Now topics covered on the CCNA certification include variable-length subnet mask (VLSM), wireless, security, VPNs, DHCP, and troubleshooting. Over the years, these topics ranged from Token Ring, AppleTalk, IPX/SPX, IP, and RIPv1.
Often considered the gold standard in entry-level networking certifications, the CCNA certification covered a vast array of topics. Prior to the release of the Cisco Certified Entry Networking Technician (CCENT) Certification, the first-entry level Cisco Certification was the Cisco Certified Network Associate (CCNA).
CCNA Flash Cards and Exam Practice Pack (CCENT Exam 640-822 and CCNA Exams 640-816 and 640-802), 3rd Edition
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