computer puzzle

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Across
  1. 2. more flexible than the stack
  2. 4. first country to approve a vaccine against Covid-19
  3. 5. A new Data Recovery Centre
  4. 7. technology company launched health monitoring device ‘Halo Band’
  5. 8. data structure wherein elements can be inserted or removed from either end
Down
  1. 1. is a function that calls itself based on a terminating condition
  2. 3. company launched the ‘More Together’ campaign in India
  3. 6. JPG extension refers usually to what kind of file