Next Generation Wireless Network MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Next Generation Wireless Network, a fundamental topic in the field of Cognitive Radio. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Next Generation Wireless Network MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Next Generation Wireless Network mcq questions that explore various aspects of Next Generation Wireless Network problems. Each MCQ is crafted to challenge your understanding of Next Generation Wireless Network principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Cognitive Radio tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Next Generation Wireless Network MCQs are your pathway to success in mastering this essential Cognitive Radio topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Next Generation Wireless Network. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Next Generation Wireless Network knowledge to the test? Let's get started with our carefully curated MCQs!

Next Generation Wireless Network MCQs | Page 19 of 33

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Q181.
Center of Strategic and International Studies proposed a shift from the reactive spectrum management model to a proactive spectrum policy.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False Explanation:Federal Communication Commission proposed a shift from the reactive spectrum management model to a proactive spectrum policy. FCC aims to put forth a spectrum policy that will improve the public benefits obtained from spectrum usage.
Q182.
Which among the following institutions were involved in identifying the changes in Spectrum regulation?

a.

Government Accountability Office

b.

Defence Science Board

c.

Toffler associates

d.

Federal Communication Commission

Discuss
Answer: (d).Federal Communication Commission Explanation:Many institutions of research and regulation conducted studies to analyze the need for spectrum and to identify the changes that need to be made to existing regulations and policies of the RF spectrum. Government Accountability Office, Defence Science Board, and Toffler associates were involved in analyzing the need for spectrum. Federal Communication Commission and the Center of Strategic and International studies were involved in identifying the modification of regulations.
Q183.
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

Discuss
Answer: (d).Exploit spectrum holes Explanation:The objectives of the cognitive radio are to minimize the radio presence in a network while gathering data about the spectrum from the spectrum environment and to adapt to the available spectrum determined from the gathered data. The dynamic characteristics of the cognitive radio rely on its ability to sense the propagation conditions.
Q184.
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

Discuss
Answer: (a).Number of bits per Hertz of bandwidth Explanation:Modulation designers describe spectrum efficiency in terms of the number of bits per Hertz of bandwidth. It is used as a metric for measuring the performance of modulation techniques.
Q185.
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

Discuss
Answer: (b).Radiated spectral energy increases at the third power of the spectral information density Explanation:Shannon limit specifies the maximum rate at which communication can be carried out without error in a channel with a given bandwidth. Shannon limit supports a claim that spectrum efficiency of infinite bits per Hertz can be achieved by increasing energy per bit exponentially. This results in the increase of radiated spectral energy at the third power of spectral information density.
Q186.
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

Discuss
Answer: (c).Maximization of bits per Hz Explanation:Spectrum efficiency metrics of traditional digital communication is simple as it involves measuring only the number of bits per Hz. When the number of bits per Hz is maximized, a minimal amount of spectrum is occupied. However defining spectrum metrics for cognitive radio is difficult as it includes the area of propagation in addition to the amount of spectrum.
Q187.
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

Discuss
Answer: (a).Bits per unit area Explanation:Spectrum usage in the cognitive radio includes the area of propagation along with the amount of spectrum used. Hence the number of bits per unit area is an appropriate unit for spectrum usage in cognitive radio. This necessitates the inclusion of propagation in the Shannon limit.
Q188.
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

Discuss
Answer: (d).Reduced noise floor Explanation:Modulation depth provides the degree of difference between a modulated signal and an unmodulated signal. The increase of modulation depth is a poor solution for effective spectrum usage as it increases the energy needs of the operation. It affects the operation of other spectrum users as it results in the increase of noise floor or it precludes the operation at quickly increasing radii from the transmitter.
Q189.
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

Discuss
Answer: (d).Signal energy Explanation:Spectrum reuse is a critical phenomenon that includes the optimal operation of other users of the spectrum through spectrum sharing. It involves reporting the information of spectrum usage to spectrum broker and distributing spectrum usage information to other nodes.
Q190.
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

Discuss
Answer: (b).Inbuilt rules Explanation:Peer to peer cognitive radio rely on spectrum usage information from local neighbours but is mostly controlled by a set of comprehensive rules which are provided by the manufacturer. This reduces the amount of overhead in communication but leads to reduced efficiency. Decisions are taken by combining local spectrum awareness and inbuilt rules.
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