Question

Check all of the statements below about where (in the network) the network layer is implemented that are true.

a. The network layer is implemented in hosts at the network's edge.
b. The network layer is implemented in routers in the network core.
c. The network layer is implemented in Ethernet switches in a local area network.
d. The network layer is implemented in wired Internet-connected devices but not wireless Internet-connected devices.

Answer 1

The network layer is correctly identified as being implemented in hosts at the network's edge and in routers in the network core. It is not specific to Ethernet switches, which operate at the data link layer, and is present in both wired and wireless internet-connected devices. Therefore, the correct answer option is a)

Step-by-step explanation:

Regarding where the network layer is implemented, there are some correct statements.

• The network layer is implemented in hosts at the network's edge. This includes devices like your computer, smartphone, or tablet that communicate with other parts of a network.
• The network layer is implemented in routers in the network core. Routers are responsible for making decisions about which paths data should take through the network. They work at the network layer to route packets to their destination.
• The statement that the network layer is implemented in Ethernet switches in a local area network is not correct because Ethernet switches typically operate at the data link layer (Layer 2).
• The last statement stating that the network layer is implemented in wired Internet-connected devices, but not wireless Internet-connected devices is also incorrect. The network layer is agnostic to the medium of transmission and is implemented in both wired and wireless internet-connected devices.