Презентация на тему: Networks and telecommunications

Networks and telecommunications
Types of Networks
Types of Networks
Types of Networks
Types of Networks
Types of Networks
TCP/IP
Network Addresses
Domain Name System
Domain Name System
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Первый слайд презентации: Networks and telecommunications

C omputer network A collection of computing devices that are connected in various ways in order to communicate and share resources

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Слайд 2: Types of Networks

15- 2 Types of Networks 1.Local-area network (LAN) A network that connects a relatively small number of machines in a relatively close geographical area

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Слайд 3: Types of Networks

15- 3 Types of Networks Various configurations, called topologies, have been used to administer LANs Ring topology A configuration that connects all nodes in a closed loop on which messages travel in one direction Star topology A configuration that centers around one node to which all others are connected and through which all messages are sent Bus topology All nodes are connected to a single communication line that carries messages in both directions

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Слайд 4: Types of Networks

A bus technology called Ethernet has become the industry standard for local-area networks Figure 15.2 Various network topologies 15-10

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Слайд 5: Types of Networks

15- 5 Types of Networks 1. Wide-area network (WAN) A network that connects two or more local-area networks over a potentially large geographic distance.

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Слайд 6: Types of Networks

15- 6 Types of Networks 3. M etropolitan-area network (MAN) The communication infrastructures that have been developed in and around large cities

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Слайд 7: TCP/IP

15- 7 TCP/IP IP stands for Internet Protocol IP software deals with the routing of packets through the maze of interconnected networks to their final destination. Network software translates a hostname into its corresponding IP address For example 205.39.145.18

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Слайд 8: Network Addresses

15- 8 Network Addresses An IP address can be split into network address, which specifies a specific network host number, which specifies a particular machine in that network Figure 15.9 An IP address is stored in four bytes

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Слайд 9: Domain Name System

15- 9 Domain Name System The very last section of the domain is called its top-level domain (TLD) name Figure 15.10 Top-level domains, including some relatively new ones

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Последний слайд презентации: Networks and telecommunications: Domain Name System

15- 10 Domain Name System Organizations based in countries other than the United States use a top-level domain that corresponds to their two-letter country codes Figure 15.11 Some of the top-level domain names based on country codes

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