Tag Archives: UoL RPL

DNS is a great example of an application layer service that uses UDP for the transport layer instead of TCP, this can be broken down into a few simple reasons TCP UDP A DNS server never needs to care about … Continue reading →

Computers only understand 1 and 0. DNS (Domain Name System) – A global and highly distributed network service that resolves strings of letters into IP addresses for you. The IP address for a domain name can also change all the … Continue reading →

Client: SYN packet sender – The client sends a SYN packet to the server via TCP. It tells the server where it wants to connect, and provides the initial sequence number. Server – SYN packet receiver SYN packet – The … Continue reading →

Valid IP Address Subnetting – the process of taking a large network and splitting it up into many individual smaller subnetworks or subnets. Address classes give us a way to break the total global IP space into discrete networks. Network … Continue reading →