Questions

Distributed systems work in a network. They can share the network resources, communicate with each other.

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.

The nervous system of the human brain consists of the central nervous system which has brain and the spinal cord and the peripheral nervous system which has perpheral, cranary, spinal nerves.

Internal marketing is the process of motivating and empowering the employees of a company to work as a team for the overall well-being of the customers and thereby the company itself. This is actually the core to succes of a company. A harmonised effort  within the company is an utmost necessity to provide customers with services at a desired level. If a firm doesn't deliver the service it promises in its marketing campaign, it will fail for sure. And it only can keep that promise when all of its employees at all levels realise what actually it is going to deliver. 

The greatest single drop of the waterfall, Salto Angel of Venezuela, measures 807m and the width at the base is about 150 m. From top to bottom the Angel falls measures 979 m - almost 1 km.