Question 1

When you copy data from a file on a storage device into RAM, what are you doing?

Accepted Answer

A)  You are writing to the file. 
B)  You are reading from the file. 
C)  You are copying to the file. 
D)  You are flashing the data to memory. 
A)  You are writing to the file. 
B)  You are reading from the file. 
C)  You are copying to the file. 
D)  You are flashing the data to memory. B

Question 2

Hardcoding numbers (unnamed, literal constants) in code without explanation is a bad programming practice.What are these hardcoded numbers known as?

Accepted Answer

A)  constant issues 
B)  token numbers 
C)  magic numbers 
D)  character sets 
A)  constant issues 
B)  token numbers 
C)  magic numbers 
D)  character sets C

Question 3

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

A program that reads from a sequential access data file contains many similar components to one that writes to a file.For example, a FileStream object is created, as in a program that writes to a file.However, the access must be FileAccess.Read (or ReadWrite), as in the following statement:
FileStream inFile =
new FileStream(FILENAME, FileMode.Open, FileAccess.Read);
Then, as when data is being written, the FileStream object is passed to a StreamReader object's constructor, as in the following statement:
StreamReader reader = new StreamReader(inFile);
After the StreamReader has been defined, the ReadLine() method can be used to retrieve one line at a time from the data file.For example, the following statement gets one line of data from the file and stores it in a string named recordIn:
string recordIn = reader.ReadLine();

Question 4

What is the process of converting objects into streams of bytes known as?

Accepted Answer

A)  deserialization 
B)  normalization 
C)  streaming 
D)  serialization 
A)  deserialization 
B)  normalization 
C)  streaming 
D)  serialization

Question 5

A data file is what type of file when each record is read in order of its position in the file?

Accepted Answer

A)  sequential access file 
B)  random access file 
C)  dynamic read file 
D)  temporary buffer file 
A)  sequential access file 
B)  random access file 
C)  dynamic read file 
D)  temporary buffer file

Question 6

If you attempt to open a file with the Open file mode, what happens if the file does not exist?

Accepted Answer

A)  The file is created and then opened for use. 
B)  The program returns a prompt to the user asking if the file should be created. 
C)  The program will return a null object, and all data written to the file will be discarded. 
D)  The program throws a System.IO.FileNotFoundException error. 
A)  The file is created and then opened for use. 
B)  The program returns a prompt to the user asking if the file should be created. 
C)  The program will return a null object, and all data written to the file will be discarded. 
D)  The program throws a System.IO.FileNotFoundException error.

Question 7

What format is used by files that store music or images?

Accepted Answer

A)  data 
B)  binary 
C)  text 
D)  information 
A)  data 
B)  binary 
C)  text 
D)  information

Question 8

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

In this example, the filename is "SomeTe

Question 9

What must be done in order to convert streams of bytes back into objects?

Accepted Answer

A)  deserialization 
B)  serialization 
C)  normalization 
D)  denormalization 
A)  deserialization 
B)  serialization 
C)  normalization 
D)  denormalization

Question 10

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

Writing to a text file allows you to sto

Question 11

What is a character?

Accepted Answer

A character is any one of the letters, n

Question 12

Most computer users organize their files into directories, which are also known by what term?

Accepted Answer

A)  folders 
B)  bins 
C)  buckets 
D)  drawers 
A)  folders 
B)  bins 
C)  buckets 
D)  drawers

Question 13

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

Accepted Answer

* Console.In refers to the standard inpu

Question 14

When you perform an input operation in an application, the bytes flowing into your program from an input device typically are pictured by programmers as what?

Accepted Answer

A)  A directory filling and emptying. 
B)  A stream of information. 
C)  A bucket filling with water. 
D)  A chunk of information. 
A)  A directory filling and emptying. 
B)  A stream of information. 
C)  A bucket filling with water. 
D)  A chunk of information.

Question 15

Approximately how many bytes are in a gigabyte?

Accepted Answer

A)  a thousand bytes 
B)  a million bytes 
C)  a billion bytes 
D)  a trillion bytes 
A)  a thousand bytes 
B)  a million bytes 
C)  a billion bytes 
D)  a trillion bytes

Question 16

Permanent storage that does not lose contents when a computer loses power is known as what type of storage?

Accepted Answer

A)  volatile 
B)  temporal 
C)  nonvolatile 
D)  soft storage 
A)  volatile 
B)  temporal 
C)  nonvolatile 
D)  soft storage

Question 17

What file mode is used to open an existing file, and empty the file once opened so that the file is zero bytes in size?

Accepted Answer

A)  Append 
B)  Empty 
C)  Truncate 
D)  Destroy 
A)  Append 
B)  Empty 
C)  Truncate 
D)  Destroy

Question 18

Due to the fact that data can be erased from files, what term do programmers generally prefer over permanent storage?

Accepted Answer

A)  volatile storage 
B)  temporary storage 
C)  transit storage 
D)  persistent storage 
A)  volatile storage 
B)  temporary storage 
C)  transit storage 
D)  persistent storage

Question 19

What term describes any one of the letters, numbers, or other special symbols (such as punctuation marks) that comprise data.

Accepted Answer

A)  field 
B)  record 
C)  delimiter 
D)  character 
A)  field 
B)  record 
C)  delimiter 
D)  character

Question 20

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

After the file is processed the first ti

When you copy data from a file on a storage device into RAM, what are you doing?

Hardcoding numbers (unnamed, literal constants) in code without explanation is a bad programming practice.What are these hardcoded numbers known as?

What is the process of converting objects into streams of bytes known as?

A data file is what type of file when each record is read in order of its position in the file?

If you attempt to open a file with the Open file mode, what happens if the file does not exist?

What format is used by files that store music or images?

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);

What must be done in order to convert streams of bytes back into objects?

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?

What is a character?

Most computer users organize their files into directories, which are also known by what term?

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

When you perform an input operation in an application, the bytes flowing into your program from an input device typically are pictured by programmers as what?

Approximately how many bytes are in a gigabyte?

Permanent storage that does not lose contents when a computer loses power is known as what type of storage?

What file mode is used to open an existing file, and empty the file once opened so that the file is zero bytes in size?

Due to the fact that data can be erased from files, what term do programmers generally prefer over permanent storage?

What term describes any one of the letters, numbers, or other special symbols (such as punctuation marks) that comprise data.

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?

A First Program Using C#

Using Data

Using Gui Objects and the Visual Studio Ide

Looping

Using Arrays

Using Methods

Advanced Method Concepts

Using Classes and Objects

Introduction to Inheritance

Exception Handling

Using Controls

Handling Events

Making Decisions

Filters

Exam 14: Files and Streams

When you copy data from a file on a storage device into RAM, what are you doing?

Hardcoding numbers (unnamed, literal constants) in code without explanation is a bad programming practice.What are these hardcoded numbers known as?

What is the process of converting objects into streams of bytes known as?

A data file is what type of file when each record is read in order of its position in the file?

If you attempt to open a file with the Open file mode, what happens if the file does not exist?

What format is used by files that store music or images?

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);

What must be done in order to convert streams of bytes back into objects?

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?

What is a character?

Most computer users organize their files into directories, which are also known by what term?

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

When you perform an input operation in an application, the bytes flowing into your program from an input device typically are pictured by programmers as what?

Approximately how many bytes are in a gigabyte?

Permanent storage that does not lose contents when a computer loses power is known as what type of storage?

What file mode is used to open an existing file, and empty the file once opened so that the file is zero bytes in size?

Due to the fact that data can be erased from files, what term do programmers generally prefer over permanent storage?

What term describes any one of the letters, numbers, or other special symbols (such as punctuation marks) that comprise data.

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?

A First Program Using C#

Using Data

Using Gui Objects and the Visual Studio Ide

Looping

Using Arrays

Using Methods

Advanced Method Concepts

Using Classes and Objects

Introduction to Inheritance

Exception Handling

Using Controls

Handling Events

Making Decisions

Filters