Fiber optic cables contain strands of glass fibers inside an insulated casing. They are designed for long-distance, high-performance data networking and telecommunications. When compared to wired cables, the fiber optic cables provide higher bandwidth and can transmit data over longer distances. Fiber optic cables support the internet, cable television, and telephone systems. While most fiber optics are installed to support long-distance connections between cities and countries, some residential internet providers have invested in extending their fiber installations to the suburban neighborhoods for direct access by households. A fiber optic cable is less susceptible to interference. A copper network cable requires shielding to protect it from electromagnetic interference. While this shielding helps, it is not enough to prevent interference when many cables are strung together in proximity to one another. The physical properties of fiber optic cables avoid most of these problems.