Question 1

The ____ object is used to write text to a text file.​
A)​TextSave
B)​StreamSave
C)​Streamer
D)​StreamWriter

Accepted Answer

StreamWriter is the correct object used to write text to a text file. The other choices (TextSave, StreamSave, Streamer) are not actual objects in C#.

Question 2

The ____method repeatedly divides the search interval of an array in half to reduce searching time dramatically.​
A)​HexSearch
B)​BinarySearch
C)​DecimalSearch
D)​UnarySearch

Accepted Answer

The method described is binary search which is a well-known and efficient algorithm for searching in arrays. Options A, C, and D are not valid search methods.

Question 3

A ____ search of an array starts at the beginning of the array and inspects each element until a match is found.​
A)​sequential
B)​decimal
C)​matching
D)​hexadecimal

Accepted Answer

A sequential search, also known as a linear search, is the simplest searching algorithm and involves inspecting each element in order until a match is found. This algorithm works well for small arrays, but can become inefficient as the size of the array increases.

Question 4

Every application begins executing a project by displaying the object designated as the ____ object.​
A)​Initial
B)​Startup
C)​Primary
D)​Main

Accepted Answer

The designated object that begins executing a project is the startup object.

Question 5

The array ____ procedure is used to organize elements in an array according to their values.​
A)​Organize
B)​Order
C)​Arrange
D)​Sort

Accepted Answer

The correct term for organizing elements in an array according to their values is to "sort" the array. The procedure is called the sorting algorithm. Therefore, the best choice is D, "Sort."

Question 6

The ____ procedure takes a form out of view.​
A)​Remove
B)​Minimize
C)​Hide
D)​Vanish

Accepted Answer

The word "hide" means to conceal or put something out of view, which fits the description of taking a form out of view. The other answer choices ("remove," "minimize," and "vanish") do not necessarily mean the same thing as "hide" in this context.

Question 7

The ____ object is used to access information in a text file.​
A)​Reader
B)​TextReader
C)​Streamer
D)​StreamReader

Accepted Answer

The StreamReader object is the most commonly used object to access information in a text file. The StreamReader provides methods for reading and manipulating the file, and it allows you to read the file line by line or character by character. Choice A, B, and C are not valid types of objects in C#.

Question 8

In applications that include multiple forms,it is best to declare every variable as a ____ variable unless the variable is used in multiple Form objects.​
A)​Private
B)​Hidden
C)​Locked
D)​Unique

Accepted Answer

Declaring a variable as a private variable ensures that it can only be accessed within the scope of the current Form object, and not by any other Form objects. This helps to prevent naming conflicts and ensures better data encapsulation. Using hidden, locked or unique variables are not standard practices for declaring a variable's scope in multiple Forms.

Question 9

Text data can be stored in a(n)____ file.​
A)​sequential
B)​dynamic
C)​archival
D)​encoded

Accepted Answer

Sequential files are the most common type of file used for storing text data. They are easy to read and write to, and the data is stored in a logical order that makes it easy to retrieve and update. Other file types such as dynamic, archival or encoded are not typically used for storing text data.

Question 10

​The ____ method of a StreamReader object should be used to read the next character in a file without changing position in the file.
A)​CheckNext
B)​Peek
C)​PeekNext
D)​TestNext

Accepted Answer

The Peek method of a StreamReader object returns the next character in the file without changing the position in the file. This is useful for looking ahead to see what the next character is before deciding how to read from the file.

Question 11

A ____ form retains the input focus while open so that the user cannot switch between Form objects until the first form is closed.​
A)​modal
B)​modeless
C)​focused
D)​forced

Accepted Answer

A modal form retains the input focus while open, which means it prevents the user from switching to other forms or interacting with the application until the modal form is closed.

Question 12

In Visual Basic,an array can have up to ____ dimensions.​
A)4
B)​16
C)​32
D)​64

Accepted Answer

In Visual Basic, an array can have up to 32 dimensions, allowing for complex data structures and multidimensional data storage.

Question 13

To apply the sort procedure to an array called intAges,use the syntax ____.​
A)​Sort(intAges)
B)​Sort.Array(.intAges)
C)​ArraySort(intAges)
D)​Array.Sort(intAges)

Accepted Answer

The correct syntax for using the sort procedure for an array is Array.Sort(intAges). The method name, "Sort", is followed by the name of the array in parentheses, "intAges". The prefix "Array" is not necessary and neither is the dot notation. Therefore, the best choice is D.

Question 14

The ____ file extension indicates a text file.​
A)​.txt
B)​.tex
C)​.txf
D)​.stf

Accepted Answer

The .txt file extension generally indicates a plain text file.

Question 15

A simple text file is called a ____ file.​
A)​sequential
B)​binary
C)hexadecimal​
D)​unary

Accepted Answer

A simple text file is called a sequential file because data is stored in sequence, one after the other.

Question 16

To store the values contained in a table,you would use a ____ array.​
A)​parallel
B)​grid
C)​two-dimensional
D)​three-dimensional

Accepted Answer

A two-dimensional array is typically used to store the values contained in a table because it allows for the data to be organized into rows and columns, which is the typical layout of a table. A parallel array is used to store related data in separate but parallel arrays. A grid array and a three-dimensional array are not as commonly used for storing table data.

Question 17

A(n)____ form allows users to switch to other forms within the application while it is open.​
A)​modal
B)​modeless
C)​unfocused
D)​forced

Accepted Answer

Modeless forms allow users to switch to other forms within the application while it is open, whereas modal forms require the user to complete a task or dismiss the form before accessing other parts of the application. Unfocused and forced are not appropriate terms in this context.

Question 18

An array with two index values for each element is a(n)____ array.​
A)​multi-index
B)​evaluated
C)​two-dimensional
D)​dynamic

Accepted Answer

A two-dimensional array has two index values for each element, representing its position in rows and columns. This type of array is often used in matrix operations and data tables. The other answer choices (multi-index, evaluated, dynamic) do not accurately describe this type of array.

Question 19

Command lines placed after the ____ method call are not executed until the second Form object is closed.​
A)​ShowModal
B)​ShowDialog
C)​OpenModal
D)​ShowModeless

Accepted Answer

The ShowDialog method displays the form as a modal dialog box, which means that the user must close the form before any other part of the application can continue. Therefore, any command lines placed after the ShowDialog method call will not be executed until the form is closed. This is different from ShowModal or ShowModeless, which do not block the application's execution flow. OpenModal is not a valid method in the context of WinForms or WPF.

Question 20

The BinarySearch procedure returns ____ if the desired value is found in the array.​
A)​the element's value
B)​the matching index value
C)​1
D)​-1

Accepted Answer

The BinarySearch procedure is used to search for a specific value in a sorted array. If the value is found, the procedure returns the matching index value. If the value is not found, the procedure returns -1. Therefore, the best choice for the question is B, as it indicates the matching index value.

Quiz 8: Using Arrays and File Handling

The ____ object is used to write text to a text file.

The ____method repeatedly divides the search interval of an array in half to reduce searching time dramatically.

A ____ search of an array starts at the beginning of the array and inspects each element until a match is found.

Every application begins executing a project by displaying the object designated as the ____ object.

The array ____ procedure is used to organize elements in an array according to their values.

The ____ procedure takes a form out of view.

The ____ object is used to access information in a text file.

In applications that include multiple forms,it is best to declare every variable as a ____ variable unless the variable is used in multiple Form objects.

Text data can be stored in a(n) ____ file.

The ____ method of a StreamReader object should be used to read the next character in a file without changing position in the file.

A ____ form retains the input focus while open so that the user cannot switch between Form objects until the first form is closed.

In Visual Basic,an array can have up to ____ dimensions.

To apply the sort procedure to an array called intAges,use the syntax ____.

The ____ file extension indicates a text file.

A simple text file is called a ____ file.

To store the values contained in a table,you would use a ____ array.

A(n) ____ form allows users to switch to other forms within the application while it is open.

An array with two index values for each element is a(n) ____ array.

Command lines placed after the ____ method call are not executed until the second Form object is closed.

The BinarySearch procedure returns ____ if the desired value is found in the array.

Quiz 8: Using Arrays and File Handling

The ____ object is used to write text to a text file.​

The ____method repeatedly divides the search interval of an array in half to reduce searching time dramatically.​

A ____ search of an array starts at the beginning of the array and inspects each element until a match is found.​

Every application begins executing a project by displaying the object designated as the ____ object.​

The array ____ procedure is used to organize elements in an array according to their values.​

The ____ procedure takes a form out of view.​

The ____ object is used to access information in a text file.​

In applications that include multiple forms,it is best to declare every variable as a ____ variable unless the variable is used in multiple Form objects.​

Text data can be stored in a(n) ____ file.​

​The ____ method of a StreamReader object should be used to read the next character in a file without changing position in the file.

A ____ form retains the input focus while open so that the user cannot switch between Form objects until the first form is closed.​

In Visual Basic,an array can have up to ____ dimensions.​

To apply the sort procedure to an array called intAges,use the syntax ____.​

The ____ file extension indicates a text file.​

A simple text file is called a ____ file.​

To store the values contained in a table,you would use a ____ array.​

A(n) ____ form allows users to switch to other forms within the application while it is open.​

An array with two index values for each element is a(n) ____ array.​

Command lines placed after the ____ method call are not executed until the second Form object is closed.​

The BinarySearch procedure returns ____ if the desired value is found in the array.​