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Some i-Net questions I have
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| Could someone help me out on these please?
1. How do you calculate how many seconds it takes to download a ??? byte file with a ??? modem?
2. What DNS record tells you who is responsible for a domain?
3. What is the JPEG color depth?
4. What exactly is a Network Address Translation Service?
5. Who approves the standards for anti-virus software?
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| I found #4. Network Address Translation Service is a device that enables a range of private IP addresses on an intranet, while still allowing IPs for the Internet. | |
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| #2 -> SOA (Start of authority)
#3 -> JPEG, i think it's 16 millions colours.
hope that helps.
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Read, Study, and Practise - GOODLUCK!
Weblord, MCP, Network+, I-Net+, CNS | |
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| [QUOTE]Originally posted by Dude:
[B]Could someone help me out on these please?
1. How do you calculate how many seconds it takes to download a ??? byte file with a ??? modem?
First some basics.
Modems usually works with async.protocol-
this means it uses (mostly) one startbit and one stoppbit.
A byte is eight bits. So we end up with the conclusion - A modem transfers totaly 10 bits to transfer a byte. So for an exampel a 7000 byte big file consists of 70000 bits when transferd in any direction.
A 56k modem will take 70000/56000 = 1.25 secunds to transfer the file (hope this helpt) | |
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| [QUOTE]Originally posted by Dude:
[B]Could someone help me out on these please?
3. What is the JPEG color depth?
An JPEG has 24-bit colour depth. Yes It is
16 millions colours (2 pow 24).
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| [QUOTE]Originally posted by Dude:
[B]Could someone help me out on these please?
2. What DNS record tells you who is responsible for a domain?
I think you mean RP Responible Person, but look It out for you self at http://www.update.uu.se/~twq/books/...ind/appa_01.htm
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