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Q.1
Which of the following doesn’t corresponds to NAND gate?
a)
b)
c)
d)
Q.2
What is the minimum number of NAND gates required to implement an EXOR gate?
a) 2
b) 3
c) 4
d) 5
Q.3
Which of the following logic describes the EXOR gate?
a) y <= ((not a) OR (not b)) AND ((not a) OR (not b));
b) y <= ((not a) OR b) AND (a OR (not b))
c) y <= ((not a) AND (not b)) OR ((not a) AND (not b));
d) y <= ((not a) AND b) OR (a AND (not b));
Q.4
What logic circuit is described by the following code? ARCHITECTURE gate OF my_gate IS BEGIN WITH ab SELECT y<= 0 WHEN “OR “10”; 1 WHEN OTHERS; END gate;
a) NAND
b) NOR
c) EXOR
d) EXNOR
Q.5
Sometimes gates modeled with ________ modeling may behave differently.
a) Dataflow
b) Behavioral
c) Structural
d) Structural and Behavioral
Q.6
The odd behavior of gates in dataflow modeling may be the result of ________
a) Sequential statements
b) Wrong logic definitions
c) Concurrency
d) Inappropriate assignments
Q.7
Which of the following option represents a structural model for not gate?
a)
b)
c)
d)
Q.8
In CPLD, there are many input switches arranged in a switch bank, if an AND gate is behaving oddly but could be the reason?
a) Incorrect interconnections
b) Concurrent execution of statements
c) Mismatch of ports name and switches
d) Wrong libraries included
Q.9
For gates, which of the following modeling style will corresponds to shortest code?
a) Behavioral
b) Data flow
c) Structural
d) Both data flow and behavioral
Q.10
Generally, structural modeling is used with another modeling style.
a) True
b) False
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