At which OSI layer is a logical path created between two host systems named VE1 and VE2 on

A.Layer two

B.Layer four

C.Layer one

D.Layer three

A.Layer 3

B. Layer 4

C. Layer 2

D. Layer 5

A.Layer 1

B.Layer 5

C.Layer 6

D.Layer 7

A.Transport

B.Presentation

C.Session

D.Application

A. Application Layer

B. Presentation Layer

C. Data Link Layer

D. Physical Layer

A.Layer 2

B. Layer 3

C. Layer 4

D. Layer 7

Which OSI layer does a Router operate at？

A．the Physical Layer

B．the Data Link Layer

C．the Transfer Layer

D．the Network Layer

A.data link

B.network

C.physical

D.transport

A.data link layer

B.application layer

C.access layer

D.session layer

E.network layer

A.application layer

B.session layer

C.transport layer

D.network layer

E.datalink layer

F.physical layer