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63 Cards in this Set
- Front
- Back
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What are the four types of memory in the router?
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RAM
ROM NVRAM FLASH |
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What are the three most common ways of accessing the CLI environment?
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Console, Telnet or SSH, AUX port
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What is another name for a console session?
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CTY Line
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When is the console used?
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Initial configuration, diaster recovery when remote access is unavailable, password recovery
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What two critical things are stored on ROM?
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Diagnostics and bootstrap information
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Does Telnet require active networking services on the device?
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Yes
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What is vty?
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Virtual teletype interface, which is the kind of session TELNET sets up. Requires a ps=assword as a minimum.
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Where is startup configuration found?
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NVRAM
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Where is running configuration found?
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RAM
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Where is internet operating systems?
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FLASH
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When is the AUX port used locally?
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When there are problems with using the console port
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Does the AUX port require networking services?
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No, but it does require a modem to be hooked up to the router and a terminal emulation program on the conmputer
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What are the two types of software on network evices?
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Operating system and configuration
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When are commands parsed?
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During bootup from the startup-config file, or when commands are entered in the CLI
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What are the two configuration files in a Cisco network device?
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Running and startup
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Describe user executive mode:
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Lowest level (1), very limited, basically only "viewing" commands; Router>
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Describe priviliged executive mode:
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Level 2 Similar to "root" in UNIX or "Admin" in Windows, offers access to the entire IOS command structure; Router#
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Global configuration mode:
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Commands apply to the entire router; Router (config)#
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Other specific configuration modes:
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Commands only apply to that particular routing process; Router(config-mode)#
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What are the four parts of the Basic IOS Command structure?
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Prompt, command, space, keyword or argument
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IOS Conventions: Boldface
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Commands and keywords that are entered literally
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IOS Conventions: Italics
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User supplied arguments
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IOS Conventions: [X]
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Square brackets enclose an optional keyword or argument
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IOS Conventions: |
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A choice within an optional or required set of keywords or arguments
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IOS Conventions: [X|Y]
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Optional choice
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IOS Conventions: {X|Y}
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Required choice
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How do you access context-sensitive help?
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? at any prompt; sh? gets a list of all commands that begin with sh; a question mark after a command shows options, keywords or arguments
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What are the three types of error messages?
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Ambiguous command, incomplete command, incorrect command
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Hot keys/shortcuts: Tab
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Completes partial command name entry
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Hot keys/shortcuts: Ctrl-D
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Erases the character at the cursor
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Hot keys/shortcuts: Ctrl-K
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Erases all characters from the cursor to the end of the command line
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Hot keys/shortcuts: Esc D
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Erases all characters from the cursor to the end of the word
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Hot keys/shortcuts: Ctrl-U or Ctrl-X
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Erases all characters from the cursor to the beginning of the command line
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Hot keys/shortcuts: Ctrl-W
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Erases the word to the left of the cursor
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Hot keys/shortcuts: Ctrl-A
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moves the cursor to the beginning of the command line
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Hot keys/shortcuts: Ctrl-B and Ctrl-F:
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Left and right arrow keys
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Hot keys/shortcuts: Ctrl-E
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Endo of command line
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Hot keys/shortcuts: Up-arrow or Ctrl-P
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Recent commands
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Hot keys/shortcuts: Ctrl-R, Ctrl-I, Ctrl-L
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Redisplays the system prompt and command line after a console message is received
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Hot keys/shortcuts at prompt: Enter key
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Displays next line
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Hot keys/shortcuts at prompt: Spacebar
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Displays next screen
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Hot keys/shortcuts (break keys): Ctrl-C
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When in any configuration mode, ends the configuration mode and returns to privileged EXEC mode. When in setup mode it aborts to the command prompt.
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Hot keys/shortcuts: Ctrl-Z
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When in any configuration mode, ends the configuration mode and returns to privileged EXEC mode
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Hot keys/shortcuts: Ctrl-Shift 6
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All-purpose break sequence. Used to abort DNS lookups, traceroutes, pings
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What can the show command provide?
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Version, processes CPU, protocols, running-config, memory, stacks, buffers, flash, interface[s], startup-config
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Where does service password-encryption apply?
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Passwords stored in configuration--not when they are sent over the media. The command to start this (it is not enabled by default) is "service password-encryption"
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What are some good practices when it comes to banners?
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Use legal warnings, never use welcomes, should warn that only authorized users are permitted. MOTD is frequently used for legal messages
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Commands: reload
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Restarts the device without saving changes
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How do you test the IP stack?
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Ping 127.0.0.1; ! reciept of packet, . timeout, U unreachable
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What is a network baseline?
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A process for studying the network at regular intervals to ensure that it is working as designed, by having several reports over a period of time establishing the health of the network and then comparing new reports to that
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What does the arp command do?
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Sends out a broadcast requesting MAC addresses from all the IP addresses in a local network.
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Which command turns on a router interface?
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No shutdown
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What is the default shutdown/no shutdown state?
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Shutdown
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What is the purpose of the IOS enable secret command?
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Allows you to input a password that will be encrypted
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What command will display statistics for all interfaces configured on a router?
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Show interfaces
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What command lines will require a password to establish a console session with the router?
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Router(config)#line con 0
Router(config-line)#login Router(config-line)#enable password CISCO |
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What type of cable is used to initially configure a router?
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Rollover
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What do router use to select best paths for outgoing data packets?
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Routing tables
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What is setup mode?
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Setup mode allows you to configure a router by answering a series of questions posed to you.
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What is the proper configuration for terminal emulation software to configure a router?
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Bits per second, 9600
Data bits, 8 Parity, None Stop bits, 1 Flow control, none |
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Commands to copy a configuration file to a TFTP Server:
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enable
copy runt tftp 192.168.23.5 router-config |
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Commands to permit access to five virtual terminals:
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line vty 0 4
login password cisco |
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What are the three types of CLI Help?
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Context-sensitive
Command syntax check Hot keys and shortcuts |
