ccna 200-301 subnetting questions

ccna 200-301 subnetting questions.This method creates a separate user account on each device by creating a specific password for each user. The local database method provides additional security because an attacker can use the local database method.provides additional security, as an attacker must know a username and a password to gain access. Since the user logs in with the userIt also provides additional auditing capabilities since the user name is recorded when the user logs in. Note that if the service password-encryption command is not configured, theThe command combination username password displays the password in plaintext in the configuration file. It is highly recommended to use the username secretcombination is highly recommended because it provides an MD5 encrypted password.The local database method also has some limitations. User accounts must be configured locally on each device. In large enterprise environments with multiple routers and switches to manage, implementing and changing the local database on a per-device basis can be quite a time-consuming task. In addition, the local database configuration does not provide a fallback authentication method. For example, what if an administrator forgets the username and password used for a device, and if there is no backup method available for authentication, only password recovery can be performed.A better solution would be for all devices to point to the same username and password database on the central server. This chapter will discuss the variousways to use Authentication, Authorization and Accounting (AAA) to protect network access and thereby secureCisco router security.Note: IOS15 introduces additional options in the username secret command; administrators can specify that the SHA encryption algorithm be used to encrypt the secret text string. Cisco recommends using SHA256 instead of MD5.