________ restricts access to a shared variable to only one thread at any given time.

To begin conducting an investigation, you start by ____ the evidence using a variety of methods.

a. copying b. analyzing c. opening d. reading

The ____________________ encoding method is the simplest encoding method where either positive or negative voltage is assigned to bit “1” and zero voltage is assigned to bit “0”.

Fill in the blank(s) with the appropriate word(s).