In this situation Network Layer may not be required. Data Link Layer can handle communication process.
If two devices are communicating from different networks then Network Layer a is must. In this situation Data Link Layer is not enough for completing the communication process as it lacks Routing ability which is the primary function of Network Layer.
distribution
usally Firewalls config for comunicate to another network Firewall located in edge of network,firewall is a roter or a pc with a special software.
That would be the network card or modem.
network
No, a simple home network can be configured to share data and devices without connecting to the internet.
A modem
deafult getway
Servers
Servers
distribution
default gateway
The following components required to meet a network specification. 1. The network devices like switch, router, cables and other all network devices.
usally Firewalls config for comunicate to another network Firewall located in edge of network,firewall is a roter or a pc with a special software.
network interface card
two
That would be the network card or modem.
double-ring