• state the two possible approach for communication over an internetwork
• define circuit switching
• describe the three stages when sending data across a network
• state the 6 pros of circuit switching
• state the 6 cons of circuit switching
• define packet switching
• describe packet switching
• state the 6 pros of packet switching
• state the 6 cons of packet switching
• explain why hopping is used.
• describe the use of hop number
• explain how checksum is used.
• comparison of features of circuit and packet switching