By Wendell Odom
This quantity is a part of the examination Certification advisor sequence from Cisco PressR. Books during this sequence offer formally built examination instruction fabrics that supply overview, evaluation, and perform to assist Cisco profession Certification applicants determine weaknesses, focus their learn efforts, and increase their self assurance as examination day nears.
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Additional resources for CCNA INTRO Official Exam Certification Guide
Layer 5 f. Layer 6 g. Layer 7 Which OSI layer defines the standards for cabling and connectors? a. Layer 1 b. Layer 2 c. Layer 3 d. Layer 4 e. Layer 5 f. Layer 6 g. Layer 7 Which OSI layer defines the standards for data formats and encryption? a. Layer 1 b. Layer 2 c. Layer 3 d. Layer 4 e. Layer 5 f. Layer 6 g. Layer 7 Which of the following terms are not valid terms for the names of the seven OSI layers? a. Application b. Data link c. Transmission d. Presentation e. Internet f.
Similarly, when Pebbles sends the file to address 0003, only PC3 processes the received frames and creates a file. She is now ready to deploy the first computer network. Pebbles now needs to build all the hardware required for the network. She first creates 200 network cards, each with a unique address. She installs the FTP program on all 200 PCs and installs the cards in each PC. Then she goes back to the lab and starts planning how many cables she will need and how long each cable should be. fm Page 12 Thursday, July 26, 2007 3:10 PM 12 Chapter 1: Introduction to Computer Networking Concepts realizes that she will need to run some cables a long way.
Pebbles first decides to do some research and development. If she can get two PCs to transfer files in a lab, then she ought to be able to get all the PCs to transfer files, right? She writes a program called Fred’s Transfer Program, or FTP, in honor of her father. fm Page 9 Thursday, July 26, 2007 3:10 PM Perspectives on Networking The program uses a new networking card that Pebbles built in the lab. This networking card uses a cable with two wires in it—one wire to send bits and one wire to receive bits.