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 20 of 33

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Q191.
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.
Q192.
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.
Q193.
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.
Q194.
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.
Q195.
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

Discuss
Answer: (d).Central entity Explanation:Cooperative spectrum sharing involves sharing spectrum usage and noise information to other nodes of the spectrum. This mode considers the operation of other spectrum users thus raising the overall spectrum efficiency of the network. It requires non-corrupt neighbouring radios, knowledge of spectrum environment, understanding of limits imposed on transmission parameters, and transparent sharing of spectrum information by transmitters.
Q196.
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

Discuss
Answer: (a).Federal Communication Commission Explanation:Federal Communication Commission introduced interference temperature as a metric for modeling interference at the primary user produced by the secondary user. It is a measure of RF power generated by undesired transmitters and noise sources that are present in the receiver system per unit of bandwidth.
Q197.
Diffracted propagation undergoes attenuation at the rate of the third power of distance.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Cognitive radio shifts communication from direct propagation to diffracted propagation. Diffracted propagation undergoes attenuation at the rate of the fourth power of distance. It hinders the ability of the radio to sense, calculate interference, and evaluate the outcome of communication.
Q198.
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

Discuss
Answer: (d).Eliminates multiple path Explanation:Multiple input, multiple output is a technique that introduces multiple antennas at the transmitter and the receiver generating several paths for transmission. MIMO introduces channel awareness on an architectural level and is employed in the generation of links and topology. It utilizes multipath and converts multiple paths into multiple channels.
Q199.
Which among the following is an advantage of using Fast Fourier Transform (FFT) for spectrum sensing?

a.

Analysis of computation complexity in the FFT window

b.

Analysis of phase in the FFT window

c.

Analysis of period enclosed in the FFT window

d.

Analysis of frequencies enclosed in the FFT window

Discuss
Answer: (d).Analysis of frequencies enclosed in the FFT window Explanation:Fast Fourier transform is used for performing spectrum sensing by using a wideband analog to digital converter and extensive digital signal processor. This method proves advantageous as it enables the analysis of frequencies enclosed in the FFT window.
Q200.
Which among the following is not a limitation of employing FFT?

a.

Wideband ADC is required

b.

Restriction on bandwidth

c.

Increased energy demand

d.

High delay

Discuss
Answer: (d).High delay Explanation:FFT operation demands wideband ADC and extensive digital signal processing. The ADC imposes restrictions on the instantaneous bandwidth. The energy usage is increased due to the high amount of digital signal processing.
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