ITN Chapter 2 Quiz Online Cisco 2019 100%

A hostname can be configured with upper or lower case characters and should end with a letter or digit, not a special character. A hostname should start with a letter and no space is allowed for a hostname.

Usually, changes are made to a running configuration in RAM and copied to NVRAM. However, in this case, the technician wants to copy a previously saved configuration from NVRAM into RAM in order to make changes to it.?

User EXEC mode limits access to some show and debug commands. It is the first level of user interface encountered when configuring a router and is intended for investigation of certain functions of the device. The User EXEC prompt is identified with the ">" symbol.

To prevent all configured passwords from appearing in plain text in configuration files, an administrator can execute the service password-encryption command. This command encrypts all configured passwords in the configuration file.

SSH is the preferred protocol for connecting to a device operating system over the network because it is much more secure than Telnet. Both SSH and Telnet are used to connect to devices over the network, and so are both used in-band. PuTTY and Terra Term can be used to make both SSH and Telnet connections.

Access to the VTY and console interfaces can be restricted using passwords. Out-of-band management of the router can be restricted in both user EXEC and privileged EXEC modes.

For hosts to reach remote networks, they must send traffic to a local router that can route the traffic to the correct destination network. This local router is known as the default gateway and hosts must be configured with this address in order to communicate with devices on remote networks.

Changes to router and switch configurations take effect as soon as the command is entered. For this reason, it is very important that changes to live production devices are always carefully planned before being implemented. If commands are entered that render the device unstable or inaccessible, the device may have to be reloaded, resulting in network downtime.

For a switch to have an IP address, a switch virtual interface must be configured. This allows the switch to be managed remotely over the network.

Assigning IP addresses automatically using DHCP will greatly eliminate the chance of a duplicate IP address error.

Context-sensitive help provides the user with a list of commands and the arguments associated with those commands within the current mode of a networking device. A syntax checker provides error checks on submitted commands and the TAB key can be used for command completion if a partial command is entered.

Connectivity between two end devices can be tested using the ping, tracert, or traceroute commands.

All devices that communicate over data networks need unique IP addresses.

Operating systems function with a shell, a kernel, and the hardware. The shell interfaces with the users, allowing them to request specific tasks from the device. The kernel provisions resources from the hardware to meet software requirements. The hardware functions by using drivers and their underlying electronics. The hardware represents the physical components of the device.