SOF National Cyber Olympiad (NCO) is conducted to identify talented students. SOF NCO exam is open for students of classes 1 to 10. On the basis of the obtained score in the entrance exam Students are suitably awarded at four different levels i.e. School, City, Zonal and International level. SOF releases NCO Answer Key of Class 3 after the entrance exam. Candidates can use the answer key to estimate the score in the exam. To know more NCO Answer Keys 2021 – 2022 for Class 3 check this article.
21th NCO 2021 – 2022 Answer Keys for Class 3
21th NCO exam will be conducted for the students of classes 1 to 10. Participants of Olympiads are ranked on the basis of marks obtained in the NCO Exam. 21th NCO Answer key of 21th NCO 2021 – 2022 will publish here after the successful conduction of examination.
20th NCO 2019 – 2020 Answer Keys for Class 3
19th NCO single level exam is conducted on November 28, 2019 and December 19, 2019. 19th NCO 2019 Answer Keys is available here.
NCO Answer Keys for Set A

NCO Answer Keys for Set B

NCO Exam Answer Key 2018
18th NCO Exam is conducted on 20 Dec 2018 and 31 Jan 2019. Answer Key for the same is published here.
NCO Answer Keys for Set A

NCO Answer Keys for Set B

NCO Exam Answer Key 2017
17th NCO Exam has been conducted on 23 Jan and 28 Jan 2018. Answer Key for the same has been published here.
NCO Answer Keys for Set A

NCO Answer Keys for Set B

16th NCO 2016 – 2017 Answer Keys for Class 3
NCO Level 1 Exam Answer Key 2016
16th NCO Exam for Level 1 was conducted on 13 Oct and 20 Oct 2016. Answer Key for the same is published here.
NCO Answer Keys for Set A

NCO Answer Keys for Set B

NCO Answer Keys for Set C

15th NCO 2015 – 2016 Answer Keys for Class 3
NCO Level 1 Exam Answer Key 2015
NCO Answer Keys for Set A

NCO Answer Keys for Set B

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