12,359 reputation
115088
bio website andrejako.users.sourceforge.n…
location Belgrade, Serbia
age 25
visits member for 4 years, 7 months
seen Dec 23 at 15:46

I'm electrical engineering student specializing in computer networking.

I'm also an amateur radio operator, callsign YU1NKA.


Nov
15
comment What information can my ISP see from my router?
@JakeGould That's how it's supposed to work, but in practice MAC address conflicts do appear, it's just that they are very hard to detect, unless it happens on computers which are on the same subnet. And then, you also have the "wild" manufacturers which use unregistered OUIs and have same MAC address on all (most?) of their products. This actually happened with some lab equipment that I have. Therefore I believe that your statement is a bit too optimistic.
Nov
2
comment Is there still a reason to choose a 10,000 RPM hard drive over an SSD?
@DragonLord Why would a gaming desktop, powered by a switch-mode power supply, require a "sine-wave" input?
Oct
3
comment How to determine what's trying to access my optical drive (emits unusual sounds)?
Unfortunately, none of the offered programs were helpful. When the drive emits sounds and there's no disk in the drive, Process Monitor shows nothing. During the past few days, the drive spun up with a disk in it only once, but I was unable to start Process Monitor quickly enough to catch the event.
Oct
3
comment How to determine what's trying to access my optical drive (emits unusual sounds)?
The sound is the same as when optical drive is initializing. In my case, I have a laptop, and the connection between the drive and motherboard is a solid PCB. I've checked it and it looks good. I've heard reports of other users of same model of computer with different optical drive having same issue.
Sep
26
comment How to determine what's trying to access my optical drive (emits unusual sounds)?
@UltraDEVV It's a good idea to try with another OS. About the brand, well I don't see what the big problem is. Perhaps it's a more local thing, but in my circles Toshiba has good reputation, and Samsung has 0% market share penetration in laptops. Local issues maybe?
Sep
22
comment I broke the USB port on my external HDD. What do I do?
There are two ways you can go to fix this: The simple way and the complicated way. The HDD is a SATA HDD, so you can just disconnect the disk itself, find a desktop computer or another enclosure and insert it there. The more complicated way would be to repair the USB connector itself. To me, it looks repairable, but to be sure, I'd need better picture of the connector's footprint on the PCB, especially near the part marked P2 and of the back side of the connector itself.
Jul
21
comment How many watts do case fans generally use?
@Cees Timmerman Indeed! That's 18 W per fan. Multiple fans and optimistically rated power supply can produce very interesting results, especially of the rest of the computer is hungry as well.
Apr
26
comment I have to cycle my LCD monitor's power on and off to get it to stay on
@Sampo Sarrala Anyway, my point is that learning how to solder just in order to save money on capacitor repair is false economy. On the other hand, if someone is already in electronics, then it's not as problematic because the basic foundations will already be there.
Apr
26
comment I have to cycle my LCD monitor's power on and off to get it to stay on
@Sampo Sarrala Then we have the problem of iron being fit for the job of working with the capacitor: Too powerful and non-temperature controlled as well as too weak can result in damaged PCB. Next, there's the knowledge needed to pick and install a replacement capacitor. Again, getting a capacitor from eBay or similar source can be problematic and it takes some experience to find a reliable distributor of safe capacitors.
Apr
26
comment I have to cycle my LCD monitor's power on and off to get it to stay on
@Sampo Sarrala I wholeheartedly disagree with such comment. I don't think it's safe for someone who doesn't already have experience using soldering iron to attempt to replace capacitors. First problem is the iron itself. A beginner won't be able to see difference between dx.com junk that will catch on fire and dx.com junk that won't catch on fire. Next, there's some training that's needed in order to be able to actually desolder a capacitor from a PCB without damaging the PCB itself. Lifted traces aren't going to make repair any easier.
Dec
12
comment Can anyone explain to me what happened to my flash drive?
Looks like this was it. I just wasn't paranoid enough with the flash drive.
Dec
12
comment Can anyone explain to me what happened to my flash drive?
Yeah, it's been so long since I used a public computer that I completely forgot about possibility of malware running on it.
Dec
12
comment Can anyone explain to me what happened to my flash drive?
@Gotschi I'm sorry, I meant when I use the shortcut.
Nov
8
comment Is there a limit to how many separate wifi networks can successfully and securely operate within a given (building) area without interference issues?
This takes care of interference problems, since in such setups lightweight access points would be aware of eachothers's signal and using the control point can be adjusted to reduce their own transmit power so that the interference is minimized. If you have a large area which you yourself can administer, that can work well. If you can use 5 GHz, it can work even better due to larger number of channels and worse propagation on that band resulting in less interference.
Nov
8
comment Is there a limit to how many separate wifi networks can successfully and securely operate within a given (building) area without interference issues?
What I've seen used the most in such setups and with most success is the use of sort of light weight access points that are connected together over wired Ethernet. They are then connected to a central controller from which the network can be administered. In the older systems, you'd place a hexagonal honeycomb-like structure over the floor-plan and then set a frequency and power for each cell, so that adjacent cells have different frequencies. Today, smarter systems can do that on their own.
Nov
8
comment Is there a limit to how many separate wifi networks can successfully and securely operate within a given (building) area without interference issues?
Anyway, what I find very strange is the term WAP-Repeater. It's pretty ambiguous (but I could be wrong). It can mean a wireless range extender that just picks up existing signal, amplifies it and re-broadcasts it, but those work on the garbage in, garbage out principle and are in general very bad. The other option would be a more active device which actually does some processing on the signal, but still those are pretty bad as well, since they usually rely on transporting actual consumer data over WiFi, which takes up bandwidth.
Nov
8
comment Is there a limit to how many separate wifi networks can successfully and securely operate within a given (building) area without interference issues?
I personally don't like this question. There's much stress on the importance of fixing the issue (which is understandable) and the scale of the issue, but there's no information about the equipment used, there's no information about any type of band planning used, no diagrams of logical of physical connection between units, so there's very little that can be done at this point to help solve the issue other than some very general explenations.
Aug
22
comment What settings to use when making 7zip files in order to get maximum compression when compressing PDFs?
@Cole "Cole9" Johnson Well the difference is that in my case I used some "other" tools from PeaZip that did not have a GUI at the time. If I remember correctly back then only PeaZip offered PAQ8O algorithm with a GUI.
Jul
4
comment How do I clean up COM ports in use?
Looks interesting! I'll try it out and report the results.
May
2
comment USB 2.0 device on USB 3.0 Power and Data Bandwidth
There is a difference in USB 2 and 3 cables. The cable's characteristics are different and it has more pins, so you should use USB 3 cable to connect USB 3 hub to USB 3 port.