Throughout the day, we hear many acronyms. When I take my car into the shop to find out why the check engine light to me is activated, the mechanic told me that the problem is with my O2 sensor and it cost me $ 10 dollars for dollars portion and $ 50 per hand -d'œuvre. OK, I know he was referring to an oxygen sensor. What about medical terms? The next time you visit your doctor count the number of different acronyms or terms you hear during your visit: ACL, CBC, ENT, WNL, FX ... the list can go on and on
I must admit that those of us in the field of computer science and technology are just as guilty as the various other professions as regards the use of acronyms. I admit there were times when I took great joy in saying words and acronyms in the hope of seeing a totally confused look on his face looking at me.
DNS, DHCP, IP address and ISP are several terms you may have heard of but may not be sure what they are or what they are used to. Let's start with ISP: Internet Service Provider. An ISP is a company that provides access to the Internet which can take various forms ranging from a cable company to a telephone company. Beyond the actual Internet, an ISP may also provide you with an email account in addition to providing you with space on their web server to host a personal Web page.
IP address, IP stands for Internet Protocol. IP addresses that computers use to communicate. You can think of them being similar to a phone number. There are static and dynamic addresses. Static addresses are permanently assigned to a computer. Most sites have static IP addresses. Dynamic addresses are distributed to computers on a temporary basis as they are needed. Your ISP will probably assign a dynamic address to your computer when you connect to the Internet. An IP address is composed of four sets of numbers separated by periods, such as 70.61.250.11.
DNS stands for Domain Name Server. Continuing the analogy of phone you can think of a DNS server as a phone book, because it keeps a list of IP addresses and the corresponding names. It is much easier to remember names and words to remember the numbers. For example, if you want to open the public website of Central Insurance in your browser, you can enter in the address www.central-insurance.com or you can enter 70.61.250.11 bar. What's easier to remember?
DHCP stands for Dynamic Host Configuration Protocol. DHCP servers maintain a list of available IP addresses. When a computer requests an IP address, it will provide a temporary address to the computer to use. The time during which a computer can use the temporary address is called a lease. When the DHCP server issues an address, it also provides the address of a DNS server so that your computer knows how to translate names to addresses.
Now let's put it all together. When you connect your computer to the Internet, your ISP will issue your computer a dynamic IP address from their DHCP server and provide the address of a DNS server. When you enter the www.central-insurance.com web address in the address bar, your computer will use the DNS to translate the Web address to an IP address 70.61.250.11, your computer will then use to communicate IP addresses assigned to the Web server Central.
I hope that I have helped to demystify some technical acronyms that you may encounter. Are there any others I may have missed?
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