Local Area Network

A CSS class is a line of code in your CSS file which corresponds to the HTML equivalent of that class; it is defined with a dot: "."

<div class="test">This is a test.</div>

CSS:

.test { display: block; background: #f90; color: #fff; }

The classes are used to define the style for the individual element of the web page or to determine different styles for the one tag. Syntax for the classes will be the following:

Tag.Name of class { property1: value; property2: value; ... }

Inside of the style sheet the desirable tag is written first, than, after the semicolon - the user's class name. In order to define in HTML code the fact, that tag with the definite style is used, parameter is added to the tag

Armored electrical cable contains insulated electrical service wires protected by a flexible steel covering. Unarmored electrical cable has no protective flexible steel covering, its covering is made of plastic.

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Armored cable (BX) is the older version of Metal Clad cable (MC). It was flexible steel covered wire that used the steel as it's Ground. BX was a poor grounding system so it was replaced with MC which looks similar but has a separate Grounding conductor. MC is most often made with aluminum as its cover.

Armored cable if used today will refer to MC type wiring.

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Some kinds of armored cable are in fact made to a tougher standard than the ordinary soft wire strand types of shielded cable that are used for hooking-up antennas. The 'armor' is actually a thin flexible metal film that better protects the wire or wires inside from damage in high use or high traffic areas. Such kinds of armored cable are also used in radio frequency assemblies in electronic equipment.

A wireless LAN or WLAN is a wireless local area network, which is the linking of two or more computers without using wires. WLAN utilizes spread-spectrum or OFDM modulation technology based on radio waves to enable communication between devices in a limited area, also known as the basic service set. This gives users the mobility to move around within a broad coverage area and still be connected to the network. For the home user, wireless has become popular due to ease of installation, and location freedom with the gaining popularity of laptops. Public businesses such as coffee shops or malls have begun to offer wireless access to their customers; some are even provided as a free service. Large wireless network projects are being put up in many major cities. Google is even providing a free service to Mountain View, California and has entered a bid to do the same for San Francisco. New York City has also begun a pilot program to cover all five boroughs of the city with wireless Internet access. A wireless LAN or WLAN is a wireless local area network, which is the linking of two or more computers without using wires. WLAN utilizes spread-spectrum or OFDM modulation technology based on radio waves to enable communication between devices in a limited area, also known as the basic service set. This gives users the mobility to move around within a broad coverage area and still be connected to the network. For the home user, wireless has become popular due to ease of installation, and location freedom with the gaining popularity of laptops. Public businesses such as coffee shops or malls have begun to offer wireless access to their customers; some are even provided as a free service. Large wireless network projects are being put up in many major cities. Google is even providing a free service to Mountain View, California and has entered a bid to do the same for San Francisco. New York City has also begun a pilot program to cover all five boroughs of the city with wireless Internet access.

Its used in collector amplitude modulation,Radio frequency recievers ..etc

depends on the purpose of the device

Size and scope. A LAN is a Local Area Network, and is usually confined to a single building. A MAN is a Metropolitan Area Network and would cover multiple buildings in a city area. A WAN is a Wide Area Network and can cover any size geographical area.

It is call a network

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VINTEL ENGINEERING

The most commonly implemented network services are Dynamic Host Configuration Protocol (DHCP), Domain Name Service (DNS), and Network Address Translation (NAT). These network services are implemented on nearly every network that connects to the Internet.

CMOT

Well distance is pretty obvious. LAN's are usually in a uni campus, school or home. A WAN is over a much larger distance, i.e., a series of office buildings spread over a large area.

10,485,760 I do believe.

16

Peer-to-Peer

The word duty is derived - through Middle-English - from the Anglo-Norman French word deute -> which in turn is derived from the Old-French word deu meaning "owed". That word derived from the Latin word debitus.

Fiber Optic cables do not use copper wires; they use either glass or plastic for the transmission medium.

Aluminium is also used in certain applications, instead of copper, as it is cheaper although very slightly less conductive.

I don't know the present situation, but aluminium-cored wires were introduced into the British telephone networks in the 1970s, at least for local distribution; whilst aluminium bar material was used for the main bus-bars supplying low-voltage power to the switches in the telephone exchanges.

cerys mathews

Usually the router.

ICMP messages are of interest both to end-hosts and intermediate routers, although some messages are generally only sent by routers. It is never permissible for an ICMP error message to be generated as the result of receiving an ICMP error message-this avoids the infinite recursion of ICMP message generation (see RFC 1122, related link.). It is also forbidden to send an ICMP message as the result of a datagram that references multiple hosts, such as a broadcast or multicast message, or upon receipt of a noninitial fragment (see the "IP Fragmentation" section earlier in the chapter). These restrictions are designed to prevent broadcast storms.

Performance

An optical switch is a switch that enables signals in circuits to be switched from one circuit to another.

True, they do not exist.

Because it creates a lot traffic which takes a lot of bandwidth. As result you will have a slow network which spends most of its time on broadcasting.

LAN = Local Area Network (this is local, in your own computer network)

WAN = Wide Area Network (this is wide, most of the time this means the internet)