Download CompTIA Network+ Training Kit (Exam N10-005) by Craig Zacker PDF

By Craig Zacker

Ace your guidance for the abilities measured by way of CompTIA community+ examination N10-005. paintings at your individual speed via a chain of classes and studies that absolutely disguise each one examination target. Then, make stronger what you’ve discovered through making use of your wisdom to real-world case eventualities and perform workouts. This advisor is designed to assist utilize your learn time.

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Some of the most important protocol functions are described in the following list. 6 Chapter 1 Networking Basics ■■ ■■ ■■ ■■ ■■ ■■ ■■ ■■ Addressing A system for assigning a unique designation to each computer on a network and using those designations to transmit data to specific computers Acknowledgment The transmission of a return message by the receiving system to verify the receipt of data Segmentation The division of a large block of data into segments sufficiently small for transmission over the network Flow control The generation of messages by a receiving system that instruct the sending system to speed up or slow down its rate of transmission Error detection The inclusion of special codes in a data transmission that the receiving system uses to verify that the data was not damaged in transit Error correction The retransmission of data that has been corrupted or lost on the way to its destination Encryption The encoding of data with a cryptographic key to protect it during transmission over the network Compression The removal of redundant information from data blocks to minimize the amount of data transmitted over the network Most of the networking protocols in use today are based on open standards so that different manufacturers can produce implementations that are fully compatible.

A large part of the Network+ exam is devoted to testing your knowledge and understanding of these various protocols. Networking protocols can provide many different functions to the data structures on which they operate. The protocols protect the data as the computers transmit it over the network and see to it that the data arrives at its intended destination. Some of the most important protocol functions are described in the following list. 6 Chapter 1 Networking Basics ■■ ■■ ■■ ■■ ■■ ■■ ■■ ■■ Addressing A system for assigning a unique designation to each computer on a network and using those designations to transmit data to specific computers Acknowledgment The transmission of a return message by the receiving system to verify the receipt of data Segmentation The division of a large block of data into segments sufficiently small for transmission over the network Flow control The generation of messages by a receiving system that instruct the sending system to speed up or slow down its rate of transmission Error detection The inclusion of special codes in a data transmission that the receiving system uses to verify that the data was not damaged in transit Error correction The retransmission of data that has been corrupted or lost on the way to its destination Encryption The encoding of data with a cryptographic key to protect it during transmission over the network Compression The removal of redundant information from data blocks to minimize the amount of data transmitted over the network Most of the networking protocols in use today are based on open standards so that different manufacturers can produce implementations that are fully compatible.

The actual signaling scheme that a network uses is not controllable by the network administrator; it is specified by the data-link layer protocol in the case of a LAN, or by the WAN technology. Therefore, although it might be interesting for a network administrator to know that Ethernet networks use a signaling scheme called Differential Manchester and how it works, it is not a subject that comes up in daily practice. more info Learning More About Physical Layer Protocols For more detailed information about the physical layer specifications of specific types of networks, see the chapters listed in Table 1-1.

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