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Languages(bus 4406)questions well answered
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Languages(bus 4406)questions well answered
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Languages(bus 4406)questions wellanswered
True/False: Java is an example of a functional programming language - correct answer ✔✔false
which of the following is NOT a characteristic of imperative programming languages?
a) not referentially transparent
b) programming specifies the result not the steps
c) based upon the assignment
d) is dependent on state - correct answer ✔✔programming specifies the result not the steps
True/False: the revolutionary innovation that von Neumann introduced in his computer architecture was
the use of registers within the ALU - correct answer ✔✔false
which of the following NOT an example of an imperative programming language?
a) Cobol
b) Java
c) Prolog
d) Fortran - correct answer ✔✔Prolog
True/False: Programming languages offer abstraction from the details of the computer hardware. This
abstraction resulted in less programming effort but also loss of 'detail' that could potentially result in less
efficient code? - correct answer ✔✔True
True/False: the assembler language was an early step towards abstraction that allowed programmers to
use symbols for machine instructions and not binary numbers? - correct answer ✔✔true
True/False: A bus with less bits has an advantage because it operates faster and can move more data. -
correct answer ✔✔false
,True/False: the development of the C language is associated with the development of the Unix operating
system? - correct answer ✔✔true
What feature of the von Neumann architecture was unique at the time and is an element of virtually
every modern computer today?
Select one:
a. Programs and data are stored in memory to facilitate general purpose computing.
b. The use of a bus to move data between the components of the architecture
c. The use of registers in the arithmetic logic unit
d. The introduction of a control unit - correct answer ✔✔Programs and data are stored in memory to
facilitate general purpose computing.
True/False: in syntactical analysis the top-down approach is referred to LL analysis? - correct answer
✔✔true
which of the following expressions can be evaluated as syntactically correct by the following grammar?
E = N | E "+" E
N = "1" | "2" | "3" | "4" - correct answer ✔✔4 + 2 + 1
True/False: type checking is a part of the compilation process that occurs in step 2 syntax analysis -
correct answer ✔✔false
True/False: Perl is an example of a static typed programming language. - correct answer ✔✔True
True/False: the EBNF approach to grammar specification was a rewrite of the original BNF developed by
John Backus designed to normalize grammar specification? - correct answer ✔✔false
True/False: an array is comprised of a collection of elementary data types which can all be of different
types - correct answer ✔✔false
,True/False: the scope of a variable refers to the domain where a specific binding refers to the same
location in memory - correct answer ✔✔True
Which of the following is NOT one of the attributes of a variable.
a) scope
b) lifetime
c) r-value
d) name
e) all of these choices are attributes of a variable - correct answer ✔✔all of these choices are attributes
of a variable
What is the binary equivalent of decimal 25 in 2's complement? - correct answer ✔✔00011001
Specific data elements in an array are accessed using an:
a) index
b) hash
c) key
d) pointer - correct answer ✔✔index
Consider the following code segment:
for (int k=0; k<20; k=k+2)
{
if (k%3 == 1)
System.out.print(k+" ");
}
What is printed when this code is executed? - correct answer ✔✔4 10 16
The correct looping statement to use when the number of
, iterations is known is:
a. The for loop
b. The while loop
c. The do .. while loop
d. None of these answers - correct answer ✔✔the for loop
True/False: The semantics in which the address of a variable is
bound to the name of the formal parameter variable is known as
copy-in semantics or call-by-value. - correct answer ✔✔False
True/False: Actual parameters can only be specified as variables - correct answer ✔✔False
The following code segment is an example of:
void f() {
... g() ...
}
void g() {
... f() ...
} - correct answer ✔✔an indirect recursive call
True/False: The following segment of JavaScript code is valid.
if (how == "reverse")
{
parent.page1.location.href="page2.html"
}
else
{
parent.page2.location.href="page2.html"
} - correct answer ✔✔False
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