Network

Both PC and server are hosts. Network Applications: WhatsApp, Zoom, browsers are examples of applications that are run by hosts to communicate over th

Application layer is the highest level of internet protocal layers. Server offers service to the client, Client requests service from the server.Examp

1. Domain Name System Servers communicate using ip addresses. However, its easier for us to remember the host names instead. This is why DNS server he

Client makes an API call to pass the message to TCP.TCP then attaches TCP header to the message, making it a segment. Network layer receives it, adds

1. Performance of RDT 3.0 (timeout) Throughput is the same at any point of time, because when there are 2 packets send, the x (times) 2 will be cance

Network layer delivers packets to receiving hosts. Routers look at destination ip address to decide the next hop of routing.DHCP discover looks for th

Because not one organization owns all the networks, the routing is done in a hierarchical way. Intra-AS: When routing is done within the same network.

In the TCP/UDP header, the source and the destination port number will be specified. In the IP header, the source and the destination IP address will

To send data between N nodes, each link needs to be addressed, meaning that each node should know where the message is coming from and where to send

Node has no method of distinguishing data -> collisionWho, when, and for how long does a person talk at a cocktail party?Channel partitioning could be

What is it? Confidentiality: only the sender and the receiver can understand the message. Authentication: needs to authenticate the sender and the re

인터넷 상에서 클라이언트와 서버가 자원을 주고 받을 때 쓰는 통신 규약.HTTP는 TCP/IP 모델(그리고 OSI 모델)의 애플리케이션 계층에서 작동합니다. 애플리케이션 관점에서는 가장 "상위" 계층에 있지만, 기능적으로는 하위 네트워크 계층에 전적으로 의존합니다.TC