What are contention based MAC?

What does certified document mean? Can coax connector cause attenuation losses? 8085 ALP to perform 32 bit binary addition? Where physical address stored in computer network? Can you vomit on your computer? What does the name Norton mean? What is open office database? Can I replace the light bulb in a fiber optic tree? Is there a game that you don't have to pay to be a member? Who plays Bree in lab rats? How do you install vce software in ubuntu? What are computer instructions that carry out a task on the computer? What was Woodrow Wilson's term of office? Do meerkats' sweat? What is the type of RAM is in the most expensive computer? How much are keyboards? What symbol would you expect to see on a rat poison package? How does resolution relate to the size of an lcd monitor? How do you develop a learning plan to improve own work performance? Why is saving a word file in the word 97-2003 format desirable?