Network

• How do you secure privileged EXEC mode access?


  By using the enable secret password command in global configuration mode.
• What command is used to verify that passwords on the device are now encrypted?


  show running-config
• What does the command no hostname do?


  It returns the switch to the default prompt.
• What is the purpose of the service password-encryption command?

  To encrypt all plaintext passwords.
• What is the significance of the delimiting character in the banner command?


  It is used to indicate the start and end of the message.
• Why is it important to have a unique hostname for each device?


  To easily identify and manage devices on the network.
• What is the maximum length for a device name?


  Less than 64 characters.
• What should be included in a strong password?


  A combination of upper and lowercase letters, numbers, and special characters.
• How do you enable user EXEC access after setting the password?


  By using the login command.
• What command do you use to specify the VTY password?


  password password
• What is the purpose of the banner message displayed on access attempts?


  To warn unauthorized personnel from attempting to access the device.
• What command is used to enter line console configuration mode?


  line console 0
• What is the command to enable VTY access after setting the password?


  login
• What is the command to encrypt plaintext passwords?


  service password-encryption
• What command is used to display the running configuration?


  show running-config
• What is the purpose of the command no hostname?


  To return the switch to the default prompt.
• What command is used to encrypt all plaintext passwords on a Cisco device?


  service password-encryption
• Why is it important to encrypt passwords in Cisco configurations?


  To prevent unauthorized access to sensitive information
• Which command would you use to verify that passwords are encrypted on a Cisco device?


  show running-config
• What is the purpose of a banner message on a network device?


  To warn unauthorized personnel from accessing the device
• How do you create a banner message of the day on a Cisco device?


  Use the command banner motd # the message of the day #
• What are the two system files that store the device configuration?

  startup-config and running-config
• What is the difference between startup-config and running-config?


  Startup-config is stored in NVRAM, while running-config is in RAM
• How do you save changes made to the running configuration to the startup configuration file?

  Use the command copy running-config startup-config
• What happens if the running-config is modified but not saved?


  The changes will be lost if the device is powered off or restarted
• What command can be used to restore the device to its previous configuration if changes do not have the desired effect?


  reload
• What command is used to erase the startup-config in privileged EXEC mode?


  erase startup-config
• What is the purpose of capturing configuration to a text file?


  To save and archive the configuration for future reference
• What is the first step to capture configuration to a text file using terminal emulation software?


  Open terminal emulation software and connect to a switch
• What should be done after executing the show running-config command to capture the configuration?


  Disable logging in the terminal software
• What is the primary means of enabling devices to locate one another on the internet?

  IP addresses
• What is the structure of an IPv4 address?


  Dotted decimal notation represented by four decimal numbers between 0 and 255
• What is the purpose of an IPv4 subnet mask?


  To differentiate the network portion from the host portion of the address
• What does the default gateway address represent?


  The IP address of the router used to access remote networks
• How long is an IPv6 address?


  128 bits
• How are IPv6 addresses represented?


  As a string of hexadecimal values separated by colons
• What is the significance of the note regarding IP in this course?


  It refers to both IPv4 and IPv6 protocols
• What are the types of network media mentioned?

  Twisted-pair copper cables, fiber-optic cables, coaxial cables, and wireless
• What factors differentiate various types of network media?


  Distance, environment, data amount, speed, and cost
• What is required for end devices to communicate on the network?

  An IP address