A. Explain the purpose and functionality of HTTP The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems.[1] HTTP is the foundation of data communication for the World Wide Web. Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text. HTTP is the protocol to exchange or transfer hypertext. The standards development of HTTP was coordinated by the Internet… Continue reading Objective 1.05 Explain the features and functionality of protocols and technologies specific to the application layer

A. Compare/Contrast purpose and functionality of MTU and MSS In computer networking, the maximum transmission unit (MTU) of a communications protocol of a layer is the size (in bytes) of the largest protocol data unit that the layer can pass onwards. MTU parameters usually appear in association with a communications interface (NIC, serial port, etc.). Standards (Ethernet, for example) can fix the size of an MTU;… Continue reading Objective 1.04 Explain the features and functionality of protocols and technologies specific to the transport layer

A. Explain the purpose and functionality of IP addressing and subnetting. IP (Internet Protocol) addresses are used to identify hosts on the campus Internet, a Cornell network that ties into the Internet, a global network. If the computer is attached to Cornell’s network, it needs an IP address to be recognized as part of the… Continue reading Objective 1.03 Explain protocols and apply technologies specific to the Network layer.

A. Explain the purpose of the switch’s forwarding database. Both bridges and switches build a forwarding database. The database is a list of Data Link (MAC) addresses and the port used to reach the device. Bridges and switches can automatically learn about devices to build the forwarding database. A network administrator can also program the… Continue reading Objective 1.02 Explain protocols and technologies specific to the data link layer.

A. Describe the function of each OSI layer   B. Differentiate between the OSI layers The Open Systems Interconnection (OSI) reference model describes how information from a software application in one computer moves through a network medium to a software application in another computer. The OSI reference model is a conceptual model composed of seven… Continue reading Objective 1.01 Explain, compare, and contrast the OSI layers.