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 10 of 33

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Q91.
Which among the following statement is false about cooperative sensing?

a.

Cooperative spectrum sharing is alternately known as collaborative spectrum sharing

b.

Cooperative spectrum sharing studies the effect of communication of one node on other nodes

c.

Cooperative spectrum sharing withholds the interference information

d.

Cooperative spectrum sharing minimizes collision caused by users accessing the same portion of the spectrum

Discuss
Answer: (c).Cooperative spectrum sharing withholds the interference information Explanation:Cooperative spectrum sharing studies the effect of communication of one node on other nodes. It also involves distributing the interference measurements among the users in the network. This information is utilized by spectrum allocation algorithms which provide spectrum access to users.
Q92.
Which among the following is true non-cooperative spectrum sharing?

a.

Non-cooperative spectrum sharing optimizes spectrum sharing algorithms

b.

Non-cooperative spectrum sharing reduces effective spectrum utilization

c.

Non-cooperative spectrum sharing distributes interference measurements to other users in the network

d.

Non-cooperative spectrum sharing works only with spectrum broker

Discuss
Answer: (b).Non-cooperative spectrum sharing reduces effective spectrum utilization Explanation:Non-cooperative spectrum sharing only considers the communication of the one particular node. Due to the lack of information about other users, it exhibits reduced spectrum utilization. However due to minimal communication requirements, it is suitable for certain resource-constrained practical applications.
Q93.
What is the parameter used to differentiate the overlay and underlay spectrum sharing technique?

a.

Delay in unlicensed spectrum

b.

Delay in licensed spectrum

c.

Degree of interference exhibited towards primary user

d.

Degree of interference exhibited towards secondary user

Discuss
Answer: (c).Degree of interference exhibited towards primary user Explanation:The overlay and underlay spectrum sharing techniques are classified based on the amount of interference directed towards the primary users while operating in the licensed spectrum band. Overlay exhibits zero interference while the underlay technique exhibits considerable interference which is regarded as noise by primary users.
Q94.
Which among the following method is employed in underlay spectrum sharing?

a.

Time division multiple access

b.

Spread spectrum techniques

c.

Frequency division multiple access

d.

Time division duplexing

Discuss
Answer: (b).Spread spectrum techniques Explanation:Underlay spectrum sharing technique employs spread spectrum techniques while transmitting in the licensed portion of the spectrum band. Spread spectrum involves stretching a signal over a bandwidth which is wider than its original bandwidth. Therefore bandwidth utilization and interference towards the primary user is increased.
Q95.
Which among the following is true about centralized spectrum sharing?

a.

Centralized spectrum sharing does not rely on fixed infrastructure units

b.

Centralized spectrum sharing holds each node responsible for spectrum allocation

c.

Centralized spectrum sharing reduces the overhead of communication

d.

Centralized spectrum sharing has a controlling entity for spectrum allocation and spectrum access

Discuss
Answer: (d).Centralized spectrum sharing has a controlling entity for spectrum allocation and spectrum access Explanation:Centralised spectrum sharing consists of a central entity for performing spectrum allocation and spectrum access. Each node in the network forwards information on the spectrum and the interference to the central entity. The central entity builds the spectrum allocation map using the collected information.
Q96.
Which among the following has to be carried out after the spectrum is allocated for communication?

a.

Listen for the arrival of the primary user

b.

Handshake mechanism between transmitter and receiver

c.

Estimate the duration of communication

d.

Forward interference information to spectrum broker

Discuss
Answer: (b).Handshake mechanism between transmitter and receiver Explanation:The selected portion of the spectrum must be informed to the receiver of data. This is accomplished by invoking a transmitter-receiver handshake protocol that is used for effective communication in xG networks.
Q97.
Which among the following is not a step in spectrum sharing?

a.

Spectrum sensing

b.

Spectrum mobility

c.

Spectrum access

d.

Spectrum management

Discuss
Answer: (d).Spectrum management Explanation:Spectrum sharing process is integrated with spectrum sensing, spectrum allocation, spectrum access, handshake mechanism, and spectrum mobility. Thus the selection of best available spectrum, prevention of collision due to the overlapping portion of the spectrum, and seamless connection for communication regardless of the location of the user involves spectrum sharing.
Q98.
Which among the following layer operation is similar to that of spectrum sharing?

a.

Physical

b.

Data-link

c.

Network

d.

Transport

Discuss
Answer: (b).Data-link Explanation:The data link layer particularly the MAC portion is responsible for collision avoidance. Likewise, spectrum sharing is responsible for avoiding collision between licensed and unlicensed users of the licensed spectrum band as well as for avoiding collision among xG users in the unlicensed band.
Q99.
Which among the following is a constraint observed in hardware constrained MAC protocol for cognitive radio networks?

a.

Hidden terminal problem

b.

Synchronization among xG users

c.

Synchronization between xG user and primary user

d.

Shadowing uncertainty

Discuss
Answer: (a).Hidden terminal problem Explanation:Sensing in a limited geographic area with a fixed bandwidth limit on secondary users is a challenge for hardware constrained MAC protocol. Thus hidden terminal problem is observed in the hardware constrained MAC protocol. The demand for synchronization among xG users is a problem of concern for cognitive MAC protocol.
Q100.
Transmitter-receiver handshake does not involve any central entity such as the primary base-station.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False Explanation:The transmitter-receiver handshake conveys the selected spectrum for communication to the receiver. This protocol is not limited between a transmitter and a receiver and may also include external entities such as a primary base-station especially in methods such as cooperative spectrum sharing.
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