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How many characters are there in a encyclopedia how long would it take to transmit the text over a t-1 line at 1.544 mbps and fiber optic line at 2.488 gbps?
Wiki User
∙ 10y ago
I don't know how many characters there are in a set of encyclopedias, so let's
make one up:
Let's say the set of books has 10,000 pages (average of about 385 pages for each
letter of the alphabet), and each page has an average of 2,000 characters printed
on it.
We won't worry about pictures, weird fonts, or symbols right now. Just 10,000 pages,
with 2,000 characters on each page. That's 20 million characters all together.
-- It takes 8 bits to transmit one ASCII character.
-- So we'll need to transmit 160 million bits.
-- At 1.544 Mbps, 160 million bits takes 103.63 seconds = 1minute 43.6seconds.
-- At 2.488 Gbps, 160 million bits takes 0.0643 of one second.
Wiki User
∙ 10y ago
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Difference between simplex and dual simplex?
Simplex is usually used to describe a single strand of Fiber Optic cable. This is sometimes used when a signal only needs to go in one direction, like a simple video feed from a security camera. Duplex (sometimes called "zipcord") is two strands of Fiber Optic cable joined by a thin connection between the two jackets. This is much more commonly used than simplex as with two fibers you can get synchronous communication between devices. Duplex cables are often labeled with A and B to determine which is the transmit and which is the receive.
What is the speed of light in a glass fiber optic cable with a refractive index of 1.52?
In any medium whose refractive index is 1.52, the speed of light is c/1.52 = 0.658 c =197,231,880 meters per second (rounded)
What does PRISM stand for in regard to the NSA?
PRISM could be some nifty acronym for something but i believe it is a simple one word explanation and inside joke for the general method the NSA is using to acquire data. According to the website thefreedictionary.com the definition of a prism as it relates to optics is: a transparent solid body, often having triangular bases, used for dispersing light into a spectrum or for reflecting rays of light. At some point outside of the actual physical location of a given company's data center they are intercepting the fiber optic backbone/cable that is carrying data to and from the internet to the data center. A fiber optic cable splitter is placed on the cable and all of the packets that pass through the device are sent to both their original destination and to the NSA's collection facility or data center. This could account for the vehement denials by the named companies that they are providing unfettered access to their servers. The NSA would not need internal server access if they were getting the raw feed. The infamous Room 641 in the AT&T facility in the SBC Communications Building in San Francisco, California, USA was used for a similar purpose: "...It is fed by fiber optic lines from beam splitters installed in fiber optic trunks carrying internet backbone traffic," as described on wikipedia.org in the article on Room 641.
How many optic nerves are there in eyes?
There is one optic nerve in the eye. It is also known as cranial nerve II.
Can you use multimode SFP in place of single mode SFP?
Singlemode fiber has a lower power loss characteristic than multimode fiber, which means light can travel longer distances through it than it can through multimode fiber. Not surprising, the optics required to drive singlemode fiber are more expensive. When to use each: Both singlemode and modern multimode fiber can handle 10G speeds. The most important thing to consider is the distance requirement. Within a data center, it's typical to use multimode which can get you 300-400 meters. If you have very long runs or are connecting over longer distance, single mode can get you 10km, 40km, 80km, and even farther - you just need to use the appropriate optic for the distance required, and again, the prices go up accordingly. Compatibility issues: They are not compatible. You cannot mix multimode and singlemode fiber between two endpoints. The optics are not compatible either.
When was the first time fiber optic cable was used to transmit information?
It was 1975.
What is fiber optic broadband?
"Broadband" is just a relative description of how fast you can transmit data. (It implies a high rate) "Fiber optic" is a description of the physical method used to transmit the data: it's not by copper wire or by radio wave.
What are strands of glass tha transmit digital data by pulses?
Fiber optic cables transmit digital signals as pulses of light.
What is the difference between a fiber optic cable and a regular cable?
Fiber optic cables utilize glass or plastic fibers instead of metal wires to transmit data. A fiber optic cable allows for a higher rate of the transmission of data, which is good for things like the internet.
Which of the following cable types can transmit data the LONGEST distance without the use of a repeater?
fiber optic
Is fiber optic communication better than electric communication?
yes. fiber optic communications literally move at the speed of light, while electric communication is limited to the wire used to transmit the data
Cables transmit signals as pulses of light over glass strands inside protected tubing?
Fiber-optic
Which transmission media carries the highest bandwidth?
By using Fiber Optics, we can achieve 100Gbps.
What are some uses for fiber cable?
Fiber cable, or fiber optic cable, is primarily used to transmit bandwidth. Cable service providers and internet service providers use these cables to transmit their services to devices, such as modems and cable box units in consumers' homes.
Can alternating current be transmitted through fiber optic cable?
No. Nor can direct current, for that matter. Fiber optics is designed to transmit light signals, not electrical currents.
What do Fiber optic cables transmit data through?
Fiber optic cables transfer data signals in the form of light and it is faster than traditional electric cables. It is very helpful in good and speedy communication, network and broadcasting services. We provide high quality tactical fiber optic reel, fiber cable assemblies, OEM cable assemblies, custom cable assemblies and power cords to different companies. Visit americancableassemblies. com now. americancableassemblies. com/fiber-optic-cables/tactical-fiber-reels/
What are optic fibers used for?
If you mean Fiber Optics, then those are used to transmit data usually on a DSL line, to the ISP and back to you.
