10 - Basic Router Configuration
Provide legal notification.
Router(config)# banner motd delimiter message delimiter
Secure privileged EXEC mode.
Router(config)# enable secret password
Save the configuration.
Router(config)# end Router# copy running-config startup-config
Configure the device name.
Router(config)# hostname name
What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered?
portsmouth(config)# Topic 10.1.0 - The command hostname portsmouth is used to change the current router name to portsmouth.
Which CLI mode allows users to access all device commands, such as those used for configuration, management, and troubleshooting?
privileged EXEC mode Topic 10.1.0 - The command Router#configure terminal allows a user to enter the privileged mode from where the configuration,management and troubleshooting commands can be accessed.
Configure an IPv4 default gateway on a switch
ip default-gateway {ip-address} (global configuration command)
What is the purpose of the banner motd command?
It provides a way to make announcements to those who log in to a router. Topic 10.1.0 - The banner motd command is used to display a message when a user attempts to log into the router.
Which statement regarding the service password-encryption command is true?
As soon as the service password-encryption command is entered, all currently set passwords formerly displayed in plain text are encrypted. Topic 10.1.0 - The command service password-encryption is used to encrypt all the clear text passwords in the running-configuration file.
show interfaces
Displays statistics for all interfaces on the device. However, this command will only display the IPv4 addressing information.
show ip interface
Displays the IPv4 statistics for all interfaces on a router
show ipv6 interface
Displays the IPv6 statistics for all interfaces on a router
show ip route show ipv6 route
Displays the contents of the IP routing tables stored in RAM.
An administrator is configuring a new router to permit out-of-band management access. Which set of commands will allow the required login using a password of cisco?
Router(config)# line console 0 Router(config-line)# password cisco Router(config-line)# login Topic 10.1.0 - The VTY lines are the Virtual Terminal lines of the router, used solely to control inbound Telnet connections while console 0 is the physical console port on the switch/router you plug into. The line vty command is used to remote configure access into the switch/router via telnet or ssh.
Secure user EXEC mode.
Router(config)# line console 0 Router(config-line)# password password Router(config-line)# login
Secure all passwords in the config file.
Router(config-line)# exit Router(config)# service password-encryption
Secure remote Telnet / SSH access.
Router(config-line)# line vty 0 4 Router(config-line)# password password Router(config-line)# login Router(config-line)# transport input {ssh | telnet}
Which command is used to encrypt all passwords in a router configuration file?
Router_A(config)# service password-encryption Topic 10.1.0 - The command service password-encryption is used to encrypt and secure plain-text passwords configured on a router.
A router boots and enters setup mode. What is the reason for this?
The configuration file is missing from NVRAM. Topic 10.1.0 - If a router cannot locate the startup-config file in NVRAM it will enter setup mode to allow the configuration to be entered from the console device.
show ip interface brief show ipv6 interface brief
The output displays all interfaces, their IP addresses, and their current status. The configured and connected interfaces should display a Status of "up" and Protocol of "up". Anything else would indicate a problem with either the configuration or the cabling.
A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?
any line configuration mode Topic 10.1.0 - The command login is used to allow access to a router or switch through aux lines, console lines, and Telnet lines.
Company policy requires using the most secure method to safeguard access to the privileged exec and configuration mode on the routers. The privileged exec password is trustknow1. Which of the following router commands achieves the goal of providing the highest level of security?
enable secret trustknow1 Topic 10.1.0 - The command service password-encryption is used to encrypt and secure plain-text passwords configured on a router
Which command can be used on a Cisco router to display all interfaces, the IPv4 address assigned, and the current status?
show ip interface brief Topic 10.2.0 - The show ip interface brief command can be used on a Cisco router to display all interfaces, the IPv4 address assigned, and the current status.
Which characteristic describes the default gateway of a host computer?
the logical address of the router interface on the same network as the host computer Topic 10.3.0 - The default gateway is the IP address of an interface on the router on the same network as the sending host.
What is stored in the NVRAM of a Cisco router?
the startup configuration Topic 10.1.0 - The Cisco IOS is stored in flash. The running configuration file is stored in RAM. The bootup instructions are stored in ROM. The startup configuration file is stored in NVRAM.
What is the purpose of the startup configuration file on a Cisco router?
to contain the commands that are used to initially configure a router on startup Topic 10.1.0 - The startup configuration file is stored in NVRAM and contains the commands needed to initially configure a router. It also creates the running configuration file that is stored in in RAM.
