CSC 3020 Midterm: CSC 3020 midterm review chapter 1-3 (1)

What method is used to manage contention-based access on a wireless network?

1. CSMA/CD
2. priority ordering
3. CSMA/CA
4. token passing

Which of these are the two major sources of nitrate pollution in rivers?

a. the burning of fossil fuels by factories and cars

b. animal wastes and the burning of fossil fuels by cars

c. animal wastes and fertilizers

d. fertilizer runoff and the burning of fossil fuels by cars

e. animal wastes and the burning of fossil fuels by factories