IPT question help- HSC Q6 (2019 paper) (1 Viewer)

queenb_3

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Hi guys,

Could someone help me with the following question please, and provide worked solutions (attached- it’s from the 2019 HSC paper Question 6)?

Thank you
 

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cossine

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The size is given in bytes.

Each variable size is given in bytes. So if take you the ASCII code you will see each character is 1 byte e.g. 0000000 contains 8 bits as there are 8 binary digits. This is equivalent to 1 byte as 8 bits = 1 byte.

Each record contains 10+ 8+ 5 + 4 Bytes.

There 512 records so the total number of Bytes is 512*(10+8+5+4).

We know 1024 bytes = 1 kB (kilobytes)


=> 1 btye = 1/(1024) kB

=> 512*(10+8+5+4) = 512*(10+8+5+4) / (1024) kB

So the answer is D
 

queenb_3

Active Member
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Sep 7, 2019
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2020
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2025
The size is given in bytes.

Each variable size is given in bytes. So if take you the ASCII code you will see each character is 1 byte e.g. 0000000 contains 8 bits as there are 8 binary digits. This is equivalent to 1 byte as 8 bits = 1 byte.

Each record contains 10+ 8+ 5 + 4 Bytes.

There 512 records so the total number of Bytes is 512*(10+8+5+4).

We know 1024 bytes = 1 kB (kilobytes)


=> 1 btye = 1/(1024) kB

=> 512*(10+8+5+4) = 512*(10+8+5+4) / (1024) kB

So the answer is D
Thank you so much!
 

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