Certified Fiber Optics Practice Exam

In what type of enclosure are fiber optic cable splices protected for outdoor use?

1. Box Closure

2. Splice Closure

3. Terminator Case

4. Connector Housing

The correct answer is: Splice Closure

Fiber optic cable splices are protected in a splice closure for outdoor use because this type of enclosure is specifically designed to house and safeguard splices from environmental factors such as moisture, temperature fluctuations, and mechanical stresses. Splice closures are typically weatherproof and can be used in a variety of installations, allowing for both ease of access for future maintenance and robust protection for the delicate fiber splices within. The design often includes sealing materials and pressure-equalizing features to prevent water ingress and ensure long-term reliability in outdoor environments. The other options do not focus specifically on protecting splices. For instance, a box closure is more general and might not provide the specialized protection required for splices. A terminator case is generally used to provide a termination point for fiber optic cables rather than to protect splices. A connector housing is meant for housing fiber optic connectors, focusing more on the connection points than on splice protection. This specificity of function is what makes splice closures the correct choice for this application.