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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
It depends. For online use, some sites require payment of membership fee before use, some charges fee per transaction and some charges free. This is exclusive of cost incurred by the user/s from their network provider.
What is the valid IP host for the network ID 190.254.0.0?
If you aren't subnetting, then the host range for this network would be:
190.254.0.0 - 190.254.255.255
The above shows the IP address range, but not all addresses would be usable (mostly the first and the last addresses would probably be not assignable to a device).
The router will install both routes in the routing table and load balance between the two.
No, Windows normally assumes that the network uses DHCP and it attempts to find a DHCP server on the network. If it cannot find one it will eventually assign a 169.x.x.x address but it will not assign the gateway or the DNS addresses when it assigns the 169.x.x.x address.
What problems does the homegroup troubleshooter allow you to resolve?
The homegroup trouble shooter helps you resolve problems with viewing computers or shared files in your homegroup.
Is MAC filter effective in protecting Wireless?
If you are using a "white list" certain MACs are permitted, it's very hard to beat it.
What is the working principle of DNS server?
To resolve host names to IP address eg wiki.answers.com to 192.41.64.63 or YourComputerName to 192.168.1.XX
If it wasnt for this to access a website you would need to type the IP address of the site or to access a share on a computer in stead of typing \\computername you would need to type the computer IP
DNS also does the opposite IP to Hostname so you can do a lookup on an IP address and find out the hostname
for example if you go in to command promt and do tracert yourcompIP it will say tracing route of YourCOmputer Name [YourCOmputerIP]
What is the help command in the cisco ios?
The question mark. It can be used in different contexts, for example:
?
(list all commands that make sense in the current context)
s?
(list all commands that start with s)
show ?
(list what options you have as the second word after the SHOW command, for example, show ip, show running-config, etc.)
How can you get an Apache server to listen on port 81 instead of port 80?
Edit the ports.conf file and change the line
listen 80
to
listen 81
which is, all in all, remarkably straightforward.
Where can one learn more about network optimization?
One can learn more about network optimization by looking online at various tutorials that exist about it. It is also worth going on a training course if one can be found in the local area because personal interaction with the trainer is the best way to learn.
Where can one buy a 4 port KVM switch?
One can purchase a 4-port KVM switch at most websites or stores that sell electronics. One can go to a Best Buy store or one can go to the Newegg website.
Is an Ethernet splitter the best way to connect to home networks?
Ethernet splitters are great if you want two people to connect to the same Ethernet port. Home networks should be as long as all the computers in the network are hooked up to the internet, not necessarily the same port.
If someone has access to the data stream from your computer to any servers you connect to, then yes (in the example of wireless connections). Although it's unlikely they can control your computer, it can see what information you are sending or receiving.
You can prevent someone accessing your computer by using a simple firewall, and to prevent someone accessing the data stream, you should use an encryption key. The instructions of how to do so should be on the software manufacturer's website. (microsoft = microsoft.com) Use SSL connections when available to ensure security. And never place personal information over a non-secure connection. The way to identify a secure connection is simple, most web browsers have a logo meaning security is enabled. It is usually a closed padlock. These icons will be found either on the address bar or on the status bar.
IP address
Number that uniquely identifies each computer on the internet. A computer's IP address may be permanently assigned or supplied each time that it connects to the Internet by an Internet service provider. In order to accommodate the extraordinary growth in the number of devices connected to the Internet, a 32-bit protocol standard, known as IPv4, began to be replaced by a 128-bit protocol, IPv6, in 2000.
Source: Answers.com
Internet program
Which type of broadband technology is refered to as catv?
This term is a bit ambiguous: CatV stands for Category 5, or Cat5 a type of cable that can carry 155 Mbit/s (1000BASE-TX), it could also mean Cable Television.
Many consumer routers are actually NAT switches which is a hybrid device. If you want seemless connectivity then the NAT switch secondary device must be configured as a ROUTER and attached directly to your Gateway device. The Gateway device could be a ADSL Modem, Cable Modem, NAT Router (Switch) etc
Neural networks (or connectionist models or backpropagation models/networks) are computer simulations of neurons in the human brain. This can mean a group of neurons of about 100 neurons up to millions of neurons. The models are not complete representations of the neurons found in the human body, but simplified and math-constrained concepts of those.
Neural networks are used to discover more about the inner workings of the human brain and most often in case of memory/learning simulations. A good book to learn about these is Connectionism and the Mind. However some knowledge about the brain is necessary.
What is the difference between computer networks and interconnection networks?
Basic answer: # A computer-network is group of computers and rather simple. You need no routing protocols. Single point to access or leave the network from the internet.
# Interconnection networks are two or more networks who are connected by one or more routers. You need routing protocols to determine what path to use. examples: # A Local Area Network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart. # Wide Area Networks (WANs) connect larger geographic areas, such as Florida, the United States, or the world. Dedicated transoceanic cabling or satellite uplinks may be used to connect this type of network.
