Dynamic IP vs Static IP

While I was on the look up of an ip address to check on this guy where I was downloading his slow files, question about why do I need an static ip and not a dynamic, what are they difference between them?which provide the best file sharing and so on,

Static IP addressing is for one customer on one IP address and Dynamic IP addressing assigns a different IP address each time the ISP customer logs on to their computer, but this is dependent upon the Internet Service Provider (ISP) because some ISP's only change the IP address as they deem it necessary.

If you have Dynamic IP Addressing through your Website Host it means that you are sharing an IP Address with several other customers.

If you are a beginner on the internet, an avid internet user, are entertaining the thought of starting your own website business, are a gamer, use VOIP or VPN there are several things you should know about IP Addressing.

Static IP Addressing

If you feel the need to always know what your IP address is then you need a Static IP address, because it is constant. Static IP addresses are more reliable for Voice over Internet Protocol (VOIP), more reliable to host a gaming website or to play X-Box, Play Station, use Virtual Private Network for secure access to files from your company network computer, etc. Static IP addresses are also great if you use your computer as a server, as it should give your file server faster file uploads and downloads. Another plus with Static IP's, when hosting a website you are not sharing your IP with another company who sends out a lot of E-mail SPAM and not only has their website been shut down but in turn gets your IP address blacklisted.

In contrast a static IP address can become a security risk, because the address is always the same. Static IP's are easier to track for data mining companies. Static IP addressing is less cost effective than Dynamic IP Addressing.

Dynamic IP Addressing

The biggest advantages of Dynamic IP Addressing are less security risk as the computer is assigned a new IP address each time the customer logs on, they are cost effective and there is automatic network configuration (the less human intervention with network configuration the better). Dynamic addressing is usually used by ISP's so that one IP address can be assigned to several users, however some ISP's use Sticky Dynamic IP Addressing and do not change the IP address very often. Dynamic IP Addressing can be used by families with several computers or by a small business owner who has a home office. The software that comes with a router allows for Dynamic Host Configuration Protocol (DHCP) setup and assigns each computer attached to the router an IP address automatically.

In contrast, Dynamic IP addressing should not be used for VOIP, VPN, playing online games or game hosting because Dynamic IP addressing is less reliable then Static IP addressing and could cause the service to disconnect while you are on a VOIP, VPN or gaming.

Related Articles

• What is DHCP?
• What is a IP address?

Retrieved from url

http://whatismyipaddress.com/dynamic-static

Realistic 3D pictures

Art attack! (Picture: WENN.com)

Alison Lynch for Metro.co.ukWednesday 26 Nov 2014 2:26 pm

Ramon Bruin’s sketches really leap off the page.

Mostly because the Dutch artist, who’s largely self-taught, specialises in 3D optical illusion drawings.

Blurring the line between art and reality, Bruin uses a trompe l’oeil effect to make his sketches really pop.

Butterflies flutter off the page, buildings stand several stories tall and Great White sharks circle menacingly on the sketch pad.

To bring the drawings to life, he uses shading techniques and then photographs them from just the right angle. Thereby creating his signature optical illusion effect. He sometimes adds props like pencils into the composition to further blue the lines.

Bruin’s 3D drawings have been making ripples in the industry since he broke through with his optical illuson style in 2012 (Picture: WENN.com)

What, this old thing? (Picture: Wenn.com)

A boat setting sail from his desk (Picture: WENN.com)

He uses a combination of graphite and colored pencils, ink and acrylics for his drawings.

And now he’s experimenting with a new style – multi-layered illusion. Here, he draws on multiple sheets of paper to create a layered 3D effect. Which means he can draw buildings rising up from the page.

Using his new multi-layered technique, he creates a multi-story factory (Picture: Wenn.com)

Save yourself Lego man (Picture: WENN.com)

Ramon said: ‘My wife thinks my artwork is very impressive. She sees me working but it is still hard for her to distinguish whether what I have on the paper is drawn or real.’

Fine if it’s a tiny boat. Slightly disconcerting if it’s a Great White shark circling on your dining room table.

Ramon can even fall out with himself (Picture: Wenn.com)

NASA Employee Says She Saw Humans Walking On Mars In 1979

By Afza Fathima | November 26, 2014 8:00 PM EST

A woman named "Jackie," who claims to be a former NASA employee, called Coast to Coast AM in the U.S. She claimed she had seen evidence of two human figures walking towards the Viking lander on Mars in 1979.

The "former NASA employee" asked the radio show presenter to solve a 27-year-old mystery for her. She claimed she had worked for NASA and that her job was to handle the downlink telemetry from the lander. The Viking lander was the first vehicle to send back pictures of the surface of the Red Planet.

She said that while she was working, she saw two people walking across the Martian surface. She continued that she and six colleagues were watching the footage of the Viking rover moving around on multiple screens when she noticed two men in spacesuits walking to the Viking Explorer from the horizon. She added the men's suits looked protective but unlike what astronauts wore.

The "former NASA employee" said she and her colleagues were maintaining the equipment when suddenly the video feed got cut off. She went on to say that when they ran upstairs, they found the door was locked and paper was taped over the door so nothing could be seen. She posed a question to the radio presenter asking whether or not the two men she saw were guys from NASA. The agency has yet to comment on the claim.

Blogs that report on UFO and conspiracy theories have backed the "former NASA employee." They claimed humans had been on Mars to polish off the lander's solar panels.Metro.co.uk wrote that this seemed off because if the humans were there, they could have filled petrol into the lander or take photos themselves. A few other conspiracy theorists claimed that in the sixties, there were secret landings on Mars. They further claimed that the Apollo landings were a cover-up for wider exploration of the solar system.

An audio recording, titled "NASA Worker Sees Men Walking Over To Viking Lander On Mars", was posted on YouTube by YouTube channel Starman Chronicles. The video has managed to get more than 11,000 views and about 16 comments as of this writing. Listen to the audio recording below:

retrived from 

http://au.ibtimes.com/articles/574079/20141126/woman-former-nasa-employee-humans-mars-1979.org#.VHaHdjHF_uw
https://metro.co.uk/2014/11/25/nasa-worker-claims-to-have-seen-humans-walking-on-mars-in-1979-4961608/

Cat3 vs Cat5 vs Cat7

CAT3 vs. CAT5 vs. CAT5e vs. CAT6 vs. CAT6e vs. CAT6a vs. CAT7

While the consumer electronics keep going increasingly wireless, many LANs still rely heavily on CAT cables to handle all the heavy lifting when it comes to transmitting data. To begin with, all Ethernet cables are of two key varieties i.e. UTP (unshielded twisted pair) or STP (Shielded twisted pair) variety. They all have the same construction structure, but vary a great deal as far as transmission frequency and throughput are concerned.

However, some terms need to be defined before any meaningful comparison can be presented:

How to interpret Ethernet cable Speed?

• 10 Mbps = 1.2 MB / s i.e. 1 hour to download a DVD (4.5 GB)
• 100 Mbps = 12 MB/s i.e.  1 hour to download 10 DVDs (assuming 4.5 GB average)
• 1.0 Gbps = 125 MB/s i.e. 1 hour to download 100 DVDs (assuming 4.5 GB average)
• 10 Gbps = 1.25 Gbps i.e. 1 hour to download 1000 DVDs (assuming 4.5 GB average)

What is Frequency?

Imagine you can only drive two cars, one passenger each, at a given time on a highway in each of the two lanes. Now you would be able to transfer more people over the same highway if you can drive the same two cars 500 trips per day compared to 250 trips per day.

Now imagine the same analogy but replace cars with bits of data. So if you can only drive two bits on a given data-line then 100 Mhz (or 100 million cycles per second) will give more bandwidth (i.e. ability to transfer data over the same line) then 50 Mhz (or 50 Million cycles per second).

CAT3

The Category 3 or CAT3 standard was used heavily in the early 90′s for wiring offices and homes. It’s still used in two-line phone configurations, but has largely fallen out of favor for wired networking thanks to the Category 5e cable’s superior performance. CAT3 can be relied on to handle data speeds of up to 10 Mbps, but no more. Its maximum frequency clocks in at 16 MHz. Like many other cabling options, it relies on copper for data and power transmission. While theoretically limited to 10BASE-T Ethernet, it can actually support 100BASE-T4 speeds by using 4 wires instead of 2 to achieve 100 Mbps throughput.

CAT5

CAT5 Cutout

Around 2000 or so, CAT5 overtook CAT3 as the Ethernet cable of choice for LAN networking. CAT5 uses either the 10BASE-T or 100BASE-T standard for data transmission. Using two cable pairs to signal over copper wire, CAT5 is now largely archaic and isn’t widely used for Ethernet connections. It’s rated for a maximum frequency of 100 MHz and top speeds of 100 Mbps. CAT5 uses 8P8C modular connectors to connect devices together, and can be used effectively at lengths of up to 100 meters. Today, CAT5 cable has been replaced for the most part by CAT5e.

CAT5e

Shielded Twisted Pair

While very similar to CAT5 in appearance, CAT5e introduces some new wrinkles in the equation. For one thing, CAT5e uses four pairs of copper wire rather than the two that CAT5 relies on. In addition, the wire pairs are twisted more tightly and are sheathed in heavy-duty shielding to eliminate crosstalk. Crosstalk cuts down on the speed at which a cable can transmit information. Thanks to its internal upgrades, CAT5e is capable of achieving 1000BASE-T speeds. In other words, it can handle up to 1 Gbps of throughput at a distance of up to 100 meters. As of today, it’s the most common type of cabling found in modern homes and offices for Ethernet purposes.

CAT6

Compare the Twists per Inch for CAT5 and CAT6e Cable

For back-end, high-capacity networking, CAT6 supports Gigabit Ethernet needs. Supporting frequencies of up to 250 MHz and the 10BASE-T, 100BASE-TX, 1000BASE-T, and 10GBASE-T standards, it can handle up to 10 Gbps in terms of throughput. Thanks to better cable insulation, CAT6 reduces potential crosstalk even more so than CAT5e. When used for Gigabit Ethernet and below, the maximum allowable cable length is 100 meters. For 10GBASE-T speeds, the maximum cable length is 55 meters. The one major caveat of CAT6 cables is that installation can be tricky, as compatibility with 8P8C requires the use of special adapter pieces for optimal performance.

CAT6e or Enhanced CAT6

These are an enhancement on the standard CAT6 cables, as they perform much better when installed in an environment with high noise or RF interference. While better than CAT6, they are not as good as the CAT6a or CAT6 Augmented standard cables.

CAT6 Section View

Disassembled CAT6e Cable

CAT6a

CAT5 CAT6 CAT3 Comparison

If you’re wiring up your home or office for Ethernet for the long haul, CAT6a is the perfect choice in terms of future-proofing. When it comes to A/V protocols, CAT6a is supposed to replace HDMI in the coming years. The main difference between CAT6a and CAT6 is that CAT6a can operate at a frequency of up to 750 MHz. In addition, CAT6a is even less susceptible to interference and crosstalk. The improved specification and shielding allows CAT6a to provide more consistently reliable speeds in difficult environments. Thanks to its performance and stability, CAT6a is the preferred cable for 10GBASE-T Ethernet.

Cat 7 and Beyond

The list of Ethernet options doesn’t stop at CAT6a. There’s also a version called CAT7 that’s even more capable than all of the TP cable variants listed above. CAT7, also known as Class F cable, supports transmission frequencies of up to 600 MHz. It supports 10GBASE-T Ethernet over a full 100 meters, and it features improved crosstalk noise reduction. While CAT6e is the current standard when it comes to 10GBASE-T, it will inevitably be replaced with CAT7. Nobody knows what the future holds for Ethernet cables or what will come next in terms of format or performance. No matter what happens, expect faster and faster cables with each passing year as the technology and protocols that support Ethernet continue to improve. Finally, one thing to always keep in mind is that any custom cable can be built to suit the application on any project.

UTP and STP Comparison Chart

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retrieved from url
http://customcable.ca/cat5-vs-cat6/

Magnus Carlsen won World Chess Champion of 2014

The Most common problem for Magicjack plus and how to fix it

A very high probability is that the  AC Power Adapter USB Wall Charger Plug for Magic Jack Plus + get damaged and will lost dial tone, the common sign of this are list below

• lost dial tone
• no light on the device connected
• will heard Eco and surround sound when You pick up the phone
• NO incoming or outgoind call will happend 

Quick solution will be a new replacement of the ac power adapter usb, or temporary connecting the magicjack straight to the computer, using one of its usb port

for more FAQ visit
http://www.magicjack.com/faq/

Dangerous Wastes from X-Ray Operations in Medical and Dental Offices

while we are getting sick and dont even have a clue why,or where we are getting sick, I might have the idea that we are intoxicating our self

the following information is extracted from ecologic page

Dangerous Wastes from X-Ray Operations in Medical and Dental Offices

Analog photographic x-ray machines generate dangerous waste.  Medical facilities, such as doctors', dentists', and veterinarians' offices must handle these wastes in a method that protects nature and people.  Note that digital xray mchines do not produce these wastes.

Manage X-ray Fixer

Used fixer from X-ray processing is a dangerous waste because it contains high concentrations of silver–3,000 to 8,000 parts per million— and anything over 5 ppm is dangerous waste. Because of these high silver levels, it’s illegal to put used fixer down the drain, into a septic system or into the garbage.

• To avoid generating waste fixer at all, consider switching to digital imaging.
• Collect used fixer in a container marked “Used fixer only”. Keep fixer separate from your developer.
• Have a dangerous waste management service pick it up for recycling or dangerous waste disposal.
• Ask your supplier to take it back. Some will take it at no cost and reclaim the silver. Keep disposal receipts.
• Buy a recovery system to reclaim the silver yourself. This option is not highly recommended as it most likely will not be cost-effective and function properly at all times due to maintenance requirements. To be effective and meet silver discharge limits, such systems need to have two canisters placed in a series as well as regular canister replacement, maintenance and testing. Using silver recovery units for the management of used fixer only makes economic and practical sense if the flow of used fixer is at least 2-3 gallons per week. Most dentists generate less than one gallon of fixer a month and find it more cost effective and convenient to collect used fixer for proper recycling or disposal.

Silver Recovery Canisters for Used X-ray Fixer in Dental Offices describes the maintenance required to process x-ray fixer on-site.

Manage X-ray Developer

UNUSED developer contains hydroquinone which is a toxic substance, so unused developer cannot go down the drain. Because hydroquinone is used up in the developing process, USED developer is non-hazardous and is safe to be disposed to the sanitary sewer through the sink drains or toilet.

• Keep developer and used fixer separated. Fixer cannot go down the drain and developer will ruin silver recovery systems. Most x-ray developing machines have separate hoses or trays for these wastes, making it easy to keep them separate.
• If used fixer and developer accidentally get mixed together, the mixture must be disposed of as dangerous waste.
• Flush the drain thoroughly as you dispose of the used developer.
• Do not dispose of developer, whether used or unused, to septic systems, since it may cause them to fail.

Manage X-ray Film

Used x-ray film contains silver. If  the silver concentration is high enough, the used film would be a dangerous waste. Although most film does not contain enough silver to make it a dangerous waste, it is best to collect it for silver recycling.

Manage Lead Foil, Boxes, and Aprons

Lead is a dangerous waste and should not be put in the garbage or in with red bag biomedical waste or sharps. Lead in dental offices is found in lead-foil and aprons, and in some boxes for the storage of x-ray film.

Lead Foil

• Collect lead foil from x-ray packets for recycling.
• In the past, some dentists melted down their collected lead foils to make fishing weights. This is not illegal but is not a recommended BMP. Dental offices should not give lead foil to patients.

Lead-lined Boxes

Dentists who use certain old-fashioned dental boxes to store X-ray film may be unwittingly exposing themselves and patients to dangerous levels of lead, according to an Associated Press story. Dental inspectors in Washington and Wisconsin stumbled onto the bizarre risk after noticing that X-ray film stored in certain boxes had a dusting of white powder.

Laboratory analysis found that the powder was almost 80% lead. Wiping off the powder didn't get rid of the lead, says Food and Drug Administration (FDA) engineer Dave Daly. To keep X-ray film fresh before placing it into patients' mouths, dentists usually store it either a safe distance from X-ray machines or in lead-lined radiation-proof containers specially treated to keep lead from leaching. That's important because lead poisoning can cause serious neurological damage, particularly in children.

However, it turns out that some dentists use old-fashioned boxes--often made of wood, shoebox-sized--with an untreated lead lining to store X-ray film. Washington and Wisconsin alerted the FDA that hundreds of such boxes may be in use, Daly says. One dentist told a state inspector that he used his for nostalgic reasons: his dentist father had passed it down.

The FDA issued a nationwide alert telling dentists to throw away X-ray film stored in such boxes. While no illnesses have been reported, "in may cases there are highly dangerous levels of lead on the films, enough to potentially cause serious adverse health effects in patients and health care professionals," the alert warns.

The FDA cautions that the boxes need to be disposed according to each state's safe-lead regulations. The boxes cannot be converted for other use.

Lead Aprons

When aprons are no longer usable, they must be disposed of as dangerous waste due to their lead content. Keep them out of the landfill and the biomedical waste red bag. Ask your supplier or the original manufacturer if they will take them for recycling or proper disposal. If this is not possible, dispose of worn-out aprons as dangerous waste.

The Hazardous Waste Service Providers' Directory lists vendors who deal with dangerous wastes, such as lead and silver.

Related information

Dentists reminded to keep mercury out of their waste water is an Ecology press release from 2005.Amalgam Separators is a section on the Web site of the American Dental Association.
Fact Sheet - Mercury Use in Dental Amalgam from the Interstate Mercury Education and Reduction Clearinghouse (IMERC).
Mercury-Dental Topic Hub™ from the Pollution Prevention Resource Exchange offers pollution prevention resources to dental offices.

 Retrieved from http://www.ecy.wa.gov/mercury/mercury_dental_xray.html