LAST NAME

FIRST NAME

$51.$ Explain how both controlled and contention media access control work.

$52.$ List three ways of reducing errors.

$53.$ Explain the differences between a TCP packet and a UDP packet.

$54.$ Explain connection$-$oriented messaging and connectionless messaging.

$55.$ List the seven OSI layers and then for each layer list the associated responsibilities of that layer.

Layer

Characteristics

Header$-2$ items

data unit

Protocol

Device.