Final answer:
It is true that companies can extend their internal network using public cloud services, enabling scalable and on-demand resources. However, it is false that high-voltage wires are wrapped in insulating material; they are suspended by insulators, with air serving as the insulation.
Step-by-step explanation:
The statement that a company can extend the capacity of its internal network by using the public cloud is true. The company can integrate cloud services as a form of network expansion to handle additional workload, provide extra storage, or support more users, without the need for substantial physical infrastructure investments. By leveraging cloud computing, a company can take advantage of the scalable and on-demand resources offered by cloud service providers.
Furthermore, addressing the true or false statement on high-voltage wires, the correct answer is false. High-voltage wires connected to metal-frame towers are indeed held aloft by insulating connectors known as insulators. However, these wires are not generally wrapped in insulating material. They are bare and do not have additional insulation because the air around them provides sufficient insulation, and the high elevation reduces the risk of unauthorized contact.