Question 1

The ____________ method removes specified characters from a string.

Accepted Answer

The Remove method is specifically designed to remove characters from a string. The other options (Delete, Extract, TrimEnd) may be used to modify a string, but they are not as precise or efficient as the Remove method for this specific task.

Question 2

A(n) ____________ is an object you can create that contains one or more variables known as fields.

Accepted Answer

A structure is an object that can contain multiple variables known as fields. It is a composite data type that allows you to group related data together. Unlike lists or containers, structures have a specific set of fields that are defined when the structure is created, and each field has a unique name and data type.

Question 3

Before you can use a structure to store data, you must create a(n) ____________ of the structure in memory.

Accepted Answer

The correct term for creating a structure in memory is creating an instance of the structure. An instance is a specific occurrence of a structure that has been created and allocated memory in the program's memory space. Therefore, the correct answer is C) instance. A copy implies that the structure already exists and you are making a duplicate, while identity and field do not accurately describe the process of creating a structure in memory.

Question 4

Look at the following code sample: struct Pet { Public string name; Public int age; Public string type; } List birdList = new List(); Pet parrot = new Pet(); Which one of the following statements adds the Pet structure named parrot to the List object named birdList?

Accepted Answer

The Add method is used to add a new item to the end of the List. In this case, we want to add the Pet structure named parrot to the List object named birdList, so we use birdList.Add(parrot);

Question 5

Before tokenizing a string, you should use the ____________ method to remove leading and/or trailing white-space characters and prevent them from being included in the first and last tokens.

Accepted Answer

The Trim method removes any leading and/or trailing white-space characters from a string. This is useful before tokenizing a string to prevent these unwanted characters from being included in the first and last tokens.

Question 6

In programming terms, ____________ are a series of words or other items of data contained in a string that are separated by spaces, commas, or other characters.

Accepted Answer

Tokens are individual words or items of data contained within a string that are separated by spaces, commas, or other characters. These tokens can be identified and processed by computer programs to perform various tasks.

Question 7

A(n) ____________ is a data type you can create by specifying a set of symbolic names that belong to that data type.

Accepted Answer

Enumerated data types are used to create user-defined data types by specifying a set of named constants belonging to that type. These named constants are typically integers, though they can be represented as characters or other data types. They are also known as enumeration types or enums.

Question 8

Structure objects are normally passed ____________ to a method.

Accepted Answer

Structure objects are normally passed by value to a method, meaning a copy of the object is passed rather than a reference to the original object.

Question 9

Assuming that cat1 and cat2 are both instances of the Pet structure, which one of the following statements copies cat1 to cat2?

Accepted Answer

Option B copies the value of cat1 to cat2, which is what the question is asking for. Option A does the opposite and would overwrite cat1 with the value of cat2. Option C is not a valid syntax and option D would create a new instance of the Pet structure based on cat2, rather than copying the value of cat1 to cat2.

Question 10

In order to compare two structure objects, you must compare the individual ____________ of each object.

Accepted Answer

Structures contain fields, which are the variables that store data specific to that structure. Therefore, in order to compare two structure objects, you must compare the individual fields of each object.

Question 11

Look at the following code sample that creates an array of Pet structure objects: struct Pet
{
Public string name;
Public int age;
Public string type;
}
Const int SIZE = 4;
Pet[] cats = new Pet[SIZE];
Which one of the following statements assigns the string "Pickles" to the name member of cats[2]?

Accepted Answer

The answer of Look at the following code sample that...

Question 12

Look at the following code sample: struct Pet
{
Public string name;
Public int age;
Public string type;
}
Pet hound = new Pet();
Which one of the following statements assigns the string "Beagle" to the hound object's type field?

Accepted Answer

The correct way to access and assign a value to a field of an object is to use the dot notation to specify the object name (in this case, hound) and the field name (type), followed by the assignment operator (=) and the value to be assigned ("Beagle"). Option A is incorrect syntax and does not make sense. Option B is assigning the value directly to the type variable, not to the hound object's type field. Option D is incorrect syntax and does not make sense.

Question 13

The character that separates tokens is known as a(n) ____________.

Accepted Answer

In computer science, the character that separates one token from another in a string or in a language is known as a delimiter. It can be a space, a punctuation mark, a special character, or any other symbol that helps in breaking up the text into manageable sections. A sentinel is a special value or token used to signify the end of a sequence or a data structure. An article is a word that describes a noun, like 'a', 'an', or 'the'. A separator is a general term used to refer to any character or symbol used to separate or mark boundaries between different entities or values.

Question 14

When the data in a spreadsheet is exported using the ____________ file format, each row is written to a line, and the values of the cells are separated by commas.

Accepted Answer

The CSV file format is specifically designed for exporting data from spreadsheets. It separates values in cells with commas and each row is written to a separate line, making it easy to import and use the data in other programs. XML and DOM are not file formats for exporting spreadsheet data, and DSV is not a commonly used term.

Question 15

Look at the following code sample: struct Pet
{
Public string name;
Public int age;
Public string type;
}
Which one of the following statements declares a Pet structure variable named hound and initializes the object's fields with their default values?

Accepted Answer

Option B declares a Pet structure variable named hound and initializes the object's fields with their default values. The keyword "new" is used to create a new instance of the Pet structure and assign it to the hound variable. This will initialize string name to null, integer age to 0, and string type to null. Option A is incorrect as it tries to assign a non-existent hound variable to a new Pet instance. Option C is syntactically incorrect, and option D only declares the variable without initializing it.

Question 16

In C#, string objects have a method named ____________ that is used to tokenize strings.

Accepted Answer

The Split method is used to split a string into an array of substrings based on a specified separator. This is a commonly used method for tokenizing strings in C#.

Question 17

The process of dividing a string into tokens is known as ____________.

Accepted Answer

Tokenizing refers to the process of dividing a string into tokens, which are smaller parts of the string. This is a common operation in programming when processing text data. Parsing may involve tokenizing, but it generally broader in scope as it refers to the process of analyzing a text to determine its structure and meaning. Object splitting and threading are not relevant to this process.

Question 18

Look at the following code sample: enum Flavor { Vanilla, Strawberry, Chocolate }
The identifiers Vanilla, Strawberry, and Chocolate, which appear inside the braces, are known as ____________.

Accepted Answer

The identifiers inside the braces in an enum declaration are known as enumerators. They represent the possible values or options for the enum type.

Question 19

The ____________ method removes all leading and trailing spaces from a string.

Accepted Answer

The correct method to remove all leading and trailing spaces from a string is the "Trim" method. This method is a built-in method in most programming languages and is the most appropriate choice for this task.

Question 20

When the items in two data structures are related by their indexes, it is said that a(n) ____________ exists between the data structures.

Accepted Answer

When items in two data structures are related by their indexes, a parallel relationship exists between them. This means that corresponding elements are connected based on their position within each structure.

Quiz 8: More About Processing Data