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 5 of 33

Discover more Topics under Cognitive Radio

Q41.
What is the purpose of out-of-band sensing?

a.

Fast switching

b.

Fast routing

c.

Fast discovery

d.

Fast handoff

Discuss
Answer: (c).Fast discovery Explanation:Out-of-band sensing computes the time duration required by a cognitive radio user to detect a completely available spectrum band for transmission. Sensing order and stopping rule are factors that overlook out-of-band sensing.
Q42.
Which among the following is a factor of concern for in-band sensing?

a.

Identification of stop period for the search process

b.

Identification of the start period for the search process

c.

Selection of spectrum for evaluation

d.

Selection of duration for transmission

Discuss
Answer: (d).Selection of duration for transmission Explanation:In-band sensing is mainly concerned with interference avoidance. Sensing time and transmission time are the major factors computed by in-band sensing. The duration and the frequency at which sensing should be carried out to achieve satisfying sensing accuracy is determined by in-band sensing.
Q43.
Which among the following are problems of transmitter detection?

a.

Secondary user uncertainty and xG base station uncertainty

b.

xG base station uncertainty and primary base station uncertainty

c.

Receiver uncertainty and shadowing uncertainty

d.

Transmitter uncertainty and receiver uncertainty

Discuss
Answer: (d).Transmitter uncertainty and receiver uncertainty Explanation:When the xG user communication range does not include the transmitter, interference is unavoidable as receiver information is unavailable. This is known as receiver uncertainty. In certain situations, the xG user has a good line of sight with the receiver but is unaware, this is known as shadowing uncertainty.
Q44.
What is the terminology used when xG base-station is involved in gathering sensing information?

a.

Cumulative

b.

Centralized

c.

Distributed

d.

Aggregated

Discuss
Answer: (b).Centralized Explanation:Cooperation detection can be carried out with a centralized structure or with a distributed structure. Centralized cooperation detection involves the collection of sensing information by the xG base station to determine spectrum holes. Distributed cooperation detection detects spectrum holes by using information exchanged by xG users.
Q45.
Which among the following is an interference of interest in xG architecture?

a.

Expected interference at primary user

b.

Expected interference at xG user

c.

Expected interference at channel

d.

Expected interference at spectrum broker

Discuss
Answer: (a).Expected interference at primary user Explanation:The expected amount of interference on the primary user due to an xG user is the interference of interest in xG architecture. Interference at the primary transmitter can be controlled through the radiated power, the out-of-band emissions, and the location at the transmitters.
Q46.
Which among the following is not a disadvantage of cooperation detection?

a.

Overhead traffic

b.

Receiver uncertainty

c.

Shadowing uncertainty

d.

Additional storage

Discuss
Answer: (c).Shadowing uncertainty Explanation:The main drawback of cooperation detection is the increased strain on networks with limited resources as the number of operations and overhead traffic is increased. When the xG user communication range does not include the transmitter, interference is unavoidable as receiver information is unavailable. Receiver uncertainty is not solved by cooperation detection.
Q47.
What is an interference temperature model?

a.

Interference temperature model is constructed by using the cumulative RF energy from multiple transmissions

b.

Interference temperature model is constructed by using the RF energy from a single transmission

c.

Interference temperature model is constructed by using the sampling RF energy from periodic transmissions

d.

Interference temperature model is constructed by using the sampling IF energy from periodic transmissions

Discuss
Answer: (a).Interference temperature model is constructed by using the cumulative RF energy from multiple transmissions Explanation:An interference temperature model is constructed by using the cumulative RF energy from multiple transmissions. A threshold limit is set on the aggregate level. The xG users are permitted to use the spectrum band provided their transmission levels are within the threshold limit.
Q48.
Which among the following is not a disadvantage of the interference detection method?

a.

Requirement of modulation of unlicensed signal

b.

Requirement of the activity level of licensed and unlicensed users

c.

Management of interference at the receiver

d.

Disregard for the effect of multiple xG users

Discuss
Answer: (c).Management of interference at the receiver Explanation:The interference detection method requires information such as type of unlicensed signal modulation, power control, and the activity level of licensed and unlicensed users. It does not consider the effect of multiple xG users. It requires the location of nearby primary users.
Q49.
Spectrum decisions are affected by the co-location of data transmission and sensing function.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Spectrum decisions are affected by the co-location of data transmission and sensing function. This problem is overcome by developing a separate sensor network for cooperative spectrum sensing while an operational network is constructed for data transmission.
Q50.
Which among the following is not considered for associating a cognitive radio user to an unused spectrum band?

a.

Time-varying radio environment

b.

Bandwidth

c.

QoS requirement

d.

Application policies

Discuss
Answer: (d).Application policies Explanation:The various characteristics of the unused spectrum bands determined during spectrum sensing depend on the time-varying radio environment, operating frequency, bandwidth, and quality of service requirements of the cognitive radio user. Spectrum management is required to correctly associate a user to a compatible spectrum band among all available spectrum bands in xG networks.
Page 5 of 33