INSY 4305 Final UPDATED ACTUAL Exam Questions and CORRECT Answers

INSY 4305 Final UPDATED ACTUAL
Exam Questions and CORRECT Answers
1. Streams that input bytes from and output bytes to files are known as ________.
a. bit-based streams
b. byte-based streams
c. character-based streams

d. Unicode-based streams - CORRECT ANSWER - b. byte-based streams


2. Which of the following statements is false?
a. A Path represents the location of a file or directory.
b. Path objects open files and provide file-processing capabilities.
c. Class Paths is used to get a Path object representing a file or directory location.
d. The static method get of class Paths converts a String representing a file's or directory's
location into a Path object - CORRECT ANSWER - b. Path objects open files and provide
file-processing capabilities.


3. A(n) ________ path starts from the directory in which the application began executing.
a. absolute
b. relative
c. parallel

d. comparative - CORRECT ANSWER - b. relative


4. Path method ________ returns the String name of a file or directory without any location
information.
a. getStringName
b. getFileOrDirectoryName
c. getDirectoryName

d. getFileName - CORRECT ANSWER - d. getFileName

,5. Files static method ________ receives a Path and returns a boolean indicating whether that
Path represents a directory on disk.
a. isDiskDirectory
b. isDirectory
c. isFileDirectory

d. isPath - CORRECT ANSWER - b. isDirectory


6. What does the following statement do?

Scanner scanner = new Scanner(Paths.get("test.txt")); - CORRECT ANSWER - c. Opens a
text file for input.


7. String objects are immutable. This means they ________. - CORRECT ANSWER - c.
cannot be changed


8. The length of a string can be determined by ________.
a. the String method length()
b. the String instance variable length
c. the String method strlen()

d. All of the above. - CORRECT ANSWER - a. the String method length()


9. The statement
s1.equalsIgnoreCase(s4)
is equivalent to which of the following?
a. s1.regionMatches(true, 0, s4, 0, s4.length());
b. s1.regionMatches(0, s4, 0, s4.length());
c. s1.regionMatches(0, s4, 0, s4.length);

d. s1.regionMatches(true, s4, 0, s4.length); - CORRECT ANSWER - a.
s1.regionMatches(true, 0, s4, 0, s4.length());

, 10. The statement
s1.startsWith("art")
has the same result as which of the following?
a. s1.regionMatches(0, "art", 0, 3);
b. s2 = s1.getChars(0, 3);
s2.equals("art");
c. s1.regionMatches(true, 0, "art", 0, 3);

d. All of the above - CORRECT ANSWER - d. All of the above


11. For
String c = "hello world";
The Java statements
int i = c.indexOf('o');
int j = c.lastIndexOf('l');

will result in: - CORRECT ANSWER - c. i = 4 and j = 9.


12. Given the following declaration:
StringBuilder buf = new StringBuilder();
What is the capacity of buf?
a. 0
b. 10
c. 16

d. 20 - CORRECT ANSWER - c. 16


13. Given the following declarations:
StringBuilder buffer = new StringBuilder("Testing Testing");
buffer.setLength(7);