NWT Chapter 2

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Questions and Answers

What is required for remote management of a Cisco switch?

The latest firmware update installed on the switch

A user account with administrative privileges

A configured IP address, subnet mask, and default gateway (correct)

A direct cable connection to the switch

Which statement is true regarding Layer 2 switches?

They can route layer 3 packets effectively

They do not require an IP address for basic functionality

They can manage remote devices without configuration

They only manage local traffic within the same IP subnet (correct)

What is the purpose of the ping command in network management?

To test end-to-end connectivity between devices (correct)

To configure IP addresses on end devices

To change the network configuration settings

To monitor bandwidth usage across the network

In the context of IP address configuration, what does DHCP stand for?

Dynamic Host Configuration Protocol Signup and view all the answers

What type of IP addressing is required for devices that do not need constant IP address changes?

Static IP addressing Signup and view all the answers

Which command allows transition from User EXEC Mode to Privileged EXEC Mode?

enable Signup and view all the answers

Which of the following commands is available in Privileged EXEC Mode but not in User EXEC Mode?

configure terminal Signup and view all the answers

In which mode would you be if the router prompt is 'Router(config)#'?

Global Configuration Mode Signup and view all the answers

Which of these actions could you perform in User EXEC Mode?

View limited system information Signup and view all the answers

What command is used to exit Global Configuration Mode?

end Signup and view all the answers

Which mode provides the most comprehensive access to all commands and configuration options?

Privileged EXEC Mode Signup and view all the answers

Which command allows you to view all User EXEC commands available in a given mode?

help Signup and view all the answers

Which terminal emulation program is NOT listed as a method for connecting to a Cisco IOS device?

Cisco Connect Signup and view all the answers

What command is executed to re-enter privileged mode after you have disabled it?

enable Signup and view all the answers

Which configuration mode allows you to enter commands specific to an interface?

Interface Configuration Mode Signup and view all the answers

What command would you use to display running configuration files?

show running-config Signup and view all the answers

Which command is effective for securing console access on a device?

enable secret Signup and view all the answers

What does the command 'copy run start' accomplish?

Saves the running configuration to the startup configuration Signup and view all the answers

Which keyboard shortcut interrupts an IOS process like ping or traceroute?

Ctrl-shift-6 Signup and view all the answers

What is the purpose of the command 'service password-encryption'?

Converts plain text passwords to encrypted format Signup and view all the answers

How would you administratively enable an interface on a router or switch?

no shutdown Signup and view all the answers

In a banner message configured with 'banner motd', which character is used to delimit the message?

<h1></h1> Signup and view all the answers

What does the command 'erase startup-config' accomplish?

Deletes the startup configuration file Signup and view all the answers

Which command would you use to display properties of the router or switch, such as IOS version and model?

show version Signup and view all the answers

Which command would best ensure legal notification for users connected to a terminal?

banner motd Signup and view all the answers

What occurs when you issue a command with insufficient characters for IOS to interpret it accurately?

An ambiguous command error is returned. Signup and view all the answers

Which key combination is used to move the cursor to the beginning of the command line in IOS?

Ctrl-A Signup and view all the answers

What happens when you type a command with a space before the '?' character in IOS?

IOS displays command arguments or variables that can follow. Signup and view all the answers

If required keywords or arguments are omitted from a command, which of the following indicates that an error has occurred?

A message indicates the command is incomplete. Signup and view all the answers

When navigating between different configuration modes in IOS, what is necessary?

No need to return to global config mode. Signup and view all the answers

What will IOS display when you input a command, and it detects an invalid entry?

Just a caret (^) character indicating the error position. Signup and view all the answers

Which feature provides assistance in finding keywords or commands based on input in IOS?

Context-sensitive help with '?' Signup and view all the answers

Which key is used to complete a partially typed command in IOS?

Tab Signup and view all the answers

In which scenario would you receive an 'Incomplete command' error from IOS?

When not all required keywords or arguments are provided. Signup and view all the answers

What type of error indicates that a command cannot be understood due to insufficient data within the command?

Ambiguous command Signup and view all the answers

What is the primary function of the kernel in an operating system?

It manages hardware resources in relation to software requirements. Signup and view all the answers

Which connection method uses a console cable to access a Cisco IOS device?

Console port access Signup and view all the answers

What distinguishes SSH from telnet in accessing Cisco IOS devices?

SSH communications are encrypted, while telnet is not. Signup and view all the answers

Which of the following best describes 'out-of-band' access?

Access using a separate connection, not via the network. Signup and view all the answers

In which situation would you likely use the auxiliary port for access?

When the network is down and remote access is needed. Signup and view all the answers

What does the term 'virtual terminals' (VTY) refer to?

Remote access sessions over a network connection. Signup and view all the answers

Which method of access is generally less secure due to a lack of encryption?

telnet access Signup and view all the answers

Which component of an operating system primarily provides the user interface?

Shell Signup and view all the answers

Study Notes

Introduction to Networks v7.0 (ITN) Module 2

This module covers configuring a network operating system
Topics include Cisco IOS and IOS Access, IOS Navigation, Command Structure, Basic IOS commands, Configure IP Addressing, and Verify Connectivity
ITN reference numbers are provided for each topic (2.1-2.8)

Operating Systems

All computing devices (computers, network devices, home wireless routers) rely on operating systems (OS) or firmware.
Operating systems consist of a shell and a kernel.
The shell is the user interface that allows users to interact with the computer (CLI or GUI).
The kernel communicates between hardware and software, managing hardware resources used by software.
Cisco IOS is the OS used on Cisco networking devices.

Accessing a Cisco IOS Device

Cisco routers/switches lack keyboards and screens.
Access methods are "out-of-band" and "in-band."
Out-of-band methods use a separate connection, such as:
- Console Port (console cable connects to the console port)
- Auxiliary Port (modem and telephone line connection). The device should be in a secure room.
In-band methods use the network connection, such as:
- Telnet (less secure; communication is not encrypted).
- SSH (more secure; communication is encrypted)

Terminal Emulation Programs

Software for connecting to networking devices includes:
- PuTTY
- Tera Term
- SecureCRT
- HyperTerminal
- OS X Terminal

Cisco IOS has multiple modes of operation:
- User EXEC mode (Router>)
- Privileged EXEC mode (Router#)
- Global configuration mode (Router(config)#)
- Interface configuration mode (Router(config-if)#)
- Other Configuration modes (Router(config-x)
Moving between modes: Use specific commands to navigate to different modes.
Commands are displayed depending on the mode
Commands are context-sensitive

The Command Structure

IOS commands follow a specific structure:
- Prompt
- Command
- Space
- Keyword / Argument
Context-sensitive help is available using "?".
IOS error messages can indicate incomplete or ambiguous commands, with error reporting. Specific characters designate the location of the error.

Hot Keys and Shortcuts

Tab: Completes partially typed commands/keywords.
Ctrl-R: Redisplays a line.
Ctrl-A: Moves cursor to beginning of line.
Ctrl-Z: Exits configuration mode.
Down Arrow: Scrolls forward through previous commands.
Up Arrow: Scrolls backward through previous commands.
Ctrl-shift-6: Interrupts IOS processes (e.g. ping).
Ctrl-C: Closes current configuration or aborts the command.

Basic IOS Commands

Show version: Displays router/switch properties (version, memory, model).
Hostname: Configures the device name.
Service password-encryption: Converts plain text passwords to encrypted format.
No shutdown: Enables the interface administratively.
Banner motd: Configures a banner message.
Show running-config / sh run: Shows current configuration.
Copy running-config startup-config: Copies running config to startup config.
Erase startup-config: Deletes the startup configuration file.

Securing Device Access using Passwords

Configure passwords to access privileged EXEC mode using "enable secret" command
Configure console access using "line console 0," "password," and "login"
Configure VTY access (telnet or SSH) using "line vty," "password," and "login" to secure access

Configure IP Addressing

Configuring a Cisco switch with an IP address, subnet mask, and default gateway is needed for remote access.
The switch needs these parameters if you are connecting from a remote location
Configure the Management Interface IP Address.
Enable the Management Interface.
Configure the Default Gateway.
Return to the Privileged EXEC mode.
Save the running config to the startup config.

Verify Connectivity

Use the ping command to test connectivity to a destination device. Pinging verifies that the destination device is reachable.
For example, "ping 192.168.10.11"

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Description

Test your knowledge on remote management of Cisco switches and other networking concepts. This quiz covers important topics such as Layer 2 switches, IP addressing, and command modes in Cisco IOS. Perfect for aspiring network administrators or those preparing for networking certifications.