1.PLS\'s are better than a PC to control process equipment because A. PLC\'s are
ID: 3349727 • Letter: 1
Question
1.PLS's are better than a PC to control process equipment because
A. PLC's are less likely to have viruses.
B.PlC's do not have a complex operating system.
C.PLC'S are more durable and reliable.
D. A and B and C.
2.Using the model discussed in class,the term"Ethernet" is considered to be a
A.protocal
B.configuration
C.Modium
D.application
3.A totalizer is used to
A.convert volumes into flow
B.convert flow into volumes
C.convert level into volume
D.convert volume into level
4.what is the advantage of using is compliment over is compliment?
A.1's compliment
B.2's compliment zero values
C.easier and faster
D,represent twice as many numbers
Explanation / Answer
1)D
Plc's are better than PC's because they are less likely to viruses ,as security is the protecting file system PLC's are less exposed to unauthorized access from the outside world.
The standard PLC has the embedded real-time operating system which is not complex than the PC's OS.The PLC' are robust the standard off-the shelf PLC does not have moving parts such as fan so it can with stand in harshing environment.
So option D is correct.
2) Ethernet is a link layer protocol for TCP/IP
So option A is the answer.
3)A totalizer is used to convert flow into volumes so the option is B
4) Two's compliment will have only one zero value where as one's compliment has two values I.e positive 0 and negative 0.
The correct option is B.
Hope it helps you.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.