CCNA Security Chapter 3
Refer to the exhibit. Router R1 has been configured as shown, with the resulting log message. On the basis of the information that is presented, which two statements describe the result of AAA authentication operation? (Choose two.) -The locked-out user should have used the username admin and password Str0ngPa55w0rd . -The locked-out user stays locked out until the clear aaa local user lockout username Admin command is issued. -The locked-out user failed authentication. -The locked-out user stays locked out until the interface is shut down then re-enabled. -The locked-out user is locked out for 10 minutes by default.
-The locked-out user stays locked out until the clear aaa local user lockout username Admin command is issued. -The locked-out user failed authentication.
Which solution supports AAA for both RADIUS and TACACS+ servers? -Implement Cisco Secure Access Control System (ACS) only. -RADIUS and TACACS+ servers cannot be supported by a single solution. -Implement a local database. -Implement both a local database and Cisco Secure Access Control System (ACS).
Implement Cisco Secure Access Control System (ACS) only.
When a method list for AAA authentication is being configured, what is the effect of the keyword local ? -It uses the enable password for authentication. -It defaults to the vty line password for authentication. -It accepts a locally configured username, regardless of case. -The login succeeds, even if all methods return an error.
It accepts a locally configured username, regardless of case.
Why is authentication with AAA preferred over a local database method? -It requires a login and password combination on the console, vty lines, and aux ports. -It specifies a different password for each line or port. -It uses less network bandwidth. -It provides a fallback authentication method if the administrator forgets the username or password.
It provides a fallback authentication method if the administrator forgets the username or password.
What is a characteristic of AAA accounting? -Possible triggers for the aaa accounting exec default command include start-stop and stop-only . -Accounting is concerned with allowing and disallowing authenticated users access to certain areas and programs on the network. -Accounting can only be enabled for network connections. -Users are not required to be authenticated before AAA accounting logs their activities on the network.
Possible triggers for the aaa accounting exec default command
What protocol is used to encapsulate the EAP data between the authenticator and authentication server performing 802.1X authentication? TACACS+ SSH MD5 RADIUS
RADIUS
Which server-based authentication protocol would be best for an organization that wants to apply authorization policies on a per-group basis? -SSH -TACACS+ -RADIUS -ACS
TACACS+
What is a characteristic of TACACS+? -TACACS+ is backward compatible with TACACS and XTACACS. -TACACS+ uses UDP port 1645 or 1812 for authentication, and UDP port 1646 or 1813 for accounting. -TACACS+ is an open IETF standard. -TACACS+ provides authorization of router commands on a per-user or per-group basis.
TACACS+ provides authorization of router commands on a per-user or per-group basis. Navigation Bar
Why would a network administrator include a local username configuration, when the AAA-enabled router is also configured to authenticate using several ACS servers? -Without a local username database, the router will require successful authentication with each ACS server. -A local username database is required when configuring authentication using ACS servers. -The local username database will provide a backup for authentication in the event the ACS servers become unreachable. -Because ACS servers only support remote user access, local users can only authenticate using a local username database.
The local username database will provide a backup for authentication in the event the ACS servers become unreachable.
Refer to the exhibit. Which statement describes the configuration of the ports for Server1? -The configuration will not be active until it is saved and Rtr1 is rebooted. -The configuration is using the default ports for a Cisco router. -The ports configured for Server1 on the router must be identical to those configured on the RADIUS server. -The configuration of the ports requires 1812 be used for the authentication and the authorization ports
The ports configured for Server1 on the router must be identical to those configured on the RADIUS server.
What is the result of entering the aaa accounting network command on? -The router collects and reports usage data related to network-related service requests. -The router outputs accounting data for all outbound connections such as SSH and Telnet. -The router provides data for only internal service requests. -The router outputs accounting data for all EXEC shell sessions. Navigation Bar
The router collects and reports usage data related to network-related service requests.
A user complains about being locked out of a device after too many unsuccessful AAA login attempts. What could be used by the network administrator to provide a secure authentication access method without locking a user out of a device? -Use the login delay command for authentication attempts. -Use the none keyword when configuring the authentication method list. -Use the aaa local authentication attempts max-fail global configuration mode command with a higher number of acceptable failures. -Use the login local command for authenticating user access.
Use the login delay command for authentication attempts.
A user complains about not being able to gain access to a network device configured with AAA. How would the network administrator determine if login access for the user account is disabled? -Use the show aaa local user lockout command. -Use the show aaa user command. -Use the show aaa sessions command. -Use the show running-configuration command.
Use the show aaa local user lockout command.
Which characteristic is an important aspect of authorization in an AAA-enabled network device? -User actions are recorded for use in audits and troubleshooting events. -A user must be identified before network access is granted. -The authorization feature enhances network performance. -User access is restricted to certain services.
User access is restricted to certain services.
What difference exists when using Windows Server as an AAA server, rather than Cisco Secure ACS? -Windows Server cannot be used as an AAA server. -Windows Server requires more Cisco IOS commands to configure. -Windows Server only supports AAA using TACACS. -Windows Server uses its own Active Directory (AD) controller for authentication and authorization.
Windows Server uses its own Active Directory (AD) controller for authentication and authorization.
Which component of AAA allows an administrator to track individuals who access network resources and any changes that are made to those resources? -accounting -authorization -authentication -accessibility
accounting
Because of implemented security controls, a user can only access a server with FTP. Which AAA component accomplishes this? -authorization -accessibility -authentication -auditing -accounting
authorization
Which debug command is used to focus on the status of a TCP connection when using TACACS+ for authentication? -debug tacacs events -debug aaa authentication -debug tacacs accounting -debug tacacs
debug tacacs events
True or False?The single-connection keyword prevents the configuration of multiple TACACS+ servers on a AAA-enabled router. false true
false
Which authentication method stores usernames and passwords in the router and is ideal for small networks? -server-based AAA over RADIUS -local AAA -local AAA over RADIUS -local AAA over TACACS+ -server-based AAA over TACACS+ -server-based AAA
local AAA
Which two features are included by both TACACS+ and RADIUS protocols? (Choose two.) -password encryption -separate authentication and authorization processes -SIP support -802.1X support -utilization of transport layer protocols
password encryption utilization of transport layer protocols
What device is considered a supplicant during the 802.1X authentication process? -the router that is serving as the default gateway -the switch that is controlling network access -the client that is requesting authentication -the authentication server that is performing client authentication
the client that is requesting authentication
When using 802.1X authentication, what device controls physical access to the network, based on the authentication status of the client? -the switch that the client is connected to -the router that is serving as the default gateway -the authentication server -the supplicant
the switch that the client is connected to.
