cisco IOS Basic Config

line console 0 : global configuration that changes the context to console configuration mode.
line vty 1st-vty 2nd-vty : global config that changes the context to vty configuration mode for the range of vty lines listed in the command.
login : linke (console and vty) configuration mode. Tells IOS to prompt for a password (no usrname).
password pass-value : line (console and vty) config mode. Lists the password required if the login command(with no other params) is configured.
interface type port-number : global command that changes the context to interface mode - ex. interface Fastethernet 0/1.
shutdown/ no shutdown :Interface commands that enables/disables the interface.
hostname name : global command that sets this switches hostname which is also used as the first part of the switch;s command prompt.
enable secret pass-value : global command that sets the automatically encrypted enable secret password. The password is used for any user to reach enable mode.
enable password pass-value : global command that sets the clear text enable password, which is used only when the enable secret password is not configured.
exit : moves back to the next higher mode in configuration mode.
end : exits configuration mode and goes back to enable mode from any of the configuration submodes.
ctrl+z  : this is not a command, but rather a two-key combination that together do the same thing as the end command.
no debug all/ undebug all : enable mode EXEC command to disable all currently enabled debugs.
sow process : EXEC command that lists statistics about CPU utilization
terminal monitor : EXEC command that tells Cisco IOS to send a copy of all syslog messages, including debug messages, to the Telnet or SSH user who issues this command.
reload : enable mode EXEC command that reboots the switch or router.
copy from-location to-location : Enable mode EXEC command that copies files from one file location to another. Locations include the startup-config and running-config files, files on TFTP and RPC servers and flash memory.
copy running-config startup-config : Enable mode EXEC command that saves the active config, replacing the startup-config file used when the switch initialisex.
copy startup-config running-config : Enable mode EXEC command that merges the startup config file with the currently active config file in RAM.
show running-config : Lists the contents of the running-config file.
write erase/erase startup-config/erase nvram:   : All three enable mode EXEC commands erase the startup config file.
setup : Enable mode EXEC command that places the user in setup mode, in which Cisco IOS asks the user for input on simple switch configuration.
quit : EXEC command that disconnects the user from the CLI session
show system: running-config : same as show running-config command
show startup-config : lists the contents of the startup-config file.
show nvram:startup-config/ show nvram:   : same as show startup-config command.
enable : moves the user from user mode to enable(privileged)mode and prompts for an enable password if configured.
disable: moves the user from enable mode to user mode
configure terminal : enable mode command that moves the user into configuration command.

Important interview questions

Below are few important interview questions which should be answered thoughtfully and diplomatically.

1. If I were to get feedback from your manager, what would be the three things he would say.
2. What are your three week points or what are the three improvement areas would you like to work on.
3. Tell me something about yourself.
4. What were the projects you have been engaged in.
5. Tell me brief about any project you liked the most and why.

Few of the video questions!!

What is interlace scanning ?
What is progressive scanning ?
what is a pixel ?

What is HD and SD?

What is the maximum resolution in HD ?

more questions will follow !!!!!

Answers coming soon...