CCNA 1 Chapter 2 Flashcards
Router
Forwards data packets to and receives data packets from the Internet.
Switch
Connects end devices using network cables.
Wireless access point
Consists of a radio transmitter capable of connecting end devices wirelessly.
Firewall appliance
Secures outgoing traffic and restricts incoming traffic.
Kernel
It’s in charge of the interaction of the hardware and the OS.
Shell
It’s in charge of the interaction of the user and the applications.
Where is stored the Cisco’s IOS?
Flash memory
When the device boots up, where does the Cisco’s IOS run?
RAM memory
What is the console port?
A port that technicians use to setup a Cisco Device, when it’s the first time or when the device had a problem. The technician needs to use a special cable to connect an external computer to the device. It has tools like debug, error messages and startup.
What is Telnet?
It’s used to configure a Cisco Device using a remote CLI session over the network. To do this the device should be able to connect to the network.
What is SSH?
Secure Shell, it has the same purpose as Telnet, but this more secure.
What is AUX port?
Used to configure for the first time the device using a telephone dial up connection. It has the same purpose as console port but with no tools like debugger.
Hierarchical order of modes in Cisco IOS, from basic to specialized.
User executive mode (User EXEC)
Privileged executive mode (Privileged EXEC)
Global configuration mode
Specific configuration mode
How to differentiate a User EXEC from a Privileged EXEC in the CLI?
User EXEC = switch>
Privileged EXEC = switch#
Command used to change from User EXEC to Privileged EXEC
enable
Command used to change from Privileged EXEC to User EXEC
disable
Convention of IOS command prompt: boldface
Command and keyword that must be enter literally as shown.
Convention of IOS command prompt: italics
Arguments from which you supply the value.
Convention of IOS command prompt: [x]
Optional element.
Convention of IOS command prompt: {x}
Required element.
Convention of IOS command prompt: [x {y | z}]
Required choice with optional argument.
Used to get help on the Command Prompt
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