Question 1

Using a ____ in your programs refers to the bad programming practice of hardcoding numbers (unnamed, literal constants) in code without explanation.
A) constant
B) token
C) magic number
D) character set

Accepted Answer

The term "magic number" refers to unnamed, hard-coded constants in code without explanation. It is considered a bad practice as it makes the code hard to understand and maintain.

Question 2

The FileStream class has 15 overloaded constructors. What can you tell about the FileStream object named myFile , given the constructor below? 
FileStream myFile = 
new FileStream("SomeText.txt"), FileMode.Create, 
FileAccess.Write);

Accepted Answer

The answer of The FileStream class has 15 overloaded constructors....

Question 3

____ is the process of converting objects into streams of bytes.
A) Deserialization
B) Normalization
C) Streaming
D) Serialization

Accepted Answer

Serialization is the process of converting objects into streams of bytes, which can be transmitted or stored and then deserialized back into objects when needed. Normalization refers to the process of organizing data in a database to minimize redundancy and ensure data consistency, while streaming involves transmitting data continuously in real-time.

Question 4

Write a program that prompts a user for a filename and tests the file's existence. If the file exists, display the file creation time. If it does not exist, display a message.

Accepted Answer

The answer of Write a program that prompts a user...

Question 5

Temporary storage is usually called computer memory or _________________________.

Accepted Answer

The answer of Temporary storage is usually called computer memory...

Question 6

What is a character?

Accepted Answer

The answer of What is a character?...

Question 7

Some files are ____________________ that contain facts and figures, such as a payroll file that contains employee numbers, names, and salaries.

Accepted Answer

The answer of Some files are ____________________ that contain facts...

Question 8

A file's ____ holds the byte number of the next byte to be read.
A) token
B) file position pointer
C) magic number
D) record token

Accepted Answer

The file position pointer (also known as the file pointer or cursor) keeps track of the current position within a file by holding the byte number of the next byte to be read or written. This allows for sequential access to the data within a file.

Question 9

The ____ method is a member of the String class; it takes a character delimiter parameter and separates a string into substrings at each occurrence of the delimiter.
A) Separate()
B) Split()
C) Delimit()
D) Substring()

Accepted Answer

The Split() method is a member of the String class and takes a character delimiter parameter to separate a string into substrings at each occurrence of the delimiter. The other options are not valid methods in the String class.

Question 10

The set of all the characters used to represent data on a particular computer is that computer's ____________________.

Accepted Answer

The answer of The set of all the characters used...

Question 11

A program that reads from a sequential access data file creates a FileStream object, and then the FileStream object is passed to a StreamReader object's constructor. Once this has been done, the ReadLine() method can be used to retrieve one line at a time from the data file. Show the sequence of instructions that would create the FileStream and StreamReader needed to access a data file, and then read one line from the file.

Accepted Answer

The answer of A program that reads from a sequential...

Question 12

When you produce screen output and accept keyboard input, you use the Console class, which provides access to which three standard streams?

Accepted Answer

The answer of When you produce screen output and accept...

Question 13

When you perform an input operation in an application, you can picture bytes flowing into your program from an input device through a ____, which functions as a pipeline or channel.
A) directory
B) stream
C) root
D) path

Accepted Answer

In programming, a stream refers to a sequence of data that is flowing between two points. In this case, the input device is the source of the data and the application is the receiver. Therefore, a stream is the best choice out of the given options.

Question 14

What are the disadvantages to writing data to a text file using tokens and delimiters as opposed to writing an entire object to a file at once?

Accepted Answer

The answer of What are the disadvantages to writing data...

Question 15

Sometimes it is necessary to process a sequential text file multiple times from the beginning during a program's execution. After the file is processed the first time, the file pointer is at the end of the file. How can you reread the file at this point?

Accepted Answer

The answer of Sometimes it is necessary to process a...

Question 16

Describe some of the methods of the Directory class.

Accepted Answer

The answer of Describe some of the methods of the...

Question 17

____ converts streams of bytes back into objects.
A) Deserialization
B) Serialization
C) Normalization
D) Denormalization

Accepted Answer

Serialization is the process of converting objects into streams of bytes, while deserialization is the opposite process, i.e., converting streams of bytes back into objects. Therefore, the correct choice is A) Deserialization. Choices B) Serialization and C) Normalization and D) Denormalization are not relevant to this question.

Question 18

What is a record?

Accepted Answer

The answer of What is a record?...

Question 19

Tossing a file into a drawer of a file cabinet without a folder is the equivalent of placing a file in the main or ____________________ of your storage device when storing computer files.

Accepted Answer

The answer of Tossing a file into a drawer of...

Question 20

Businesses store data in a relationship known as the data ____________________.

Accepted Answer

The answer of Businesses store data in a relationship known...

Quiz 14: Files and Streams

Using a ____ in your programs refers to the bad programming practice of hardcoding numbers (unnamed, literal constants) in code without explanation.

The FileStream class has 15 overloaded constructors. What can you tell about the FileStream object named myFile , given the constructor below? FileStream myFile = new FileStream("SomeText.txt"), FileMode.Create, FileAccess.Write);

____ is the process of converting objects into streams of bytes.