C
Communication Communication has four components: sender, receiver, message, and medium. In networks, devices and application tasks and processes communicate messages to each other over media. They represent the sender and receivers. The data they send is the message. The cabling or transmission method they use is the medium.
Connection In networking, two devices establish a connection to communicate with each other.
D
DHCP | Developed by Microsoft, DHCP (Dynamic Host |
| Configuration Protocol) is a protocol for assigning |
| dynamic IP addresses to devices on a network. With |
| dynamic addressing, a device can have a different IP |
| address every time it connects to the network. In some |
| systems, the device's IP address can even change while |
| it is still connected. It also supports a mix of static and |
| dynamic IP addresses. This simplifies the task for |
| network administrators because the software keeps track |
| of IP addresses rather than requiring an administrator to |
| manage the task. A new computer can be added to a |
| network without the hassle of manually assigning it a |
| unique IP address. DHCP allows the specification for the |
| service provided by a router, gateway, or other network |
| device that automatically assigns an IP address to any |
| device that requests one. |
DNS | Domain Name System is an Internet service that |
| translates domain names into IP addresses. Since |
| domain names are alphabetic, they're easier to |
| remember. The Internet however, is really based on IP |
| addresses every time you use a domain name the DNS |
| will translate the name into the corresponding IP |
| address. For example, the domain name |
| www.network_camera.com might translate to |
| 192.167.222.8. |
- 42 -
