Cloud storage is especially useful for users of desktop computers.

The most common way for a virus to spread is by __________

a. Use of your email contacts b. Scanning your computer for network connections and copying itself to other machines on the network c. Locating Linux machines d. None of the above

If a query includes columns from multiple tables that have the same name, the statement must precede those column names with _________.

a. their database names. b. their database names and a dot. c. their table names and a dot. d. their table names.