Podcast
Questions and Answers
In a traditional teleprocessing architecture, where is all processing performed?
In a traditional teleprocessing architecture, where is all processing performed?
- In a separate central processing unit (CPU)
- At the terminals
- Distributed across a network of computers
- Within the boundaries of the same physical computer (correct)
What was a significant burden on the central computer in the traditional teleprocessing architecture?
What was a significant burden on the central computer in the traditional teleprocessing architecture?
- Communicating with the file-server
- Carrying out work on behalf of the terminals
- Formatting data for display on the screen
- Running application programs and the DBMS (correct)
In a file-server architecture, where do the applications and DBMS run?
In a file-server architecture, where do the applications and DBMS run?
- On the file-server
- On each workstation (correct)
- On a separate central server
- On dedicated terminal servers
What is the primary purpose of a file server in a file-server architecture?
What is the primary purpose of a file server in a file-server architecture?
What is a disadvantage of the file-server architecture mentioned in the text?
What is a disadvantage of the file-server architecture mentioned in the text?
Which component separates into client and server in the client–server architecture?
Which component separates into client and server in the client–server architecture?
What are the advantages of three-tier architecture mentioned in the text?
What are the advantages of three-tier architecture mentioned in the text?
What problem does three-tier architecture eliminate compared to the traditional two-tier client–server model?
What problem does three-tier architecture eliminate compared to the traditional two-tier client–server model?
Which type of middleware allows subscribers to receive messages without knowledge of publishers?
Which type of middleware allows subscribers to receive messages without knowledge of publishers?
Which technology is a standard for server programming in Java?
Which technology is a standard for server programming in Java?
What is the main function of application servers in a multi-tier architecture?
What is the main function of application servers in a multi-tier architecture?
In high-throughput environments, what can replace a single web server for load balancing?
In high-throughput environments, what can replace a single web server for load balancing?
What does CORBA enable across languages and computers?
What does CORBA enable across languages and computers?
What is the primary function of Transaction Processing Monitors (TP Monitors)?
What is the primary function of Transaction Processing Monitors (TP Monitors)?
What is the purpose of the Java Transaction API (JTA)?
What is the purpose of the Java Transaction API (JTA)?
How do Web services differ from other Web-based applications?
How do Web services differ from other Web-based applications?
Which technology is NOT emphasized in RESTful Web services?
Which technology is NOT emphasized in RESTful Web services?
What is the key focus of Service-Oriented Architectures (SOA)?
What is the key focus of Service-Oriented Architectures (SOA)?
What is the cost for Amazon S3 storage usage based on?
What is the cost for Amazon S3 storage usage based on?
Which technology is NOT a key part of Web services?
Which technology is NOT a key part of Web services?
What is a disadvantage of the file-server architecture mentioned in the text?
What is a disadvantage of the file-server architecture mentioned in the text?
In a three-tier client–server architecture, where does the user interface layer run?
In a three-tier client–server architecture, where does the user interface layer run?
What did the traditional two-tier client–server architecture lack compared to the three-tier design?
What did the traditional two-tier client–server architecture lack compared to the three-tier design?
What is a key advantage of N-tier architectures mentioned in the text?
What is a key advantage of N-tier architectures mentioned in the text?
What is the primary function of middleware in a distributed system?
What is the primary function of middleware in a distributed system?
Which type of middleware enables asynchronous calls between client and server applications?
Which type of middleware enables asynchronous calls between client and server applications?
What is the standard for server programming in Java?
What is the standard for server programming in Java?
In high-throughput environments, what can replace a single web server for load balancing?
In high-throughput environments, what can replace a single web server for load balancing?
What is the primary function of Transaction Processing Monitors (TP Monitors)?
What is the primary function of Transaction Processing Monitors (TP Monitors)?
What does CORBA enable across languages and computers?
What does CORBA enable across languages and computers?
What is the main purpose of Database-oriented middleware like ODBC and JDBC?
What is the main purpose of Database-oriented middleware like ODBC and JDBC?
What is the key focus of Service-Oriented Architectures (SOA)?
What is the key focus of Service-Oriented Architectures (SOA)?
Which technology is NOT a key part of Web services?
Which technology is NOT a key part of Web services?
What is the primary focus of RESTful Web services?
What is the primary focus of RESTful Web services?
What is the primary emphasis of Service-Oriented Architectures (SOA)?
What is the primary emphasis of Service-Oriented Architectures (SOA)?
What is a key principle of SOA design approach?
What is a key principle of SOA design approach?
In a traditional teleprocessing architecture, where is all processing performed?
In a traditional teleprocessing architecture, where is all processing performed?
What is the primary purpose of a file server in a file-server architecture?
What is the primary purpose of a file server in a file-server architecture?
What was a significant burden on the central computer in the traditional teleprocessing architecture?
What was a significant burden on the central computer in the traditional teleprocessing architecture?
What are the terminals' messages routed through in a traditional teleprocessing architecture?
What are the terminals' messages routed through in a traditional teleprocessing architecture?
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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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.
