to highest RF
  3. Ratio of highest RF to lowest RF
  4. Ratio of lowest RF to median RF

Answer: Ratio of lowest RF to highest RF

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