Hi I was wondering, I'm reading about networking (hubs). They transmit data from 1 device to another but, do they give internet access? Or you need to add a router to it?
I have another question, when you do a tcp connection (connect to a website) and close the tab, does it send a fin packet or, on the server side, get timeout and end the connection?
by tab I mean open a firefox window, go on youtube.com then close the firefox window. Does it end the tcp connection with RST, FIN/ACK and ACK, or is it timeout?
@qasdfdsaq And answering the question as-is in that way is incredibly unhelpful. I encourage you to adopt the habit of appending “…or…?” to such questions.
@qasdfdsaq From my very unscientific test of one implementation under one set of conditions, RST. Off the top of my head, this makes sense: the connection should be closed quickly, to conserve bandwidth (and, actually, doesn't FIN only close one side of a connection?).
One reason a browser might not want to do that is in the spirit of HTTP keep-alive: if there isn't much more of the resource left to retrieve, it might just receive the rest of it, then keep the connection open so as to reuse it later. I don't know for sure that any implementation actually does that, though.
In modern browsers a tab is really just a viewport.
On the one end, you are opening and closing a viewport into a chunk of memory. On the other end, part of the browser is generating an image in memory based on data it gets from the webserver.
Closing a tab would normally tell the "backend" to stop what's doing and cancel. If a web page was still in the process of loading, then yes, it should close connections and clean up after itself. Except when it doesn't.
But the backend could also be doing something completely unrelated at the time, such as reading from cache, generating content locally, or making DNS requests that have no TCP connections.
Also there's persistent shit and client-side web applications and all that voodoo
There's also that well, if it's almost done downloading anyway thing. If a page had an inline image that was almost done downloading, letting it finish, caching the image, and keeping the connection open might be a better idea than killing the connection (not that browsers can think for themselves like that)
Now I'm curious as to whether any browser actually does this.
If an application is closed then it should terminate all connections it still has open. Even if the application itself doesn't close the connection properly, Windows will do it for you.
Line-rate Layer 2 switching: Standard Line-rate Layer 3 routing: Standard CPU Memory: 2GB Flash Memory: 256MB Packet Buffer Memory: 9MB Dual firmware images on-board: Standard Temperature sensors for environmental monitoring: Standard Cable diagnostics: Standard Optical transceiver (SFP/SFP+) diagnostics: Standard Switch auditing support: Standard UDLD: Standard
Although quite why we have a completely unused 24-port 40-gigabit Infiniband switch, sitting unused, not connected to anything, and not on the inventory puzzles me.
Sure, the world may be moving to lighter, lower-power systems, but allowing one unified connector to serve even high-power devices would be a boon for everyone.
It would dramatically simplify connectivity. High-power devices can simply refuse to charge, charge slowly, or even just discharge the battery slower (drawing power from both battery and USB) if they are plugged into a USB power source that isn't powerful enough.
Why would we want to put a bigger connector on all devices (including phones, tablets, etc.) for the potential benefit of a few gaming laptop owners who probably wouldn't benefit from it anyway.
'Burning' a iso to USB atm so I can install a clean windows 10. If that works (withou registration issues) I will change the disk with the SSD currently holding win10
You know you've been playing/watching too much Hearthstone when someone yawns at work and you immediately expect them to say "I am NOT a morning person."
@bwDraco and yet 16GB NAND is enough for anyone, right?
This highlights the need for Google to allow larger or more APK expansion files. (Google may need to charge developers a nominal fee for each app that needs more than 4 GB to cover the cost.)
> But mobile gaming is quickly becoming complicated. Whereas the platform was once synonymous with simple distractions like Angry Birds, Doodle Jump, Bejeweled, and other games your trusty iPhone 3G could run without a problem, newer titles (particularly adaptations of console and / or PC games) require increasing amounts of space and processing power. A growing number of mobile games won't even run on my iPhone 5 anymore.
AAA gaming on mobile and all the issues that go with it.
Note: This is intended to become a canonical post.
I got a graphics card of type XXX and it claims I need at least a YYY Watt PSU.
How big does my PSU really need to be?
"Computers would be nice if they didn't have a CPU, RAM, storage, input, output, networking and didn't use electricity" " SE would be nice if it didn't have questions, answers or users. "
Actually I'd rather vote-to-close based on the fact it's highly opinion based and has already attracted a ton of poor opinions stating incorrect information.
In fact the ridiculous levels of PSU overprovisioning is probably one of the things I find most infuriating.
It's important to account for possible upgrades and to have some headroom for reliability and efficiency, but using a 1000W PSU to run a single-GPU machine is not necessary.
A heavily overclocked will use up to 150-200w more than the stock rating but if you are overclocking that far, you'd better know what you're doing.
Because you'd have to be using liquid nitrogen or other sub-zero cooling to even get close.
And if you're a professional/competitive overclocker... well you don't need to listen to me.
Realistically most good quality power supplies will provide 20% MORE than their rated power. I haven't seen a single power supply tested by a professional review site lately that did not provide more than its rated power.
A high-grade gaming machine with a pair of GTX 980 cards and HEDT processor (e.g. i7-5930K) should be expected to need about 600 to 650 watts under full load.
Bosy, girls. Post it in an answer. And I happily up to bounty. But as it is most answers are not up to par and most bloody answers on the rest of the site suck goat balls.
So Dell will sell you an enterprise server with two 300w graphics cards and two 105w processors with a 1100w PSU. That includes a pile of 15k RPM SAS drives, a 6.4TB SSD and 10GbE network cards.
That's basically 550w for a high-end 8-core CPU, a graphics card 20% more powerful than a GTX 980 Ti, high end hard drives, SSDs, and 10GbE networking. In an OEM certified enterprise server, designed to run 24/7 under heavy load in 40'c room temperature.
Note: This is intended to become a canonical post.
I got a graphics card of type XXX and it claims I need at least a YYY Watt PSU.
How big does my PSU really need to be?
