ccna exam study guide

CCNA Study Notes 2 --- EthernetEthernet ◆ type: 1, EthernetII; 2, 100 standard Ethernet (10 Mbps) Fast Ethernet (1000 Mbps 10 Gbps 40 Gbps, using CSMA/CD access control, all are in line with 802.3 ◆ L2 network Classification 1, point-to-point: WAN network serial port 2, multi-point} ---- Ethernet broadcast} ---- Frame Relay does not support broadcast ◆ collision over Ethernet, when the two nodes transmit da

CCNA Study Notes 4 --- vro Startup Process and register value◆ Role of the vro register value (after understanding, used to adjust the optimization of the vro switch work) power-on self-check (post) load and run boot guide microcode to search for IOS image) file loading IOS image file search configuration file loading configuration file normal operation hex 2102

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statements and focus on addition, deletion, modification, and query. Ability to test: http://blog.csdn.net/xc5683/article/details/8678255 2. Programming Language Java is recommended here. After all, Java is more popular today than runtime. It is also very easy to learn other languages. Objective: To understand the logic and object-oriented thinking of programming. Master a language. There are a lot of videos in this area. You can find them for yourself. 3. UML UML must be able to understand at

statements and focus on addition, deletion, modification, and query. Ability to test: http://blog.csdn.net/xc5683/article/details/8678255 2. Programming Language Java is recommended here. After all, Java is more popular today than runtime. It is also very easy to learn other languages. Objective: To understand the logic and object-oriented thinking of programming. Master a language. There are a lot of videos in this area. You can find them for yourself. 3. UML UML must be able to understand at