1. CS 101 Test 2 Review

2. 1. An IF function in Excel
has 3 parts: less than, greater than and equal to
has 3 parts: condition, true and false
has 4 parts: conditions, A, B and C
has 2 parts: condition and test

3. 2. A macro is a small program attached to a document
a recording of actions that can be played back later
vulnerable to virus attacks
all of the above

4. 3. A clustered column chart
has a bar for each value charted, with height of bar proportional to the value represented
represents the percentage of a whole that each value is
shows the relationship of one set of values to another set of values

5. 4. A file that is JPEG format
can represent 16 million colors
is good for charts and simple colors
can be compressed a lot if zipped
only works on PC machines

6. 5. A CLI is
An interface where the user must remember the commands and filenames, not friendly
An interface using a pointing device, icons, drop- down menus, a visual metaphor
A part of an OS which handles the memory in the computer
A kind of file format which allows for animation and simple colors

7. 6. An operating system made by Bell Labs, open source, free, stable, is
Windows
Unix
Linux
iOS
Android

8. 7. A lossless compression method would
Be able to reproduce exactly the thing that was compressed (when decompressed)
Be used by zipping programs
Be used by jpegs
Be used by mp3s
A and B

9. 8. DRM Is considered anti-piracy Is an obsolete protocol for email
Is used on most audio files these days
Can be used to record actions for later playback

10. 9. Multitasking Requires more than one CPU
Can only handle 3 tasks at a time
Is a simulation (an illusion) if done on one CPU
Is not available yet, is still under research

11. 10. A macro in Excel will always be in a sheet with
“macro” in the file name
an extension of xlsm
a chart
numbers

12. 11. The GIF format
Is best used to display pictures with a limited selection of colors and straight lines
Was created by IBM
Is a descendent of the PNG format
Can hold more than one frame, so there is a limited form of animation possible
A and D

13. 12. A speaker is an input device an analog to digital converter
a digital to analog converter
able to reproduce sounds precisely as they were originally heard

14. 13. Inserting a row or column into a spreadsheet
has to be done one cell at a time
will change any formulas which exist in the sheet only if they use absolute references
will change a range in a formula if the insertion is inside the range or to the left of or above the formula with the range
is not allowed once data has been entered into the sheet

15. A. A loop / repetition B. A branch / selection C. A module
14. If the rabbit is facing the door rabbit.move (two meters) else rabbit.turntoface(door) This is an example of which control structure?
A. A loop / repetition
B. A branch / selection
C. A module
D. A sequence

16. 15. CPUs understand A. English B. High level languages
C. Machine language
D. pseudocode

17. 16. A syntax error happens when
The program tries to divide by zero
The programmer misspells a keyword in the language
The programmer multiplied by 10 when they mean to multiply by 100
The program tries to open a file that does not exist

18. 17. In Alice, ___ would be a method.
A penguin
Penguin.talk
Penguin.isbelow
A mouse click
None of the above

19. 18. An algorithm is a low-level language translator
a set of instructions to solve a problem
a compiler
something only programmers use

20. 20. In Alice it’s hard to Make a syntax error Use a loop
Erase a statement from a program
Run a program

21. 21. File formats which use lossless compression are: (choose all that are correct)
JPEG
GIF
PNG
MP3
ZIP
WAV