Question 1

An XML data object is converted to a custom type via the process of ____________.

Accepted Answer

A)  deserialization 
B)  SOAP decoding 
C)  typecasting 
D)  None of the above. A

Question 2

A WCF web service in Visual Web Developer consists of ________.

Accepted Answer

A)  a code-behind file 
B)  a Web.config file 
C)  an SVC file 
D)  All of the above D

Question 3

Each operation in a RESTful web service is identified by a unique _________.

Accepted Answer

A)  URL 
B)  proxy object 
C)  interface 
D)  None of the above A

Question 4

JSON format is _________ compared to XML format.

Accepted Answer

A)  of higher quality 
B)  more verbose 
C)  less verbose 
D)  None of the above

Question 5

JSON is a text-based data-interchange format used to represent objects in JavaScript as collections of _________ represented as strings.

Accepted Answer

A)  data/format pairs 
B)  primary key/data rows 
C)  definition/key pairs 
D)  name/value pairs

Question 6

Which is a not requirement of a custom data type to be used in web services

Accepted Answer

A)  Any variables to be accessed during runtime must be declared WebVar. 
B)  The class with the web methods must provide a Public default constructor. 
C)  Properties and instance variables that should be serialized must be declared Public. 
D)  Properties that should be serialized must provide both get and set accessors.

Question 7

The ________ attribute exposes a class to client access.

Accepted Answer

A)  DataEndpoint 
B)  DataBinding 
C)  DataMember 
D)  DataContract

Question 8

The ________ attribute maps a method to a unique URL that can be accessed via an HTTP GET operation programmatically or in a web browser.

Accepted Answer

A)  OperationContract 
B)  WebGet 
C)  OperationBinding 
D)  UriTemplate

Question 9

For a WCF web service to return data in JSON format, WebGet's ResponseFormat property must be set to ________.

Accepted Answer

A)  WebMessageFormat.Json 
B)  MessageFormat.Json 
C)  an SVC file 
D)  All of the above

Question 10

The machine on which the web service resides is commonly referred to as the ___________.

Accepted Answer

A)  web service host 
B)  service machine 
C)  web machine 
D)  None of the above.

Question 11

To have the same object of a web service class handle all calls to the service, the ServiceBehavior attribute's InstanceContextMode must be set to ___________.

Accepted Answer

A)  PerSession 
B)  Single 
C)  PerCall 
D)  PerInstance

Question 12

SOAP is based on ________.

Accepted Answer

A)  HTML 
B)  XML 
C)  HTTP 
D)  All of the above

Question 13

An application that consumes a SOAP-based web service consists of a ________ class and a ________ application.

Accepted Answer

A)  client, virtual 
B)  proxy, client 
C)  virtual, proxy 
D)  user, proxy

Question 14

A web service's methods can be called by methods on other machines using ___________.

Accepted Answer

A)  Representational State Transfer (REST) architecture 
B)  Simple Object Access Protocol 
C)  Both (a) and (b). 
D)  None of the above.

Question 15

Which of the following is false

Accepted Answer

A)  WCF is a set of technologies for building distributed systems in which system components communicate with one another over networks. 
B)  Since WCF is a common framework for all communication between systems, it allows you to learn only one programming model to use WCF. 
C)  Web services promote software reusability in distributed systems that typically execute across the Internet. 
D)  Web services allow its methods to be called by methods on other machines via different data formats and protocols.

Question 16

Each SOAP call is packaged in a XML message called a SOAP _________

Accepted Answer

A)  envelope 
B)  packet 
C)  transfer 
D)  None of the above

Question 17

Once the user's information is stored in a session variable, ______.

Accepted Answer

A)  web methods can return personalized and localized results 
B)  the application will perform better because less information needs to pass between the client and the server. 
C)  Both (a) and (b). 
D)  None of the above.

Question 18

In the Web.config file, the service binding in the endpoint element must be set to ________ to support REST-based HTTP requests.

Accepted Answer

A)  webHttpBinding 
B)  wsHttpBinding 
C)  basicHttpBinding 
D)  netHttpBinding

Question 19

REST-based web services differ from SOAP-based web services in that ________.

Accepted Answer

A)  REST operations must be accessed through a web service proxy object 
B)  REST services are less verbose than SOAP-based services 
C)  the request and response of REST services are not wrapped in envelopes and are not necessarily in XML format 
D)  None of the above.

Question 20

All of the following are key components of a WCF service except:

Accepted Answer

A)  contract 
B)  operation 
C)  address 
D)  binding

Exam 22: Windows Communication Foundation Wcf Web Services in C#