What  is the difference  between dynamic and static IP-address?

To each computer in the Internet it is produced IP-address. Certainly, it is     possible   for each user to produce static IP-address, But it is necessary to consider   that, for example in an IP-network of class C only  254 addresses – Means static  addresses it is possible to provide only 254 clients.   Certainly, the provider can order 5 more or 10 networks, but, first, today   Deficiency of IP-networks and organizations which are engaged is already   observed Output of addresses demand to prove necessity of reception of the new   IP-network and secondly, because of deficiency of IP-networks InterNIC demands   payment For new networks that accordingly will entail price increases on on-line services. For the purpose of reduction of price on on-line services providers provide to the user the dynamic IP-address, i.e. you IP-address can vary. But the principle of output of addresses is constructed so that the address produced to you will be fixed for you as it is possible longer (approximately, in a current 3-5 hours). Anyway, if you call back in a current of several minutes, that you receive that address from which worked at the last minute.