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Local Area Network
Questions concerning the setting up, troubleshooting and operation of wired LANs used by businesses and other organizations
4,003 Questions
Why use the more than one subnet in one ip address?
You don't use more than one subnet in one single IP address. The IP address indicates what subnet you are in and a client may belong to only one subnet at a time.
An IP address range may indicate the presence of more than one subnet, however. This is done to split up a larger network into multiple smaller networks.
Is the internet be descrided as a circuit switched network or packet switched network?
The Internet is packet switched, meaning each individual packet is routed from the source to the destination separately, and possibly through different paths.
An example of a circuit-switched network would be the telephone network, where a connection from one end to the other is created and maintained until the call is disconnected.
Start->Run->cmd, press enter. In the cmd window type ipconfig and press enter. You will see all required information for all network adapters connected to your computer.
What does invalid license on your MP3 player mean?
There is one of two reasons that you would get an invalid license error on your MP3 music file: First, if you download MP3's or other multimedia types from a gnutella (filesharing) or torrent, and it requires a "special" license, chances are the license requires Window's Media Player to download some advertisement that is gutted with spyware, adware, or other malicious code. Trojan horses are the worst, and once you got it, it's almost impossible to get rid of it.
The other common reason that MP3's experience "license" errors has to do with a new concept called Digital Rights Management. This is encountered most typically in one of two ways: First, Sony MP3 players (and some others) require that you load your music to the player via Atrac's software interface. Atrac encodes the mp3's so that they will now only play on your mp3 player. If you try to share the song with a friend by copying it to your friend's computer, the song will not play, because the Sony MP3 device that it was written too is not present. Second, Apple Itune's Media Software also incorporates DRM protection. In most situations, sharing music, or copying music is a violation of RIAA's ownership policies. Itunes tries to transparently protect it's customers from violating RIAA policies by encoding music that is downloaded from the Itunes store. According to Itunes own protective policy, you can "authorize" up to 5 devices that your music will play on. If your music is not on one of these 5 devices that you registered with Itunes online music store, it won't play.
How canbe connected two computer without LAN connection?
Sure! IP (Internet Protocol) is simply the most common addressing scheme in use today.
Imagine you and one or more friends are exchanging postal letters. In order for your letter to be delivered, the envelope must have a destination address and in order for your friend(s) to reply, it must have a return address. Inside the envelope it is your letter itself.
This is precisely the way computer communications works. The computers exchange data packets ("letters") and each packet has an address ("address") in it's header ("envelope") that indicates where it's going and one that shows where it's coming from.
Just as the post office can't deliver a letter to your friend without the address, a computer cannot exchange packets without addresses. But so long as the computers involved are all using the same method to uniquely identify themselves, be it an IP address, NetBIOS name, MAC ID or other scheme, they can communicate.
Switched Ethernet
Do different services of the internet feature different transfer protocols?
Yes. Three examples are:
- HTTP - HyperText Transfer Protocol (used to transfer web pages)
- FTP - File Transfer Protocol (as it says)
- SMTP - Simple Mail Transfer Protocol (supports some functions of the email system)
These are all service layer protocols. Underpinning these are transport layer protocols, principally
- TCP - Transport Control Protocol (used for most services)
- UDP - User Datagram Protocol (used for services and internal internet mechanisms that favor unimpeded delivery over assurance, order, and/or control of data flow)
There are layers of protocol below this; the immediate one is the internetwork layer, which allows the higher layers to work seamlessly over multiple interconnected network media such as WiFi, Ethernet, optical fiber, etc. Below that are the protocols that correspond to the specific media.
Which protocol is used to set the IP address?
The older protocol for this purpose was BOOTP, but modern addressing LAN schemes today will use DHCP.
It depends on how the DHCP server scope options are configured. At a minimum, DHCP uses supplies the following:
- Adaptor IP Address
- Subnet mask
- Default Gateway
- Primary/secondary DNS server addresses
It might also supply some other routing options, including WINS server addresses, etc.
Why do you setup default gateway server address?
First, you have to know what the default gateway address for your LAN segment is. This might mean talking to your network administrator.
Usually this address is set automatically by the DHCP protocol, so you don't need to do anything. If you are using a set of static addresses, then you can specify the default gateway address in one of the Windows network dialog boxes. For Unix/Linux, the 'ifconfig' command allows you to set the default gateway address.
For server 2008 (including Server 2008 Core) use the netsh command to set the default gateway address (if not using DHCP).
What feature allows the switches to pass VLAN traffic between switches?
vlan trunking protocols. eg :802.1q ,ISL
Is a device that manages traffic between two networks?
Most of the time you use a router between two networks. You can also use a bridge but bridges are most likely software based. Routers are hardware based or "appliances".
The denied MAC address are statically configured on the port
What is the communication is the virtual communication of two OSI layers on different machines?
NETWORK LAYER
When a trimmer capacitor has maximum distance between the plates will the capcitance be at maximum?
No it is the opposite. The closer the plates are together the higher the capacitance. This is given by the forumua: C = [(2.2479 x 10^-13) x K x A] / d where d is the distance between the plates. Which means that C is inversely proportional to the distance between the plates.
To enable aquatic mammals to communicate with each other?
Sorry. I couldn't resist playing on the typo, 'porposes'.
A local area network (lan) is used to connect two or more computers in close proximity to each other -- usually in the same building or campus -- so that they can share files, applications and resources such as printers, file servers and Internet connections. As opposed to a wide area network (wan) which connects computers over a broader geographical area.
Think of them intercom and long-distance telephone systems for computers
What is a global network of linked computer networks?
The internet, it is one large network that uses diffrent connection mediums to connect all computers across the world. Wheter they are in their own private network or not.
Cat6 is the current standard for new installations of ethernet cable. Depending on the space and certain building codes you need to decide between Plenum (CMP) or Riser (CMR). The difference being Riser cable is more durable, but puts out toxic fumes when caught on fire, so it is not suitable for spaces with open air flow. Dropped ceilings are generally considered Plenum spaces so therefore require plenum cable.
TCP-IP Protocol is how computers can connect to each other and the internet. The TCP (Transmission Control Protocol) is the the protocol which guarantees delivery of messages from the pc, and receives them too. The IP (Internet Protocol) is what the computers use as an addressing scheme (like a home address) its format is 4 series of numbers separated with dots, the numbers are between 0 and 255. eg, 192.168.2.1 - 192.168.2.255
