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by Dinesh Thakur Category: Computer Network

The physical layer represents the first level of the hierarchy of the reference model. This level is responsible for transporting the bits on physical media varied. To access a support, use an access interface.

 
by Dinesh Thakur Category: Computer Network

Shared Ethernet Networks implementing technical standard access to physical media by the IEEE 802.3 working group under the name MAC access (Medium Access Control). MAC uses a general technique called random access.

 
by Dinesh Thakur Category: Computer Network

The idea at the basis of the wavelength routing network consists of maximum reuse the same wavelengths. The figure illustrates a node of a routing network wherein wavelengths of the same wavelength are used repeatedly.

 
by Dinesh Thakur Category: Computer Network

The Optical Switches are used to connect optical links between them. At incoming optical fibers correspond outgoing optical fibers. If the switch uses an electrical part, the switch is said optoelectronics and not only optical. These switches are based on the interconnection of switching elements, that is to say, switches which have two input gates and two output ports as shown in Figure. Connected in series, these elementary switches allow making great switches.  The design of these devices, however, poses many problems.

 
by Dinesh Thakur Category: Computer Network

VDSL modems (Very high bit rate DSL) achieve speeds much higher than ADSL modems, but a few blocks away. Their capacity is several tens of megabits per second. VDSL modems can make the output of a PON (Passive Optical Network) to extend their connection to the user. PON being in ATM technology, VDSL modems must in this case accept the ATM frame.

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to contact us.



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