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Q: How are hosts identified at layer 3?
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Do Hosts on different networks communicate using what type of address?

Hosts on different networks communicate using a layer-3 address (layer 3 in the OSI reference model). In the networks used today, that would normally be an IP address.


What layer describes how hosts access the physical media?

Data Link Layer


Which layer of the OSI model creates a virtual circuit between hosts?

layer 4 - transport layer


Is network protocol needed between two hosts?

A network layer is not needed if both the hosts are in the same network. A data link layer can be used in such cases.


Which OSI model layer is responsible for the termination of connections between hosts?

There are in total seven layers in OSI model . OSI model layer that is responsible for the termination of connections between hosts is session layer . Session layer is responsible for the dialog control .


When in a session layer what are the responsibilities of both hosts when sending a message?

Hub and Swithc


Which network design layer provides hosts with initial connectivity to the network?

distribution


Which layer of the tcp ip model processes requests from hosts to make sure a connection is made to the appropriate port?

Application layer


What can be identified by examining the network layer hearder?

host adderss


What can be identified by the network layer header?

destination host address


Whitch two networking are used to connect hosts to the access layer?

switch,hub.


Two networking devices that are used to connect hosts to the access layer?

A Hub or a Switch