The Cisco Certified Entry Networking Technician (CCENT) certification is the first stage of Cisco's certification system. The CCENT certification is an interim step to Associate level or directly with CCNA and CCDA certifications. While the CCENT covers basic networking knowledge; it does not get involved with the more intricate technical aspects of the Cisco routing and switching and network design. The certification does validate the skills essential for entry-level network support positions. CCENT qualified individuals have the knowledge and skill to install, manage, maintain and troubleshoot a small enterprise branch network, including network security. The CCENT curriculum covers networking fundamentals, WAN technologies, basic security and wireless concepts, routing and switching fundamentals, and configuring simple networks. The applicable training is Cisco ICND1 and the exam is (640-822 ICND1), and it costs $125 retail. The certification is valid for 3 years, and professionals may retake the exam to re-certify.
CCNA - Cisco Certified Network Associate. CCNA is Cisco's entry level networking certification with the training and certification to install and manage switches and routers.
The first class in IPv4 IP addressing. Default subnet mask is 255.0.0.0 and has a first octet IP address range from 0 to 127. The first bit in a class A IP address will always be 0.
The second class in IPv4 IP addressing. Default subnet mask is 255.255.0.0 and has a first octet IP address range from 128 to 191. The first bit in a class B IP address will always be 10.
The Third class in IPv4 IP addressing. Default subnet mask is 255.255.255.0 and has a first octet IP address range from 192 to 223. The first bit in a class C IP address will always be 110.
