Programmable logic - Study guides, Class notes & Summaries

CompTIASecurity+PracticeTestExamQuestionsand Answers. During an assessment of a manufacturing plant, a security analyst finds several end-oflife programmable logic controllers, which have firmware that was last updated three years ago and known vulnerabilities. Which of the following BEST mitigates the risks associated with the PLC's? - Correct Answer Implement network segmentation to isolate the devices A user is attempting to view and older sent email, but is unable to open the email...

ELC Test 3 Questions with All Correct Answers What does PLR stand for? - Answer-Programmable logic relay What is the most common stand-alone timer used in control applications today? A. Dashpot timer B. solid-state timer - Answer-Solid-state timer What is a dashpot timer? - Answer-is a timer that provides time delay by controlling how rapidly air or liquid is allowed to pass into or out A synchronous clock timer: - Answer-is a timer that opens and closes a circuit depending on t...

1800's: Analytical Engine - Charles Babbage - Answer-Sign of first programmable computer 1911: Hollerith's machine (Mechanical tabulator) - Answer-Hollerith's machine was a complete success and the company that manufactured Hollerith's machine, in 1911, merged with its main competitor, IBM. 1947: ENIAC (Electronic Numerical Integrator and Computer) Vacuum Tubes - Answer-- Vacuum Tubes - First ever electronic digital computer - 5000 calculations/sec (fast for time, slow now) 1975: Firs...

Power Engineering - 4A Instrumentation Practice Questions with Verified Answers Common indicators necessary for proper process operation may include: a. low water cut-offs, flame scanners and safety values b. pressure, value position, and conductivity measurement devices c. interlocks and permissives d. programmable logic controls e. pneumatic, hydraulic, and electrical switches b. pressure, value position, and conductivity measurement devices A sensing element receives its sig...

COMPTIA SECURITY+ SY0-601 EXAM 2024/ACTUAL EXAM/180 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS BY EXPERT) 1. A security administrator suspects an employee has been emailing propri- etary information to a competitor. Company policy requires the administrator to capture an exact copy of the employee's hard disk. Which of the following should the administrator use? A. dd B. chmod C. dnsenum D. logger ANS : A 2. Which of the following will MOST likely adversely impact the...

Computer correct answersAn electronic device that except input, processes data, displays output, and stores data for retrieval later Hardware correct answersThe physical components of a computer Router correct answersA device that controls traffic between network components and usually has a built-in firewall Pixel correct answersSmall dot of color that makes of a graphic displayed on a computer screen Bytes correct answersA series of eight bits The field size property that stores w...

COMPTIA SECURITY+ SY0-601 EXAM 2024/ACTUAL EXAM/180 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS BY EXPERT) 1. A security administrator suspects an employee has been emailing propri- etary information to a competitor. Company policy requires the administrator to capture an exact copy of the employee's hard disk. Which of the following should the administrator use? A. dd B. chmod C. dnsenum D. logger ANS : A 2. Which of the following will MOST likely adversely impact...

PLC Chapter 6 Review Practice Test. What is a programmable logic controller (PLC)? - CORRECT ANSWER a specialized computer used to control machines and process. What is the standard programming language used with PLCs? - CORRECT ANSWER Relay ladder logic (RLL) The programmable controller operates in real time. What does this mean? - CORRECT ANSWER that an event taking place in the field will result in an operation or output taking place. What is the function of a PLC interface module...

Programmable Logic Controllers 5th Edition Petruzella Solutions Manual0 Programmable Logic Controllers 5th Edition Petruzella Solutions ManualProgrammable Logic Controllers 5th Edition Petruzella Solutions Manual

Adding I/O points in an existing rack is called  local expansion The speed at which a LAN processes a piece of information is called  baud rate As a good general rule, you should replace the battery in a programmable controller  annually Which documentation shows how all field devices are wired and connected to the controller?  Schematic diagram Which type of data transmission uses a single frequency?  Baseband The process of relating software addresses to the physical l...