Apps Web Exam Questions & Answers 2024/2025
user interface, application, data - ANSWERSBasic web app architecture/skeleton: what are the layers.
$ - ANSWERSSymbol to signify a global variable
@ - ANSWERSSymbol to signify an instance variable
@@ - ANSWERSSymbol to signify a class insta...
user interface, application, data - ANSWERSBasic web app architecture/skeleton: what are the layers.
$ - ANSWERSSymbol to signify a global variable
@ - ANSWERSSymbol to signify an instance variable
@@ - ANSWERSSymbol to signify a class instance variable
#{...} - ANSWERSWhat symbol represents interpolation? E.g. "The sum 6+3 is 9"
0...4 - ANSWERSRange from 0 to 4 that doesn't include 4
self - ANSWERSThe replacement for the keyword "this" in Java
false - ANSWERSTrue or false: 0 can be used to represent a false boolean value
specials - ANSWERSBuilt-in constants similar to environment variables, e.g. __FILE__ = the current source
file name
true - ANSWERSTrue or false: if clauses can be used before or after a code statement.
until - ANSWERSEquivalent keyword to "while not"
unless - ANSWERSEquivalent keyword to "if not"
, ** - ANSWERSHow to raise something to a power
true - ANSWERSTrue or false: integer division always rounds down (towards negative infinity)
<=> - ANSWERSReturns -1 if left term is smaller than the right term, 0 if equal, and 1 if larger than the
right term
.equal? - ANSWERSHow do you check for reference value equality?
== - ANSWERSHow do you check for object value equality?
true - ANSWERSTrue or false:
s1, s2 = "hi", "hi"
is a legal statement in Ruby.
[1, 1] - ANSWERSWhat is the return value for the following statement?
x, y = 1, 1
x = 1, y = 1 - ANSWERSWhat is the result of the following statement?
x, y = 1, 1
single point of control over change - ANSWERSMeaning of SPOCOC
.cover? - ANSWERSRange method that checks if the given value falls between 2 endpoints of the range
(not necessarily exists in the range)
.include? - ANSWERSRange method that checks if the given value exists in the range
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