This set of Cloud Computing Multiple Choice Questions & Answers (MCQs) focuses on “Context-Aware Services”.
1. When a mobile user is connected to the mobile service, how many sets of information is exchanged?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Two different sets of information is exchanged between user and mobile-logical and physical context.
2. Point out the wrong statement.
a) Each mobile device contains and is capable of transmitting a large amount of information concerning the condition or state of the device and the user who carries the device
b) Location is the prime example of context
c) When we search for something near us, the search engine returns results that are independent of location
d) All of the mentioned
View Answer
Explanation: When parsed properly, this information can provide intelligent systems with not only the user’s identification but the context in which that user finds himself.
3. Which of the following context contains information derived from measurements made from the mobile device or its sensors?
a) Physical
b) External
c) Logical
d) All of the mentioned
View Answer
Explanation: Physical context provides location, ambient device conditions, device states, and more.
4. Which of the following context contains information derived from the user or from the manner in which the user has interacted with services over time?
a) Physical
b) External
c) Logical
d) All of the mentioned
View Answer
Explanation: Logical contexts are information about the purpose a location serves, a digital identity and its associated attributes, relationships, interests, past searches, Web sites visited, privileges, and preferences.
5. Point out the correct statement.
a) When a phone transmits its GPS coordinates to a service, that service may be able to compare that location to the customer’s registered home address
b) Only one mechanisms exist for aggregating WSDL documents into a searchable form
c) AJAX is an OASIS standard that is searchable and is in the JSON format
d) All of the mentioned
View Answer
Explanation: This will send information appropriate to each environment back to the user.
6. Which of the following provides a set of methods for using modules to construct loosely coupled complex systems from standard parts?
a) SOA
b) OCCI
c) WCF
d) None of the mentioned
View Answer
Explanation: Method of construction of the modules is abstracted out of the system and encapsulated in SOA.
7. What is the role played by Web service in SOA?
a) service consumer
b) service provider
c) service user
d) none of the mentioned
View Answer
Explanation: SOA requires a standard messaging protocol and a form of federated database system.
8. Which of the following plays the role of the orchestrator providing programmed logic that works with the data parsed by the Context Parser?
a) Context Logic Processor
b) Context Physical Processor
c) Context View Processor
d) All of the mentioned
View Answer
Explanation: The Context Parser takes all the input data (digital signals in many cases) and applies a logical schema to create the needed structured objects for the Logic Processor’s use.
9. The specific ontology that applies to a mobile SOA is ______________
a) WOL
b) OWL
c) oXML
d) None of the mentioned
View Answer
Explanation: WOL stands for Web Ontology Language.
10. The concept of creating a structured representation of concepts and their relationship in a domain is referred to as ________
a) analogy
b) ontology
c) generalization
d) all of the mentioned
View Answer
Explanation: Ontology is a formal way of specifying a shared abstraction.
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