Question 1

What file access method can be used to read a single line of input and return the line as a string, including the newline character?

Accepted Answer

A)   getline
B)   readline
C)   fetch
D)   readE) B) and C)
F) A) and C) B

Question 2

The two digits in the base two number system are 0 and 1.

Accepted Answer

A) True 
 B)False

Question 3

A module behaves like a function, but has a slightly different syntax.

Accepted Answer

A) True 
 B)False

Question 4

The encryption method that replaces a character in a text with another character some given distance away in the alphabet from the original is known as what type of cipher?

Accepted Answer

A)   Alpha cipher
B)   Caesar cipher
C)   Jumble cipher
D)   Alternate cipherE) A) and B)
F) B) and C)

Question 5

Data can be output to a text file using a(n) output object.

Accepted Answer

A) True 
 B)False

Question 6

The decimal number system, which utilizes the numbers 0-9, is also known as what number system?

Accepted Answer

A)   The base-9 numbering system.
B)   The base-10 numbering system.
C)   The Octal numbering system.
D)   The hexadecimal numbering system.E) All of the above
F) A) and B)

Question 7

Many applications now use data mangling to protect information transmitted on networks.

Accepted Answer

A) True 
 B)False

Question 8

The string method isalphabetic returns True if the string contains only letters or False otherwise.

Accepted Answer

A) True 
 B)False

Question 9

Your script is parsing filenames and is creating a count of how many files per file extension type exist within a directory. What slice could you use to extract the file extension substring, assuming the extensions are three letters only?

Accepted Answer

A)   filename[-3:]
B)   filename[-3]
C)   filename[:-3]
D)   filename[$-3]E) B) and C)
F) C) and D)

Question 10

When you launch Python, what file system path does it start with?

Accepted Answer

A)   The root directory of the file system.
B)   The current working directory.
C)   The same folder as the Python executable file.
D)   The user's home folder.E) B) and C)
F) B) and D)

Question 11

What specific Python module can you use to determine the file size in bytes of a given file?

Accepted Answer

A)   os.stat
B)   io.file
C)   os.path
D)   file.opsE) A) and B)
F) C) and D)

Question 12

What does a block cipher utilize in order to change plaintext characters into two or more encrypted characters?

Accepted Answer

A)   A mathematical structure known as an invertible matrix.
B)   A random noise sampling from the computer's hardware.
C)   A pseudorandom number generator defined by the encrypting language.
D)   A hardware encryption chip designed to perform obfuscation.E) B) and C)
F) A) and D)

Question 13

A data structure is a compound unit that consists of several smaller pieces of data.

Accepted Answer

A) True 
 B)False  True

Question 14

You are running a Python script that is supposed to write data to an open file, but discover that the file contents are being erased each time the script runs. What is most likely the issue?

Accepted Answer

A)   The file was opened using a mode string other than 'a'.
B)   The file is truncated by default with the write()  method.
C)   The file is erased when the script uses the close()  method.
D)   The file must be opened using a mode string of 'rw'.E) None of the above
F) B) and C)

Question 15

The remove file system function is included in the os.path module.

Accepted Answer

A) True 
 B)False

Question 16

What does a mode string of 'r' indicate when opening a file in Python?

Accepted Answer

A)   The file will be opened for random access.
B)   The file will be opened for read access.
C)   The file will be opened for write access.
D)   The file will be opened in binary mode.E) A) and D)
F) A) and C)

Question 17

The decimal number system is also called the base ten number system.

Accepted Answer

A) True 
 B)False

Question 18

A method is always called with a given data value called an object, which is placed before the method name in the call.

Accepted Answer

A) True 
 B)False

Question 19

The absolute value of a digit is determined by raising the base of the system to the power specified by the position (baseposition).

Accepted Answer

A) True 
 B)False

Question 20

In the binary number system, each digit or bit has a positional value that is a power of what?

Accepted Answer

A)   1
B)   2
C)   8
D)   16E) None of the above
F) B) and D) B

Exam 4: Strings and Text Files

What file access method can be used to read a single line of input and return the line as a string, including the newline character?

Correct AnswerverifiedB

The two digits in the base two number system are 0 and 1.

Correct AnswerverifiedShow Answer

A module behaves like a function, but has a slightly different syntax.

Correct AnswerverifiedShow Answer

The encryption method that replaces a character in a text with another character some given distance away in the alphabet from the original is known as what type of cipher?

Correct AnswerverifiedShow Answer

Data can be output to a text file using a(n) output object.

Correct AnswerverifiedShow Answer

The decimal number system, which utilizes the numbers 0-9, is also known as what number system?

Correct AnswerverifiedShow Answer

Many applications now use data mangling to protect information transmitted on networks.

Correct AnswerverifiedShow Answer

The string method isalphabetic returns True if the string contains only letters or False otherwise.

Correct AnswerverifiedShow Answer

Your script is parsing filenames and is creating a count of how many files per file extension type exist within a directory. What slice could you use to extract the file extension substring, assuming the extensions are three letters only?

Correct AnswerverifiedShow Answer

When you launch Python, what file system path does it start with?

Correct AnswerverifiedShow Answer

What specific Python module can you use to determine the file size in bytes of a given file?

Correct AnswerverifiedShow Answer

What does a block cipher utilize in order to change plaintext characters into two or more encrypted characters?

Correct AnswerverifiedShow Answer

A data structure is a compound unit that consists of several smaller pieces of data.

Correct AnswerverifiedTrue

You are running a Python script that is supposed to write data to an open file, but discover that the file contents are being erased each time the script runs. What is most likely the issue?

Correct AnswerverifiedShow Answer

The remove file system function is included in the os.path module.

Correct AnswerverifiedShow Answer

What does a mode string of 'r' indicate when opening a file in Python?

Correct AnswerverifiedShow Answer

The decimal number system is also called the base ten number system.

Correct AnswerverifiedShow Answer

A method is always called with a given data value called an object, which is placed before the method name in the call.

Correct AnswerverifiedShow Answer

The absolute value of a digit is determined by raising the base of the system to the power specified by the position (baseposition).

Correct AnswerverifiedShow Answer

In the binary number system, each digit or bit has a positional value that is a power of what?

Correct AnswerverifiedB

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B