Local Area Network

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Open Systems Interconnection ( OSI ) is a standard reference model for communication between two end users in a network. The model is used in developing products and understanding networks.

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what is the advantage of the metropolitan area network?

* sharing of resources such as printers; hence cost effective.

* can send local emails

Network+ Guide to Networks answer: Bridge, Switch, Router

CompTIA N+ certification is a proof to the candidate's expertise in installing, configuring and troubleshooting network hardware, protocols and peripherals. Upon the completion of this course, the candidate will be able to effectively troubleshoot the networking system.

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The entire 127 range (127.0.0.1 to 127.255.255.254) is considered the LOOPBACK address range, and is in the class A network. This address range or block is reserved just for local testing.

When you have a network containing at least two interconnected computer devices, you can call it a computer network. The main purpose of this computer network is to collaborate and perform communication tasks as well. Smart home technology is a perfect example of computer network. For more details visit Best Satellite Internet Provider and Electronic Installer In Pontotoc MS or call 662-509-57772 now.

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Every network is different; the only way to find out the vulnerabilities in a given network is to initiate an audit of the network. One piece of that is risk assessment, and from that you develop a vulnerability matrix.

switches does not have the database...much smarter than a hub.

There is actually more than three topologies for networking. Network topologies are categorized into the following basic types: * bus * ring * star * tree * mesh More complex networks can be built as hybrids of two or more of the above basic topologies.

Since there is no supporting information in the question it cannot be answered.

I suspect you're referring to a form, either on or off line. Address 1 is the number and street - e.g., 1234 W Main St. Address 2 is the apartment, condo, floor number, etc. - e.g., Suite 102 or Unit B.

It means if you have two currents houses at the time. I hope this helped.

If the hybrid network is designed right, it is the second-best (after full-mesh) topology you can have. A well designed hybrid topology, called so because it combines two or more other network topologies together, strengthens everything you want; speed, reliability, efficiency, etc., and weakens everything else.

Their biggest, really their only, disadvantage is how difficult they can be to design. Hybrids can get so complicated that, no joke, their designers have no clue as to how they work, all they know is that they do work. Their mysterious inner-machinations, or what a mathematician would call a non-linear design, makes them quite hard to troubleshoot, but if they're built right, there won't be any reason to troubleshoot.

The transmission speed of the cable is limited in most cases by the hardware attached to it.

Cat5 basic cable has been used successfully up to 1 gigabit speed using ethernet. There have been lab tests proving it might be useful for 10gigabit over short ranges but usually that requires Cat5e or Cat6 grade cable.

The most common speeds are 10/100 mb ethernet.

Ring, Star, Bus, Mesh.

A packet sniffer can also be used on the Internet to capture data traveling between computers. Internet packets often have very long distances to travel, passing through several routers that act like intermediate post offices. A packet sniffer might be installed at any point along the way. It could also be clandestinely installed on a server that acts as a gateway or collects vital personal information.




A packet sniffer is not just a hacker's tool. It can be used for network troubleshooting and other useful purposes. However, in the wrong hands, a packet sniffer can capture sensitive personal information that can lead to invasion of privacy, identity theft, and other serious eventualities.

A LAN is a local area network like your home network or Wifi, while a MAN is a Metropolitan Area Network, covering a city for example such as WiMax.

Usually the limitation is to do with the wires. For example, the concept of attenutation is a biggie that network builders must at all times be considerate off. To be brief, a signal can only be sent so far down a line before it "dies".

The problem gets worse if your using wireless. Wireless can only be reliably used over short distances. But unlike wired, there is a lot of variables to consider with wireless. For example, if you sit maybe 15 ft away from your wireless and monitor the signal, then get your dog (hopefully a big dog) to stand in front of the router. You will notice a considerable drop in your signal because the dog is made up of so much fluid.

Wired connections don't have these pitfalls, though from what I can remember from college, I think if someone shines a UV light onto the wire - even though its coated in plastic - the UV will still disrupt the signal. This is something you would have to take into consideration if you were putting a LAN in a niteclub. Obviously wireless is out because off all the people (people are made up from water, the same as the dog) and the wires cant be exposed to any UV lights. That would be a complex LAN to design/construct.

The world of computer networking is filled with acronyms and these four happen to be in order. Can you guess how?

OK, that's pretty easy. It's by distance from near to far. The only one of these that hasn't been around for ages is PAN or Personal Area Network. PANs include Bluetooth, USB, UWB (Ultra Wide Band) and FireWire. A personal area network is intended for your personal use to interconnect electronic devices you are using. Bluetooth is emerging as the king of wireless personal area networks. If your cell phone and laptop computer both have Bluetooth enabled, you can get Internet access for your computer via Bluetooth from your cell phone that is connected to an EV-DO or GPRS data network.

Most everybody has a LAN or Local Area Network now. There once were many protocols for connecting computers, printers, and telecommunications networks within the corporate environment. Eventually everyone migrated to Ethernet with TCP/IP. That has gelled to the point where every new technology had better have IP connectivity, at least at the edges. The standardization around the Internet Protocol and Ethernet has promoted an economy of scale to the point where you can buy a 10/100 Mbps Network Interface Card at Wal-Mart for under ten bucks.

Every PC and many printers now come with Ethernet ports standard. Most portable devices support the Wireless version of Ethernet, Wi-Fi, which is also termed a Local Area Network. A LAN is intended for use within a room, building or area. WiFi's range of around 300 ft. puts it into this category.

Within an office or corporate campus, networking revolves around the LAN or LANs running on CAT5, CAT5e or CAT6 copper wiring with some spans of fiber optic cable and some wireless LANs. When you leave the LAN, you enter the world of MANs and WANs.

MAN is Metropolitan Area Network. It's intended for use within a city. A typical example is a SONET Synchronous Optical Network that is set up as a pair of fiber optic rings within the business district of a city. The reason for a pair is to provide redundancy in case one of the rings fail. The other takes over within 50 msec, perhaps so fast the outage isn't even noticed by many users. You get to the MAN with an access network connection. That may be an OC3 or OC12 fiber optic link or a T1 or T3 service.

Note that SONET is a different protocol than Ethernet. With some fancy bit handling, Ethernet can be formatted to be carried by SONET, T1, T3, or other digital networks. The Ethernet packets can be split up to fit the requirements of the carrier and reassembled at the other end.

Going cross-country you are using a long distance carrier called a WAN or Wide Area Network. A WAN can connect MANs together or simply connect a group of individual locations. The Internet is an enormous WAN. You can get WAN service from a variety of competitive carriers with speeds from T1 at 1.5 Mbps up to OC48 at 2.5 Gbps or even OC192 at nearly 10 Gbps.

Most WANs are TDM or Time Division Multiplexing based because that is the standard adopted by the telephone carriers that first implemented them. Since much data is now packet based using the IP standard, carriers are now offering native IP based networking connections in many areas. That means that your LAN data never changes protocol. It leaves your router as Ethernet, traverses an Ethernet WAN, and hooks to another LAN some distance away. To the IT manager it all looks like one big corporate LAN, even though a common carrier provides the link between sites.

To monitor network devices, you can use spiceworks or 10-Strike Network Monitor.

To monitor internet activities, I would recommend WFilter Enterprise.

Two words: cheap and easy. Having only one main cable connecting all of the stations together drastically reduces the time and cost of installation and makes troubleshooting particularly easy.

It all depends on a number of things. The first part is, do you want the computer to be on the same network (connecting to the Internet)? If so, plug it into the router/switch/hub with an RJ-45 (most people just call it an Ethernet cable). But if you want two computers to be able to share files (connect to each other) on a "simple network" then it might depend on what kind of hardware you have. If you have a parallel slot, use that if you just have two computers. If you don't have a parallel slot then you should hopefully have some sort of Network Interface Card (NIC) and there will be an RJ-45 slot. If you have Windows, you'll have to do a setup with the local network wizard (or something like that). With Linux or Mac, use Samba. Hope this helps, and hope I didn't mess something up. -Zofc

A peer-to-peer network is easier to set up.