____________ are commonly used to control the number of times a loop iterates.
a. Boolean variables
b. Sentinel variables
c. Counter variables
d. Named constants
c. Counter variables
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In order to select all of the fields / columns from a table, use ______ between SELECT and ALL
a) * b) ANY c) ALL d) ALL_COLUMNS e) ALL_DATA
Data items represented in computers form a ________, in which data items become larger and more complex as they progress from bits to fields.
Fill in the blank(s) with the appropriate word(s).
Which of the following consists of electronic components that store instructions waiting to be executed and data needed by those instructions?
A. The processor B. The CPU C. The control unit D. Memory
In the following code for the pop method for a linked queue implementation, what is the missing code?
def pop(self): oldItem = self.front.data self.front = self.front.next if self.front is None: self.rear = None
A. self.rear -= 1 B. self.front = self.rear C. self.size -= 1 D. self.size += 1