PCI quiz

What does PCI stand for?

• Personal Computer Interface

• Peripheral Component Interconnect

• Protocol for Computer Interaction

• Processor Control Instruction

What was the main objective behind defining the PCI bus?

• To establish a low-cost local bus for high-end LAN servers only

• To provide an upgrade path from 132 MB/s to 528 MB/s

• To support only 5-volt signaling environments

• To limit the number of electrical loads a single PCI bus can drive

What does PCI's transparent upgrade path allow for?

• Transition to future processors

• Use with only one specific processor architecture

• Compatibility with only low-end desktop systems

• Restriction to 64-bit at 66 MHz configuration

What does the Status Register in a PCI device structure indicate?

• Device operation control

• Memory Access

• Device status and error reporting

• Device enumeration

How are Base Address Registers (BARs) significant in PCI devices?

• They indicate the status of the device

• They are used for IRQ handling

• They specify memory or I/O address ranges that the device will respond to

• They control device operations

What is the purpose of Enumerating PCI Buses?

• To control device operations

• To assign IRQs to devices

• To identify and configure all devices on the PCI bus

• To manage memory access

What role does IRQ Handling play in the context of PCI devices?

• Status reporting

• Interrupt handling

• Memory mapping

• Device enumeration

Which of the following is one of the mechanisms used to access the PCI Bus Configuration Space?

• Access through memory mapping

• Access via specific I/O registers

• Access through direct processor communication

• Access via device control registers

What is the primary function of the Command Register in PCI devices?

• Handling interrupts

• Error reporting

• Memory mapping

• Controlling device operations

How can the size of the address space required by a PCI device be determined using Base Address Registers (BARs)?

• By reading the value of the BAR and dividing it by the page size.

• By writing a value of all 1's to the BAR register and then reading it back, masking the information bits, and incrementing the value by 1.

• By enabling both I/O and memory decode in the command byte and then querying the device.

• By directly accessing the device's firmware to retrieve the BAR information.