, NOCTI CAD REVIEW EXAM QUESTIONS AND CORRECT
ANSWERS 2024/2025 GRADED A+.
1. Operating System: the software that supports a computer's basic functions
2. Orthographic Projection: Front, back, top, bottom, left, and right
3. CPU: Central Processing Unit/Microprocessor (brain of computer)
4. ROM: Read Only Memory
5. RAM: Random Access Memory
6. GUI: Graphic Access Memory
7. CAD: Computer Aided Design
8. CAM: Computer Aided Manufacturing/Machining
9. CNC: Computer Numerical Control/Code
10. Input: sends code to a device
ex: mouse, keyboard
11. Output: Processor of code
ex: screen, printer
12. LCD/LED: Liquid Crystal Display/Light Emitting Diode
13. FAO/FAQ: Finished All Over/Frequently Asked Questions
14. NPT: National Pipped Thread-National Pipped Taper
15. Circular Runout: One point on a shaft that has a tolerance
16. Angularity: Describes the specific orientation of one feature to another at a
referenced angle
17. Offset Section: A section that cuts and goes thru multiple features of an object
18. Half Section: Takes out a quarter of an object
19. BAK: AutoCAD Backup File
20. DWG: AutoCAD Drawing File
21. PDF: Portable Drawing File
22. Pixel: A dot on the screen or multiple in a picture
23. CD-ROM: Compact Disk - Read Only Memory
24. DVD: Digital Video Device/Data
25. Crosshatch: Hatch Type: Diamond Pattern
Ex: Knurl
26. Volume of a solid of basic shapes: l x w x h
27. Area of basic shapes: square= a^2
rectangle= l*b
triangle= bh/2
trapezoid= (b1 + b2) h/2
circle= pi*r^2
28. Absolute coordinates: point in space that is based off of the distance from the
origin
29. Memory (Computer): Any physical device capable of storing information tem-
porarily or permanently
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