By Todd Lammle
Here's the e-book you want to arrange for Cisco's CCNA examination, 640-801. This research advisor used to be built to satisfy the exacting specifications of present day Cisco certification applicants. as well as the attractive and obtainable tutorial process that has earned writer Todd Lammle the "Best examine advisor writer" award in CertCities Readers' selection Awards for 2 consecutive years, this up-to-date 5th variation presents:
- In-depth assurance of each CCNA examination target
- Expanded IP addressing and subnetting assurance
- More unique info on EIGRP and OSPF
- Leading-edge examination instruction software program
Authoritative assurance of all examination ambitions, together with:
- Network making plans & designing
- Implementation & operation
- LAN and WAN troubleshooting
- Communications know-how
Read Online or Download CCNA: Cisco Certified Network Associate Study Guide (640-801) PDF
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Additional resources for CCNA: Cisco Certified Network Associate Study Guide (640-801)
Sample text
This will really help you understand the feel of the actual CCNA exam simulation questions, so don’t skip this valuable study tool. 8. Test yourself using all the flashcards on the CD. These are brand new and updated flashcard programs to help you prepare for the CCNA exam. These are a great study tool! xxx Introduction The electronic flashcards can be used on your Windows computer, Pocket PC, or on your Palm device. 9. Make sure you read the Exam Essentials section at the end of the chapters. Appendix A lists all the commands used in the book, including an explanation for each command.
The OSI has seven different layers, divided into two groups. The top three layers define how the applications within the end stations will communicate with each other and with users. The bottom four layers define how data is transmitted end-to-end. 3 shows the four lower layers and their functions. 2, understand that the user interfaces with the computer at the Application layer, and also that the upper layers are responsible for applications communicating between hosts. Remember that none of the upper layers knows anything about networking or network addresses.
When it receives the acknowledgment, the sender then transmits segments 4, 5, and 6. If segment 5 doesn’t make it to the destination, the receiving node acknowledges that event with a request for the segment to be resent. The sending machine will then resend the lost segment and wait for an acknowledgment, which it must receive in order to move on to the transmission of segment 7. The Network Layer The Network layer (also called layer 3) manages device addressing, tracks the location of devices on the network, and determines the best way to move data, which means that the Network layer must transport traffic between devices that aren’t locally attached.