A(n) ________ provides wireless devices with a sending and receiving connection point to the network

In ________ implementations, a portion of the new system is put into place and perfected before additional pieces of the system are moved into use

Fill in the blank(s) with correct word

Every time a new webpage is created, it must be run through W3C's _________ to check the document for errors. ?

Fill in the blank(s) with the appropriate word(s).