1.How many kilobytes are in 2 gigabytes?
2.Why does cache have less capacity than a hard disk?
3.Why did Unicode replace ASCII as the standard?
4.What is a key limitation of BCD compared to ASCII?
5.How does Unicode ensure compatibility with ASCII?
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1.
Answer: 2 GB = 2,097,152 KB.
Description: 1 GB = 1,048,576 KB (1024 × 1024), so 2 GB = 2 × 1,048,576 = 2,097,152 KB.
Description: 1 GB = 1,048,576 KB (1024 × 1024), so 2 GB = 2 × 1,048,576 = 2,097,152 KB.
2.
Answer: Cache is small (e.g., MBs) for speed near the CPU, while hard disks (TBs) are designed for long-term, large-scale storage.
Description: Cache prioritizes quick access over size; hard disks focus on mass storage, not speed.
Description: Cache prioritizes quick access over size; hard disks focus on mass storage, not speed.
3.
Answer: Unicode supports over 1 million characters, covering all languages, while ASCII’s 256-character limit was insufficient globally.
Description: ASCII worked for English but failed for multilingual needs; Unicode’s scalability solved this.
Description: ASCII worked for English but failed for multilingual needs; Unicode’s scalability solved this.
4.
Answer: BCD (Binary-Coded Decimal) uses 4 bits per digit (0-9), limiting it to numbers, while ASCII encodes letters and symbols too.
Description: BCD is inefficient for text (e.g., ‘A’ isn’t representable), unlike ASCII’s broader character set.
Description: BCD is inefficient for text (e.g., ‘A’ isn’t representable), unlike ASCII’s broader character set.
5.
Answer: Unicode’s first 128 characters match ASCII’s 7-bit codes, ensuring older ASCII text works in Unicode systems.
Description: This backward compatibility allows seamless integration of legacy systems with modern global applications.
Description: This backward compatibility allows seamless integration of legacy systems with modern global applications.
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