UVM Interview Questions in 2024

The Universal Verification Methodology (UVM) is a standardized methodology for verifying digital designs that helps develop a reusable, modular, and well-structured verification test bench. UVM provides pre-defined base classes and allows users to extend and reuse pre-defined methods.

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UVM uses a set of rules and approaches for verification that allows different teams to collaborate more effectively and understand each other’s code. This helps to improve communication across teams.


  • Why is UVM methodology necessary?
  • Distinction between uvm_object and uvm_component
  • Differences between uvm_transaction and uvm_sequence_item
  • Comparison of create and new()
  • Contrast between copy and clone
  • Difference between uvm_resource_db and uvm_config_db
  • What are severity and verbosity in UVM?
  • Differences between sequence and sequencer
  • How to execute any test case in UVM?
  • Create a simple uvm sequence template and explain each line.
  • How is a scoreboard connected to different components?
  • What is the UVM factory and its use?
  • Why were phases introduced in UVM? What are all phases present in UVM?
  • What approach does build_phase utilize and why?
  • Draw and explain the UVM verification environment.
  • Which UVM phases consume time?
  • Which phases are functions and tasks in UVM?
  • Why use the super keyword in phases like super.build_phase and super.main_phase?
  • Differences between uvm_do and uvm_rand_send
  • What are bottom-up and top-down approaches in UVM phases?
  • How do uvm_config_db set and get work?
  • What is an analysis port?
  • What are pre_body and post_body used for in a sequence?
  • What is an active and passive agent?
  • Distinction between UVM subscriber and UVM scoreboard
  • What is a uvm objection and why is it needed?
  • Different ways to exit code execution?
  • What is a sequence item in UVM?
  • Explain how a sequence starts.
  • How do sequence, driver, and sequencer communicate?
  • What are lock and grab methods?
  • What is the RAL model and its application?
  • Explain front-door and back-door register access.
  • What is TLM?
  • Define TLM FIFO.
  • What is the run_test function?
  • Explain the generalized code structure for a UVM monitor and scoreboard.
  • What is an in-order and out-of-order scoreboard?

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