0

Cognitive Radio Mcqs

Q:

Which among the following is a benefit of symbolic knowledge representation?

A) No encryption is required B) Fast translation
C) Less memory storage D) Easy human comprehension
 
Answer & Explanation Answer: D) Easy human comprehension

Explanation: Symbolic knowledge representation typically involves graphical or natural language notations. It is easy for humans to understand. It offers a simplistic means for conveying underlying information for human understanding and interpretation.

View Answer Discuss

41
Q:

Which among the following is concerned with the effect on a knowledge system?

A) Behaviour knowledge B) Declarative knowledge
C) Narrative knowledge D) Status and system knowledge
 
Answer & Explanation Answer: A) Behaviour knowledge

Explanation: Behavioural knowledge involves actions and their effect on the knowledge system. Both internal and external effectors altering the system and the environment are included. An event begins with a set of assertions and terminates with a varying set of assertions.

View Answer Discuss

42
Q:

What is called declarative knowledge?

A) Declarative knowledge represents a range of values applicable for assigning a variable B) Declarative knowledge represents assumed statements
C) Declarative knowledge asserts and reasons over descriptive factual knowledge D) Declarative knowledge represents predicted knowledge
 
Answer & Explanation Answer: C) Declarative knowledge asserts and reasons over descriptive factual knowledge

Explanation: Declarative knowledge involves asserting and reasoning over descriptive factual knowledge about an object. Declarative knowledge describes the semantic relationships between objects.

View Answer Discuss

86
Q:

Which among the following processes under learning action initiates a change in the action selection policy?

A) Observation of state of the radio system B) Decision making in reasoning engine
C) Analyses of the outcome of the decision selected by the reasoning engine D) Modification of knowledge base
 
Answer & Explanation Answer: D) Modification of knowledge base

Explanation: The modification of the knowledge base step is generally the final step in a single learning cycle. The knowledge base is modified in accordance with the outcome of the actions implemented by the reasoning engine. The existing information in the knowledge base is altered, or the action selection policy is changed. Otherwise, new knowledge entries are included in the database.

View Answer Discuss

38
Q:

Which among the following processes is required to extend radio adaption beyond predefined knowledge?

A) Sorting B) Knowledge acquisition
C) Reasoning D) Learning
 
Answer & Explanation Answer: D) Learning

Explanation: The reasoning engine is responsible for applying the gathered knowledge in accordance with the current state of the system. However, the reactions will be limited to previously defined knowledge even under new situations. Learning provides the ability to study input, identify patterns, and modify the operation of the radio system as per the demands of the situations.

View Answer Discuss

54
Q:

Which among the following techniques require geographic information database?

A) Policy awareness B) Regulation awareness
C) Mobility and trajectory awareness D) Background environment awareness
 
Answer & Explanation Answer: C) Mobility and trajectory awareness

Explanation: Mobility and trajectory awareness computes the speed and direction of a cognitive radio. Speed and trajectory is estimated by analyzing the change of location of the radio over a period of time and by utilizing the resources of a geographic information database.

View Answer Discuss

45
Q:

Which among the following require radio transceiver database?

A) RF environment awareness B) Location awareness
C) Power consumption awareness D) Energy consumption awareness
 
Answer & Explanation Answer: A) RF environment awareness

Explanation: RF awareness means to be aware of spectrum utilization, spectrum users, topology, interference, and other RF characteristics. Radio transceiver database, cooperative sharing, sensor networks, and field measurement are the methods applied to gain RF environment awareness.

View Answer Discuss

37
Q:

Which among the following statements is false about the introduction of a cognitive radio in a wireless regional area network?

A) Availability of spectrum access information to the secondary user B) Availability of spectrum access information to the primary user
C) Knowledge of antenna height D) Usage pattern of wireless regional area network
 
Answer & Explanation Answer: B) Availability of spectrum access information to the primary user

Explanation: The wireless regional area network comprises base stations, repeaters, and consumer premise equipment. It provides fixed wireless access services in rural areas. The inclusion of a radio environment map provides knowledge of location, antenna height, transmission power, and opportunistic spectrum access. It provides knowledge distribution and usage patterns of secondary users.

View Answer Discuss

52