9) What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet? a) NAT b) static c) dynamic d) PAT 10) What is a stub network? a) A network with more than one exit point b) A network with more than one exit and entry point c) A network with only one entry and no exit point d) A network that has only one entry and exit point 11) Where is a hub specified in the OSI model? a) Session layer b) Physical layer c) Data Link layer d) Application layer 12) To back up an IOS, what command will you use? a) backup ios disk b) copy ios tftp c) copy tftp flash d) copy flash tftp 13) What is the main reason why the OSI model was created? a) To create a layered model larger than the DoD model b) So application developers can change only one layers protocol at a time c) So different networks could communicate d) So Cisco could use the model 14) Which command is used to upgrade an IOS on a Cisco router a) copy tftp run b) copy tftp start c) config net d) copy tftp flash 15) The protocol data unit (PDU) encapsulation is completed in which order? a) Bits, frames, packets, segments, data b) Data, bits, segments, frames, packets c) Data, segments, packets, frames, bits d) Packets, frames, bits, segments, data 16) Which class of IP address provides a maximum of only 254 host addresses per network ID? a) Class A b) Class B c) Class d) Class D c) Class E 17) Which of the following is a layer 2 protocol used to maintain a loop free network? a) VTP b) STP c) RIP d) CDP