Programming for Business Applications
Test Preparation
Course Introduction
Programming for Business Applications introduces students to the fundamental concepts and practical skills required to develop software solutions tailored to business needs. The course covers essential programming languages and tools commonly used in the business environment, with an emphasis on automating processes, managing data, and solving problems specific to operations, finance, marketing, and human resources. Through hands-on projects and real-world case studies, students learn how to design, develop, test, and implement applications that enhance organizational efficiency and decision-making. No prior programming experience is required, making this course ideal for those seeking to bridge the gap between business knowledge and technical capability.
Recommended Textbook
Visual C# How to Program 6th Edition by Paul J. Deitel
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Chapter 1: Introduction to Computers, the Internet and Visual C#
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Sample Questions
Q1) In the mid-1980s,Microsoft developed the ________ operating system based on a graphical user interface with buttons,textboxes,menus and other graphical elements.
A) Unix
B) Macintosh
C) Linux
D) Windows
Answer: D
Q2) In a ____________ file,a record typically stored in order by a record-key field.
A)chronological
B)non-sequential
C)sequential
D)record-key
Answer: C
Q3) The cost of computing power and communications bandwidth has been A) about the same each year.
B) going up.
C) going down.
D) undetermined.
Answer: C
Page 3
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Chapter 2: Dive Into Visual Studio Community
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Sample Questions
Q1) The purpose of the Visual Studio Community is to
A) create a program.
B) run a program.
C) debug a program.
D) All of the above.
Answer: D
Q2) Autohide enables the tool box to shrink down to the edge of the screen.
A)True
B)False
Answer: True
Q3) You cannot browse the web from within the Visual Studio Community environment.
A)True
B)False
Answer: False
Q4) The text in the form's title bar is determined by the form's Text property.
A)True
B)False
Answer: True
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Chapter 3: Introduction to C# Apps
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Sample Questions
Q1) Arithmetic expressions in C# must be written in straight-line form.
A)True
B)False
Answer: True
Q2) A variable is:
A) an instruction for the compiler
B) a location in memory where a value can be stored
C) a description of a value (such as a number or character)
D) None of the above.
Answer: B
Q3) What does the following statement display Console.WriteLine(
$"{"Welcome to "}\n{"C# Programming!"}");
A) Welcome to C# Programming!
B) Welcome to C# Programming!
C) {"Welcome to "} {"C# Programming!"}
D) None of the above
Answer: A
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Page 5
Chapter 4: Introduction to Classes,Objects,Methods and Strings
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Sample Questions
Q1) Which of the following statements is false
A) Normally, a class also contains methods and properties. These manipulate the instance variables belonging to particular objects of the class.
B) Instance variables are declared inside the bodies of the class's methods and properties.
C) Clients of a class cannot access the class's private instance variables.
D) Clients of a class can access the class's public methods.
Q2) Which of the following statements is false
A) Each class you declare must provide a constructor with parameters that can be used to initialize an object when it's created.
B) C# requires a constructor call for every object that's created, so this is the ideal point to initialize an object's instance variables.
C) A constructor's identifier must be the class's name.
D) When you declare a class, you can provide your own constructor to specify custom initialization for objects of your class.
Q3) Attempting to use an uninitialized local variable is a runtime error.
A)True
B)False
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Chapter 5: Control Statements: Part 1
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Sample Questions
Q1) A can be used in a repetition structure to control the number of times a set of statements will execute.
A) declaration
B) counter
C) controller
D) None of the above.
Q2) When instance variables of the simple types are declared in a class,they're automatically assigned default values unless specified otherwise by the programmer.Variables of type bool and String are given null by default;everything else is assigned 0.
A)True
B)False
Q3) A decision symbol in an activity diagram takes the shape of a ________.
A) diamond
B) rectangle
C) circle
D) question mark
Q4) A flag value should not be a legitimate data entry value.
A)True
B)False
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Chapter 6: Control Statements: Part 2
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Sample Questions
Q1) The effects of break and continue statements can be achieved by struc tured programming techniques.
A)True
B)False
Q2) Consider the following two C# code segments: Segment 1 Segment 2
Int i = 0; For (int i=0;i < = 20;++i) While (i < 20) { { Console.WriteLine (i); ++i; } Console.WriteLine (i); }
Which of the following statements is true
A) The output from these segments is not the same.
B) The scope of the control variable i is different for the two segments.
C) Both (a) and (b) are true.
D) Neither (a) nor (b) is true.
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Chapter 7: Methods: a Deeper Look
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Sample Questions
Q1) What does the Framework Class Library hold
A)namespaces
B) classes
C) methods
D) All of the above.
Q2) When calling a method,you must specify the arguments in the same order that the corresponding parameters are declared in the method's parameter list.
A)True
B)False
Q3) An overloaded method is one that
A) has a different name than another method, but the same parameters.
B) has the same name as another method, but different parameters.
C) has the same name and parameters as a method defined in another class.
D) has the same name and parameters, but a different return type than another method.
Q4) A particular seed value passed to the Random class's constructor causes the Random object to always produce the same series of random numbers.
A)True
B)False
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Chapter 8: Arrays;Introduction to Exception Handling
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90 Verified Questions
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Sample Questions
Q1) Rectangular arrays are often used to represent tables of values consisting of information arranged in:
A) rows
B) columns
C) both a and b
D) None of the above
Q2) By convention,the first set of brackets of a two-dimensional array identifies an element's column and the second identifies the row.
A)True
B)False
Q3) Passing a reference type by value is done to protect:
A) the original object from being modified
B) the reference itself from being modified
C) data outside the bounds of an array
D) All of the above.
Q4) Values in an array can be totaled by using the ArrayTotal method.
A)True
B)False
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Chapter 9: Introduction to Linq and Generic Collections
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Sample Questions
Q1) A LINQ query is executed when it's created.
A)True
B)False
Q2) The objects returned when using multiple properties in a select clause are objects of an anonymous type.
A)True
B)False
Q3) The range variable is implicitly defined in the _____ clause and used to produce results in the ______ clause
A) where, put B) from, put C) from, select D) where, select E) in, foreach
Q4) Visual C# requires you to write SQL to query data sources.
A)True
B)False
Q5) A List< T > can automatically resize itself to accommodate additional elements. A)True
B)False
11
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Chapter 10: Classes and Objects: A Deeper Look
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Sample Questions
Q1) Which of the following is false
A) A static method or property must be used to access private static instance variables.
B) A static method has no this reference.
C) A static method can be accessed even when no objects of its class have been instantiated.
D) A static method can call instance methods directly.
Q2) User-defined classes may be composed of other user-defined classes.
A)True
B)False
Q3) Each object of a class has its own copy of all the instance variables of the class. A)True B)False
Q4) An object of a class that has a reference to another object of the same class may access all the private data and methods of that class.
A)True B)False
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Page 12
Chapter 11: Object-Oriented Programming: Inheritance
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Sample Questions
Q1) Which of the following pairs demonstrates the is-a relationship between the first and the second terms
A) car, engine
B) book, table of contents
C) baseball, sport
D) None of the above
Q2) A derived class is often larger and more general than its base class.
A)True
B)False
Q3) Constructors are not inherited.
A)True
B)False
Q4) A derived class can effect state changes in base class private members only through public,protected,internal methods provided in the base class and inher ited into the derived class.
A)True
B)False
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Chapter 12: Object-Oriented Programming: Polymorphism
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Sample Questions
Q1) Which is used to specify that a class will be implementing an interface
A) using
B) :
C) implements
D) extends
Q2) An abstract base class can be used to declare references.
A)True
B)False
Q3) Abstract classes can provide data and services for objects.
A)True
B)False
Q4) Declaring a method sealed means:
A) it will prepare the object for garbage collection
B) it cannot be accessed from outside its class
C) it cannot be overloaded
D) it cannot be overridden
Q5) All methods in an abstract class are inherently abstract. A)True B)False
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Chapter 13: Exception Handling: A Deeper Look
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Sample Questions
Q1) After a finally block has finished executing:
A)control proceeds to the first statement after the finally block.
B)control returns to the throw point.
C)the app exits.
D)control proceeds to the first statement after the last catch block.
Q2) The base class for all exception classes is System.Exception.
A)True
B)False
Q3) After the last catch block,the required finally block provides code that always executes regardless of whether or not an exception occurs.
A)True
B)False
Q4) C# throws an IntegerArithmeticException when division by zero in integer arithmetic occurs.
A)True
B)False
Q5) There must be a catch clause for every expected exception type.
A)True
B)False
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Chapter 14: GUI With Windows Forms: Part 1
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Sample Questions
Q1) Only one RadioButton can be checked per form on the screen.
A)True
B)False
Q2) A GUI allows the user to interact with the program visually.
A)True
B)False
Q3) MouseUp and MouseDown events are used when the mouse moves up or down.
A)True
B)False
Q4) The Clicks property of class MouseEventArgs is used to determine the number of times a Button was clicked.
A)True
B)False
Q5) Event handlers are methods that process events and perform tasks based on those events.
A)True
B)False
Q6) A Label allows input to be typed into it.
A)True
B)False
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Chapter 15: GUI With Windows Forms: Part 2
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Sample Questions
Q1) A tree is a hierarchical collection of child and parent nodes.
A)True
B)False
Q2) The GetDirectories method of class Directory will return an array of sub-directories of the given directory.
A)True
B)False
Q3) The MdiChildren property returns a list of all the created children as an array of Forms.
A)True
B)False
Q4) To set an underline shortcut in a Menu,you use the tilde key (~).
A)True
B)False
Q5) Menus group similar commands and prevent GUI clutter.
A)True
B)False
Q6) The only controls available are the ones provided in C#.
A)True
B)False
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Chapter 16: Strings,Characters and Regular Expressions
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Sample Questions
Q1) An example of a struct is:
A) an int
B) a double
C) a char
D) a byte
E) All of the above
Q2) The method IsWhiteSpace is used to determine whether a character is a space or not.
A)True
B)False
Q3) The ToString method can be used to convert a StringBuilder into a string.
A)True
B)False
Q4) When a number is passed as an argument for a string indexer it returns that many characters starting from the first.
A)True
B)False
Q5) Method Append can be used only on the primitive data types.
A)True
B)False
18
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Chapter 17: Files and Streams
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Sample Questions
Q1) The FileAccess.Read enumeration member is used if the file should not be modified.
A)True
B)False
Q2) What exception is thrown when an error occurs during serialization or deserialization
A) SerialException
B) DeserialException
C) SerializationException
D) DeserializationException
E) c and d, respectively
Q3) BinaryFormatter's Serialize and Deserialize methods are both parameterless.
A)True
B)False
Q4) The Console.Error property returns:
A) a standard error stream object
B) a new error
C) an object of type error
D) None of the above
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Chapter 18: Searching and Sorting
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Sample Questions
Q1) The selection sort is a simple and efficient algorithm.
A)True
B)False
Q2) Searching data involves determining whether a search key is present in the data and,if so,finding its location.
A)True
B)False
Q3) How much faster is the insertion sort with a 15-element array than with a 60-element array
A) 60 times
B) 4 times
C) 15 times
D) 16 times
Q4) After the ith iteration of an ascending order selection sort,the smallest i items of the array will be sorted in increasing order in the first i elements of the array.
A)True
B)False
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Chapter 19: Data Structures
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Sample Questions
Q1) Which statement about trees is false
A) A tree is a nonlinear, two-dimensional data structure.
B) Each node in a tree must contain two links.
C) Children of the same node are called siblings.
D) A node with no children is called a leaf node.
Q2) Which statement is false
A) When a method call is made, the called method must know how to return to its caller, so the return address is pushed onto the program execution stack.
B) Stacks support recursive method calls in the same manner as conventional, nonrecursive method calls.
C) The program execution stack contains the space created for a method's global variables on each invocation of that method during a program's execution.
D) When a method returns to its caller, the memory for that method's local variables is popped off the stack and those variables are no longer known to the program.
Q3) Unboxing can be either implicit or explicit.
A)True
B)False
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Chapter 20: Generics
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Sample Questions
Q1) Generic methods are often used to perform similar operations on different types of data.
A)True
B)False
Q2) The ________ clause specifies the type constraint for type parameter T. A) when
B) constraint C) where
D) cnstr
Q3) You can use explicit type arguments to indicate the exact type that should be used to call a generic method (e.g.,< int >).
A)True
B)False
Q4) IComparable objects cannot,by default,be used with generic code.
A)True
B)False
Q5) Type constraints restrict the type of the argument supplied to a particular type parameter.
A)True
B)False
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Chapter 21: Collections
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Sample Questions
Q1) Which of the following statements is false
A) The LinkedList class is a singly linked list.
B) The LinkedList class's enumerator loops over the values of the nodes, not the nodes themselves.
C) One LinkedListNode cannot be a member of more than one LinkedList.
D) Method Find performs a linear search on the list and returns the first node that contains a value equal to the passed argument.
Q2) Which of the following statements is false
A) You filter elements to produce a collection of results that match a condition-known as a predicate.
B) LINQ extension method Where receives as its argument a Func delegate for a method that receives one argument and returns a bool indicating whether a given element should be included in the collection returned by Where.
C) The OrderBy extension method receives as its argument a Func delegate representing a method that receives one parameter (an element in the collection) and returns a value that's used to order the results.
D) Calls to Where and OrderBy are tuned to execute immediately at high performance.
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Chapter 22: Databases and LING
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Sample Questions
Q1) There is a ____________ relationship between a primary key and its corresponding foreign key.
A) one-to-one
B) foreign
C) one-to-many
D) structural
Q2) A primary key field can be duplicated in other records of the same relational database table,making it easier to manipulate.
A)True
B)False
Q3) A relational database model allows relationships between data to be considered without concern for the ________.
A) meaning of the data
B) structure of the data
C) application of the data
D) All of the above
Q4) DBExtensions method Load loads an entire database's data into a DbContext.
A)True
B)False
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Chapter 23: Asynchronous Programming With Async and Await
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Sample Questions
Q1) An async method can perform other statements between those that launch an asynchronous Task and await the Task's results.In such as case,the method continues executing those statements after launching the asynchronous Task until it reaches
A) the await expression
B) the return statement
C) the Task return
D) the async return
Q2) A Task promises to ________.
A) behave itself
B) run to completion
C) create multiple threads
D) return a result at some point in the future
Q3) The _________ delegate represents any method that takes no arguments and returns a result.
A) Func< TResult >
B) async
C) task
D) TResult
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Chapter 24: XML
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Sample Questions
Q1) To eliminate the need to precede each element with a namespace prefix,document authors can specify a xe "default namespace"default namespace.
A)True
B)False
Q2) The Descendants method of class XContainer returns the same results as the Nodes method.
A)True
B)False
Q3) XML is most commonly used to:
A) communicate with wireless devices
B) store and format data for exchange between apps
C) display information on the Internet
D) validate HTML files.
Q4) XML namespaces help avoid naming collisions between XML documents.
A)True
B)False
Q5) Extensible Stylesheet Language (XSL)is an XML vocabulary for format ting XHTML data
A)True
B)False
26
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Chapter 25: GUI With Windows Presentation Foundation
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Sample Questions
Q1) The StartupUri attribute defines which XAML document loads first.
A)True
B)False
Q2) It's a good practice to use ranges for the size and relative location for the position of WPF controls.
A)True
B)False
Q3) A CollectionViewSource provides multiple "views" of the same data.
A)True
B)False
Q4) A StackPanel has a vertical or horizontal flow,set by its _____ attribute.
A) Order
B) Orientation
C) FlowType
D) Direction
Q5) The attribute declares the control modified by a control template.
A) Type
B) TargetType
C) TargetControl
D) Control
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