SSC Delhi Police Head Constable (Ministerial) 2025 Mock Test (New) Computer Awareness Operating Systems

ਇਹਨਾਂ ਵਿੱਚੋਂ ਕਿਹੜਾ ਇੱਕ ਓਪਰੇਟਿੰਗ ਸਿਸਟਮ ਨਹੀਂ ਹੈ?

1
ਐਂਡਰਾਇਡ
2
ਸਕੇਲਾ
3
UNIX
4
ਵਿੰਡੋਜ਼
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