Final answer:
The two main aspects of computer maintenance are updating software and managing storage space, which ensure security and efficient operation of the computer.
Step-by-step explanation:
The two main aspects of computer maintenance are updating software and managing storage space. Updating software is crucial for security, performance, and accessing new features. Managing storage space helps to ensure that the computer runs efficiently and reduces the risk of data loss due to a full hard drive.
While cleaning hardware like the computer case and keyboard is also important, it does not directly impact the performance and reliability of the computer's operations like software updates and storage management do.