The OSI Reference Model Answers

When a router fails to send messages in a timely fashion, this is a problem of the _____.

network layer

application layer

transport layer

data-link layer

What is the difference between the ISO and the OSI?

The ISO created the OSI.

The ISO exists one layer above the OSI.

The OSI created the ISO.

The OSI exists one layer below the ISO.

The OSI is a reference system that is used by most types of technicians EXCEPT _____.

technical illustrators

computer scientists

All technicians have agreed to use the OSI as a standard reference.

engineers

In this context, the word “session” refers to _____.

The period of time between the initialization and completion of a given task.

The period of time between opening and closing a web browser.

The period of time during which the user is on the phone with the IT department.

The period of time between connecting and disconnecting as two computers communicate.

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