CCNA - Network Fundamentals Exam Questions with Answers Graded A+

CCNA - Network Fundamentals Exam Questions with Answers Graded A+ What is the number and name of the layers of the modern TCP/IP model? layers - Physical, Data Link, Network, Transport, and Application. What is at Layer 1 of the TCP/IP model, the Physical layer? There are 5 Physical cables and connectors, and anything related to light or electricity traveling over cables. What is at Layer 2 of the TCP/IP model, the Data Link layer? MAC addresses with data structured into frames. The frames include the source and destination MAC addresses in the header. What is at Layer 3 of the TCP/IP model, the Network layer? Logical addressing, such as IPv4 and IPv6 addresses that are globally unique and sent through routers to reach their destinations. What is at Layer 4 of the TCP/IP model, the Transport layer? 1) Transmission Control Protocol (TCP). 2) User Datagram Protocol (UDP). 3) Port numbers from 1 to 65,535.