Glen Clarke
Glen E. Clarke, CCNA, MCITP, CEH, CHFI, SCNP, CISSO, CompTIA Security+, CompTIA Network+, CompTIA A+ , is an independent trainer and consultant. He has authored many certification books, including CompTIA Network+ Certification Study Guide .
Glen E. Clarke, CCNA, MCITP, CEH, CHFI, SCNP, CISSO, CompTIA Security+, CompTIA Network+, CompTIA A+ , is an independent trainer and consultant. He has authored many certification books, including CompTIA Network+ Certification Study Guide . See less
