Podcast
Questions and Answers
What is the first step in the boot sequence for a Cisco switch?
What is the first step in the boot sequence for a Cisco switch?
- Perform low-level CPU initialization
- Run the power-on self-test (POST) (correct)
- Initialize the flash file system
- Load the IOS operating system
What role does the boot loader play in the boot sequence?
What role does the boot loader play in the boot sequence?
- It executes the startup-config file.
- It initializes the CPU registers and memory. (correct)
- It loads the power-on self-test program.
- It controls the switch's network interfaces.
If the BOOT environment variable is not set, what does the switch do next?
If the BOOT environment variable is not set, what does the switch do next?
- Skip to loading the boot loader
- Attempt to load the first executable file it finds (correct)
- Search for the startup-config file
- Signal an error and restart
Which command would you use to check the current IOS boot file set in a Cisco switch?
Which command would you use to check the current IOS boot file set in a Cisco switch?
What is the role of the startup-config file during the boot process?
What is the role of the startup-config file during the boot process?
During which step does the switch load the default IOS operating system image?
During which step does the switch load the default IOS operating system image?
What does performing a POST check in the boot sequence evaluate?
What does performing a POST check in the boot sequence evaluate?
What happens during the boot loader's low-level CPU initialization?
What happens during the boot loader's low-level CPU initialization?
What type of cable must be used to connect switches without the auto-MDIX feature?
What type of cable must be used to connect switches without the auto-MDIX feature?
What must be set to enable the auto-MDIX feature to operate correctly on the interface?
What must be set to enable the auto-MDIX feature to operate correctly on the interface?
Which command is used to examine the auto-MDIX setting for a specific interface?
Which command is used to examine the auto-MDIX setting for a specific interface?
On which of the following switches is the auto-MDIX feature enabled by default?
On which of the following switches is the auto-MDIX feature enabled by default?
Which command displays the current running configuration of the switch?
Which command displays the current running configuration of the switch?
What should you include when limiting the output for the auto-MDIX setting?
What should you include when limiting the output for the auto-MDIX setting?
Which command is used to display the MAC address table of the switch?
Which command is used to display the MAC address table of the switch?
What do the Catalyst 2950 and Catalyst 3550 switches have in common regarding auto-MDIX?
What do the Catalyst 2950 and Catalyst 3550 switches have in common regarding auto-MDIX?
What is the purpose of the IP address applied to the Switch Virtual Interface (SVI)?
What is the purpose of the IP address applied to the Switch Virtual Interface (SVI)?
Which command can be used to determine the status of interfaces on a switch?
Which command can be used to determine the status of interfaces on a switch?
What is a requirement for full-duplex communication to increase bandwidth efficiency?
What is a requirement for full-duplex communication to increase bandwidth efficiency?
What potential issue arises from half-duplex communication?
What potential issue arises from half-duplex communication?
Which of the following statements about full-duplex and half-duplex communication is correct?
Which of the following statements about full-duplex and half-duplex communication is correct?
Why is microsegmentation important for a switch operating in full-duplex mode?
Why is microsegmentation important for a switch operating in full-duplex mode?
What is the effect of disabling the collision detection circuit in full-duplex mode?
What is the effect of disabling the collision detection circuit in full-duplex mode?
Which statement best describes the capabilities of Gigabit Ethernet and 10 Gb NICs?
Which statement best describes the capabilities of Gigabit Ethernet and 10 Gb NICs?
What does the output 'FastEthernet 0/18 is up/up' indicate?
What does the output 'FastEthernet 0/18 is up/up' indicate?
What is indicated by the first parameter of the 'show interfaces' command output?
What is indicated by the first parameter of the 'show interfaces' command output?
If the line protocol is down while the interface is up, what might be the problem?
If the line protocol is down while the interface is up, what might be the problem?
What does it mean if both the interface and line protocol are down?
What does it mean if both the interface and line protocol are down?
What would the command 'show interfaces fastEthernet 0/18' be used for?
What would the command 'show interfaces fastEthernet 0/18' be used for?
What is a likely cause if the FastEthernet 0/18 interface is up but the line protocol is down?
What is a likely cause if the FastEthernet 0/18 interface is up but the line protocol is down?
What is the default gateway set to in the described configuration?
What is the default gateway set to in the described configuration?
What does the term 'administratively down' indicate about a network interface?
What does the term 'administratively down' indicate about a network interface?
What is one of the first configuration tasks that should be performed on a router?
What is one of the first configuration tasks that should be performed on a router?
What command must be used to activate a router interface that is in the shutdown state?
What command must be used to activate a router interface that is in the shutdown state?
Why is it considered good practice to configure descriptions on router interfaces?
Why is it considered good practice to configure descriptions on router interfaces?
What type of interfaces do Layer 2 switches typically support?
What type of interfaces do Layer 2 switches typically support?
Which command is used to assign an IP address to a router interface?
Which command is used to assign an IP address to a router interface?
What must an interface be connected to for the physical layer to be active?
What must an interface be connected to for the physical layer to be active?
What is the purpose of configuring a banner on a router?
What is the purpose of configuring a banner on a router?
How many integrated Gigabit Ethernet interfaces do G2 ISRs typically have?
How many integrated Gigabit Ethernet interfaces do G2 ISRs typically have?
Study Notes
Verifying Connectivity Between Networks
- Directly connected networks can be verified using various commands available in the router's operating system.
Switch Boot Sequence
- The switch boot sequence consists of five stages:
- Power-On Self-Test (POST): Checks CPU, DRAM, and flash systems.
- Boot Loader: A ROM-based program initializes CPU settings.
- Flash File System Initialization: Prepares flash memory for use.
- IOS Loading: Loads the default IOS operating system.
Boot System Command
- The BOOT environment variable determines the IOS image the switch attempts to load.
- If unset, the switch executes the first executable file found.
- Startup configuration is located in the config.text file within flash memory.
Switch Virtual Interface (SVI) Configuration
- Command
show ip interface briefandshow ipv6 interface briefhelp verify status of interfaces; SVI IP addresses do not facilitate Layer 3 routing.
Basic Switch Configuration Lab
- Objectives include:
- Cabling network and verifying default switch configuration
- Configuring basic network device settings
- Verifying and testing network connectivity
- Managing the MAC address table
Duplex Communication
- Full-Duplex: Allows simultaneous data transmission and reception, enhancing bandwidth efficiency and removing collision domains.
- Half-Duplex: Transmits in one direction at a time, causing potential collisions.
Cables and Connections
- Non-auto-MDIX switches require straight-through cables for connecting to devices and crossover cables for switches. Auto-MDIX allows flexibility in cable types.
Switch Verification Commands
show interfaces [interface-id]: Displays interface status.show startup-config: Displays startup configuration file.show running-config: Displays current configuration.show version: Displays hardware/software status.show mac-address-table: Provides the MAC address table.
Verifying Switch Port Configuration
- The
show running-configcommand reveals key configuration data such as interface and VLAN settings. - The
show interfacescommand provides operational status and statistics of network interfaces.
Network Access Layer Issues
- The output from
show interfaceshelps identify issues at the hardware and data link layers. - Common problems may include encapsulation mismatches or physical connection issues.
Basic Router Configuration
- Essential tasks include naming devices, enabling passwords, and configuring login banners for security.
Dual Stack Topology
- Routers can support both IPv4 and IPv6 interfaces, enabling interconnectivity between different protocols.
Configuring Router Interfaces
- Interfaces must be configured with an IP address and activated using the
no shutdowncommand. - Descriptions on interfaces enhance troubleshooting and identification in networks.
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Description
This quiz focuses on verifying connectivity between directly connected networks on a Cisco router and configuring a switch with initial settings. Test your knowledge on the switch boot sequence and network configuration. Perfect for networking enthusiasts and students.
