Ccna Essay

3177 WordsJun 23, 201513 Pages
What this contains: 1. Topics You Must Have Mastery of 2. A Few Tips on Subnetting 3. 35 Random Factoids Addendum to ICND1/2 4. Pages to Review Prior to Taking the Exam 5. Important Configs to Study Topics You Must Know for the CCNA Exams: • Packet delivery model (ARP, MAC address table, Routing, Switching) • DHCP • IP Subnetting • Cabling • VLAN Troubleshooting • CDP Usage • Route Summarization • Static Routing • OSPF • PAT • IPv6 • Spanning Tree Protocol • Wireless (802.11a,b,g, WPA1,WPA2) • Access lists • Port Security Extra notes you should brush up on- Things you'd miss in the course, or things not in the course! • Security - IDS and IPS are security appliances. • Security - DOS (denial-of-service) attacks - Overwhelm or bring down a service or device • OSI - Types of flow control: windowing, congestion avoidance, buffering • OSI - MTU - maximum packet size • ICMP - If you send to wrong router, you can get destination Unreachables • Ethernet - Interface Up/down - check the far side to see if there is a cable attached and the device is on • Ethernet - VTP password validates VTP advertisements • Wireless - WPA - Dynamic keys that can change on the fly • Wireless - 10% overlap of channels to provide mobility support • Wireless - Change the default SSID value on APs and configure a new administrator password to prevent unauthorized access to an AP. • Wireless - IBSS - Ad Hoc wireless w/o an access point • Wireless - SSID not beaconed - Just configure it on the client, must match • IOS - Boot sequence - Flash, TFTP server, ROM • IOS - Password required but none set - Set VTY password on line vty 0 4 • IOS -

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