CCNA INTRO: Introduction to Cisco Networking Technologies by Todd Lammle

By Todd Lammle

Take your first step to CCNA certificationFrom bestselling writer Todd Lammle comes the main up to date booklet on CCNA examination 640-821, the 1st examination in Cisco's well known two-exam Cisco qualified community affiliate (CCNA) certification song. comprehend networking for the small or domestic place of work marketplace, organize for the examination, and obtain the talents you wish with this entire consultant. within you are going to find:Complete assurance of all examination pursuits in a scientific method, so that you could be convinced you are getting the guide you needPractical hands-on workouts to augment serious skillsReal-world eventualities that express you existence past the study room and positioned what you may have realized within the context of tangible task rolesChallenging evaluate questions in each one bankruptcy to organize you for examination dayExam necessities, a key characteristic on the finish of every bankruptcy that identifies severe parts you want to turn into educated in earlier than taking examination 640-821A convenient tear card that maps each professional examination target to the corresponding bankruptcy within the publication, so that you can tune your examination prep aim by way of objectiveLook within for entire insurance of all examination targets.

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Segments are sequenced back into their proper order upon arrival at their destination. A manageable data flow is maintained in order to avoid congestion, overloading, and data loss. The purpose of flow control is to provide a means for the receiver to govern the amount of data sent by the sender. Connection-Oriented Communication In reliable transport operation, a device that wants to transmit sets up a connection-oriented communication with a remote device by creating a session. The transmitting device first establishes a connection-oriented session with its peer system, which is called a call setup or a threeway handshake.

Metric The distance to the remote network. Different routing protocols use different ways of computing this distance. I’m going to cover routing protocols in Chapter 5 and 6, but for now, know that some routing protocols 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.

Fm Page xxvii Wednesday, September 6, 2006 9:46 AM Answers to Assessment Test xxvii Answers to Assessment Test 1. D. Each device has10Mpbs to the server. See Chapter 1 for more information. 2. C. The command line console 0 places you at a prompt where you can then set your console user-mode password. See Chapter 4 for more information. 3. A. 256 – 192 = 64. 64 + 64 = 128. 128 + 64 = 192. The subnet is 128, the broadcast address is 191, and the valid host range is the numbers in between, or 129–190.

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