Final answer:
DSL and cable are the two connection options providing an always-on, high-bandwidth Internet connection suitable for a home office. Both use infrastructure capable of supporting the high data demands, with DSL using telephone lines and cable using cable TV networks.
Step-by-step explanation:
The two connection options that provide an always-on, high-bandwidth Internet connection to computers in a home office are DSL (Digital Subscriber Line) and cable internet services. Both DSL and cable provide a reliable, persistent connection, unlike dial-up which is not always-on and offers significantly lower bandwidth. DSL uses existing telephone lines without interfering with voice service, offering speeds that can handle the demands of a home office. Cable internet utilizes the same cable television network to deliver high-speed internet alongside television services, often providing faster speeds than DSL.
Advancements in technology such as optical fibers yield substantial improvements to internet communications. Optical fiber communication systems have low loss, allowing light to travel long distances without significant dimming. They provide high bandwidth, thanks to the properties of laser light, meaning more data can be transmitted simultaneously. Additionally, they reduce crosstalk, preventing undesirable interference between adjacent fibers. These benefits make fiber optics an excellent infrastructure for supporting high-speed internet connections like DSL and cable.