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Questions and Answers
In a traditional teleprocessing architecture, where is all processing performed?
What was a significant burden on the central computer in the traditional teleprocessing architecture?
In a file-server architecture, where do the applications and DBMS run?
What is the primary purpose of a file server in a file-server architecture?
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What is a disadvantage of the file-server architecture mentioned in the text?
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Which component separates into client and server in the client–server architecture?
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What are the advantages of three-tier architecture mentioned in the text?
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What problem does three-tier architecture eliminate compared to the traditional two-tier client–server model?
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Which type of middleware allows subscribers to receive messages without knowledge of publishers?
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Which technology is a standard for server programming in Java?
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What is the main function of application servers in a multi-tier architecture?
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In high-throughput environments, what can replace a single web server for load balancing?
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What does CORBA enable across languages and computers?
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What is the primary function of Transaction Processing Monitors (TP Monitors)?
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What is the purpose of the Java Transaction API (JTA)?
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How do Web services differ from other Web-based applications?
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Which technology is NOT emphasized in RESTful Web services?
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What is the key focus of Service-Oriented Architectures (SOA)?
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What is the cost for Amazon S3 storage usage based on?
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Which technology is NOT a key part of Web services?
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What is a disadvantage of the file-server architecture mentioned in the text?
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In a three-tier client–server architecture, where does the user interface layer run?
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What did the traditional two-tier client–server architecture lack compared to the three-tier design?
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What is a key advantage of N-tier architectures mentioned in the text?
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What is the primary function of middleware in a distributed system?
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Which type of middleware enables asynchronous calls between client and server applications?
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What is the standard for server programming in Java?
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In high-throughput environments, what can replace a single web server for load balancing?
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What is the primary function of Transaction Processing Monitors (TP Monitors)?
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What does CORBA enable across languages and computers?
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What is the main purpose of Database-oriented middleware like ODBC and JDBC?
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What is the key focus of Service-Oriented Architectures (SOA)?
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Which technology is NOT a key part of Web services?
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What is the primary focus of RESTful Web services?
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What is the primary emphasis of Service-Oriented Architectures (SOA)?
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What is a key principle of SOA design approach?
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In a traditional teleprocessing architecture, where is all processing performed?
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What is the primary purpose of a file server in a file-server architecture?
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What was a significant burden on the central computer in the traditional teleprocessing architecture?
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What are the terminals' messages routed through in a traditional teleprocessing architecture?
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Study Notes
Web Services, REST, and Service-Oriented Architectures
- Web services examples include Microsoft Bing Maps, Google Maps, Amazon Simple Storage Service (Amazon S3), Geonames, DOTS Web services, and Xignite
- Amazon S3 charges are based on a "pay-as-you-go" policy, currently $0.125 per GB for the first 50TB/month of storage used
- Key technologies and standards in Web services include XML, SOAP (Simple Object Access Protocol), WSDL (Web Services Description Language), and UDDI (Universal Discovery, Description, and Integration)
- RESTful Web services emphasize moving away from SOAP-based services towards Representational State Transfer (REST) based communications
- REST services do not require XML, SOAP, WSDL, or UDDI definitions, and are based on an architectural style that specifies constraints for desirable properties
- REST architecture style adopts a client-server architecture, uses a stateless communication protocol, and exchanges representations of resources using a standardized interface and protocol
- Service-Oriented Architectures (SOA) is a business-centric software architecture for building applications that implement business processes as sets of services published at a granularity relevant to the service consumer
- SOA emphasizes flexibility and reusability as key requirements for businesses in a rapidly changing technological landscape
- SOA architecture typically involves three processes: Service Scheduling, Order Processing, and Account Management, each accessing a number of databases
- SOA aims to design loosely coupled and autonomous services that can be combined to provide flexible composite business processes and applications
- Common SOA principles include loose coupling, reusability, and adherence to a communications contract defining information exchange and service description information
- SOA design approach focuses on building Web services for SOA with an emphasis on loose coupling, reusability, and adherence to communication contracts.
Web Services, REST, and Service-Oriented Architectures
- Web services examples include Microsoft Bing Maps, Google Maps, Amazon Simple Storage Service (Amazon S3), Geonames, DOTS Web services, and Xignite
- Amazon S3 charges are based on a "pay-as-you-go" policy, currently $0.125 per GB for the first 50TB/month of storage used
- Key technologies and standards in Web services include XML, SOAP (Simple Object Access Protocol), WSDL (Web Services Description Language), and UDDI (Universal Discovery, Description, and Integration)
- RESTful Web services emphasize moving away from SOAP-based services towards Representational State Transfer (REST) based communications
- REST services do not require XML, SOAP, WSDL, or UDDI definitions, and are based on an architectural style that specifies constraints for desirable properties
- REST architecture style adopts a client-server architecture, uses a stateless communication protocol, and exchanges representations of resources using a standardized interface and protocol
- Service-Oriented Architectures (SOA) is a business-centric software architecture for building applications that implement business processes as sets of services published at a granularity relevant to the service consumer
- SOA emphasizes flexibility and reusability as key requirements for businesses in a rapidly changing technological landscape
- SOA architecture typically involves three processes: Service Scheduling, Order Processing, and Account Management, each accessing a number of databases
- SOA aims to design loosely coupled and autonomous services that can be combined to provide flexible composite business processes and applications
- Common SOA principles include loose coupling, reusability, and adherence to a communications contract defining information exchange and service description information
- SOA design approach focuses on building Web services for SOA with an emphasis on loose coupling, reusability, and adherence to communication contracts.
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Description
Test your knowledge of multi-tier architecture and load balancing with this quiz. Learn about splitting the middle tier, web farms for load balancing, and the role of application servers in hosting APIs.
