What two facts are true when a device is moved from one network or subnet to another? (Choose two.)

The Layer 2 address must be reassigned.
The default gateway address should not be changed.
The device will still operate at the same Layer 2 address.
Applications and services will need additional port numbers assigned.
The Layer 3 address must be reassigned to allow communications to the new network.

ccna exploration 1 chapter 7 Exam Question And Answers 

What two facts are true when a device is moved from one network or subnet to another? (Choose two.)