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Cosc 101 final exam review questions and answers
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Cosc 101 final exam review questionsand answers
methods - Answer -contain blocks of executable code
programming language - Answer -tool for solving problems
John Von Neumann - Answer --introduced the concept of stored programs
-wrote a paper discussing storage
Variable - Answer -named storage location that holds a data value
jacquard's loom - Answer -1st programmable device
pseudocode - Answer -design and represent algorithms
if x=0, otherwise... - Answer -conditional statement
"Print n" - Answer -sequential statement
"Repeat the following 5 operations until i<100..." - Answer -iterative loop statement
computer science - Answer -The study of algorithms, taking into consideration their
hardware, linguistics and mathematical realizations to solve a problem.
characteristics of a good algorithm - Answer --elegance
-efficiency
-maintainability
-understandability
-correctness
lossy compression - Answer -compresses data in a way that doesn't guarantee that all
information in original data can be fully/completely restored
lossless compression - Answer -no information is lost in compression & data can be
exactly reproduced
system commands - Answer -user instructions about what the computer should do
Graphical User Interface (GUI) - Answer -Visual interface to the virtual machine
including operating system and system programs and user programs
, Command Line Interface (CLI) - Answer -way of interacting with Operating Systems with
text
control unit - Answer -keeps track of what step a program is at during execution
algorithm - Answer -A step-by-step procedure that contains unambiguous instructions
that when carried out solves a problem correctly and then halts in a finite amount of time
!= - Answer -not equal to
== - Answer -compares two values (equal)
<= - Answer -less than or equal to
>= - Answer -greater than or equal to
Sequential operation - Answer -An algorithmic operation that carries out a single task
and then moves on to the next operation in sequence.
computing agent - Answer -The entity (machine, robot, person, or thing) that executes
the steps of an algorithm.
an algorithm is useless when: - Answer -it takes too long to execute
ENIAC - Answer --1st fully electronic general-purpose programmable computer
-Electronic Numerical Integrator and Computer
output operations - Answer -Send results from the computing agent to the outside world.
control operations - Answer --Conditional and iterative
- Allow us to alter the normal sequential flow of control in an algorithm
loop - Answer -repetition of a block of instructions
An algorithm can fall into an infinite loop when - Answer -the continuation condition of
the loop never becomes false
library - Answer -a collection of useful, prewritten algorithms.
FLOPS (Floating operations per second) - Answer -how speed of computer is measured
Memory Address Register (MAR) - Answer -keeps track of what is free & what is used
Memory Data Register (MDR) - Answer -Keeps track of where programs/OP codes
reside
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