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Questions and Answers
What type of memory is used to store the running configuration on a Cisco device?
Which of the following is a characteristic of SSH compared to Telnet?
In which mode of operation does an administrator enter commands to configure a device?
Which naming convention is valid for naming a Cisco IOS device?
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What is the primary difference between SSH and Telnet?
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How does Flash memory differ from RAM in terms of data retention?
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What is the correct sequence to access global configuration mode from user EXEC mode?
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Which CLI command would be used to enter privileged EXEC mode from user EXEC mode?
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Which interfaces can be secured with passwords in Cisco IOS? (Choose three.)
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What purpose does the switch virtual interface (SVI) serve in a Layer 2 switch?
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What will pressing the Tab key do when in the Cisco IOS command line?
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What should a technician do to revert to the NVRAM configuration after making unsaved changes?
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What functionality does the Ctrl-Shift-6 key combination provide on a Cisco switch?
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Which of the following interfaces does NOT support password protection in Cisco IOS?
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What command is used to see the startup configuration file after changes were made to the running configuration?
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What is the main function of an auxiliary (AUX) interface on a switch?
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Which characteristic of an SVI indicates its relationship with physical interfaces on a switch?
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What is the primary purpose of the 'show ip interface brief' command?
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Which of the following is a shortcut key combination used to interrupt an IOS process?
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Which command provides context-sensitive help within the CLI?
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Which statement accurately describes an SVI's default configuration?
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What does the command 'ipconfig' accomplish?
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Which of the following statements about SVIs is false?
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Which CLI shortcut allows a user to cycle through previously entered commands?
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Study Notes
RAM and Flash Memory
- RAM stores multiple versions of IOS and configuration files, functioning as volatile memory.
- Data stored in RAM is lost during a power cycle, while the running configuration is retained in this memory.
- Flash memory is nonvolatile, holding IOS and delivering it to RAM upon device power-up.
Cisco IOS Naming Conventions
- Valid host names must start with a letter, contain no spaces, and end with a letter or digit.
- Acceptable characters include letters, digits, and dashes, with a maximum length of 64 characters.
- Examples of valid host names: “SwBranch799” while “Branch2!RM-3-Switch-2A4” and “Floor(15)” violate naming rules.
SSH vs. Telnet
- SSH is secure, encrypting messages and requiring user authentication, while Telnet sends data in plaintext and lacks security.
- SSH connections are made over the network, whereas Telnet usually requires an out-of-band connection.
- Common terminal emulation programs: PuTTY for SSH and Tera Term for Telnet.
IOS Modes for Switch Configuration
- Configuring a switch console password begins in user EXEC mode, then transitions to privileged EXEC mode after entering the enable command.
- The next step is entering global configuration mode via the configure terminal command, followed by line console 0 to reach the configuration interface.
Characteristics of Switch Virtual Interfaces (SVIs)
- SVIs are created in software and not associated with physical interfaces.
- They provide remote management capabilities for switches over an IP network.
- By default, SVIs are associated with VLAN1 in the switch’s configuration.
Verifying Switch Interface Status
- The command
show ip interface brief
is used to check the status and configuration of switch interfaces. - Other commands like ‘ipconfig’ and ‘ping’ serve different purposes related to host properties and Layer 3 connectivity.
CLI Hot Keys and Shortcuts
- Tab key completes partially typed commands or keywords.
- Question mark (?) provides context-sensitive help.
- Up Arrow allows scrolling through previously entered commands.
- Ctrl-C cancels commands, returning to privileged EXEC mode; Ctrl-Shift-6 interrupts processes like ping.
Protecting Access with Passwords
- Passwords can restrict access to the VTY and console interfaces, user EXEC mode, and privileged EXEC mode.
- Additional security measures may be necessary for complete protection.
Remote Management of Layer 2 Switch
- The switch virtual interface (SVI) on a Layer 2 switch facilitates remote management.
Command Completion Functionality
- Pressing the Tab key during command entry completes the remainder of a partially typed command.
Discarding Unwanted Configuration Changes
- To discard unsaved changes made during configuration, the technician should issue the reload command without saving.
- Using
copy startup-config running-config
does not discard changes; it only adds to the current configuration.
Purpose of Ctrl-Shift-6 Key Combination
- This key combination interrupts an IOS process, allowing the technician to halt ongoing commands like ping for troubleshooting.
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Description
This quiz covers key concepts in Cisco networking regarding RAM and Flash memory, highlighting their roles in device operation. Additionally, it explains Cisco IOS naming conventions and compares SSH and Telnet protocols. Test your knowledge on networking fundamentals and best practices.