Struck every answer out and advanced (2,4)
I believe the answer is:
hi tech
'advanced' is the definition.
(advanced technology)
'struck every answer out' is the wordplay.
I cannot really see how this works, but
'struck' could be 'hit' (I've seen this in another clue) and 'hit' is located in the answer.
The remaining letters 'ech' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for hi tech that I've seen before include "Making use of up-to-date resources" , "industrial design" , "Sophisticated electronics" , "furnishing style" , "Making use of sophisticated equipment" .)