Wednesday, 24 January 2018

WHAT IS CAPTCHA

 ek website programmer ke liye captcha ka mahtva bahut jyaada hai  aakhir captcha kya hai? to chaliye captcha ke baare mein hindi mein samajhate hain website ya blog ki suraksha ke liye captcha bahut jyaada mahatvapoorn hai hamame se lagbhag sabhee ne isse pahale internet ka is‍temaal karate vak‍ta in‍he dekha aur prayog kiya hoga, lekin k‍ya aap jaanate hai captcha k‍ya hai aur k‍yo is‍temaal kiye jaate hai?


CAPTCHA KYA HAI
online form bharte vaqt ya kisee website mein apana account banaate vaqt , ya kisee blog mein apane comment ko enter karate vaqt ya irctc jaisee website se ticket book karate vaqt aapako kuchh scramble shab‍d dikhaee dete hai aur aapako unhen form mein bharana padata hai  aise shabd jo aapko dekhkar type karane hote hai in‍he hee ham captcha kahate hai


captcha asal mein ek program hota hai, jo tes‍ta aur gred taiyaar karate hai jo sirf manoosh‍ya paas kar sakate hai par computer nahee aasaan shabdo mein captcha yah shab‍da satyaapan pareekshan hai jo keval manushy padh sakate hai aur isakee pushti kar sakate hain. lekin koyee bhee computer nirmeet prograam ise nahin padh sakte hain aur satyaapit nahin kar sakate kyoki inhen aisa banaaya hee jaata hai

CAPTCHA KA FULL FORM KYA HAI?
captcha ka full form hai completely automated public Turing test to tell computers and humans apart aur ise san 2000 mein banaaya gaya| isaka pehla is‍temaal yaahoo mein hua


CAPTCHA ZAROOREE KYON HAI
spam programs se apane mail server ya web server ko bachaane ke liye ham captcha ka use karte hain captcha ke prayog se ham ye sunichit karate hain ki hamaare web server ya mail server mein jo user enter kar raha hai kya vo ek manushy ya koyee program ya  nukasaan daayak program dwaara entry ko ham” bot attack” kehate hain aur isame apne aap ek saath hajaaro email account ke liye signup ho jaata hai | isaliye adhik suraksha kee jaroorat ko poora karne ke liye captcha ka vikaas kiya gaya  captcha ke kayee format upalabdh hai

to doston ye thee captchaake baare me jaanakaaree hindi mein ki captcha kya hai aur captcha kyon banaaya jaata hai captcha se sambandhit kisee savaal ke liye comment box mein comment likhe



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