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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.
E
Enterprise network
An enterprise network consists of collections of networks
connected to each other over a geographically dispersed area.
The enterprise network serves the needs of a widely distributed
company and operates the company’s mission-critical
applications.
Ethernet
The most popular LAN communication technology. There are a
variety of types of Ethernet, including 10 Mbps (traditional
Ethernet), 100 Mbps (Fast Ethernet), and 1,000 Mbps (Gigabit
Ethernet). Most Ethernet networks use Category 5 cabling to
carry information, in the form of electrical signals, between
devices. Ethernet is an implementation of CSMA/CD that
operates in a bus or star topology.
F
Fast Ethernet
Fast Ethernet, also called 100BASE-T, operates at 10 or
100Mbps per second over UTP, STP, or fiber-optic media.
Firewall
Firewall is considered the first line of defense in protecting private
information. For better security, data can be encrypted. A system
designed to prevent unauthorized access to or from a private
network. Firewalls are frequently used to prevent unauthorized
Internet users from accessing private networks connected to the
Internet, especially Intranets all messages entering or leaving the