How many layers are in the OSI model?

A. seven

B. ten

C. two

D. five

I believe it is seven am i correct?

What are the three uses of a screw?

All of these are true about using adhesive except: a. dissimilar materials can be joined. b. mixing tips are product and material specific. c. a specific application gun may be required. d. two-part adhesives are dispensed using two mixing tips

Whats three fourths of 15(this is supposed to be in math but i clicked too fast)