CCT-CCNA Routing and Switching Study Guide Chapter 1 Already Solved 100%

Layer 1 is the Physical Layer Its transmission units are called bits The Layer covers all the physical devices and cabling - Answer What is Layer 1 of the OSI Model? What are the transmission units called? What does the Layer do? Layer 2 is the Data Link Layer Its transmission units are called Frames The Layer covers MAC or Physical Hardware Addressing - Answer What is Layer 2 of the OSI Model? What are the transmission units called? What does the Layer do? Layer 3 is the Network Layer Its transmission units are called Packets The Layer covers IP Addresses and determines the best way to move data through a network - Answer What is Layer 3 of the OSI Model? What are the transmission units called? What does the Layer do? Layer 4 is the Transport Layer Its transmission units are called Segments The Layer covers TCP/UDP and is responsible for transmission of data - Answer What is Layer 4 of the OSI Model?