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LFCS · Question #690

What information can the lspci command display about the system hardware? (Choose THREE correct answers.)

The correct answer is A. Device IRQ settings B. PCI bus speed D. Device vendor identification. The lspci command provides detailed information about PCI devices, including their assigned IRQ settings, bus speed, and vendor identification.

Submitted by certguy· Apr 18, 2026Operation of Running Systems

Question

What information can the lspci command display about the system hardware? (Choose THREE correct answers.)

Options

  • ADevice IRQ settings
  • BPCI bus speed
  • CSystem battery type
  • DDevice vendor identification
  • EEthernet MAC address

How the community answered

(63 responses)
  • A
    94% (59)
  • C
    5% (3)
  • E
    2% (1)

Why each option

The `lspci` command provides detailed information about PCI devices, including their assigned IRQ settings, bus speed, and vendor identification.

ADevice IRQ settingsCorrect

`lspci` can display the Interrupt Request (IRQ) lines assigned to PCI devices, which are critical for hardware communication and preventing conflicts.

BPCI bus speedCorrect

`lspci` can output details about the PCI bus itself, including its maximum link speed and width, which impacts the performance of connected devices.

CSystem battery type

System battery type information is typically provided by ACPI tools (e.g., `acpi -V`) or by examining files in `/sys/class/power_supply/`, not by `lspci`.

DDevice vendor identificationCorrect

`lspci` lists PCI devices along with their vendor and device IDs (often with human-readable names), allowing for precise identification of the hardware manufacturer and model.

EEthernet MAC address

Ethernet MAC addresses are hardware identifiers for network interfaces and are typically displayed using network configuration commands like `ip addr show` or `ifconfig`, not `lspci`.

Concept tested: lspci command usage

Source: https://learn.microsoft.com/en-us/azure/virtual-machines/troubleshooting/linux-cpu-issues-azure-vm

Topics

#lspci command#Hardware identification#PCI devices

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