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 21 of 33

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Q201.
Which among the following parameters do not exhibit better performance in the spectrum analyzer when compared to the FFT technique?

a.

Complexity

b.

Bandwidth

c.

Short signal detection

d.

Power

Discuss
Answer: (c).Short signal detection Explanation:Spectrum analyzers are employed for spectrum sensing by tuning to a band with the scan frequency adjusted to dwell at a frequency bin for a desired period. The spectrum analyzer exhibits reduced complexity and power requirements when receiver components are shared. It also scans over large ranges of signals.
Q202.
Which among the following is accomplished by sampling sub-Nyquist in wideband FFT spectrum sensing?

a.

Reduction of complexity

b.

Improved signal detection

c.

Reduced power consumption

d.

Shorter time delay

Discuss
Answer: (d).Shorter time delay Explanation:Time delay and interleaving time can be controlled by sampling sub-Nyquist and by using appropriate filters in wideband FFT spectrum sensing. The short delay simplifies compatibility with MAC layer timing.
Q203.
Which among the following layers have a similar impact due to interference caused by primary user transmission?

a.

Physical layer and MAC layer

b.

MAC layer and network layer

c.

Network layer and Transport layer

d.

Transport layer and Physical layer

Discuss
Answer: (c).Network layer and Transport layer Explanation:The effect of primary user transmission on the MAC layer and network layer is complete and irreversible blockage of a packet. It can be mitigated by retransmitting acknowledgments in the MAC layer. It can be mitigated in the network layer by selecting protocol with effective packet restoration mechanisms.
Q204.
Which among the following is the impact of primary user interference in the physical layer?

a.

High bit error rate

b.

High delay

c.

High collision

d.

High energy demand

Discuss
Answer: (a).High bit error rate Explanation:The effect of primary user interference in the physical layer is a high bit error rate. It can be mitigated by adjusting the coding dynamically. It also can be resolved by allowing higher layers to tackle interference for a period of time.
Q205.
Which among the layers fail to route a packet due to primary user interference?

a.

Physical layer

b.

Data link layer

c.

Network layer

d.

Transport layer

Discuss
Answer: (d).Transport layer Explanation:The effect of primary user interference in the transport layer is the failure to route a packet. It can be mitigated by identifying missing packets using the sequence number and requesting of the retransmission of the packets.
Q206.
Which among the following is the impact of having poor spur free dynamic range?

a.

Difficulty in short signal detection

b.

Overloading

c.

Additive noise

d.

High complexity

Discuss
Answer: (c).Additive noise Explanation:Spur free dynamic range is the maximum range over which self-generated signals are absent. Poor SFDR results in spur which resembles tonal signals and give the appearance of an occupied signal. This results in the addition of noise to the received signals.
Q207.
Which among the following results in low sensitivity?

a.

Poor collision mitigation mechanism

b.

Poor signal processing

c.

Poor noise figure

d.

Poor linear noise amplifier performance

Discuss
Answer: (c).Poor noise figure Explanation:Noise figure quantifies the amount of self-generated noise at the receiver. It lower sensitivity and makes it difficult to find other users of the spectrum. Decreased sensitivity causes a reduction in the amount of power allowed for transmission.
Q208.
Under good propagation conditions, increasing the transmission energy is a poor technique to increase spectrum efficiency.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Effective spectrum usage considers both the amount of spectrum used and the area of propagation. Under good propagation conditions, increasing the transmission energy is a poor technique to increase spectrum efficiency. By increasing the efficiency of a single radio, the spectrum cannot provide proper communication conditions for other users of the spectrum.
Q209.
Which among the following may be implemented to reduce the amount of assumption about interference?

a.

Installing multiple sensors to observe the same transmission

b.

Developing multiple channel models

c.

Developing multiple signal propagation models

d.

Installing multiple resource managers

Discuss
Answer: (a).Installing multiple sensors to observe the same transmission Explanation:The removal of uncertainty can reduce the required amount of power at the cognitive transmitter with the certainty of non-interference to the victim receiver. Although multipath scenarios cannot be eliminated, installing multiple sensors to observe the same transmission can reduce the amount of assumption about interference.
Q210.
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

Discuss
Answer: (c).VOR is intolerant of diffraction Explanation:Very high frequency omnidirectional range is a radio navigation system incorporated in aircrafts to stay on route with the help of radio signals transmitted by a network of ground radio beacons. A prominent feature of VOR is that the bearing from the station to the aircraft is unaffected by wind and orientation of the aircraft.
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