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Igoryamba
3 years ago
10

Explain how touch-tone dialing sends digits to the switch and write the name given to define touch-tone dialing.

Computers and Technology
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer: Please see below as the answer is self-explanatory

Explanation:

Digital phones, normally uses a keyboard, with the digits 0-9, and special characters like # and *.

When the caller presses any keyboard, an electronic circuit within the phone generates two pure sinusoids, of frequencies within the vocal bandwidth (between 300 Hz and 3 khz, roughly), which identifies uniquely (as decoded by the receiving switch) which was the key pressed.

In this way, the switch reconstructs the phone number called, separating country code, area code and the local number as it receives the tones.

This system is called DTMF (dual tone multi frequency).

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Name and describe the various features of the PC support pages of About.com.
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Answer: Awnser below.

Explanation:

Basically, what you're going to need for a computer from my basic knowledge is a motherboard, of course, this is so you can actually use your computer. You'll need a PSU, or so called, a power supply. This will give power to your motherboard and the other components with it. You will need a CPU, this is basically the brains of the computer. This will run your operating system, and main componets. A GPU, this will give you a display for your monitor. And of course, ram. Ram will be giving you display for your monitor, and for running tasks.

For more components, you would need a hard drive, or an SSD, which will store your files and operating system. And of course, a keyboard, mouse, and monitor.

7 0
3 years ago
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A memory page containing a heavily used variable that was initialized very early and is in constant use is removed, then the pag
kompoz [17]

Answer:

C. FIFO

Explanation:

The first-in, first-out (FIFO) page replacement algorithm is a low-overhead algorithm that requires work on the part of the operating system. On a page fault, the frame that has been in memory the longest is replaced.

Using FIFO algorithm implies that

a page which was brought into memory first will be removed first since variable was initialized very early. it is in the set of first in pages that will be removed.

It is the simplest page replacement algorithm. The operating system keeps track of all pages in the memory in a queue, the oldest page is in the front of the queue. When a page needs to be replaced page in the front of the queue is selected for removal that is first in first out.

A memory page containing a heavily used variable that was initialized very early and is in constant use is removed, then the page replacement algorithm used is called First In First Out.

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2 years ago
_____ is responsible for packet forwarding. a. Transmission Control Protocol b. User Datagram Protocol c. Extensible Authenticat
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Answer:

d. Internet Protocol

Explanation:

Internet Protocols suite  are used to transport packets from the host network across other networks. This task is usually performed by optimizing the size of each available packet, which are then forwarded through the internet protocol (IP) address.

Therefore, Internet Protocol is responsible for packet forwarding.

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