Computer Networking

The short answer is, it depends. Many laptops come with a network port in the back or on the side that can be used to connect to a wired network. The port looks like a telephone jack except it has 8 pins instead of 4. If your laptop doesn't have a port, you can buy a network card that plugs into one of the card slots in the side. In either case you'll need a CAT5 or CAT6 standard network cable to connect the laptop to the network hub. Hope that helps. you can also install a wireless access point onto your network

Networks are comprised of software, hardware, a connection source and client devices. Software issues the commands needed to run the network. The hardware includes network cards, routers and switches. Connection sources are what the client uses to hook up with the internet. Networks won't operate without them. Client devices are the equipment a client will use to connect to the network.

In the wireless properties choose "compatibility mode for G" or something like that. If you do so your router will allow both types of wireless cards G and N.

255.0.0.0 for a class A

correct. but why? well, 10.10.0.0 is a class a network and all class "a" networks use a default subnet mask of 255.0.0.0. the range of class "a" networks is 1-126.

What is ping?

Ping is a simple command line network tool that you can use to verify your connectivity to a network.

How does ping help me?

Ping will allow you to quickly determine the status of your connectivity on the network. Ping another computer on your local network to determine if your network connection is functioning properly, then ping an Internet resource to determine if your connection to the outside world is functional.

Why should I ping?

Ping will help you determine if your network connection is completely failed, or if you are only isolated from specific networks. For example, if you are suddenly unable to browse web pages, you may have been disconnected from the Internet but still be connected to your local network. You can make this determination by pinging the appropriate local or remote addresses.

Which website should I ping?

You should ping popular web sites that are known to always be there. For example, Yahoo.com or Google.com. These sites have a high level of redundancy in their networks and are most likely to respond.

Should I ping a domain?

Pinging a domain, such as google.com, will test your DNS service. DNS will translate the domain name to an IP address. If your DNS server is unreachable, you will not be able to browse the Internet using standard URL's such as www.yahoo.com

Do I need to ping the same URL more then once?

If you are able to access network resources without any trouble, there is no need to ping, otherwise you might want to run multiple ping tests against the same resource until you can determine that it is available.

Examples:

* ping <computer name>

** this will ping another computer on your local network by name, which will test your lmhosts, WINS, etc.

* ping 192.168.1.1

** this will ping another computer using the IP address of the other machine.

* ping www.google.com

** this will ping a computer by dereferencing it's domain name, and will test your DNS.

* ping /?

** this will display the options for the command

The main function of a phone is to communicate with people, but a phone has multifarious functions. The phone allows people to do many things such as text, find directions, Call, go on the internet, take pictures, have access to the internet, go online as in social networks.

complete operating system that works on a desktop computers

A local application is stored on a computer for use on that computer. A network application is stored on the server/host computer for use on all computers on that network and by all users
Local applications are stored on the local hard disk and they run on the computer where they are installed.

because in the data link layer two routers communitate directly via a physical channel , whereas at the transport layer this physical channel is replaced by the entire subnet. In the data link layer ,it is not necessary for a router to specify which router it wants to talk to each outgoing line uniquely specifies a panicular router . In the transport layer explicit addressing of destinations is required.

coaxail cable have 3 layers

its less interupted by Intersigal interference(ISI) and EMI compared to twisted cable

furthur its much more thick and used in normal TV's

price is 10x of twisted but it worth !

because the speed is much much much faster

In a wired medium, data travels as electrical signals (or optical, in the case of fiber optics), through glass. In a wireless medium, no wires are used, and the signal travels as an electromagnetic wave through the air.

RJ-45

On windows open a command prompt. It should be under applications, then accessories. Then type ipconfig and hit enter.

On Linux open a terminal and type ifconfig and hit enter.

Another possibility is to just search Google for what is my ip and click on one of the first few links.

your ip will take the form of X.X.X.X where X is a number between 0 and 255

adding 50 meters on the length of the network

bun seeds

When you connect to the network is normally the time that an Internet Protocol address is created or assigned to your computer

Dual Core is better as it has two processing cores, Higher Clock Speed, Bigger FSB, Bigger Cache and it is built for multitasking but it does not mean that Centrino is bad as it is designed for NOTEBOOK Computer and does not give lower performance.

Guy above me is wrong

He asked about Centrino duo which IS a dual core. The Centrino platform is going to be a LOT faster than the Pentium Dual-Core. Centrino means you're getting a Core 2 Duo processor, Intel chipset, and Intel wireless. Core 2 Duo processors are much faster than Pentium Dual Core processors.

These 2 guys above me are wrong... na just kidding i just really wanted to say that :D

Use a router.

Connect your cable or DSL modem to router, router to hub. Some cable and DSL modems have built-in capabilities to act as a router and perform Network Address Translation (NAT). The router can assign separate IPs for each computer, but all will access the Internet through the 1 IP address assigned to the port of the router/modem connected to the Internet service provider's network.

If you are using a slower dial-up modem, the computer connected to the Internet using the modem can have 'Internet Connection Sharing' turned on. This computer will connect to other computers in your home using a hub/switch. The other computers will use the modem connected computer as their Default Gateway.

Alternatively... We can have same ip address on two or more computers in the SAME network. They should be in same collission domain. Let their MAC address be same first & then assign them same ip address. You can do it by installing a cheap network hub. Watch my associated video on www.metacafe.com/channels/austinium2002/

The function of a network router is to rout signals from one computer with another, while allowing multiple computers to be networked together as the same time.

availble ip address for 240.248.252.0000

DHCPRELEASE

Mobile ad hoc networks refer to the networks that cellphones and other mobile devices are connected to. Laptops and computers may also connect to such networks by means of tethering to a mobile device.