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 Post subject: ipconfig /flushdns
 Post Posted: Mon Mar 17, 2008 1:27 am 
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Joined: Thu Mar 08, 2007 11:32 pm
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Hi Scott,

What does ipconfig/flushdns do? My ISP member told me it increases the speed for surfing. Is it true?

-- Kit


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 Post Posted: Mon Mar 17, 2008 9:32 am 
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That command flushes the DNS resolver cache. The Windows DNS resolver checks the cache before querying a DNS server, which speeds up queries and decreases network traffic.

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My ISP member told me it increases the speed for surfing. Is it true?

No, in fact it will do the opposite until the DNS resolver cache is reloaded.

Note that the DNS resolver automatically discards records from the cache after the amount of time specified in the Time to Live (TTL) associated with the record, so manually flushing the cache is not normally necessary or recommended. If you do flush the cache, the system must query DNS servers again for any DNS resource records previously held in the resolver cache. Scott.


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 Post Posted: Mon Mar 17, 2008 10:48 am 
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Scott wrote:
No, in fact it will do the opposite until the DNS resolver cache is reloaded.


So, it will decrease the speed instead?

My EDGE modem maximum speed is 460.8kps, but it is not running even at a 1/4 speed. What might be the problem?


Thanks,

-- Kit


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 Post Posted: Mon Mar 17, 2008 12:12 pm 
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What speeds are others experiencing using the same equipment in your area?

The actual bandwidth you get from a wireless modem depends on several factors, most of which are out of your control given a specific modem or service. Maybe a different modem and/or service would offer better performance? Here are reviews of several alternatives:

Say Good-Bye to Wi-Fi
http://www.pcmag.com/article2/0,2817,2251606,00.asp

High-Speed Wireless
http://www.pcmag.com/article2/0,2817,2162525,00.asp

Scott.


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 Post Posted: Mon Mar 17, 2008 1:01 pm 
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Thanks Scott,

Am not aware of anybody using the same service in my area.

May be it's high time, I considered the second alternative <g> .

What is HSDPA? Does it require a modem also?

-- Kit


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 Post Posted: Mon Mar 17, 2008 1:24 pm 
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HSPA (High Speed Downlink Packet Access) is part of the HPSA GSM 3G network: http://hspa.gsmworld.com

To use it, you need a mobile device that is HSPA-enabled: http://hspa.gsmworld.com/devices

Scott.


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 Post Posted: Tue Mar 18, 2008 12:38 am 
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Hi Scott,

Thanks for the information.

-- Kit


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