Chapter Two Flashcards
Kernel
the portion of the operating system that interacts directly with computer hardware
Shell
the portion of the operating system that interfaces with applications and the user
Command-Line Interface (CLI)
a user interface to a computer operating system or application that depends on textual commands being entered by the user
Graphical User Interface (GUI)
a user-friendly interface that uses graphical images and widgets, along with text, to indicate the information and actions available to a user when interacting with a computer
Telnet
a non-secure network service that supports CLI access to a remote host. It also ca be used to verify the application later software between sources and destination stations
Firmware
permanent software programmed into ROM memory
Cisco Internetwork Operating System (IOS)
generic term for the collection of network operating systems used by Cisco networking devices
Console
term used to describe data transfer that requires the establishment of a virtual circuit
Secure Shell (SSH)
a protocol that provides a secure remote connection to a host through a TCP application
User EXEC Mode
the limited CLI mode where the commands available to the user area a subset of those available a the privileged level. In general, use the user EXEC commands to temporarily change terminal settings, perform basic tests, and list system information
Privileged EXEC Mode
an IOS administrative level mode that supports access to configuration
Global Configuration Mode
a mode used to configure global parameters to enter other configuration submodes, such as interface, router, and line configuration submodes
Ping
a troubleshooting tool used to verify network connectivity by sending a packet to a specific IP address and waiting for the reply
Traceroute
a command on many computer operating systems that discovers the IP addresses and possible hostnames of the routers used by the network when sending a packet from on computer to another
Switch Virtual Interface (SVI)
a virtual interface for which there is no associated physical hardware on the device. An SVI is created in software. The virtual interfaces are used as a means to remotely manage a switch over a network. They are also used for routing between VLANs