General .NET MCQs

1. Your Web application lets users upload files and is hosted in Microsoft IIS 6.0 on a server named ABC-SR01. The application uses the default application pool with Windows Authentication. You cannot upload a file from your workstation using the application; instead, you see an access denied message. To fix this problem, you enable debugging. Next, you should _______.

2. Which of the following kick in the Garbage Collector (GC) process?

3. Which of the following keywords is used to include existing namespace in a C# program?

4. True or false? In C#, a class can inherit from multiple interfaces.

5. Can you prevent your class from being inherited and become a base class for some other classes?

6. To configure authentication for your Web application so clients cannot access it anonymously, but access is allowed for users from untrusted domains, where should the following code be added to?

7. In ASP.NET, does EnableViewState allow the page to save user input on a form?

8. In ASP.NET, postback occurs in which of the following forms?

9. How do you manage states in an ASP.NET application?

10. Which C# code will output an element's value from a multidimensional array?

11. Which of the following is not a VALID C# access specifier ?

12. A class declared with the sealed keyword cannot be a base class.

13. Which of the following are part of ASP.NET?

14. What type of processing model does ASP.NET simulate?

15. Which of the following reasons make C# a widely used professional language?

16. Which of the following namespaces contain types that enable interaction with system processes, event logs, and performance counters?

17. Which namespace contain the types necessary to build Windows Communication Foundation (WCF) service and client applications?

18. Which of the following would force an immediate garbage collection of all generations?

19. In ASP.NET, why is Global.asax used?

20. Which caching type is supported by ASP.NET?

21. In ASP.NET, which method do you invoke on the Data Adapter control to load your generated dataset?

22. In C#, what does the following code do: class Test: Form { }

23. Which of the following represents a thread-safe map of key/value pair and can be used in a multi-threaded environment?

24. How is ASP.NET different from classic ASP?

25. How many generations does Garbage Collector use for Small Objects in .Net?

26. Which of the following 'type' of members are accessible only within files in the same DLL ?

27. When do you have to declare a class abstract?

28. A method _______ an exception when that method detects that a problem has occured.

29. Which of the following is the actual .net code translated into?

30. Which of the following is a valid C# constant definition?

31. In .net, can a class inherit from several classes

32. To ensure that the timing and performance data of your web application is gathered and only made available to users when they are logged on the web server, which code should you add to the Web.config file?

33. Which of the following namespaces contain types that support deployment of ClickOnce applications?

34. In which of the following GC Collection mode the garbage collector determines whether the current time is optimal to reclaim objects?

35. While browsing your Web application in IIS 6.0, you receive a Server Application Unavailable error. The application event log states: It is not possible to run two different versions of ASP.NET in the same IIS process. Please use the IIS Administration Tool to reconfigure your server to run the application in a separate process. To solve this problem as quickly as possible, you should _______.

36. In ASP.NET, how do you register a user control?

37. In C#, for a class to use an interface, it must _______.

38. If an IndexofAny method is passed an array of characters, _______.

39. Your Web application includes a page named ErrorPage.aspx. To manage unhandled application exceptions, ErrorPage.aspx should be shown and exception data should be written to the event log. Your web.config file includes the following code: Next, you should consider _______.

40. In your Web application, you create a class to implement the IHttpHandler interface. Which code will display the Warning.jpg image in the browser whenever the handler is requested?

42. All methods in an abstract base class must be declared abstract.

43. In your Web application named ABCWebApp1, you have configured a custom-templated server control named ABCSC that has child controls in the page. To help ensure distinctive identification of the child controls within the hierarchy of the page, you should consider applying the _______ interface.

44. Evaluate. Which statement must be true for the code to compile and run correctly? public class B : A { public B(int i) :base(i) { } }

45. Which of the following methods is used for destroying threads?

46. How does the .Net framework define a Large Object?

47. Which of the following is NOT a reserved keyword in C#?

48. In ASP.NET, how do you explicitly kill a user session?

49. In ASP.NET, which one of the following namespaces contains the definition for IdbConnection?

50. Which of the following is not a VALID integer literal?

51. Which of the following is not a VALID variable type in C#?

52. Your Web appplication, ABCApp1, is hosted on ABC-SR13 and runs an instance of MS SQL Server 2005 locally configured to use Windows Authentication. As you prepare to configure the role management and membership providers on ABC-SR13, you should consider using _______.

53. In ASP.NET, what is the difference between Response.Write() and Response.Output.Write()?

54. Consider the following: class A { private int myInt; public void SetMyInt(int value) { myInt = value; } public bool Equals(A other) { return other.myInt == myInt; } } Note: The field myInt is Private. Is 'other.myInt' accessible from within the Equals Method?

55. Enums can have extension methods

56. How many string objects are created in this piece of code: string first = 'tick'; string second = first + 'tech'; second += 'fly';

57. You must add a new custom control to an .aspx page in your Web application, with these requirements: • The state of the custom control must remain static for 2 minutes • The cache settings of other elements on the page must not be affected by the settings for the new custom control Which code will meet the requirements when added to the Web.configfile?

58. When an .aspx page is requested from the web server, in which format is the output rendered to the browser?

59. How many server forms can be added to a .aspx page?

60. Which particular namespace has to be included in a C# program to be able to use following statement? Console.WriteLine('Hello World')

61. In C#, it is possible to pass methods as arguments for other methods without modification.

62. Which of the following defines a String literal?

63. Which of the following defines a Thread?

64. In C#, how does the following code measures time? Thread.Sleep(time)

65. Which of the following is not a component of the .NET framework?

66. In C#, which type of variable is declared inside a method?

67. In the body of a method, which variable does C# use to refer to the current object whose method is being invoked?

68. In the ASP.NET server control, which provides an alternative way of displaying text on web page?

69. In C#, which of the following describes a local variable?

70. In C#, which of the following is the proper header for a class that intends to use an interface?

71. In which of the following GC Collection mode does the garbage collector determine whether the current time is optimal to reclaim objects?

72. Where are the String class and Char structure found?

73. Which of the following defines a delegate?

74. Which of the following describes what this code snippet implies? namespace TestApplication { class HelloWorld {} }

75. Which type of block encloses code that could throw an exception?

76. In C#, which code converts a string to lowercase?

77. In C#, which of the following is created from this code? class Test: Form { }

78. In ASP.NET, which of the following is the extension of a web user control file?

79. Which of the following defines synchronization?

80. In C#, which of the following does this code create? String mystring;

81. Which of the following actions does an abstract class create?

82. Which of the following .NET framework classes can be used for Custom Parallel Partitioning ?

83. Which of the following is not contained in the ThreadPriority enumeration?

84. Which of the following exceptions is thrown when a member/class lookup results in more than one member/class matching the lookup criteria?

85. In which of the following Generations does the CLR allocate memory for new objects?

86. Which type of code is the following? public class A { IEmailSender _emailSender public A(IEmailSender emailSender) { _emailSender = emailSender; } private void SendEmail() { _emailSender.Send(); } }

87. In C#, which of the following describes two StringBuilder objects that contain the same string?

88. Your Web application, ABCWebApp1, is configured to use Windows Authentication. After granting a specific group NTFS permissions to access a specific file named ABC.doc, you need to ensure that users not belonging to this group cannot access the file. Which of the following should you include to ensure unauthorized access?

89. Which of the following often results in an event?

90. Which of the following is the first event to be triggered in an .aspx page?

91. How do string indexers treat strings?

92. Which of the following is a valid syntax of entry point for all C# programs?

93. In C#, which of the following is used to define two methods in a single class with the same name but with different sets of argument types?

94. Which action will occur when a method detects that a problem has occurred?

95. Which class are exception objects derived from?

96. In C#, which of the following is used to return a thread from a suspended state?

97. Which of the following is used to create a string literal exclude escape sequence?

98. In C#, which of the following is an instance variable?

99. Which methods are used to lock and unlock an object?

100. Which of the following is the correct way to define a namespace alias in VB.NET?

101. In ASP.NET, which of the following describes IsPostBack?

102. In ASP.NET, to add a custom control to a Web form, it is necessary to register with which of the following?

103. Which of the following does BCL stand for?

104. In ASP.NET, which control does not have any visible interface?

105. In C#, which class is extended by every class directly or indirectly?

106. Which method should you consider using in order to develop an application that meets the following requirements? • A different ASPX page is displayed when the application's original URL is entered • After the page executes, the original URL is not visible to users • A single client browser request is sufficient for the execution of a page

107. How is concatenation of strings done?

108. In ASP.NET, which class is used to derive custom controls?

109. Which of the following Generations contains the longest surviving objects?

110. Because .NET treats all languages as equal, a class written in C# should be equivalent to a class written in VB.NET, and an interface defined in Managed C++ should be exactly the same as one that is specified in Managed COBOL. Languages must agree on the meanings of these concepts before they can integrate with one another. Which of the following provides the specifications for this?

111. Dot NET Framework programs are compiled into CPU independent instruction set, named:

112. The primary building block of the .NET framework is

113. Where is the application domain created?

114. Which of the following statements is correct with regard to .NET framework managed web pages?

115. The XML web services of .NET framework are built on :

116. An assembly is unloaded:

117. Which of the following is not a method of FileSystem class?

118. Which of the following elements can be part of an Assembly:

119. Suppose you want to eliminate duplicate elements from the array int[] source = { 7, 4, 1, 3, 9, 8, 6, 7, 2, 1, 8, 15, 8, 23} and sort the elements in descending order using LINQ in .Net framework 4.0. Which of the following statements can you use?

120. Considering the image, which of the following is the correct syntax for encoding a particular string in .Net framework 4.0?

121. How do you add MetaDescription to your web page in .Net framework 4.0?

122. How will you implement the logic for the following scenario in .Net framework 4.0? Suppose you have a GridView with paging enabled. You select the third row on page 1 and then move to page 2. Nothing is selected on page 2. When you move back to page 1, the third row should still be selected.

123. Suppose your WCF service root URL is 'http://examples.svc'. What will be the response when you request a WCF data service URL with a $skip system query option, as shown below, in .Net framework 4.0? http://examples.svc/Products?$skip=2&$top=2&$orderby=Rating

124. In WCF, what is the significance of the ReceiveRetryCount property of a Poison message in .Net framework 4.0?

125. What is the purpose of the System.Windows.Data namespace in .Net framework 4.0?

126. How will you count the odd numbers from the array shown below using LINQ in .Net framework 4.0? int[]numbers={5,4,1,3,9,8,6,7,2,0};

127. Which of the following is the correct way to expand the size of application URLs in .Net framework 4.0?

128. Which of the following statements is correct for the bubbling routing strategies used by the routing events in WPF in .Net framework 4.0?

129. Which of the following arrays will be returned as result when you run the following LINQ query in .Net framework 4.0? object[] varnumbers = { null, 1.0, 'two', 3, 'four', 5, 'six', 7.0 }; var doubles = varnumbers.OfType(); foreach (var d in doubles) { Response.Write(d); }

130. Which of the following pieces of information is provided by the WCF service contract in .Net framework 4.0?

131. Which of the following is NOT a valid data source control in .Net framework 4.0?

132. How many columns can you select by $orderby OData system query option in .Net Framework 4.0?

133. Suppose your site has a page called Index.aspx that you no longer use. Search engines may keep requesting this page. Which of the following method will you add to the CodeBehind file of Index.aspx that will send requests (including search engine requests) to Default.aspx in .Net framework 4.0?

134. Which of the following statements is correct for WSHttpBinding of WCF in .Net framework 4.0?

135. Which of the following OData system query options is used to determine the maximum number of records to be returned in .Net framework 4.0?

136. How will you display the view data in the view of an ASP.NET MVC Application?

137. Which of the following is NOT a valid QueryExtender filter option in .Net framework 4.0?

138. Which of the following statements is correct for ASP.NET MVC Routing in .Net Framework 4.0?

139. What result will you get when you run the following LINQ query in .Net framework 4.0? var scoreRecords = new[] { new {Name = 'Alice', Score = 50}, new {Name = 'Bob' , Score = 40}, new {Name = 'Cathy', Score = 45} }; var scoreRecordsDict = scoreRecords.ToDictionary(sr =>sr.Name); Response.Write(scoreRecordsDict['Bob']);

140. What is a Decorator in WPF of .Net framework 4.0?

141. What is default format used to represent data returned in an ADO.NET Data Services response in .Net framework 4.0?

142. What is DLR in .Net framework 4.0?

143. How is data passed from controllers to views in an ASP.NET MVC Application?

144. Which of the following classes of System.Windows.Media namespace provides rendering support in WPF which includes hit testing, coordinate transformation, and bounding box calculations in .Net framework 4.0?

145. How can you determine, at runtime, if your application is running in the 64-bit version of .Net framework 4.0?

146. Which of the following ASP.NET MVC namespaces includes the classes that support forms, input controls, links, partial views, and validation in .Net Framework 4.0?

147. Which of the following is NOT a valid WPF Localizability attribute in .Net framework 4.0?

148. What result will you get when you run the following LINQ query in .Net framework 4.0? List alphabets = new List() { 'whats', 'new', 'in', 'aspnet' }; var alphabetsquery = from alphabet in alphabets select alphabet.Substring(0, 1); foreach (var alpha in alphabetsquery) { Response.Write(alpha); }

149. What is the function of WCF Data contracts in .Net framework 4.0?

150. Which of the following are included in a Static assembly?

151. Which of the following are correct about delegates?

152. Which of the following protocols can be used for .Net Remoting?

153. Which of the following is correct for value and reference types in .NET?

154. Which of these are runtime hosts in .Net Framework?

155. Which of the following run In-Process?

156. A manifest includes the following data about the assembly

157. The Process of automatic memory management involves the following tasks:

158. A standard Windows PE file is divided into a number of sections. Which of the following are not valid native image sections?

159. Which of the following statements is true?

160. Which of the following methods are used to stop a thread?

161. ___________ class grants the permission to manipulate files located in the code assemblies, to code assemblies that match the membership condition.

162. Which of the following protocols can be used for ASP.Net Web Services?

163. When are AssemblyHash values used?

164. In.NET generics, the type parameter:

165. How many classes can a single .NET DLL contain?

166. Where is the Shared assembly generally stored?

167. Which of the following is not correct with regard to shared assembly?

168. Which Portable Executable (PE) file does not contain the assembly manifest?

169. In .NET framework, what are the options available for packaging?

170. Which of the following are public methods of System.Object?

171. Which of the following helps expose COM components to the .NET framework?

172. Which of the following tools can be used to get the metadata information about the assembly and view IL code?

173. Which of the following tools assists Assembly Signing?

174. In which file can you define the 'Process Model' attribute?

175. C# has a keyword called int. Which .NET type does this map to?

176.

Which of the options is being referred to in the following statement:

"All incoming requests are processed by a single server object"

177. A user application-domain can be created:

178. The global assembly cache:

179. What does Managed Data refer to?

180. Which tool can you use to register managed types with the Windows registry?

181. Which of the following files is used to implement application and session level events?

182. Which of these classes are used for loading an assembly into an application domain?

183. Which of the following tools can be used to modify and grant permissions to code groups?

184. Which of the following does not use metadata?

185. Which of the following functionalities does System.Diagnostics class provide?

186. An application can have any number of modules and files. Which of the following is used to link them together into a single assembly?

187. What is the command 'caspol -lg' used for?

188. Which of the following is a must for a private assembly?

189. Code Manager is a the part of:

190. Why doesn't .Net runtime offer deterministic destruction?

191. Consider the following two statements and choose the most appropriate option: Statement 1: Value types are allocated on a stack Statement 2: Reference types are allocated on a managed CLR Heap

192. Which of the following is used to notify all waiting threads of a change in the object's state?

193. Which of the following manages the code during execution?

194. Which type of parameter is passed in subroutines by default?

195. Which of the following is not a member of the Exception class?

196. How many application domains can exist inside a Win32 process?

197. Which of the following helps Assemblies become self describing?:

198. How will you use the thread pool?

199. The runtime is started automatically by ______________ when the .exe is run.

200. Net assembly stores both data and IL code. A tool is available along with the .NET framework to view within the PE. Which of the following is that tool?

201. Which of the following services are provided by CLR?

202. Which of these files is used for debugging an application?

203. Compilers of CLS compliant language generate:

204. Which of these is used to allow managed code to interoperate with unmanaged code?

205. Which of the following statements is correct. (a)A Try block must include Catch or Finally sections. (b)Using an empty Finally section is illegal.

206. The _________________ methods are primarily meant for COM Interoperability use.

207. How does CLR allow multiple applications to be run in a single process?

208. _____________ helped overcome the DLL conflict (faced by the versions prior to .NET).

209. __________ is used to generate the assembly from modules.

210. Which of the following is used as a Serializer for the web services?

211. The IL to native code compilation is done by:

212. ____ is a subset of the CTS.

213. Which of the following is valid and is included in the type definition?

214. Which of the following statements is correct?

215. Which of the following are used in combination to create the identity of an assembly?

216. Which of these Assemblies is used for doing Localization?

217. Which of the following is not a feature of .NET 2.0?

218. ___________ namespace is not defined in the base class library.

219. Since .NET assemblies contain IL code, your proprietary algorithms can be seen by anyone. Which of the following tools protects your intellectual properties?

220. For MSIL code to be executed in PE file, it is necessary to have:

221. __________ assembly can be used to deploy language-specific resources for an application.

222. Which of the following can you use to resolve assemblies, types, and resources?

223. .NET components are accessed from COM via a?

224. How will you prevent concurrent access to your data?

225. Which of the following is correct for CTS?

226. Delay signing allows a shared assembly to be signed with:

227. What happens when enough memory is not available to be allocated to an object?

228. You can create the remote application domain using:

229. Which base class do all web forms inherit from?

230. Microsoft .NET supports value types for performance reasons, but everything in .NET is ultimately an object. Value types are allocated on the stack by default, but they can always be converted into a heap-based, reference-type object. What is this conversion called?

231. A hashtable is serialized by using:

232. The .NET framework comes with a few CLR hosts. Which of the following is a CLR host?

233. Which of the following is used to do garbage collection?

234. How many bits does the int datatype use in .NET?

235. Which of the following tools can be used to configure assemblies located in the GAC?

236. Which of the following is not correct about parameter arrays?

237. Which of the following is incorrect about Structures?

238. Which of the following is not a valid inheritance_mode?

239. In .NET framework, Reflection is used to:

240. Dot Net Framework consists of :

241. Which of the following statements is not correct with regard to .NET assemblies?

242. Which of the following statements is correct with regard to Windows process memory allocation?

243. The code written to target common language runtime services is called :

244. Which of the following should you use to serialize instances of a class?

245. What are the core components of .NET framework data provider model?

246. Which of the following can not be used with files?

247. ____________ class defines the set of information that constitutes input to security policy decisions in System.Security.Policy namespace.

248. A subset of the Common Type System(CTS) is define by the rules of _________.

249. Which of the following can be the entry point of an assembly in Common Language Runtime (CLR)?

250. Which of the following code is not 'managed' by default in .NET framework?

251. Which of the following are the main design goals behind ADO.NET?

252. Xcopy method is not sufficient for deployment:

253. Which of the following namespace are defined in the base class library.

254. Application domains are created by runtime host and the runtime host include:

255. Which of the following does not constitute the benefits of CLR?

256. The global assembly cache:

257. You assigned the version number - 5.3.1.0 to your assembly. The four digits stand for:

258. Which of the following technologies are used for distributed process framework?

259. Which transport protocol is generally used to call an ASP.NET Web Service?

260. Which of the following statements is NOT correct with regard to Portable Executable (PE)?