Cognitive Radio Basics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Cognitive Radio Basics, 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 Cognitive Radio Basics 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 Cognitive Radio Basics mcq questions that explore various aspects of Cognitive Radio Basics problems. Each MCQ is crafted to challenge your understanding of Cognitive Radio Basics 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 Cognitive Radio Basics 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 Cognitive Radio Basics. 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 Cognitive Radio Basics knowledge to the test? Let's get started with our carefully curated MCQs!

Cognitive Radio Basics MCQs | Page 6 of 11

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Q51.
____ is characterized by software communication architecture compliance.

a.

Near term Digital Radio

b.

HaveQuick

c.

Joint Tactical Radio System

d.

Joint Tactical Terminal

Discuss
Answer: (c).Joint Tactical Radio System Explanation:Joint Tactical Radio System aims to increase the flexibility and interoperability of globally deployed systems. The operations such as waveform modification are to be accomplished through easy technology and capability upgrades.
Q52.
Propagation model is a system level model.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:The internal structure model of a radio should provide vast amount of information the characteristics of a network. Propagation models, Quality of service models, and queuing models are some system level models used to characterize a cognitive network.
Q53.
Negotiation dialogs are used in plan generation.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True Explanation:Certain user interactions employ negotiation dialogs such as additional costs for roaming. Negotiation dialogs requires natural language analysis, generational capability, and causality analysis.
Q54.
Which among the following is an operating parameter which cannot be adapted?

a.

Frequency

b.

Instantaneous bandwidth

c.

Modulation schemes

d.

Environment

Discuss
Answer: (d).Environment Explanation:An adaptive radio oversees its own performance and is open for modification of operating parameters. Frequency, instantaneous bandwidth, modulation schemes, error correction coding, equalizers, data rate, and transmission power are few examples of operating parameters that can be adapted.
Q55.
____ spread spectrum is ____ when ___ is programmed.

a.

Frequency hopped, adaptive, hop

b.

Frequency hopped, not adaptive, hop

c.

Direct sequence, not adaptive, sequence

d.

Direct sequence, adaptive, hop

Discuss
Answer: (b).Frequency hopped, not adaptive, hop Explanation:Frequency hopped spread spectrum is not adaptive when hop is programmed. However when the hop pattern is modified to mitigate collision, the frequency hopping radio can be considered as adaptive.
Q56.
A radio that supports ____ channel bandwidths is ____

a.

joint, adaptive

b.

joint, not adaptive

c.

multiple, not adaptive

d.

multiple, adaptive

Discuss
Answer: (c).multiple, not adaptive Explanation:A radio that changes instantaneous bandwidth and system timing as per the network load may be considered as adaptive. However a radio that simply supports multiple channel bandwidths is not adaptive.
Q57.
An adaptive radio changes its intermediate frequency characteristics in accordance to ____

a.

encryption method

b.

enciphering method

c.

network load

d.

channel characteristics

Discuss
Answer: (d).channel characteristics Explanation:An adaptive radio is changes the operating parameters in accordance to sensor input for effective communication. Thus an adaptive radio changes its intermediate frequency characteristics in accordance to channel characteristics.
Q58.
Which among the following exhibit some amount of adaptive quality?

a.

Digital European Cordless Telephone

b.

Racal 25

c.

Digital Modular Radio

d.

Position Location Reporting System

Discuss
Answer: (a).Digital European Cordless Telephone Explanation:Digital European Cordless Telephone finds the noise floor and interference of all available channels. The carrier frequencies are then selected based on the information obtained from sensing such that there is reduction in the amount of interference.
Q59.
TVWS stands for ____

a.

Telephone Variable White Space

b.

Telephone Variable White Space

c.

Television Wide Space

d.

Television White Space

Discuss
Answer: (d).Television White Space Explanation:Television White Space refers to the unused space found between channels actively used in UHF and VHF spectrum. The major regulatory agencies such as FCC of the US, Ofcom of the UK, and the ECC of CEPT in Europe are developing rules for unlicensed use of TV Whitespace.
Q60.
The ECC studied the operational requirements of cognitive radio in the range ____

a.

460 – 560 MHz

b.

470 – 650 MHz

c.

470 – 790 MHz

d.

460 – 690 MHz

Discuss
Answer: (c).470 – 790 MHz Explanation:The Electronics Communication Committee studied the technical and operational requirements of cognitive radio in white space of the ultra-high frequency band in the range 470-790 MHz. It acts as a foundation for regulatory activities in ECC.
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