TY - BOOK AU - Shay,William A. TI - Understanding data communications and networks SN - 0534383173 AV - TK5105 .S49 2004 U1 - 004.6 22 PY - 2004/// CY - Australia, Belmont, Calif. PB - Thomson Brooks/Cole KW - Data transmission systems KW - Computer networks N1 - Includes bibliographical references and index; Introduction to communications , standards and protocols -- Transmission media and codes -- Analog and and Digital signals -- Making connections -- Data compression -- Data integrity -- Data security -- Flow control -- Local area networks -- Connecting networks -- Internet protocols and applications -- Internet programming -- Circuit technologies UR - http://www.loc.gov/catdir/enhancements/fy1302/2003109625-b.html UR - http://www.loc.gov/catdir/enhancements/fy1302/2003109625-d.html UR - http://www.loc.gov/catdir/enhancements/fy1302/2003109625-t.html ER -