Ability To Communicate

The Following Elements Must have before two device can communicate

• Equipment
• Receiver
• Sender
• Message
• Protocol
• Medium

Law to Communicate

• Subnetmask for device A and device B must same. For example ; A : 255.255.255.0 and B : 255.255.255.0.

TCP/IP Utilities

• ARP - Displays and modifies the Address Resolution protocol (ARP) cache.
• Hostname - Returns the host name of the local computer.
• Ipconfig - Displays the current TCP/IP configuration. Also used to manually release and renew TCP/IP configurations assigned by a DHCP server.
• Lpq - Obtains print queue status information from computers running Line Printer Daemon (LPD) print server software.
• Nbstat - Displays the local NetBIOS name table, a table of NetBIOS names registered by local programs, and the NetBIOS name cache, a local cache listing of NetBIOS computer names that have been resolved to IP addresses.
• Netsh - Displays and administers TCP/IP protocol settings on the local computer or a remote computer.
• Netstat - Displays TCP/IP protocol session information.
• Nslookup - Checks records, domain host aliases, domain host services, and operating system information by querying DNS servers.
• Ping - Verifies configurations and tests IP connectivity.
• Route - Displays or modifies the local routing table.
• Tracert - Traces the route a packet takes to a destination.
• Pathping - Traces the route a packet takes to a destination and displays information on packet losses for each router in the path. Pathping can also be used to troubleshoot Quality of Service (QoS) connectivity.