WGU C949 OBJECTIVE ASSESSMENT <\/p>\n\n\n\n
Which statement describes a queue data structure? – ANSWER It is a sequence of elements in which insertions can take place
only at the back end and deletions can take place only at the
front end.
What are the official indexes for the list list01 given this
declaration? int[ ] list01 = {0, 2, 4, 6, 8, 10}; – ANSWER- 0, 1,
2, 3, 4, 5
Which abstract data type (ADT) has elements of the same type
so that the elements can be retrieved based on the index or
position? – ANSWER- List
Which category of data does (“FB”, 75.00, 75.03, 74.90)
represent in the pseudocode?
import datetime
def middle(stock, date):<\/p>\n\n\n\n
symbol, current, high, low = stock
return (((high + low) \/ 2), date)
mid_value, date = middle((“FB”, 75.00, 75.03, 74.90),
datetime.date(2014, 10, 31)) – ANSWER- Tuple
Which data type does the mystery function return?
return_type mystery (int R)
{
int NumUnits = R;return NumUnits * 3.14;
} – ANSWER- Double
Which value is appropriate for the variable middle given the
pseudocode?
function mystery()
{
string last;
string first;
char middle;
int phone;
float rate;<\/p>\n\n\n\n
} – ANSWER- ‘D’
What is the most efficient data type to use for this data set of a
fixed size in Java?
a = [0, 0, 1, 4, 7, 16, 31, 64, 127] – ANSWER- Array
What is true about garbage collection? – ANSWER- It reclaims
memory from data structures implemented using linked
allocations.
What is true about a data structure implemented using linked
allocation? – ANSWER- Storage is allocated using pointers to
new locations as needed.
What are the array elements corresponding to the mid-values in
the first and second iterations of a binary search in an array arr =
{45, 77, 89, 90, 94, 99, 100} and key = 100? – ANSWER- 90
and 99
What is the effect on the object Computing regarding garbage
collection?
Computing obj = new Computing(); obj = null; – ANSWER- It
is automatically available for garbage collection.<\/p>\n\n\n\n
What are the mid-values in the first and second levels of
recursion in this binary search?
int arr = {46, 76, 89, 90, 94, 99, 100} and key = 99 – ANSWER\u000290 and 99
Which data set is represented using the dictionary data type? –
ANSWER- A set of students and their test scores
What is a characteristic of keys in an associative dictionary data
type? – ANSWER- They are unique and immutable.
Which method can be used to take a value out of a dictionary? –
ANSWER- D1[key].remove(value)
Given this data dictionary in Python:
dict = {‘white’:0x0000, ‘black’:0x1111}
Which command\/function generates the output [‘white’,’black’]?<\/p>\n\n\n\n