কম্পিউটার ও তথ্য প্রযুক্তি - Read Mode
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Explanation
.php is a server-side scripting language file extension, not an image format. .gif, .jpeg, and .bmp are all common image file formats.
Explanation
Spam refers to unsolicited commercial email (UCE), often sent in bulk to a large number of recipients who have not requested it.
Explanation
Standard Unicode (UTF-16 basic plane) uses 16 bits to represent a character, allowing for 65,536 unique characters.
Explanation
Google is a search engine (though Chrome is their browser), while Firefox is a web browser. Therefore, only II (Firefox) is explicitly a browser here.
Explanation
HTML (HyperText Markup Language) is the standard markup language for creating web pages and web applications, essential for web design.
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Data in computers is stored in Binary form, using a series of 0s and 1s to represent all information.
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RAM (Random Access Memory) is primary or volatile memory, not secondary storage. Hard disks, tapes, and CDs are secondary storage.
Explanation
DVD ROM uses laser light to read/write data, making it an optical storage device. SSD is flash memory, EPROM is chip memory.
Explanation
The COUNTA function counts cells containing any type of information, including error values and empty text (""). Effectively, it counts non-empty cells.
Explanation
In Excel, formulas must start with an equals sign (=). So, =sum(c9,c12) is the correct syntax to add the values in those cells.