Chapter 11

This Article is all About inter-network operating system (IOS) in this chapter it talks about the role of IOS in the network. this include the security, addressing, interface, routing, its Quality of Service and of course it management resources. then we have the IOS hierarchical structure it describes the CISCO LOS modal in different mode. the mode prompt a command line interface or the CLI where various commands are executed to establish a good configuration, communication, information, operation, status of ports of a  device. accessing IOS on the device by two ways we have first the telnet Access and secondly the serial ports.Now CLI is important in basic routering and switching configurations some of the various uses of the CLI is its ability to limit device access, encryption, the ability to set your own password in a console mode.adding a login banner. and when managing IOS is a factor its ability to backup files via text file and restoration configuration. CLI also can identify a specific router in a network, Configuring router Ethernet interface and description of a router. in this article also tackles about the selecting, applying, and verification of an appropriate addressing in a particular host parameters to a host by testing local host TCP/IP by pinging if its properly installed and working. trace steps by using ipconfig command to verify host parameter and for assignments, testing connectivity in gateway and local host assignment. Use ping command to determine ip protocol is OK to NIC and test host if its actively communicating across the LAN area and communicate across the inter network to a given remote host. That is all about in this chapter 11 which is the Configuration and testing the network by a series of command using what we called the Command line. this is a great way to practice a command line prompt to be able to know the different command in networking.

IOS -  is a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system.
CLI - or command line interface which enable, configure, process, address to a network device using a series of commands.