Question 21
Which of the following is designed to provide protection from harmful chemicals?
Question 22
Which of the following fire ratings refers to the time period that the unexposed surface of a firestop assembly does not exceed 180 degrees C (325 degrees F) above its initial temperature?
Question 23
Which of the following steps should be performed first when an installer is pulling optical fiber cable?
Question 24
What is the minimum recommended amount of vertical clearance for open-top cable supports?
Question 25
What is the maximum permissible amount of untwisting for category 5e cable and higher?