Todd Lammle's CCENT: Cisco Certified Entry Networking Technician: ICND1 PDF

By Todd Lammle

Begin your coaching for Cisco's new CCENT entry-level networking certification, your access element into Cisco's renowned CCNA certification music. This finished learn consultant from best Cisco authority Todd Lammle completely prepares you for the Interconnecting Cisco Networking units, half 1 examination (640-822) and the beginning of a profession, with pages of examination necessities, real-world eventualities, and hands-on workouts. subject matters comprise the operation of knowledge networks, how you can enforce either switched and routed networks, and lots more and plenty more.For teachers: educating supplementations can be found for this identify.

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Read or Download CCENT: Cisco Certified Entry Networking Technician: ICND1 (Exam 640-822) (Exam 640-822 With CD) PDF

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Additional info for CCENT: Cisco Certified Entry Networking Technician: ICND1 (Exam 640-822) (Exam 640-822 With CD)

Sample text

How many collision domains do you see here? I’m counting 10—remember that connections between the switches are considered a collision domain! So now that you’ve gotten an introduction to internetworking and the various devices that live in an internetwork, it’s time to head into internetworking models. Should I Just Replace All My Hubs with Switches? You’re a network administrator at a large company in San Jose. The boss comes to you and says that he got your requisition to buy a switch and he’s not sure about approving the expense; do you really need it?

And of note, if these two are on the same LAN, Bob can just broadcast to Sally asking her for the information (no DNS needed)—welcome to Microsoft Windows (Vista included)! 255 is a broadcast address). 255. 3? 3 Okay, sweet—Bob now has both Sally’s IP address and her MAC address! Both are listed as the source address at this point because this information was sent from Sally back to Bob. So, finally, Bob has all the goods he needs to communicate with Sally. ” By the way, I want you to understand that Sally still had to go through the same resolution processes to communicate back to Bob—sounds crazy, huh?

Different routing protocols use different ways of computing this distance. fm Page 23 Wednesday, January 23, 2008 1:41 PM The OSI Reference Model 23 know that some routing protocols (namely RIP) use something called a hop count (the number of routers a packet passes through en route to a remote network), while others use bandwidth, delay of the line, or even tick count (1 ⁄ 18 of a second). And as I mentioned earlier, routers break up broadcast domains, which means that by default, broadcasts aren’t forwarded through a router.

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