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The book is about an introduction to computer networks. It is abit shallow as it only deals with the basics.
Typology: Study notes
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Study of basic network commands and Network configuration commands. IPCONFIG IPCONFIG\ALL NSLOOKUP PING TRACEART Look at how to use these commands in the CommandPrompt ● IPCONFIG –shows the ip configuration details The LAN network for the above computer has not been configured using the ethernet adapter rather through WIFI LAN adapter. The ip address is 192.168.100.
Subnet mask is 255.255.255.0( Basically to determine neighbours in the network,i.e enables easy communication for computers within the same LAN ) default gateway is 192.168.100. NOTE: To contact other computers which are not within the LAN,the computer needs to hit the router first THUS the DEFAULT gateway is the IP address of the first router this computer would hit when sending data to a different network Ipconfig accesses information in the layer 3(network layer) which uses ip addresses. ● IPCONFIG/ALL Accesses information in the Data Link Layer(layer 2) e.g the MAC address which is used in the Data Link Layer. The physical or mac address of the computer above is DC-F5-05-F6-D6-E ● NSLOOKUP Displays information such as ip address of a name address you give. from Domain Name System (DNS) name servers.
Our computer sends 4 packets and if the hosts sends back the acknowledgment for all the 4 packets then it is reachable. Try: Reach a non existing computer e.g ping 10.18.35. You can also ping using the name address of the computer for instance ping www.instagram.com ● TRACEART Tracert is a command which can show you the path a packet of information takes from your computer to one you specify. It will list all the routers it passes through until it reaches its destination, or fails to and is discarded. In addition to this, it will tell you how long each 'hop' from router to router takes. Example : tracing the route which packets from my computer will flow from to the w3schools.com
6.Configure the PC’s. ● On PC0 click on it >>Desktop>>ip Configuration and enter type an IP ADDRESS ,SUBNET MASK and DEFAULT GATEWAY.
Follow the same steps for the rest of the PC’S
7.We ca now try to check the connection using simple PDU From PC0 to the router. From PC3 to the router From PC0 to PC3.