If the unitexchanged at the data link level is called a frame and the unitexchanged at the network layer level
is called a packet, doframes encapsulate packet or do packets encapsulate frames? explainyour answer.

Frames encapsulate packets. It can also be stated as Packet is encapsulated in a Frame.

Explanation:

Frame is data link layer protocol data unit. So, it is the unit exchanged in data link layer.

Packet is network layer protocol data unit. So, it is the unit exchanged in network layer.

The correlation between a frame and packet is a packet is encapsulated in a frame. That means, frame encapsulates a packet.