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Cognitive Radio MCQ Questions & Answers

Cognitive Radio MCQs : This section focuses on the "Cognitive Radio". These Multiple Choice Questions (MCQs) should be practiced to improve the Cognitive Radio skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

Which among the following is a function of policy service?

A. Policy decision
B. Policy life cycle management
C. New policy request
D. Policy enforcement

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Question 2

Which among the following techniques is employed in long range navigation (LORAN)?

A. Round trip time of a radio pulse
B. Time difference between two radio pulses
C. Phase difference between two continuous signals
D. Phase difference between the transmitter and the receiver

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Question 3

Which among the following is not a disadvantage of adapting specialized hardware for processing?

A. Update management
B. Functionality modification
C. High bandwidth requirement
D. Security

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Question 4

Which among the following statements is false about a very high frequency omnidirectional range (VOR)?

A. VOR is a radio navigation system for aircrafts
B. The frequency range of VOR is 108.00 to 117.95 MHz
C. VOR is intolerant of diffraction
D. VOR signals show more accuracy than nondirectional radio beacon

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Question 5

Which among the following techniques were employed for the identification of pairs in LORAN stations?

A. Modulation technique
B. Encoding scheme
C. Phase comparison between signals
D. Pulse repetition frequency

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Question 6

Which among the following units communicates with radio environment map in legacy radios?

A. Local control and access manager
B. Local bus manager
C. Specialized processor
D. Network radio resource manager

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Question 7

Which among the following areas will not have an impact on cognitive radio?

A. Maximize the flexibility of spectrum usage
B. Promote spectrum access in rural areas
C. Apply a qualitative approach to interference management
D. Allow easement for spectrum overlays and underlays

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Question 8

Which among the following incorporates knowledge to support cognition functionality?

A. External administration support
B. Internal administration support
C. External network support
D. Internal network support

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Question 9

Which among the following institution introduced interference temperature as a metric for interference?

A. Federal Communication Commission
B. American National Standards Institute
C. International Standards Organization
D. British Standards Institute

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Question 10

Which among the following is the official US regulatory body for the RF spectrum?

A. International Organisation for Standardisation
B. Institute of Electrical and Electronics Engineers
C. American National Standards Institute
D. Federal Communication Commission

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Question 11

Cognitive radio requires ____ to lower the impact in case of malfunction.

A. diodes
B. regulators
C. PID controllers
D. bridges

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Question 12

The ____ property allows elimination of a policy upon producing undesirable results.

A. evaluate
B. examine
C. try out
D. permanent

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Question 13

Which among the following is the first step in the operation of a cognition policy engine?

A. The cognitive engine transfers data to the policy engine
B. The policy engine requests data from cognitive radio
C. The policy engine obtains the set of policies to be downloaded
D. The policy engine determines the information of interest

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Question 14

Very High Frequency Omnidirectional Range begins with transmission of frequency modulated signal.

A. True
B. False

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Question 15

Which among the following is not a function of spectrum policy management?

A. Monitor spectrum utilization
B. Detect RF interference
C. Control run-time configuration of cognitive radio
D. Authorization of updates in cognitive radio

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Question 16

Which among the following is not a primary rule of role based access control?

A. Role definition
B. Role assignment
C. Role authorization
D. Permission authorization

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Question 17

Heterogeneous cognitive radio is a ____ centric approach.

A. security
B. RF band
C. network
D. environment

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Question 18

Which among the following protocol is employed management information base?

A. Telecommunications Network
B. Simple Network Management Protocol
C. Network File System
D. File Transfer Protocol

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Question 19

Which among the following instigated a review of spectrum policy at FCC?

A. Establishment of Spectrum Policy Task Force
B. Establishment of research consortium
C. Collaboration with Federal Aviation Administration
D. Collaboration with the American National Standards Institute

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Question 20

Which among the following languages initially influenced the KAoS policy language?

A. DARPA Agent Markup Language and Knowledge Query and Markup Language
B. DARPA Agent Markup Language and eXtensibleMarkup Language
C. DARPA Agent Markup Language and RoXenMarkup Language
D. eXtensible Markup Language and RoXenMarkup Language

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Question 21

What are the recommendations proposed by CSIS for the improvement of spectrum management?

A. Establish fixed norms for proposing spectrum management algorithms
B. Establish research consortium to support the government and private sectors
C. Establish fixed regulations for spectrum sharing
D. Establish fixed regulations for spectrum sensing

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Question 22

Which among the following is false about multiple input, multiple output scheme?

A. MIMO generates multiple orthogonalized channel
B. Channel awareness is used to design link
C. Coverts multiple path into multiple channels
D. Eliminates multiple path

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Question 23

Which among the following are the recommendations proposed in the Spectrum Policy Initiative created in 2003?

A. Spectrum Sharing Innovation Test bed and Spectrum Sensing Tools
B. Spectrum Sharing Innovation Test bed and Spectrum Management Tools
C. Cross-layer Innovation Test bed and Spectrum Sensing Tools
D. Cross-layer Innovation Test bed and Spectrum Management Tools

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Question 24

Which among the following is essential for geo-location using IP address?

A. Database of registration lifetime of IP packets
B. Database of IP addresses
C. Database of routing path
D. Database of port address

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Question 25

Which among the following are sources for constructing an IP database?

A. Network routing information
B. Data mining
C. Regional Internet registry
D. Data scrubbing

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Question 26

What is a radio environment map?

A. Radio environment map represents a collection of access points in the immediate vicinity
B. Radio environment map provides insight on radio environment over multiple domains such as regulation and frequency emission
C. Radio environment map represents cognitive radios in the immediate vicinity
D. Radio environment map represents cognitive radios participating in cooperative sensing

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Question 27

Adaptive radio can experiment new settings.

A. True
B. False

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Question 28

Which among the following is a problem addressed by CSIS?

A. Shortage of short range plans
B. Lack of common spectrum testing techniques
C. Challenges in negotiating international spectrum agreements
D. Construction of flexible spectrum management infrastructure

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Question 29

Which among the following is a traditional method for language identification?

A. Phrase translation
B. Word translation
C. Letter translation
D. Phonetic translation

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Question 30

Which among the following preceded the DARPA NeXt Generation radio communication program?

A. FFC Policy-Based Survivable communication program
B. DARPA Policy-Based Survivable communication program
C. FCC Frequency Agile Radio
D. DARPA Frequency Agile Radio

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Question 31

Which among the following statements is false about the radio environment map?

A. Radio environment map does not require complex circuitry in the user device
B. Radio environment map records radio frequency emissions
C. Radio environment map is a spatiotemporal database
D. Available resource map is extended from a radio environment map

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Question 32

Which among the following is a definition of spectrum efficiency?

A. Number of bits per Hertz of bandwidth
B. Number of bauds per Hertz of bandwidth
C. Number of Hertz per bit of symbol sequence
D. Number of Hertz per bit of symbol sequence

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Question 33

Which among the following is a common factor between peer to peer cognitive radio and a digital radio?

A. Automation
B. Inbuilt rules
C. Time cycle
D. Local operation

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Question 34

Which among the following is false about the defence science board?

A. Defence Science Board comprises of technology and business experts
B. Defence Science Board is a Federal Advisory Committee for the US Department of Defence
C. Defence Science Board researches for the FCC
D. Defence Science Board is identified that using spectrum multiple dimension can reduce spectrum scarcity

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Question 35

Which among the following statements is true about the spectrum policy management?

A. Eliminate cooperative sensing
B. Eliminates network administrators
C. Resolve conflicts in policy rules
D. Maintain homogeneity with legacy radios

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Question 36

Which among the following is an application of speech recognition?

A. Stress characterization
B. Network support
C. Access control
D. Decoding

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Question 37

Cognitive pilot channel is used ____

A. to obtain knowledge
B. for geo-location
C. for database access
D. for spectrum sensing

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Question 38

Which among the following is an application of geo-location software?

A. Regional licensing
B. Firewall
C. Address translation
D. Diagnostic tools

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Question 39

In ____, radio access technologies use the same frequency band.

A. network centric approach
B. spectrum sharing
C. spectrum sensing
D. RF band centric approach

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Question 40

Which among the following is a traditional method employed for effective use of spectrum?

A. Minimization of nodes per second
B. Maximization of nodes per second
C. Maximization of bits per Hz
D. Minimization of bits per Hz

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Question 41

Which among the following is not a goal of the DARPA NeXt Generation radio communication program?

A. Dynamically redistribute allocated spectrum
B. Sense spectrum automatically
C. Expand communication bandwidth
D. Select operating mode

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Question 42

What is the parameter which differentiates LORAN – B from LORAN – A?

A. Method of extraction of timing
B. Number of receivers
C. Number of transmitters
D. Determination of station location

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Question 43

Bands are allocated to radio access technology ____ in such a way that ____ is ____

A. dynamically, capacity, minimized
B. statically, interference, minimized
C. dynamically, capacity, maximized
D. statically, interference, maximized

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Question 44

Which among the following allows quality of service measurement?

A. Software capable radio
B. Software programmable radio
C. Software defined radio
D. Aware radio

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Question 45

Which among the following is the process of providing voice samples to generate a template in speech recognition?

A. Authentication
B. Verification
C. Identification
D. Enrollment

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Question 46

Which among the following is not addressed by the study conducted by Toffler associates in 2001?

A. Spectrum management
B. Technological impact of cognitive radio
C. Long term strategies for spectrum sharing
D. Methods of spectrum reallocation

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Question 47

Diffracted propagation undergoes attenuation at the rate of the third power of distance.

A. True
B. False

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Question 48

____ are used to interact with the environment.

A. Sensors
B. Actuators
C. Structure models
D. Memory

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Question 49

Which among the following statements is false about a radio operating with the radio environment map?

A. Aware of application layer operations
B. Aware of physical layer operations
C. Awareness of performance metrics
D. Incompatibility with underlying radio access technology

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Question 50

Which among the following is an appropriate unit for spectrum usage in cognitive radio?

A. Bits per unit area
B. Noise per unit area
C. Noise temperature per unit area
D. Symbols per unit area

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Question 51

Which among the following is not a region of interest associated with text to speech conversion?

A. Transcript generation
B. Pronunciation of named entities
C. Quality of voice synthesis
D. Conveyance of expression

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Question 52

Which among the following is not an objective of cognitive radio?

A. Adapt to the available spectrum
B. Minimize radio presence in the spectrum environment
C. Maximize radio presence for the networks
D. Exploit spectrum holes

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Question 53

Cognitive radio includes ____

A. heterogeneous infrastructure
B. asymmetrical infrastructure
C. equivalence infrastructure
D. symmetrical infrastructure

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Question 54

Which among the following phenomenon considers the operation of other users of the spectrum?

A. Spectrum efficiency
B. Spectrum reuse
C. Channel capacity
D. Signal energy

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Question 55

Which among the following outcome occur on increasing the energy per bit exponentially as per Shannon limit?

A. Radiated spectral energy increases at the second power of the spectral information density
B. Radiated spectral energy increases at the third power of the spectral information density
C. Spectral information density increases at the third power of the radiated spectral energy
D. Spectral information density increases at the second power of the radiated spectral energy

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Question 56

Which among the following parameters influence errors that occur in speaker recognition?

A. Amplitude dependency
B. Pitch dependency
C. Text dependency
D. Rate of speech dependency

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Question 57

How to obtain cepstrum coefficients?

A. Cepstrum coefficients are obtained by taking Fourier transform of the spectrum
B. Cepstrum coefficients are obtained by taking Fourier transform of decibel spectrum
C. Cepstrum coefficients are obtained by taking Laplace transform of decibel spectrum
D. Cepstrum coefficients are obtained by taking Laplace transform of the spectrum

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Question 58

Which among the following is a not consequence of increasing modulation depth?

A. Increase energy need
B. Increase spectral efficiency
C. Reduce effective spectrum usage of other users of the spectrum
D. Reduced noise floor

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Question 59

Which among the following is not listed under cognitive capability?

A. Knowledge on operational environment
B. Adjustment of operational parameters
C. Knowledge on geographical environment
D. Establishment of policies

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Question 60

What is the accuracy range offered by very high frequency omnidirectional range?

A. 50 m
B. 60 m
C. 80 m
D. 90 m

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Question 61

What is the full form of CSIS organization?

A. Center for Skills and Intermediary Studies
B. Center for Skills and International Studies
C. Center for Strategic and International Studies
D. Center for Strategic and Intermediary Studies

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Question 62

Which among the following categories include a badge for authentication?

A. Traits
B. Knowledge
C. Token
D. Behaviour

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Question 63

Which among the following is not a prerequisite for cooperative sensing?

A. Non-corrupt neighbouring radios
B. Knowledge of spectrum environment
C. Knowledge of limits of transmission parameters
D. Central entity

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Question 64

Which among the following is false about behaviour based authentication?

A. Behaviour authentication supports continuous mode operation
B. Behaviour authentication includes recognizing patterns
C. Behaviour authentication includes biometric detection
D. Behaviour includes network interaction

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Question 65

Which among the following factors hinders effective spectrum usage according to the SPTF?

A. Lack of spectrum access
B. Lack of antenna technology
C. Lack of physical components of radios
D. Lack of high capacity processors

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Question 66

What is the purpose of Spectrum Sharing Innovation Test Bed?

A. Spectrum Sharing Innovation Test Bed sets aside a portion of the spectrum for testing
B. Spectrum Sharing Innovation TestBed determines terrain suitable for testing
C. Spectrum Sharing Innovation TestBed creates environment models for testing
D. Spectrum Sharing Innovation TestBed constructs conditioned chambers for testing

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Question 67

Which among the following is a quality not available in a software capable radio?

A. Frequency hopping
B. Networking capability
C. Link establishment
D. Programmable cryptography

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Question 68

The cyclic coordinate method of optimization depends on the properties of objective functions.

A. True
B. False

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Question 69

Which among the following is an important assumption while operating with the Policy Core Information Model?

A. No storage is necessary
B. Cooperative storage
C. Centralized storage
D. Distributed storage

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