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the command is put in a slash question mark  laptop repair services in Hyderabad so that I can see all the various information about the different options and the syntax and all of that the very first one here you'll notice ARP - a it's to display  laptop keyboard repair in hyderabad the ARP cache ok display your ARP entries so let's actually do that I'm going to type in ARP dash a and there you go you have a bunch of entries and by the way I never know what this is going to show me and the reason why is because it is dynamic Nords it has to do with laptop screen repair in hyderabad  what IP addresses have I communicated with recently that I still have stored in this cache so let me give you an example let me go ahead and I'm going lenovo laptop service in Hyderabad to open up Internet Explorer and let's do something like I'll just go to Google now why am i doing this I'm doing this just because it closed this I just wanted to make connectivity outside of my network and when I want to show you here if I come back and laptop repair centre in Hyderabad  do the ARP - a command again no I don't get an entry for Google or for Google's IP address that's because I'm on an internal network what I did get was the IP address of my router because that's apple laptop service  in Hyderabad what my computer communicates with via MAC address only things on my network ok so apparently I had not communicated with my router in awhile and so it wasn't on the list whereas now it is you'll notice it's dynamic now another thing that I can laptop screen repair in hyderabad  do here is if I were to type in ARP - D that's for delete and I can put in you know what let's use the same one the IP address of the router 192.168.1 watch what happens here I actually get  toshiba laptop repair in hyderabad an error and this is something very important to pay attention to because once you get to Vista and Windows 7 and Windows 8 and other server based operating systems as well certain commands are protected because they don't want you to cause damage or at least in one an average person to cause damage and they required elevated privileges so acer laptop repair in hyderabad  in order to be able to use these elevated privileges I'm going to close the command prompt and this time when I go to open it I'm going to right-click on it and computer repair services in Hyderabad  select run as administrator now I am an administrator so it's just going to say are you sure and I'll say yes if I was not an administrator on this computer it would prompt me for credentials at this point I'm going to go ahead and put ARP - a just to show that the table is still the same and now hp laptop service in Hyderabad  I'm going to put in ARP - d1 ninety two dot one sixty eight dot 10.1 hit enter and look at that it looks like nothing happened right you don't get a confirmation you don't get in there but something did happen because if I put in ARP -  lenovo laptop service center in Hyderabad a again you'll notice that 10.1 is gone now you may remember that when I typed in this command the first time 10.1 was not there these dynamic entries will disappear if I don't have communication with them the point behind using the - D command and manually deleting an entry is if you saw something that was just wrong dell laptop service center in Hyderabad  and you didn't want to wait a certain amount of time to let it disappear on its own I'm not going to go into any more detail here on the ARP command because I will tell you that this is somewhat you know kind of a thing of the past I mean  laptop motherboard repair in hyderabad the command is still valid the tool still has the same purpose it's just the way things have moved into such an overall dynamic environment it's very rare that you'd have to come in here and manually manage the ARP cache now the next command I'm going to show you and then I'm going to actually come back to art for just  laptop repairing in hyderabad a quick moment the next command I want to show you is the ping and so I'm going to just type in ping and then an IP address guess which one I'm going to do hp laptop service center in Hyderabad the router ok I'm going to put in one ninety two dot one sixty eight dot 10.1 I'll hit enter and you'll see I get these replies remember I said this is the link most simplistic yet most important tool and most powerful tool there is ok because this is showing connectivity this is proving with these replies that I have connectivity with hp laptop service center Hyderabad  my router when it comes

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