4.There are two ways to know where the end of a variable length item, like a message payload, is. What are they

it can either be 2. or 4. : ) tell me if i'm wrong or right

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).

which of the following is not an effect of technology on farming?

the correct answer is: it makes farmers perform more tasks by hand for apex.