is that hypodermis is an epidermal layer of cells that secretes an overlying chitinous cuticle, as in arthropods while dermis is (anatomy) the tissue of the skin underlying the epidermis.s that hypodermis is an epidermal layer of cells that secretes an overlying chitinous cuticle, as in arthropods while dermis is (anatomy) the tissue of the skin underlying the epidermis.
DSL is billed on a monthly basis, usually for a fixed price, and for the majority of providers it includes unlimited usage. In other words, whether you use it for email once a day, or you are a net addict and use it constantly, your bill is always the same. Once you have a DSL line, you can use all the resources of the internet in the same way as you did from a regular modem and a dial-up account.
DSL redirects here. For other uses, see DSL (disambiguation) . Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines.his is possible because DSL uses higher frequency bands for data. On the customer premises, a DSL filter on each non-DSL outlet blocks any high-frequency interference to enable simultaneous use of the voice and DSL services.