Explain network configuration files in /etc/sysconfig/network-scripts.

41.Explain network configuration files in /etc/sysconfig/network-scripts.
Ans.
1. We can use the files in this directory to set the parameters for the hardware and software used for networking.

2. These scripts are used to enable network interface and set other network-related parameters.

3. Ifcfg-networkinterfacename
Red hat specifies a separate configuration file for each network interface.
In typical Red hat install, we have many different network interface configuration files that all follow the same basic syntax and format.

4. ifup and ifdown
These files are symlinks to /sbin/ifup and /sbin/ifdown, these scripts are called when the network service is started or stopped.
We call the scripts with the name of interface that we want to bring up or down.
For instance, to bring Ethernet interface down and up again after boot, we will type command
Ifup eth0
Ifdown eth0

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