Arista

Hi all, I have an upcoming interview with Arista Networks (EOS team) for a Systems Software Engineer role with around 4 years of experience, and I have about one week to prepare. From what I understand, the first round can either be a DSA-style coding problem (arrays, linked lists, trees, etc.) or a partially implemented/buggy code module where we need to debug, complete functions, and possibly write unit tests. I’m trying to get a clearer picture of what to expect in reality. For candidates with \~4 YOE, is the round more focused on DSA or on debugging and code comprehension? Also, how deeply should I prepare topics like binary trees, BSTs, linked lists, and LRU cache? I’d also like to understand how important C/C++ internals are for this round—things like pointers, memory issues, and edge-case handling. Do they expect writing unit tests during the interview as well? Given that I only have about 7 days, any advice on which topics to prioritize or how to structure preparation would be really helpful. Thanks in advance! PS - Used AI for better wording