Tayls Posted November 9, 2015 Share Posted November 9, 2015 I have recently started a career in IT and have so much to learn. I'm currently studying for a degree but I like to read other people's thoughts on certain things. Something I am studying at the moment is all about the Internet and how it works. Does anybody have a good way of explaining it and incorporating packets into the situation? Link to comment Share on other sites More sharing options...
PompeyVillan Posted November 9, 2015 Share Posted November 9, 2015 http://www.warriorsofthe.net/movie.html In all seriousness, professor messer and eli the computer guy are a good place to start on YouTube. Link to comment Share on other sites More sharing options...
Tayls Posted November 16, 2015 Author Share Posted November 16, 2015 So, what have you guys heard about working out download speeds for a nKB file from a nMbps connection? Link to comment Share on other sites More sharing options...
darrenm Posted November 16, 2015 Share Posted November 16, 2015 Not 100% sure I understand the question but on a 10Mbps connection you can download a 1MB file in about a second. Link to comment Share on other sites More sharing options...
dubbs Posted December 15, 2015 Share Posted December 15, 2015 Not sure if you guys can help but here goes. My pc keeps randomly turning on. I'm certain it wasn't on earlier this evening but ive just come upstairs and it's on. I powered it down normally and low and behold it turns back on. It was definitely a shut down not a restart. It's running Windows 10. Maybe an interference issue with WiFi? Automatic updates? I'm stumped! Link to comment Share on other sites More sharing options...
Tayls Posted December 20, 2015 Author Share Posted December 20, 2015 (edited) On 15 December 2015 at 23:01, dubbs said: Not sure if you guys can help but here goes. My pc keeps randomly turning on. I'm certain it wasn't on earlier this evening but ive just come upstairs and it's on. I powered it down normally and low and behold it turns back on. It was definitely a shut down not a restart. It's running Windows 10. Maybe an interference issue with WiFi? Automatic updates? I'm stumped! Hi Dubbs - could be a number of reasons for that. Is it a new PC? You might need to check your task scheduler to see if you have anything set to run, and check your wake up settings - might have wake on LAN set or even the Mouse can be used to wake a PC as well.... Edited December 20, 2015 by Tayls Link to comment Share on other sites More sharing options...
dubbs Posted December 20, 2015 Share Posted December 20, 2015 It's about 12 months old. Updated to Windows 10 a few months ago. Weirdly it hasn't happened since, so I'm putting it down to updates which needed to restart to complete the installation. Freaked me out at the time though! Thanks for your reply though dude. Link to comment Share on other sites More sharing options...
MakemineVanilla Posted December 21, 2015 Share Posted December 21, 2015 (edited) On 12/15/2015 at 23:01, dubbs said: Not sure if you guys can help but here goes. My pc keeps randomly turning on. I'm certain it wasn't on earlier this evening but ive just come upstairs and it's on. I powered it down normally and low and behold it turns back on. It was definitely a shut down not a restart. It's running Windows 10. Maybe an interference issue with WiFi? Automatic updates? I'm stumped! When it happened to me, it kind of freaked me out but it turned out to be the start button shorting out on the case but I am sure there is something called a 'wake on LAN' (?) facility on some PC's so maybe it is getting turned on by something on your network? Check your BIOS. Edited December 21, 2015 by MakemineVanilla Link to comment Share on other sites More sharing options...
Davkaus Posted December 21, 2015 Share Posted December 21, 2015 In my experience, 95% of the time, this is caused by cats. 2 Link to comment Share on other sites More sharing options...
blandy Posted December 21, 2015 Moderator Share Posted December 21, 2015 On 16 November 2015 at 23:05, Tayls said: So, what have you guys heard about working out download speeds for a nKB file from a nMbps connection? It's a question with 2 answers if you use kB, and 2 different ways of getting there - Some software engineers tend to work it out as follows using binary units: 1 Byte = 8 bits. 1 kiloByte = 1024 Bytes so 1Mb = 128kB (128 x 1024 x 8) so a 1Mbps connection will download a 128kB file in 1 second and an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC. BUT Most non-softies tend to use the more commonly accepted IEEE & SI decimal based definitions of kilo and Mega (1000 and 1,000,000). Which makes the sums a tad easier. 1 Byte = 8 bits. 1 kiloByte = 1000 Bytes so 1Mb = 125kB (125 x 1000 x 8 bits) so a 1Mbps connection will download a 125kB file in 1 second Though once you get to talking about MB, the answer is the same with either definition - an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC). So if you use MB instead of kB the answer (in time) is the same for each definition, (though the amount of bits transferred is different). Confusing then. I understand the latter method is more common these days. But it still can cause confusion when you get say software engineers and (say) communications engineers potentially using different definitions of what (how many Bytes) a kiloByte is. Perhaps a softie could clarify. I'm more of a comms system engineer. Link to comment Share on other sites More sharing options...
PongRiddims Posted December 21, 2015 Share Posted December 21, 2015 So, what have you guys heard about working out download speeds for a nKB file from a nMbps connection? It's a question with 2 answers if you use kB, and 2 different ways of getting there - Some software engineers tend to work it out as follows using binary units: 1 Byte = 8 bits. 1 kiloByte = 1024 Bytes so 1Mb = 128kB (128 x 1024 x 8) so a 1Mbps connection will download a 128kB file in 1 second and an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC. BUT Most non-softies tend to use the more commonly accepted IEEE & SI decimal based definitions of kilo and Mega (1000 and 1,000,000). Which makes the sums a tad easier. 1 Byte = 8 bits. 1 kiloByte = 1000 Bytes so 1Mb = 125kB (125 x 1000 x 8 bits) so a 1Mbps connection will download a 125kB file in 1 second Though once you get to talking about MB, the answer is the same with either definition - an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC). So if you use MB instead of kB the answer (in time) is the same for each definition, (though the amount of bits transferred is different). Confusing then. I understand the latter method is more common these days. But it still can cause confusion when you get say software engineers and (say) communications engineers potentially using different definitions of what (how many Bytes) a kiloByte is. Perhaps a softie could clarify. I'm more of a comms system engineer. Always clear explanations Blandy, you're a good man. What does the role of a comms system engineer involve? Link to comment Share on other sites More sharing options...
limpid Posted December 22, 2015 Administrator Share Posted December 22, 2015 8 hours ago, PongRiddims said: Always clear explanations Blandy, you're a good man. What does the role of a comms system engineer involve? Slightly more skills and experience than a comms system technician You'd need to look at the job description; that title could mean anything. 2 Link to comment Share on other sites More sharing options...
blandy Posted December 22, 2015 Moderator Share Posted December 22, 2015 8 hours ago, PongRiddims said: Always clear explanations Blandy, you're a good man. What does the role of a comms system engineer involve? Thanks . In my case I am the avionics systems engineer responsible for the RF communications and other links on a particular type of aircraft. So specifying, system design, testing, qualifying, modifying, configuring, defect diagnostics, performance monitoring, modelling, data analysis, certification, safety work, trials support.... That kind of thing. 2 Link to comment Share on other sites More sharing options...
PongRiddims Posted December 22, 2015 Share Posted December 22, 2015 Always clear explanations Blandy, you're a good man. What does the role of a comms system engineer involve? Thanks [emoji4]. In my case I am the avionics systems engineer responsible for the RF communications and other links on a particular type of aircraft. So specifying, system design, testing, qualifying, modifying, configuring, defect diagnostics, performance monitoring, modelling, data analysis, certification, safety work, trials support.... That kind of thing. Interesting work? Link to comment Share on other sites More sharing options...
blandy Posted December 22, 2015 Moderator Share Posted December 22, 2015 49 minutes ago, PongRiddims said: Interesting work? Often, yes. Sometimes, like any job it's tedious or repetitive or mundane, but overall I like it, and at times love it. I'm lucky, I think. 1 Link to comment Share on other sites More sharing options...
PongRiddims Posted December 22, 2015 Share Posted December 22, 2015 Interesting work? Often, yes. Sometimes, like any job it's tedious or repetitive or mundane, but overall I like it, and at times love it. I'm lucky, I think. There are few that can say that so well done 1 Link to comment Share on other sites More sharing options...
blandy Posted December 23, 2015 Moderator Share Posted December 23, 2015 On 15 December 2015 at 23:01, dubbs said: Not sure if you guys can help but here goes. My pc keeps randomly turning on. I'm certain it wasn't on earlier this evening but ive just come upstairs and it's on. I powered it down normally and low and behold it turns back on. It was definitely a shut down not a restart. It's running Windows 10. Maybe an interference issue with WiFi? Automatic updates? I'm stumped! Is there a setting enabled, perhaps in bios, for "restart after power interrupt"? If so, you maybe are seeing glitches in the power supply at the socket cause it? Is there a scheduled power up time? Does it do it at the same time every day? Link to comment Share on other sites More sharing options...
darrenm Posted December 23, 2015 Share Posted December 23, 2015 On 12/21/2015 at 15:38, blandy said: It's a question with 2 answers if you use kB, and 2 different ways of getting there - Some software engineers tend to work it out as follows using binary units: 1 Byte = 8 bits. 1 kiloByte = 1024 Bytes so 1Mb = 128kB (128 x 1024 x 8) so a 1Mbps connection will download a 128kB file in 1 second and an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC. BUT Most non-softies tend to use the more commonly accepted IEEE & SI decimal based definitions of kilo and Mega (1000 and 1,000,000). Which makes the sums a tad easier. 1 Byte = 8 bits. 1 kiloByte = 1000 Bytes so 1Mb = 125kB (125 x 1000 x 8 bits) so a 1Mbps connection will download a 125kB file in 1 second Though once you get to talking about MB, the answer is the same with either definition - an 8Mbps connection will download a 1MB file in a second (this assumes no losses, bit errors, corruption etc. and no FEC). So if you use MB instead of kB the answer (in time) is the same for each definition, (though the amount of bits transferred is different). Confusing then. I understand the latter method is more common these days. But it still can cause confusion when you get say software engineers and (say) communications engineers potentially using different definitions of what (how many Bytes) a kiloByte is. Perhaps a softie could clarify. I'm more of a comms system engineer. So, assuming a small amount of errors, corruption, etc, would you say that on a 10Mbps connection you can download a 1MB file in about a second? Link to comment Share on other sites More sharing options...
blandy Posted December 23, 2015 Moderator Share Posted December 23, 2015 On 16 November 2015 at 23:05, Tayls said: So, what have you guys heard about working out download speeds for a nKB file from a nMbps connection? On 16 November 2015 at 23:43, darrenm said: Not 100% sure I understand the question but on a 10Mbps connection you can download a 1MB file in about a second. 37 minutes ago, darrenm said: So, assuming a small amount of errors, corruption, etc, would you say that on a 10Mbps connection you can download a 1MB file in about a second? Tayls asked about how to work out how long it takes. Your answer had the benefit of being succinct but approximate, Darren. Mine (perhaps) has the benefit of "showing the workings". 1 Link to comment Share on other sites More sharing options...
Davkaus Posted December 23, 2015 Share Posted December 23, 2015 It's a shame that the KiB/MiB/GiB nomenclature didn't catch on, really. 1 Link to comment Share on other sites More sharing options...
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