building CISCO multilayer switched networks : study guide Jack, Terry. creator San Francisco Sybex c2004 xliv, 561 p. : ill. ; 23 cm. + 1 CD-ROM (4 3/4 in.) Terry Jack. Includes index. Telecommunication Switching systems Examinations Telecommunications engineers Certification 621.3815/37 8176568872 http://www.loc.gov/catdir/enhancements/fy0615/2003109132-b.html http://www.loc.gov/catdir/enhancements/fy0615/2003109132-d.html http://www.loc.gov/catdir/enhancements/fy0615/2003109132-t.html http://www.loc.gov/catdir/enhancements/fy0615/2003109132-b.html http://www.loc.gov/catdir/enhancements/fy0615/2003109132-d.html http://www.loc.gov/catdir/enhancements/fy0615/2003109132-t.html DLC DLC