[IOWA MRS]

I took this exam and missed 4. 80% Not sure though what I missed or if I need or can take it again. I thought I got a Guru certif something showed up embeded. Didn't know what it was. But I think that is only for over 80%. I think I missed the Megaherz or ghertz questions. Need to go back and read about that. Can this be taken again?

[popeye67]

Dont think i did much better, if i did do any better.

[Troubleshooter]

That gigahertz/megahertz question got me too. I think it's a trick question so nobody ever gets 100%.

[popeye67]

1000 megahertz = 1giga hertz, or it was when i went to school, cant see the point if it doesnt tell you what you got wrong

[LuckyBytes]

Question 4 of the advanced test asks for how many megabytes in 1 gigabyte. 1024 is what I would choose, but that answer is not listed.

[Asus]

here for future use guys

Officially, there are 1000 (10^3) megabytes (MB) in a gigabyte (GB). So 500MB would equal 0.5 GB.
(the (10^3) is saying 10 cubed, 10 with exponent of 3)

This definition is used in hard drives, portable memory drives (memory cards, USB drives), DVDs, Blu-ray disks, and most measures of performance. Some software (such as Mac OS X and the Linux kernel) uses this definition when displaying file and disk sizes.

Memory manufacturers use 1024 (210) megabytes per gigabyte, but this is more properly called a gigabinary byte (GiB), sometimes contracted to gibibyte.
Examples:

* 1,000 megabyte (MB) = 1 gigabyte (GB)
* 1,024 mebibyte (MiB) = 1 gibibyte (GiB)
* mega- = 1,000,000
* giga- = 1,000,000,000
* mebi- = 1,024 × 1,024 = 1,048,576
* gibi- = 1,024 × 1,024 × 1,024 = 1,073,741,824


Memory manufacturer definition

These are the definitions used by memory manufacturers and software like Microsoft Windows.

There are exactly 1024 megabytes (MB) in one gigabyte (GB)

MB stands for megabyte. Lowercase Mb has been used for both "megabyte" and "megabit". (Writing bytes as MB and bits as Mbit avoids any ambiguity.)

GB stands for gigabyte. Lowercase Gb has been used for both "gigabyte" and "gigabit".

1 megabyte = 8 megabits

1 megabyte = 1024 kilobytes

1 gigabyte = 1024 megabytes or 8192 megabits