Routers are considered Internet Layer $($Layer $3)$ devices and thus typically implement: $[$Select all that apply$]$

Routers are considered Internet Layer $($Layer $3)$ devices and thus typically implement: $[$Select all that apply$]$

Transport Layer functionality $($Layer $4)$

Internet Layer functionality $($Layer $3)$

Data Link Layer functionality $($Layer $2)$

Physical Layer functionality $($Layer $1).$