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 6 of 33

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Q51.
What among the following is not a function of spectrum management?

a.

Sensing

b.

Decision

c.

Mobility

d.

Repair

Discuss
Answer: (d).Repair Explanation:The major functions of spectrum management are spectrum sensing, spectrum analysis, and spectrum decision-making. Spectrum sharing and spectrum mobility are also included in the management framework. Every function operates over all layers of the OSI model except sensing which is implemented only in the physical layer.
Q52.
Which among the following functions prevent collision?

a.

Spectrum analysis

b.

Spectrum decision

c.

Spectrum mobility

d.

Spectrum sharing

Discuss
Answer: (d).Spectrum sharing Explanation:In the unlicensed portion of the spectrum, cognitive radio users have equal access to the spectrum and attempt to access the spectrum simultaneously. Spectrum sharing coordinates the network access such that collision is avoided in overlapping portions of the spectrum.
Q53.
What is the function of spectrum mobility?

a.

Detect spectrum holes

b.

Gather information about available spectrum bands

c.

Vacate spectrum band

d.

Monitor spectrum band

Discuss
Answer: (c).Vacate spectrum band Explanation:The cognitive radio users only have temporary access to the unused spectrum in the licensed band. If the primary user demands access, the spectrum mobility function of the spectrum management framework intervenes and transfers the cognitive radio user to another vacant position.
Q54.
What is the function of the spectrum analysis unit?

a.

Detect spectrum holes

b.

Prevent collision between multiple users

c.

Match spectrum bands with user requirements

d.

Listen for the arrival of the primary user

Discuss
Answer: (c).Match spectrum bands with user requirements Explanation:Spectrum analysis defines the characteristics of the spectrum bands and verifies whether the characteristics meet the user requirements. Interference level, channel error rate, link-layer delay, holding time, and path loss are few of defining parameters of a spectrum band.
Q55.
Which parameter can be used to compute the permissible power of xG users?

a.

Distance between the primary transmitter and xG user

b.

Amount of interference at the primary receiver

c.

Amount of interference at xG user

d.

Distance between the primary receiver and xG user

Discuss
Answer: (b).Amount of interference at the primary receiver Explanation:Channel capacity can be estimated by determining the permissible power of an xG user. The permissible power is computed by determining the amount of interference at the primary receiver. The amount of interference sometimes depends on the number of users in the spectrum.
Q56.
Which among the following statements is false about the outcome of increasing transmission power?

a.

Transmission range at higher frequencies is maintained

b.

Path loss is increased

c.

Interference is increased

d.

Transmission range at lower frequencies is maintained

Discuss
Answer: (b).Path loss is increased Explanation:Path loss is proportional to the operating frequency. Hence, transmission range gradually reduces with an increase in frequency when the transmission power is not modified. If transmission power is increased, the path loss is decreased with an increase in the amount of interference.
Q57.
Which among the following factors affect the error rate?

a.

Encoding techniques

b.

Modulation scheme

c.

Channel capacity

d.

Access techniques

Discuss
Answer: (b).Modulation scheme Explanation:Wireless link errors are parameters of importance in characterizing the spectrum band. The modulation scheme and the amount of interference in the spectrum band influence the error rate. Wrongful sensing decisions are also a contributing factor to the high error rate.
Q58.
What is the primary cause of the link-layer delay?

a.

Selection of appropriate protocol

b.

Selection of routing path

c.

Packet generation

d.

Frame generation

Discuss
Answer: (a).Selection of appropriate protocol Explanation:Each spectrum band is assigned a different protocol with respect to the interference level, path loss, and wireless link errors of the band. The link-layer packet transmission delay differs with different protocols.
Q59.
What is holding time?

a.

The duration required to identify a spectrum hole

b.

The duration available after the arrival of the primary user to vacate the spectrum band

c.

The duration over which the xG user can use the licensed spectrum band

d.

The duration over which the xG user can use the unlicensed spectrum band

Discuss
Answer: (c).The duration over which the xG user can use the licensed spectrum band Explanation:Holding time refers to the period over which the xG user can occupy the licensed spectrum band before the arrival of the primary user. High holding time ensures high quality. Statistical handoff patterns are used to construct xG networks with longer holding time.
Q60.
Which among the following is a challenge for spectrum management?

a.

Asynchronous sensing

b.

Multiple spectrum band operation

c.

Availability of non-contiguous spectrum bands

d.

Reconfiguration

Discuss
Answer: (d).Reconfiguration Explanation:Transmission parameters of a radio should be reconfigurable for effective operation in certain spectrum bands. For example, if the signal to noise cannot be modified, then the bit error rate can be altered to maintain the channel capacity by employing adaptive modulation techniques.
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