Model Question Paper. Credits: 4 Marks: 140. Part A (One mark questions)

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1 Model Question Paper Subject Code: MT0040 Subject Name: VB.Net Credits: 4 Marks: 140 (One mark questions) 1. The is a systematic class framework used for the development of system tools and utilities. A..Net Framework Class Library (FCL) B..Net tools C. Visual Basic 2005 D. Visual Basic 6 2. The model does not offer a model for source code reuse. A. COM+ B. DCOM C. COM D..Net 3. allow custom items of information about a program element to be stored with an assembly's metadata. A. Properties B. Attributes C. Methods D. Classes 4. The corresponding.net FCL type for Short is. A. System.Int32 B. System.Int64 C. System.Int16 D. System.Object 5. The member "clear" of the Array class that sets a range of array elements to zero, false or null reference is a method. A. Shared B. Method

2 C. Class D. Object 6. The method converts an OLE automation date value to a DateTime Instance. A. Today B. TimeOfDay C. Now D. FromOADate 7. The function procedures are by default. A. public B. private C. protected D. inherited 8. Every optional argument in the procedure definition must specify a value which must be a constant expression. A. constant B. default C. integer D. character 9. Type casting in VB.Net is implemented by means of statement. A. Type() B. TypeDef() C. Btype() D. Ctype() 10. The enable us to pass data between a program and a class. A. Functions B. Properties C. Procedures D. Variables 11. Using a variable does not enable us to create read-only properties that are often required by a class. A. public B. private C. protected D. friend

3 12. A performs invisible tasks even if you write no code. A. destructor B. private method C. constructor D. function 13. The does not describe inherited member functions, inherited operators, and overridden virtual member functions. A. Class Library Reference B. Library C. Objects D. Classes 14. The group classes according to their common services. A. objects B. inheritance C. Namespaces D. programs 15. Whenever an application is created, a is added. A. Form B. Class C. Property D. Object 16. are interactive objects that you place in dialog boxes or other windows to carry out user actions. A. Controls B. Objects C. Classes D. Forms 17. The class provides static methods to start, stop, or filter Windows messages in an application. A. Forms B. Windows C. Application D. Control

4 18. The method starts the application whether it is GUI based or not. A. Exit B. Run C. ExitThread D. DoEvents 19. If you need to require users to enter data in a well-defined format, such as a telephone number or a part number, you can accomplish this quickly and with minimal code by using the control. A. TextBox B. MaskedTextBox C. Label D. ComboBox 20. The error occurs when a command attempts to perform an invalid action. A. Run-time B. Syntax C. Logical D. Typographical 21. To view different system exceptions, select the Exceptions option of the menu. A. File B. Edit C. Debug D. Window 22. The example of various Word document windows appearing within the Word application window corresponds to application. A. Single Document Interface (SDI) B. Form interface C. Multiple Document Interface (MDI) D. Class Interface 23. The enables you to set the runtime position of one or more forms on screen. A. Form Layout window B. Form Design Window C. Properties Window D. Project Explorer 24. You can use the method with the MdiLayout enumeration to rearrange the child forms in an MDI parent form.

5 A. Layout B. MDI C. Layoutsdi D. LayoutMdi 25. ODBC provides a language interface to relational databases. A. C B. Java C. C# D. C The provides a language independent interface based on a binary standard. A. Distributed Component Object Model (DCOM) B. Component Object Model (COM) C. OLE DB D. ODBC 27. In architecture, data is retrieved from a database and cached on your local machine. A. Connected B. Disconnected C. Client Server D. 3-tier 28. A.NET Framework is an object that is reusable, can interact with other objects, and provides control over external resources and design-time support. A. class B. Component C. Window D. Web Form 29. The control does not have a Window handle. A. ListBox B. Activex C. Lightweight D. HeavyWeight 30. The user designed control needs to make calls to the Windows API that require a as an argument.

6 A. Window B. window handle (hwnd) C. EditAtDesignTime property D. IUnKnown interface 31. The is a semi-compiled language that gets compiled into native code by the.net runtime at execution time. A. C# language B. MSIL C. compiler D. native language 32. An object A refers to object B and object B refers to object A; this kind of reference is called as. A. associative reference B. linear reference C. circular reference D. reference 33. Getting immediate feedback from the compiler is known as. A. compilation B. feedback C. positive feedback D. background compilation 34. In VB.NET, every project is part of what Microsoft calls a. A. project B. solution C. windows D. forms 35. The menu on the main menu bar is always available to bring a specific window of the IDE into focus. A. View B. File C. Project D. Tools 36. Every VB.NET application must have a place to use as an that contains the code that gets executed automatically when the program runs.

7 A. code editor B. program editor C. exit point D. entry point 37. VB.NET does not have a way to comment out multiple lines except through the tool on the toolbar. A. debugging B. comment C. Favorites D. Help 38. Use a to force a literal to be a Double. A. # (or an R) B. % D. ^ 39. In VB.NET, a string can contain up to about Unicode characters. A. 65, 536 B. 2 billion C. 2 trillion D. 2 lakhs 40. The class represents the data commands and the database connection used to fill data sets or update the data source. A. Data B. Database C. System.Data D. DataAdapter

8 (Two mark questions) 41. A is a logical grouping of classes that can in turn contain other namespaces, so that a collection of namespaces forms an inverse hierarchical tree. A. Naming scheme B. namespace C. object D. tree 42. The value range of unsigned 16-bit integer System.UInt16 is and. A. -128,127 B. 0, 4,294,967,295 C. 0, 65,535 D. 0, 18,446,744,073,709,551, Which of the following is the correct syntax for procedure declaration using optional argument? A. Sub subname(byval As type1, Optional ByVal arg2 As type 2 = default) B. Sub subname(optional ByVal arg2 As type 2 = default, ByVal As type1) C. Sub subname(optional ByVal arg2 As type 2 = default) D. Sub subname(byval As type1, Optional ByVal) 44. Using a subclass can change the behavior of methods inherited from the parent class. A. overrriding B. method overriding C. overloading D. constructor overloading 45. With Windows.Forms, most resizing code is no longer necessary because two very useful properties and have been added to every visible control. A. Anchor, Dock B. Anchor, resize C. resize, dock D. Dock, setvisible 46. The control Displays text entered at design time that can be edited by users at run time, or changed programmatically and the control enables text to be displayed with formatting in plain text or rich-text format (RTF).

9 A. Label, RichTextBox B. Label, TextBox C. RichTextBox, TextBox D. TextBox, RichTextBox 47. If you determine that the control's data is not valid, you can cancel the event by setting this object's Cancel property to. A. Validating, true B. Focus, true C. MouseClick, False D. ButtonClick, true 48. To create a form in Visual Basic.Net as an MDI form, we have to set its property to true. A. MDI B. IsMDI C. SDI D. IsSDI 49. With respect to.net data providers, interface is used to establish a connection to a specific data source and interface is used to execute a command at a data source. A. IDbCommand, IDbConnection B. IDbCommand, IDataReader C. IDbConnection, IDbCommand D. IDbDataAdapter, IDbConnection 50. Objects notifying others of an event is called and Object registered to an event is called. A. Subscriber, Publisher B. Publisher, Writer C. Subscriber, Notifier D. Publisher, Subscriber 51. The feature built into the.net CLR eliminates this problem of using much smarter algorithms to determine when circular references can be cut and the memory reclaimed. A. garbage collection; circular references B. memory collection; references C. collections; references

10 D. references; collections 52. With the shared WriteLine method, the text you want displayed must be surrounded by and surrounded by. A. double quotes; parentheses B. single quotes; parentheses C. single quotes; double quotes D. double quotes; curly braces 53. A Long data type is an 8-byte signed integer, whose values lie between and. A. 9,223,372,036,854,775,807; 9,223,372,036,854,775,808 B. 0; 65,536 C. 9,223,372,036,854,775,808; 9,223,372,036,854,775,807 D. -65,536; 65, is used to carry out delegation: you can delegate to the internal contained object the tasks that need to be carried out; is a term for building a model of an object in code A. Abstraction; Containment B. Containment; Abstraction C. Inheritance; Abstraction D. Containment; Inheritance 55. In an ArrayList class, the method searches the array list to determines whether an element is in the ArrayList and the method Gets or sets the element at the specified index. Is the default property of ArrayList. A. Item; Contains B. Capacity; Item C. LastIndexOf; Length D. Contains; Item 56. In Inheritance, the access is limited to code in the current assembly and in access only objects of the parent s type have access to these members. A. Friend; Protected B. Friend; Private C. Protected; Friend D. Protected; Protected Friend

11 57. The assembly is a single namespace that contains the classes needed for sizing and positioning. The assembly is also a single namespace and contains the classes for all the controls as well as the Windows.Forms.Form class for form instances. A. System.Drawing; System.Windows.Forms B. System.Windows.Forms; System.Drawing C. System.Windows; System.Drawing D. System.Drawing; System.Windows 58. In addition to the Anchor and Dock properties, you use the new and properties to specify how small or large a user can make your form. A. Minimum; Maximum B. MinSize; MaxSize C. MinimumSize; MaximumSize D. Min; Max 59. The most important member of the CommonDialog class is, which uses to determine which box to show. A. Show; polymorphism B. Display; polymorphism C. ShowDialog; polymorphism D. ShowDialog; inheritance 60. Two of the most useful classes in the System.Net namespace are and, which are abstract base classes that serve as templates for object-oriented wrappers placed around HTTP and other Internet protocols. A. WebRequest; WebResponse B. Request; Response C. HTTPRequest; HTTPResponse D. getrequest; getresponse

12 Part C (Four mark questions) 61. Match the following: 1. Classes 2. Structures 3. Enumerations 4. Interfaces A. are of value types B. are of reference data types C. are virtual base classes D. a related set of constants 62. Match the following: 1. Now 2. Today 3. ToShortTimeString 4. ToLocalTime A. Returns the current date B. Converts the current coordinated universal time (UTC) to local time. C. Returns the current local date and time D. Converts a DateTime instance to its short time string representation

13 63. Match the following: 1. Abstraction 2. Polymorphism 3. Encapsulation 4. Inheritance A. Means that inherited objects know what methods they should use, depending on where they are in the inheritance chain. B. You can create a general class that defines traits common to a set of related items. C. The process of taking concrete day-to-day objects and producing a model of the object in code that simulates how the object interacts in the real world. D. used to call data hiding. It means hide data, but define properties and methods that let people access it. 64. Match the following: 1. Inheritance 2. Method Overriding 3. Virtual Methods 4. Abstract classes A. A subclass can change the behavior of methods inherited from the parent class. B. The last implementation of a method in class hierarchy. C. The ability of a class to gain the properties and behavior of an existing class. D. Act as expressions of general concepts from which more specific classes can be derived.

14 65. Match the following: 1. Anchor property 2. Dock Property 3. Shared Properties 4. Instance Properties A. When you dock a control to an edge of the form, it stays flush with that edge no matter how the container is resized. B. Lets you anchor a control to one or more of the edges of the form. C. Assigned for each instance of the class. D. Deal with multiple instances of the same class. 66. Match the following: 1. Label Control 2. ProgressBar Control 3. ComboBox Control 4. TreeView Control A. Displays a hierarchical collection of node objects that can consist of text with optional check boxes or icons B. Displays the current progress of an operation to the user C. Displays text that users cannot directly edit D. Displays a drop-down list of items

15 67. Match the following: 1. Enter Event 2. Validating Event 3. Validated Event 4. KeyPress Event A. Occurs after the validation on the control is completed B. Occurs whenever a key is pressed C. Occurs when the control is being validated D. fired when focus is set to a field 68. Match the following: 1. Cascade 2. TileHorizontal 3. TileVertical 4. ArrangeIcons A. All MDI child windows are cascaded within the client region of the MDI parent form. B. All MDI child windows are tiled horizontally within the client region of the MDI parent form. C. All MDI child windows are tiled vertically within the client region of the MDI parent form. D. All MDI child icons are arranged within the client region of the MDI parent form.

16 69. Match the following: 1. System.Data 2. System.Data.OLEDB 3. System.Data.SQLClient 4. System.Data.Common A. Contains classes that are shared by data providers. B. Consists of classes that constitute most of the ADO.NET architecture. C. Contains classes that provide database access using the OLE DB data provider D. Contains classes that provide database access using the SQL Server data provider. 70. Match the following: 1. Interfaces 2. Iunknown 3. Reference Counting 4. Marshaling A. The mechanism that enables objects to be used acorss threads, processes, and network boundaries, allowing for location independence. B. The technique by which an object (Strictly an interface) decides when it is no longer being used and is therefore free to remove itself. C. The basic interface that implements reference counting and interface querying mechanisms running through COM. D. The mechanism through which an object exposes its functionality.

17 71. Match the following definitions of the entities of a.net application: 1. Classes 2. Modules 3. Assemblies 4. Types A. The basic units that encapsulate data and behavior B. The primary unit of deployment of a.net application C. The individual files that contain the IL for an assembly D. The common unit of transmitting data between modules 72. Match the following icons with their descriptions: A. Displays the properties for an object. B. Gives an alphabetical list of all properties and property values arranged by category. C. Displays a Property Page for the property if one is supplied. D. Sorts the properties and events.

18 73. Match the following: 1. Shortcut key for Output Window 2. Shortcut key for Command Window 3. vb_ide_01.sln 4. vb_ide_01.suo A. Ctrl+Alt+A B. A binary file that contains user settings for the solution, such as current breakpoints and open documents. C. Equivalent of the.vbp project file from VB6 and contains all the bookkeeping information needed to compile your solution. D. Ctrl+Alt+O 74. Match the following string functions in VB.NET: 1. Asc 2. Chr 3. Filter 4. Right A. Finds or removes a specified number of characters from the end of a string. B. Converts a number to Unicode. C. Returns the character code corresponding to the first letter in a string. D. Takes a string array and a string to search for, returns a onedimensional array containing all the elements that match the search text.

19 75. The following function accepts an arbitrary number of arguments: Function AddThemUp(ByVal ParamArray stuff() As Double) As Double Dim total As Double = 0 Dim number As Double = 0 Dim I As Integer For I = 0 To UBound(stuff) total = total + stuff(i) Next Return total End Function The function is called by the statement: x = AddThemUp(3, 4, 5, 6). The resulting value of x is. a. 10 b. 18 c. 16 d. 81

20 Answer Keys Part - A Part - B Part - C Q. No. Ans. Key Q. No. Ans. Key Q. No. Ans. Key Q. No. Ans. Key 1 a 21 c 41 b 61 a 2 c 22 c 42 c 62 b 3 b 23 a 43 a 63 c 4 c 24 d 44 b 64 b 5 a 25 a 45 a 65 a 6 d 26 b 46 d 66 b 7 a 27 b 47 a 67 d 8 b 28 b 48 b 68 b 9 d 29 c 49 c 69 c 10 b 30 b 50 d 70 a 11 a 31 b 51 a 71 c 12 c 32 c 52 a 72 b 13 a 33 d 53 c 73 d 14 c 34 b 54 b 74 b 15 a 35 a 55 d 75 b 16 a 36 d 56 b 17 c 37 b 57 a 18 b 38 a 58 c 19 b 39 b 59 c 20 a 40 d 60 a

2. A GUI A. uses buttons, menus, and icons B. should be easy for a user to manipulate C. both (a) and (b) D. stands for Graphic Use Interaction

1. Which language is not a true object-oriented programming language? A. VB 6 B. VB.NET C. JAVA D. C++ 2. A GUI A. uses buttons, menus, and icons B. should be easy for a user to manipulate C. both (a)