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Router works in Network Layer of OSI model
A router
The IP address of course! Think about it. It's on the network layer, It is unique, and it's assigned to every device on the internet!
network layer
The Network Interface cards
layer 1 deal with physical connectivity of network device.Most common problems related to Layer 1 as follow: -device power off -device power unplugged -loose network cable connection -incorrect cable type -faulty network cable
• The device will still operate at the same Layer 2 address.• The Layer 3 address must be reassigned to allow communications to the new network.
False - a repeater is a simple layer 1 device. It would not have a need to operate at the network layer.
Node
hub
Router is a Layer 3 (Network Layer)device that checks packet's IP Address at input interface & routes them to interface connected to destination network if available.
ROUTER!