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    A network layer of TCP/IP is a mix of the ____ layer and the ____ layer as outlined by the OSI reference model
    
    
    
	51. A network layer of TCP/IP is a mix of the ____ layer and the ____ layer as outlined by the OSI reference model.
    
      - Physical Layer and Data-Link Layer
 
      - Network Layer and Transport Layer
 
      - Data-Link Layer and Network Layer
 
      - Transport Layer and Physical layer
 
    
    Answer: A) Physical Layer and Data-Link Layer
    Explanation:
    A network layer is a mix of the Physical layer and the Data Link layer as outlined by the OSI reference model.