Networking Questions

It is a very simple protocol used for transmission of IP datagrams across a serial line.

It is a host that has a multiple network interfaces and that requires multiple IP addresses is called as a Multi-homed Host

Wide-mouth frog is the simplest known key distribution center (KDC) authentication protocol

It is a sequence of IP addresses identifying the route a datagram must follow. A source route may optionally be included in an IP datagram header

There are two IP address assigned to each device on a Wi-Fi network.

An Internal (Private) and an External (Public) IP address.

Internal IP address is used for communication between Your computer and a smartphone or whatever devices that are connected to that Wifi network. This is unique for each. If they are same the system cannot differentiate between each device.

While, the External IP address is that visible to the the internet - the websites, the internet connected Apps so on. By default, Routers with NAT (all routers today have it) assign same Public IP address to all devices under its network.

MAC - Media Access Control, address is a globally unique identifier assigned to network devices, and therefore it is often referred to as hardware or physical address.

MAC addresses are 6-byte (48-bits) in length, and are written in MM:MM:MM:SS:SS:SS format.

When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions

Sending a message to a group is called multicasting, and its routing algorithm is called multicast routing