Network and Security- Foundations- D315 Correct Questions & Answers!!

TCP/IP - ANSWER Transmission Control Protocol/Internet Protocol Application Layer - ANSWER This layer is responsible for the communication protocols between nodes. The protocols in this layer include hypertext transfer protocol (HTTP and HTTPS), Secure Shell (SSH), and network time protocol (NTP), among many others. Transport Layer - ANSWER This layer is responsible for the end-to-end transport of data. The protocols that live in this layer are transmission control protocol (TCP) and user datagram protocol (UDP). Network Layer - ANSWER This layer defines the logical transmission protocols for the whole network. The main protocols that live in this layer are internet protocol (IP), internet control message protocol (ICMP), and address resolution protocol (ARP). Network interface Layer - ANSWER This layer establishes how data should be physically sent through the network. OSI Model - ANSWER Open Systems Interconnection Model Physical Layer (Layer 1) - ANSWER This layer is responsible for the physical connections of the devices in the network. This layer is implemented through the use of devices such as hubs, repeaters, modem devices, and physical cabling. Data Link Layer (Layer 2) - ANSWER This layer is responsible for the error-free delivery of data to the receiving device or node. This layer is implemented through the use of devices such as switches and bridge devices, as well as anything with a network interface, like wireless or wired network cards. Network Layer (Layer 3) - ANSWER This layer is responsible for the transmission of data between hosts in different networks as well as routing of data packets. This layer is implemented through the use of devices such as routers and some switches. Transport layer (layer 4) - ANSWER In this layer protocols ensure that data are transferred from point A to point B reliably and without errors.