____________ 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

Computer Science & Information Technology

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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

Computer Science & Information Technology

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).

Computer Science & Information Technology

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

Computer Science & Information Technology

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 return oldItem

A. self.rear -= 1 B. self.front = self.rear C. self.size -= 1 D. self.size += 1

Computer Science & Information Technology