Bits and Bytes WEEK 3: The Transport and Application Layers

Transport layer - Answer- This is the layer 4 protocols. It ensures accurate delivery of data; solves transmission problems; provides error-free reassembly and control traffic to be directed to specific network applications. Application layer - Answer- This layer is on top of the 5 layer model and is for applications that need to initiate communication with other applications on a remote host. These services work with the transport layer to send and receive data. multiplex, demultiplex - Answer- The transport layer has the ability to ___________ and ___________ multiplex - Answer- In the in the transport layer this term means that nodes on the network have the ability to direct traffic toward many different receiving services. demultiplex - Answer- In the transport layer this term means to take traffic that's all aimed at the same node and delivering it to the proper receiving service. Port - Answer- This is a 16-bit number used to direct traffic to specific services running on a networked computer. Server or Service - Answer- This is a program running on a computer waiting to be asked for data. Client - Answer- A program that is requesting data. Colon - Answer- Ports are normally denoted with a ______ after the IP address FTP - Answer- This is an older method used for transferring files from one computer to another, but you still see it in use today TCP - Answer- An IP datagram has a payload section and this is made up of what's known as a _______ segment. TCP segment - Answer- This is made up of a TCP header and a data section Data section - Answer- This section of the TCP segment is a payload area for where the application layer places its data. Destination port - Answer- This is a field in the TCP segment and has information about the port of the service the traffic is intended for. Source port - Answer- This is a field in the TCP segment and is a high numbered port chosen from