WGU C949 EXAM ALL QUESTIONS AND CORRECT ANSWERS!!

WGU C949 EXAM ALL QUESTIONS AND
CORRECT ANSWERS!!
Which statement describes a queue data structure?

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.

Which data structure allows inserting and deleting data elements at both the front and the
rear?

Deques

Which data structure allows elements to be inserted and deleted from one end and provides
no direct access to the other end?

Stack

What are the official indexes for the list list01 given this declaration? int[ ] list01 = {0, 2, 4,
6, 8, 10};

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?

List

Which data structure allows insertion and removal from only one end of the data
structure?

Stack

Which data type does the mystery function return?
return_type mystery (int R)
{
int NumUnits = R;return NumUnits * 3.14;
}

,Double

Which category of data does ("FB", 75.00, 75.03, 74.90) represent in the pseudocode?
import datetime
def middle(stock, date):
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))

Tuple

Which value is appropriate for Test1 given the expression?


char Test1;

'L'

Which value is appropriate for the variable middle given the pseudocode?
function mystery()
{
string last;
string first;
char middle;
int phone;
float rate;
}

'D'

Which type of operation is represented in the pseudocode?
int x,y,z;
x=y=z=100;

Assignment

, 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]

Array

Which data type is appropriate for this array to store the given data?
a = ["AF", "71", "BC", "157", "BA", "253"]

String

Which data type is appropriate for the given data set?
a = [1, 717, 23, 12, 314, 6]

Int

Which data type should be used for this object?
days = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
"Saturday"}

String

Which data type should be used for this variable?
phoneNum = "212-555-1212"

String

What is true about garbage collection?

It reclaims memory from data structures implemented using linked allocations.

What is true about a data structure implemented using linked allocation?

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?

90 and 99

What is the effect on the object Computing regarding garbage collection?
Computing obj = new Computing(); obj = null;