Cisco Software Engineer interview questions

Initially there was a coding and MCQ round. All questions asked there are already available on glassdoor. I got a call from the HR after a few days, and she said that they have selected me for further rounds. An interview was scheduled after a week or so. There were two technical rounds of 1 hour each. The interviewers were great and really professional. But things changed in the next round which was the managerial round. The manager seemed arrogant and not at all interested. Anyway, as the interview continued, he asked me a DSA question(Mirror tree). It was pretty easy and I solved it in no time. But the manager probably had no idea about DSA and was constantly suggesting that it won't work. I even did a dry run to convince the manager but he was simply clueless about the solution to the question(or maybe he was testing my confidence, which I really doubt). After the interview got over, I ran the same code online and it passed each and every test case without any issue. Only hr round was left after this. After 4 days I called the HR because I didn't get any update on the interview. HR said that it would take around 3-4 days to make a decision. Fast forward a month, I still haven't received a mail from them. I have also mailed them multiple times but didn't get any reply. The recruiters take candidates for granted, as if they are doing some favour by hiring us. I wasted 90 mins + 1 hr + 1 hr + 30 mins of my life for getting ghosted by the hr.

Got a call from HR for a weekend walk-in. Around 30 people with experiences starting from 2 - 8 years came for the walk-in. First round was written test on c/data structures, networking and OS concepts. Some 10 people cleared the first round. All these 10 people were interviewed at the same time for the first round. First round was on basic c questions and questions on arrays/strings etc. Second round is on DS- stack/queue/linked list/tree etc. Third is bit of puzzles on math and few questions on c programming. Fourth round is on Networking concepts like L2/L3 stuff along with a simple queue program. 5th round is managerial round - mostly concentrated on behaviours aspects. And finally at 5PM, manager said you are selected and hr will call you. Overall experience was good while being interviewed.