Computer Studies Questions
Question 291:
When does the output of a NAND gate =1?
- A Whenever a 0 is present at an input
- B Only when all input =0
- C Whenever 1 is present at an input
- D Only when all input =1
Question 292:
A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is ____________
- A AND gate
- B OR gate
- C NAND gate
- D XOR gate
Question 293:
The end users are able to operate at the _______ tier.
- A Model
- B Application
- C Data
- D Presentation
Question 294:
A tier in which the database resides along with the query processing language is called
- A Application tier
- B Data tier
- C Presentation tier
- D Model tier