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 12 of 33

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Q111.
The selection of a common control channel is difficult in centralized networks.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False Explanation:The selection of a common control channel is difficult in distributed cognitive wireless networks due to the time varying spectrum environment and lack of a central controlling entity. It is overcome by choosing a licensed or an unlicensed channel as the dedicated common control channel.
Q112.
Which among the following methods is associated with dynamic open spectrum channel protocol?

a.

Centralized inter-network spectrum sharing

b.

Distributed inter-network spectrum sharing

c.

Cooperative intra-network spectrum sharing

d.

Non-cooperative intra-network spectrum sharing

Discuss
Answer: (c).Cooperative intra-network spectrum sharing Explanation:Dynamic open spectrum channel protocol aids the cooperative intra-network spectrum sharing. A busy tone is exchanged between the transmitter and the receiver in the selected busy tone channel during communication on the data channel.
Q113.
Which among the following is not an upper layer issue?

a.

Channel sensing

b.

Routing

c.

Security

d.

Congestion control

Discuss
Answer: (a).Channel sensing Explanation:Upper layer issues are the challenges in the application layer, the transport layer, and the network layer in the implementation of cognitive radio networks. Route selection and maintenance is a challenge of the network layer. Prevention of intrusion is a challenge of the transport layer.
Q114.
Which among the following is a not route metric?

a.

Power efficiency

b.

Interference

c.

Cost

d.

Data size

Discuss
Answer: (d).Data size Explanation:Route metrics are parameters whose values are evaluated to assign a cost to a link in the path between the source and the destination. Routing algorithms rely on route metrics to select the optimum path for forwarding the packets.
Q115.
Which among the following is an issue for routing in cognitive radio networks?

a.

Spectrum sensing

b.

Power allocation

c.

Spectrum knowledge

d.

Spectrum characterization

Discuss
Answer: (c).Spectrum knowledge Explanation:The routing layer requires information about the spectrum for determining the path of communication. The consolidation of information obtained by sensing and by characterization operations of the physical layer is a challenge as it is difficult to decide which information should be stored. The user requires local as well as global knowledge of the spectrum.
Q116.
What is the term used to define the additional data that has to be transferred other than the message during communication?

a.

Encoded bits

b.

Payload

c.

Support bits

d.

Overhead

Discuss
Answer: (d).Overhead Explanation:Overhead refers to the additional transmissions that exceed the allowable number of transmissions resulting in a decrease of efficiency and throughput of the entire network. For example, in cooperative sensing, before transmission of information, the sensing information collected by a user has to be forwarded to other secondary users in the network.
Q117.
Which among the following is false about the routing issue link failure?

a.

Interference is a route metric used to represent link failure

b.

Link capacity is a route metric used to represent link failure

c.

Link failure is caused by the displacement of an intermediary node

d.

Link failure is caused by the arrival of the primary user

Discuss
Answer: (b).Link capacity is a route metric used to represent link failure Explanation:Link failure arises due to the arrival of a primary user or due to the lack of replacement of a displaced intermediary node. Link failure, depending on the triggering event, may be recovered by employing an extra power signal.
Q118.
Which among the following is not a route metric of the routing issue mobility handling?

a.

Delay

b.

Interference

c.

Throughput

d.

Link stability

Discuss
Answer: (c).Throughput Explanation:Mobility handling is required when a secondary user moves from one place to another due to the arrival of a primary user or due to variation in the spectrum environment. It is also required when an intermediary node leaves the path of communication. Mobility handling is responsible for finding an alternate node and re-establishing communication.
Q119.
Which among the following issues consider cost as a route metric?

a.

Spectrum knowledge

b.

Overhead

c.

Link failure

d.

Best path selection

Discuss
Answer: (d).Best path selection Explanation:Best path selection considers the following route metrics namely delay, power efficiency, interference, throughput, and cost. The path that closely meets the quality of service requirements of the application is chosen as the best path. The cognitive radio network calculates several paths considering the possibility of the arrival of a primary user, the robustness of a path, etc.
Q120.
Why common channel control is required for routing?

a.

Transmission coordination

b.

Time of arrival synchronization

c.

Broadcasting

d.

Spectrum analysis

Discuss
Answer: (c).Broadcasting Explanation:The existing routing protocols for functionalities such as neighbour discovery, route discovery, and route establishment need to broadcast messages either globally or locally. The lack of a common control channel makes it difficult to send broadcast messages in xG networks.
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