Final answer:
The four important characteristics of secondary storage are media, capacity, storage devices, and access speed. These include various forms of non-volatile storage media, the amount of data that can be stored, the hardware for data access, and the speed of data retrieval and writing.
Step-by-step explanation:
The four important characteristics of secondary storage introduced in Chapter 7 are media, capacity, Storage devices, and access speed. Secondary storage, often referred to as auxiliary storage, is non-volatile and retains information even when the computer is turned off. It includes various forms of media like hard drives and SSDs (Solid State Drives). The capacity refers to how much data can be stored on the medium. Storage devices are the actual hardware that reads and writes data to the storage media, such as DVD drives or external hard drives. And access speed is how quickly data can be retrieved from, or written to, the storage medium.