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

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