Testing the network card itself involves running a diagnostic program that is usually supplied by the vendor that manufactored the card.
For basic network connectivity you can start with the 'ping' command move up from there depending on what is found.
It will be provide the connectivity
it showing connectivity
A CNI ticket, or Container Network Interface ticket, typically refers to a request or issue related to network connectivity in containerized environments, such as those managed by Kubernetes. It may involve troubleshooting network problems, configuring network plugins, or resolving connectivity issues between containers and external networks. CNI is a specification that provides a standard interface for network connectivity in container systems, allowing various network providers to integrate with container orchestrators.
1) Network Information Center 2) Network Interface Controller
Link light
A network interface card (NIC) is a computer circuit board or card that is installed in a computer so that it can be connected to a network. Network interface cards provide a dedicated, full-time connection to the network.
types of network interface card
The host portion specifies the particular network interface's address. The network portion specifies the network address.
These are all devices called network connectivity devices. They allow a network to be either extended in range, or to add other clients/devices to the network. They have different functionality depending on what the client connection is used for.
Network Interface Card (NIC or LAN card). This card enables PC's connectivity to existing Network. NICs are nowadays Integrated onto Motherboards or can be bought seperately in form of PCI Cards.
The light indicates connectivity to the network. Light not lit - no connection to the network. The light will flash when there is connectivity.
All of the components must be at the same speed or higher - this would include all the cables, the network interface cards, and any network connectivity devices such as hubs, switches, routers, etc.