Which technology is used in computer disks ?

A Mechanical
B Electrical
C Electro Magnetic
D Laser

Correct Answer: Laser

CD (Compact Disk) - এ লেজার প্রযুক্তি ব্যবহৃত হয়। CD - এর ট্র্যাকগুলো তৈরি হয় ১ - ২ মাইক্রন দৈর্ঘ্য, ০.৫ মাইক্রোন চওড়া এবং১/১০ মাইক্রোন গভীরতা বিশিষ্ট ক্ষুদ্রাকৃতির গর্ত বা পীটস্ দ্বারা।
Bissoy MCQ
#তথ্য প্রযুক্তি #Bangladesh Bank #CD ROM #Bangladesh Bank - IT - 2016

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A Data bases are singing instrumant
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You create home directories for users Jan and Kim on a Windows NT Server computer. Jan works on a Windows NT Workstation computer. Kim works on a Microsoft Windows for Workgroups computer. After they log on, Jan can access her home directory, but Kim cannot access her home directory. What should you do?
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