Cisco Networking Quiz: Directly Connected Networks
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Questions and Answers

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?

  • 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?

  • 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?

    <p>show boot</p> Signup and view all the answers

    What is the role of the startup-config file during the boot process?

    <p>It contains commands for initializing interfaces.</p> Signup and view all the answers

    During which step does the switch load the default IOS operating system image?

    <p>Immediately after initializing the flash file system</p> Signup and view all the answers

    What does performing a POST check in the boot sequence evaluate?

    <p>CPU, DRAM, and a portion of the flash file system</p> Signup and view all the answers

    What happens during the boot loader's low-level CPU initialization?

    <p>The CPU registers are initialized and mapped to physical memory.</p> Signup and view all the answers

    What type of cable must be used to connect switches without the auto-MDIX feature?

    <p>Crossover cables</p> Signup and view all the answers

    What must be set to enable the auto-MDIX feature to operate correctly on the interface?

    <p>Interface speed and duplex</p> Signup and view all the answers

    Which command is used to examine the auto-MDIX setting for a specific interface?

    <p>show controllers ethernet-controller</p> Signup and view all the answers

    On which of the following switches is the auto-MDIX feature enabled by default?

    <p>Catalyst 2960</p> Signup and view all the answers

    Which command displays the current running configuration of the switch?

    <p>show running-config</p> Signup and view all the answers

    What should you include when limiting the output for the auto-MDIX setting?

    <p>include Auto-MDIX</p> Signup and view all the answers

    Which command is used to display the MAC address table of the switch?

    <p>show mac address-table</p> Signup and view all the answers

    What do the Catalyst 2950 and Catalyst 3550 switches have in common regarding auto-MDIX?

    <p>They both do not support auto-MDIX.</p> Signup and view all the answers

    What is the purpose of the IP address applied to the Switch Virtual Interface (SVI)?

    <p>For remote management access to the switch</p> Signup and view all the answers

    Which command can be used to determine the status of interfaces on a switch?

    <p>show ip interface brief</p> Signup and view all the answers

    What is a requirement for full-duplex communication to increase bandwidth efficiency?

    <p>Microsegmentation</p> Signup and view all the answers

    What potential issue arises from half-duplex communication?

    <p>Resulting collisions due to unidirectional flow</p> Signup and view all the answers

    Which of the following statements about full-duplex and half-duplex communication is correct?

    <p>Full-duplex offers 100 percent efficiency in both directions</p> Signup and view all the answers

    Why is microsegmentation important for a switch operating in full-duplex mode?

    <p>It prevents collisions by ensuring only one device per port</p> Signup and view all the answers

    What is the effect of disabling the collision detection circuit in full-duplex mode?

    <p>Maximizes the use of stated bandwidth</p> Signup and view all the answers

    Which statement best describes the capabilities of Gigabit Ethernet and 10 Gb NICs?

    <p>They require full-duplex connections to function properly</p> Signup and view all the answers

    What does the output 'FastEthernet 0/18 is up/up' indicate?

    <p>The interface is operational and properly configured.</p> Signup and view all the answers

    What is indicated by the first parameter of the 'show interfaces' command output?

    <p>Whether the interface is receiving a signal.</p> Signup and view all the answers

    If the line protocol is down while the interface is up, what might be the problem?

    <p>An encapsulation type mismatch may exist.</p> Signup and view all the answers

    What does it mean if both the interface and line protocol are down?

    <p>No cable is connected or another issue exists.</p> Signup and view all the answers

    What would the command 'show interfaces fastEthernet 0/18' be used for?

    <p>To display statistics and status of a specific interface.</p> Signup and view all the answers

    What is a likely cause if the FastEthernet 0/18 interface is up but the line protocol is down?

    <p>There is likely a physical connection issue.</p> Signup and view all the answers

    What is the default gateway set to in the described configuration?

    <p>172.17.99.1</p> Signup and view all the answers

    What does the term 'administratively down' indicate about a network interface?

    <p>The interface has been manually disabled.</p> Signup and view all the answers

    What is one of the first configuration tasks that should be performed on a router?

    <p>Configure passwords and name the device</p> Signup and view all the answers

    What command must be used to activate a router interface that is in the shutdown state?

    <p>no shutdown</p> Signup and view all the answers

    Why is it considered good practice to configure descriptions on router interfaces?

    <p>To assist in troubleshooting and identification</p> Signup and view all the answers

    What type of interfaces do Layer 2 switches typically support?

    <p>Gigabit Ethernet and FastEthernet ports</p> Signup and view all the answers

    Which command is used to assign an IP address to a router interface?

    <p>ip address ip-address subnet-mask</p> Signup and view all the answers

    What must an interface be connected to for the physical layer to be active?

    <p>A hub, switch, or another router</p> Signup and view all the answers

    What is the purpose of configuring a banner on a router?

    <p>To provide legal notification of unauthorized access</p> Signup and view all the answers

    How many integrated Gigabit Ethernet interfaces do G2 ISRs typically have?

    <p>One or two</p> Signup and view all the answers

    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 brief and show ipv6 interface brief help 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-config command reveals key configuration data such as interface and VLAN settings.
    • The show interfaces command provides operational status and statistics of network interfaces.

    Network Access Layer Issues

    • The output from show interfaces helps 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 shutdown command.
    • Descriptions on interfaces enhance troubleshooting and identification in networks.

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    Quiz Team

    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.

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