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 13 of 33

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Q121.
Which among the following issues require channel-based models for analysis?

a.

Common control channel

b.

Spectrum knowledge

c.

Queue management

d.

Intermittent connectivity

Discuss
Answer: (d).Intermittent connectivity Explanation:Intermittent connectivity is caused due to the time-changing nature of the spectrum and loss of channel due to the arrival of the primary user. It is also due to the fact that when the user chooses a channel for communication, the node cannot be reached through other channels. Thus channel-based models are required for developing time-based solutions.
Q122.
Why is queue management required?

a.

Form a queue of xG users which require access for a particular channel in the licensed band

b.

Handle multiple interfaces

c.

Form a queue of xG users which require access for a particular channel in the unlicensed band

d.

Form a queue of xG users to forward information to spectrum broker

Discuss
Answer: (b).Handle multiple interfaces Explanation:An xG terminal uses multiple interfaces to interact with multiple nodes. Queue management is responsible for finding an interface best suited for the traffic in the spectrum environment. Queues are generated after evaluating each interface with each traffic type.
Q123.
Which among the following is not a network layer attack?

a.

Network endo parasite attack

b.

Jamming attack

c.

Channel ecto parasite attack

d.

Low cost ripple effect attack

Discuss
Answer: (b).Jamming attack Explanation:Network endo parasite attack increases the amount of interference. Channel ecto parasite attack switches its interference to a channel occupied by a high priority user. Low cost ripple effect attack shares false channel assignment information.
Q124.
Cross layer approach is the combination of route selection and spectrum management.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Cross layer approach jointly considers route and spectrum selection in xG networks. Typically, route selection is carried out centrally with a global view of the network. On constructing a route, each hop is associated with a time slot and a channel.
Q125.
Which among the following does not cause performance degradation on TCP level?

a.

Link error

b.

Packet loss

c.

Admission control

d.

Access delay

Discuss
Answer: (d).Access delay Explanation:Transmission Control Protocol is a connection oriented, reliable, end to end protocol of the transport layer. TCP generally exhibits performance degradation in wireless networks due to a high packet loss rate. Cognitive radio introduces new challenges such as interruption due to loss of availability of a channel.
Q126.
Which among the following influences packet loss probability?

a.

Operation frequency

b.

Interference level

c.

Available bandwidth

d.

Medium Access Control protocol

Discuss
Answer: (d).Medium Access Control protocol Explanation:Packet loss probability is computed to predict wireless link error. It relies on the access technology, operating frequency, interference level, and available bandwidth. Wireless channel access delay relies on operation frequency, interference level, and medium access control protocol.
Q127.
Which among the following factors influence round trip time?

a.

Access technology

b.

Power efficiency

c.

Cost

d.

Frequency of operation

Discuss
Answer: (d).Frequency of operation Explanation:Round trip time depends on the frequency of operation. An increased number of link layer retransmissions is required to send a packet across the wireless channel when a high packet error rate is observed at a particular frequency band.
Q128.
What is spectrum handoff latency?

a.

Spectrum handoff latency is the time taken to switch to a new frequency during handoff

b.

Spectrum handoff latency is the period over which an xG user can use licensed band before handoff

c.

Spectrum handoff latency is the time taken to estimate the path between a current licensed band and a new licensed band

d.

Spectrum handoff latency is the time taken to send handoff information to the spectrum broker

Discuss
Answer: (a).Spectrum handoff latency is the time taken to switch to a new frequency during handoff Explanation:Depending on the available spectrum, the operational frequency of the radio changes with time. When the radio changes its frequency of operation, the time taken for the new frequency to become operational is called spectrum handoff.
Q129.
Which among the following increases with an increase in spectrum handoff latency?

a.

Overhead

b.

Time of arrival

c.

Round trip time

d.

Link layer delay

Discuss
Answer: (c).Round trip time Explanation:High spectrum handoff latency leads to increased round trip time. This in turn leads to retransmission time out. Existing protocols deduce the cause as packet loss and invoke the congestion avoidance mechanism resulting in the decrease of throughput. Cognitive radio network requires transport protocols that support spectrum mobility.
Q130.
Which among the following is the first step in multipath routing?

a.

Selection of a spectrum band for transmission

b.

Identification of multi-paths

c.

Evaluation of route metrics

d.

Selection of route metrics

Discuss
Answer: (a).Selection of a spectrum band for transmission Explanation:In multipath routing, the multiple paths are discovered first. The routes are evaluated on route metrics such as delay and link stability, and then the node selects a route for transmission. One approach is to employ dynamic source routing for route discovery. Multipath routing suits the dynamic nature of cognitive networks and exhibits increased efficiency.
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