What was the only method of sharing files between computers before networks were invented?

Data for which there is temporarily no room in ram is diverted to where on your computer? question 9 options: a) the paging file on the hard drive b) the system file on the hard drive c) the memory file on the hard drive d) the cpu cache

Suppose we have a byte addressable computer that has a 32-byte cache with 8 bytes per block. the memory address is 8 bits long. the system accesses memory addresses (in hex) in this exact order: 6e, b9, 17, e0, 4e, 4f, 50, 91, a8, ab, ad, 93, and 94. (a) assuming the cache is direct mapped, what memory addresses will be in cache block 2 after the last address has been accessed? (b) assuming the cache is direct mapped, what is the hit ratio for the entire memory reference sequence given, assuming the cache is initially empty? (c) assuming the cache is 2-way set associative with a lru replacement policy, what is the hit ratio?

Awell-diversified portfolio needs about 20-25 stocks from different categories is this true or false?