Q2,Paper2,J14. A bridge has access to _______ address in the same network.

(A) Physical

(B) Network

(C) Datalink

(D) Application 

Answer A. 

A bridge reads the outermost section of data on the data packet,  it tells where the message is going. It reduces the traffic on other network segments, since it filters packets. Bridges can be programmed to reject packets from particular networks. Bridging occurs at the data link layer of the OSI model, which means the bridge cannot read IP addresses but  can read only the outermost hardware address of the packet. In our case the bridge can read the ethernet data which gives the hardware address of the destination address, not the IP address. Bridges forward all broadcast messages. Only a special bridge called a translation bridge will allow two networks of different architectures to be connected. Bridges do not normally allow connection of networks with different architectures. The hardware address is also called the MAC (media access control) address.