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Web Services Qs
n/a
25
Computer Science
Undergraduate 1
06/08/2013

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Cards

Term
What is Web Services all about?
Definition
Reusability.
Term
What is the front end and back end of Web Services know as?
Definition
The plumbing layer.
Term

 Services must be...

(Hint: 2)

Definition
Interoperable & Loosely coupled.
Term
What is a Common Standard?
Definition
When a Requester talks to a Provider.
Term

What is a ESB?

(Enterpise Service Bus)

Definition
When two service providers talk to each other.
Term
What makes a service a black box?
Definition
When there is a known input, expected output, but nothing else is known.
Term
What is a Contract?
Definition
It gives a brief interface (not that kind) about the independent service.
Term
What is a Broker?
Definition
It maintains a registry where all the contracts are defined.
Term
What is a Service Registry?
Definition
A phone book of contracts.
Term
What is the life-cycle of Web Services?
Definition

- Provider publishes contract to the Broker (Service Registry).

- Requester looks up the Service/Contract from the Broker.

- Requester sends input to Provider, and expects an output.

Term
What is the relationship between Web Services and SOA?
Definition
Web Services is an implementation of SOA.
Term
How is WSDL pronouced?
Definition
wis-dull
Term
What is the wsdl?
Definition
It is the contract/endpoint interface (Provider to Broker).
Term

What is in the wsdl file?

(Hint: 5)

Definition
Return type, Arguments, Class name, Method name, and Service Location (IP).
Term

What are some major tags in a WSDL file?

(Hint: Def - TeMPO)

Definition
Definition, Type, Message, Port-Type, Operation, Binding, Service.
Term
What is publishing a Web service?
Definition
Exposing the web service.
Term
What is consuming a Web Service?
Definition
Using a web service.
Term

What technologies are used to manage the Service Registry?

(Hint: 2)

Definition
UDDI & ebXML.
Term
What holds the WSDL file?
Definition
The Service Registry.
Term
From Provider to Broker, what happens?
Definition
The contract is published.
Term
From Broker to Requester, what happens?
Definition
Service lookup or send a link to the wsdl file.
Term
From Requester to Provider, what happens?
Definition
It consumes the service.
Term
A Web Service is made up of what 3 main parts?
Definition
Requester, Broker, & Provider.
Term
What two approaches can create a SOAP based web service?
Definition
Contract First & Contract Last.
Term
What are two xml parsers?
Definition
DOM & SAX
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