This page provides answers and reading references associated with CCNA Practice Exam 1. You should probably try the exam before reading this!
1. At which OSI layer do routers operate?
Routers operate at the Network Layer of the OSI Model.
2. Enter the default subnet mask associated with a Class B IP address:
The default subnet mask associated with a Class B IP address is 255.255.0.0
3. Which of the following is not an example of a Session Layer protocol?
Of the options listed, Ascii is not an example of a Session Layer protocol
4. By what term is a Transport layer Protocol Data Unit [PDU] known?
A Transport layer Protocol Data Unit [PDU] known as a Datagram
5. Which of the following are examples of Transport Layer protocols? Choose all that apply.
Of the choices listed, TCP and UDP are transport layer protocols