WCF MCQ (Multiple Choice Questions), WCF Online Quiz

1 .

WCF stands for_______

A)

Windows Common Framework

B)

Windows Communication Foundation

C)

Windows Connection Framework

D)

Windows Communication Framework

Correct Answer : Windows Communication Foundation

2 .

WCF is Developed by________

A)

Apple Inc

B)

NET Foundation

C)

Oracle Corporation

D)

Microsoft Corporation

Correct Answer : Microsoft Corporation

3 .

WCF binding supports legacy ASMX web service

A)

wsHttpBinding

B)

WebHttpBinding

C)

BasicHttpBinding

D)

None of the above

Correct Answer : BasicHttpBinding

4 .

WCF exposes Service MetaData using following

A)

Mex Endpoint

B)

ServiceMetaData httpGetEnabled Flag

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Both (A) and (B)

5 .

Which type of contract is applicable to interface in WCF?

A)

Operation contract

B)

Data contract

C)

Message contract

D)

Service contract

Correct Answer : Operation contract

6 .

Always end your URI (or URL) with a ________ to avoid an extra trip to the server to determine that it is a site rather than a directory.

A)

Slash

B)

Hyphen

C)

Backslash

D)

Double slash

Correct Answer : Slash

7 .

What types of transaction manager WCF supports?

1. OLE Transaction

2. Light Weight

3. WS- Atomic Transaction

A)

Only 1

B)

1 and 2

C)

1, 2 and 3

D)

None of the above

Correct Answer : 1, 2 and 3

8 .

Which attribute is used to define a service class in WCF?

A)

Service

B)

WCFService

C)

ServiceContract

D)

None of the above

Correct Answer : ServiceContract

9 .

Which is the default Transfer mode in WCF?

A)

Streamed

B)

Buffered

C)

StreamedRequest

D)

StreamedResponse

Correct Answer : Buffered

10 .

Which of the following WCF Service is NOT true?

A)

A WCF Service can perform calculations

B)

A WCF Service can be consumed by Web applications

C)

A WCF Service can be consumed by Windows applications

D)

A WCF Service cannot return a dataset

Correct Answer : A WCF Service cannot return a dataset

11 .

WCF Mex endpoint uses which standard WCF contract____

A)

IMetaData

B)

IMexEndpoint

C)

IMetaDataExchange

D)

None of the above

Correct Answer : IMetaDataExchange

12 .

Which attribute is used to decorate enum variables to be a part of datacontract?

A)

EnumMember

B)

DataMember

C)

EnumElement

D)

EnumVariable

Correct Answer : EnumMember

13 .

Which WCF binding does not use port in there address scheme_________

A)

netTcp

B)

netNamed

C)

BasicHttp

D)

None of the above

Correct Answer : netNamed

14 .

Which serviceDebug property in configuration file of WCF Service needs to set true to view unhandled exception details?

A)

enableException

B)

includeException

C)

includeExceptionDetailInFaults

D)

None of the above

Correct Answer : includeExceptionDetailInFaults

15 .

Which namespace is used to access WCF Service

A)

System.Web

B)

System.Net

C)

System.Service

D)

System.ServiceModel

Correct Answer : System.ServiceModel

16 .

WCF supports which transport schema____

A)

TCP

B)

HTTP

C)

MSMQ

D)

All of the above

Correct Answer : All of the above

17 .

Which is not the correct contract supported by WCF?

A)

SecurityContract

B)

FaultContract

C)

MessageContrac

D)

All of the above

Correct Answer : SecurityContract

18 .

What is default instance mode in WCF?

A)

Singleton

B)

Per-Session

C)

Per-Call

D)

Per-Request

Correct Answer : Per-Session

19 .

WCF attribute to define REST full Service_____

A)

Rest

B)

HttpGet

C)

WebGet

D)

None of the above

Correct Answer : WebGet

20 .

What is the default MaxReceivedMessageSize for WCF Service?

A)

8192 bytes

B)

65536 bytes

C)

2147483647 byte (int max value)

D)

None of the above

Correct Answer : 65536 bytes

21 .

WCF services can communicate with _______.

A)

XML

B)

all programming languages

C)

only the languages included with Visual Studio .NET

D)

multiple platforms and multiple languages

Correct Answer : multiple platforms and multiple languages

22 .

The standard method for storing data that can be transferred easily from one machine or platform to another is _______.

A)

XML

B)

WCF

C)

WSDL

D)

SOAP

Correct Answer : XML

23 .

What are the different isolation levels provided in WCF?

1. Read Uncommitted

2. Read Committed

3. Repeatable Read

4. Serializable

5. Non-Serializable

A)

1, 2 and 5

B)

1, 2, 3 and 4

C)

All of the above

D)

None of the above

Correct Answer : 1, 2, 3 and 4

24 .

Which hosting mechanism is supported by WCF?

A)

IIS

B)

Self Hosting

C)

WAS (Windows Activation Service)

D)

All of the above

Correct Answer : All of the above

25 .

Data that is in _______ format can pass through many firewalls that _______ cannot penetrate.

A)

Soap wcf

B)

text, binary

C)

binary, text

D)

None of the above

Correct Answer : text, binary

26 .

A resource on the Web is uniquely identified by its URI, which means ______ .

A)

Uniform Resource Identifier

B)

Universal Resource Identifier

C)

Uniform Registered Identifier

D)

Universal Registered Identifier

Correct Answer : Uniform Registered Identifier

27 .

Which of the following is FALSE regarding the WSHttpBinding class?

A)

Provides transactions

B)

Provides WS-Addressing

C)

Provides reliable messaging

D)

Provides un-encrypted messages by default

Correct Answer : Provides un-encrypted messages by default

28 .

Which of the following is TRUE regarding service operations and references to objects?

A)

Objects must be serializable

B)

Objects are passed as references

C)

You canâ€™t return values from service operations

D)

You canâ€™t pass parameters to service operations

Correct Answer : Objects must be serializable

29 .

Tools to generate WCF Service Proxy

A)

SvcUtil.exe

B)

VisualStudio

C)

Both (A) and (B)

D)

None of the Above

Correct Answer : Both (A) and (B)

30 .

what maxItemsInObjectGraph property of DataContractSerializer mean?

A)

Max size of DataContract

B)

Max Number of Items inside DataContract

C)

Max number of items that can be searialize/deserialized in a single WCF call

D)

None of the above

Correct Answer : Max number of items that can be searialize/deserialized in a single WCF call

31 .

What is the default WCF Request Send/Receive timeout?

A)

10 sec

B)

1 min

C)

5 min

D)

10 min

Correct Answer : 1 min

32 .

WCF binding to supports REST based service_____

A)

WebHttpBinding

B)

wsHttpBinding

C)

BasicHttpbinding

D)

None of the above.

Correct Answer : WebHttpBinding

33 .

Which WCF object is used to host WCF Service?

A)

Web

B)

Host

C)

Service

D)

ServiceHost

Correct Answer : ServiceHost

34 .

Hosting of WCF Service in Windows Activation Service (WAS) is available in IIS version_______

A)

IIS 4.0

B)

IIS 5.0

C)

IIS 6.0

D)

IIS 7.0

Correct Answer : IIS 7.0

Explanation :

WAS is a Process Activation Service that comes with Windows Vista and IIS 7. WAS was designed to support non-HTTP protocols with the help of IIS 7 whereas IIS 6 supports only HTTP protocols. If you want to use Non-HTTP Protocols like NetTcpBinding and NetMSMQBinding over IIS , WAS hosting is the only option.

WAS Hosting : The biggest limitation in the WCF architecture before IIS 7 version was no support for non-HTTP protocols over IIS. To enable the usage of a complete list of WCF-Supported protocols including non-HTTP, such as net.tcp, net.pipe, net.msmq - WAS (Windows Activation Service) is the platform to be used.

35 .

WCF Contract used to send information in soap message header?

A)

DataContract

B)

ServiceContract

C)

MessageContract

D)

None of the above

Correct Answer : MessageContract

36 .

WCF supports Operation overloading by setting following operation contract attribute?

A)

Action

B)

Name

C)

Overload

D)

None of the above

Correct Answer : Name

37 .

What is default Value for maxItemsInObjectGraph property?

A)

8192

B)

50000

C)

65536

D)

None of the above

Correct Answer : 65536

38 .

Which protocol is supported by Mex Endpoint?

A)

tcp

B)

netnamed

C)

http/https

D)

All of the above

Correct Answer : All of the above

39 .

Which of the following binding supports Communication with callback?

A)

wsDualHttpBinding

B)

wsHttpBinding

C)

Both (A) and (B)

D)

None of the above

Correct Answer : wsDualHttpBinding

40 .

WCF is a part of .Net Framework_____

A)

1.0

B)

2.0

C)

3.0 and above

D)

None of the above

Correct Answer : 3.0 and above

41 .

WCFDataAnnotation is used to automatically validate member of________

A)

FaultContract

B)

DataContract

C)

ServiceContract

D)

MessageContarct

Correct Answer : DataContract

42 .

Which is a valid WCF Transaction Protocal?

A)

OleTx

B)

LightWeight

C)

WS-Atomic (WAST)

D)

All of the above

Correct Answer : All of the above

43 .

What are the MEPs available in WCF?

1. Data Gram

2. Request and Response

3. Duplex

4. Simplex

A)

1 and 2

B)

1, 2 and 3

C)

1, 3 and 4

D)

None of the above

Correct Answer : 1, 2 and 3

44 .

A)

SOAP

B)

XML

C)

WCF

D)

WSDL

Correct Answer : SOAP

45 .

To add a WCF Service, select the solution name in the Solution Explorer and select _______ from File menu.

A)

Add / New Library

B)

Add / New Service

C)

Add / New Web Site

D)

Add / New Solution

Correct Answer : Add / New Web Site

46 .

In Windows Communication Foundation (WCF) applications, which of the following is FALSE regarding Sessions?

A)

Sessions correlate a group of messages into a conversation

B)

They are explicitly initiated and terminated by the receiving application

C)

There is no general data store associated with a WCF session

D)

Messages delivered during a session are processed in the order in which they are received

Correct Answer : They are explicitly initiated and terminated by the receiving application

47 .

Which class in WCF represents the unit of communication between endpoints in a distributed environment?

A)

Message

B)

Binding

C)

ChannelBase

D)

RequestContext

Correct Answer : Message

48 .

WCF service client uses Receive Timeout for_____

A)

Request timeout

B)

Connection timeout

C)

Session Idle Timeout

D)

None of the Above

Correct Answer : None of the Above

Explanation :

There are a number of timeout settings available in WCF bindings. Setting these timeout settings correctly can improve not only your service's performance but also play a role in the usability and security of your service. The following timeouts are available on WCF bindings:

* OpenTimeout

* CloseTimeout

* SendTimeout

* ReceiveTimeout

49 .

Which contract supports TransactionFlow?

A)

Data

B)

Message

C)

Operation

D)

Service

Correct Answer : Operation

50 .

WCF services uses Receive Timeout for____

A)

Operation timeout

B)

Response timeout

C)

Connection timeout

D)

Session Idle Timeout

Correct Answer : Session Idle Timeout

51 .

Which of the following WCF binding does not support reliable session?

A)

wsHttpBinding

B)

basicHttpBinding

C)

netTcpBinding

D)

wsDualHttpBinding

Correct Answer : basicHttpBinding

52 .

When a new project is added to a WCF Service solution, the projects are saved independently.

A)

True

B)

False

C)

None of the above

D)

--

Correct Answer : True

53 .

For technical specifications, the industry standard term URL is preferred to URI.

A)

True

B)

False

C)

None of the above

D)

--

Correct Answer : False

54 .

WCF attribute used to define instance mode?

A)

ServiceContract

B)

ServiceConfiguration

C)

ServiceBehavior

D)

None of the above

Correct Answer : ServiceBehavior

55 .

Maximum number of Mex endpoint for a WCF Service

A)

1

B)

equal to endpoint exposed to user

C)

No limit

D)

None of the above

Correct Answer : equal to endpoint exposed to user

56 .

What is the default MaxStringContentLength for WCF Service?

A)

8192 bytes

B)

65536 bytes

C)

2147483647 byte (int max value)

D)

None of the above

Correct Answer : 8192 bytes

57 .

WCF default message exchange pattern______

A)

Duplex

B)

OneWay

C)

Both (A) and (B)

D)

Request/Response

Correct Answer : Request/Response

58 .

Which of the following attribute is used to define Header and Body Elements of Message Contract?

A)

Header and Member

B)

MessageHeader and MessageMember

C)

MessageHeader and MessageBodyMember

D)

None of the above

Correct Answer : MessageHeader and MessageBodyMember

59 .

Data that is in binary format can pass through any firewall.

A)

True

B)

False

C)

None of the above

D)

--

Correct Answer : False

60 .

WSDL contains information about the names of the methods, the parameters that can be passed, and the values that are returned from the functions.

A)

True

B)

False

C)

None of the above

D)

--

Correct Answer : True