CCNA: Cisco Certified Network Associate — Question 719

What is a similarity between OM3 and OM4 fiber optic cable?

Answer options

• A. Both have a 62.5 micron core diameter.
• B. Both have a 100 micron core diameter.
• C. Both have a 50 micron core diameter.
• D. Both have a 9 micron core diameter.

Correct answer: C

Explanation

The correct answer is C because both OM3 and OM4 fiber optic cables are designed with a 50 micron core diameter, which allows for better performance in multimode applications. The other options are incorrect as they refer to different core diameters that do not apply to either OM3 or OM4 cables.