ISP Information:
This means that the object cannot be written to, which means that you can't save any modifications you make to it. An operating system can have a file set to read-only for security purposes, or certain media, like a CD-ROM or DVD-ROM, is read-only by design and cannot be altered.
ISP Glossary:
Read Only - "Woodchuck" wrote in messagenews:3fbfff8e$0$35840$4d5ecec7@reader.city-net.com... I'm wondering what the difference is? When I download a file is usually is around 3.xKB/s but when comparing other advertiser such as satellite Direcway and Starband they report common speeds of around 600kb/s download and 30-40kb/s upload. As a comparison what would 3.xKB/s relate to thekb/s numbers. The reason I ask it looks like I will be dead and long gonebefore anything faster than barb wire fence carries my phone service. There'scable 2 miles one way, DSL 3 miles the other, and cable 3/4 down the road butit's in another imaginary phone company. Where I live I'm the last phone in the old GTE phone company and it's the first house in Verzion's area. But GTEis now owned by Verzion and there's a boundary between them. Bunch of bull.. ThanksCommunication systems are typically specified in bits-per-second, denoted bylower case "b." Computer's typically use byte as the basic unit of measure,denoted by upper case "B." One byte is 8 bits.The kilo (1,000) and Mega (1,000,000) prefixes are commonly usedmultipliers. Unfortunately computer nomenclature often uses binaryarithmetic so kilo=1024 and Mega = 1,048,575. There are binary SI prefixesbut no one uses them so there is often ambiguity about precise value of theprefix.NIST has a nice table of SI prefixes:http://physics.nist.gov/cuu/Units/prefixes.htmlOne more wrinkle to keep in mind is that communication systems specify thespeed of the connection. A computer transfer report reports the rate payloaddata was transferred from one computer to another. This will always be lessthe simply dividing speed in bits per second by 8 to arrive at bytes persecond because all communication protocols add overhead. A typical figure ofmerit is to assume TCP/IP adds about 10% overhead.Bottom line an easy back of the envelope calculation is to divide channelspeed by 10 to estimate computer file transfer speed. If your modem isoperating at 600 kbps typical best case download will be about 60 kBps. Mostconsumer access is asymmetric, download speed is significantly faster thenupload./Tom
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