WGU C172 Network And Security Foundations. Exam Review Questions & Ans. Latest Update. Verified 2024

OSI Model Layer 1 - -Physical The Physical layer represents the physical medium that connects the computers together. OSI Model Layer 2 - -Data Link represents how computers logically connect to the network. Protocols at Layer 2 define how computers can share access to a common medium, such as a wired or wireless network. This includes protocols such as 802.3 Ethernet and 802.11 Wi-Fi. OSI Model Layer 3 - -Network allows computers on different networks to exchange data. OSI Model Layer 4 - -Transport ensures that data received from the upper OSI model layers are delivered according to the needs of the application, OSI Model Layer 5 - -Session allows computers to differentiate between the connections within a service on the same host. OSI Model Layer 6 - -Presentation serves as a translation and security layer between applications, allowing computers to encode and encrypt data. OSI Model Layer 7 - -Application