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Chapter 2 Overview of Networking Components

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Presentation on theme: "Chapter 2 Overview of Networking Components"— Presentation transcript:

1 Chapter 2 Overview of Networking Components

2 Chapter 2 Overview Comparing unicast, broadcast, and multicast traffic
Understanding network hardware Exploring protocols and services Understanding basic topologies 2

3 Comparing Unicast, Broadcast, and Multicast Traffic
Data transmitted over a network IP addresses used as addresses For example, Wired networks IEEE (Ethernet) Wireless networks IEEE 3

4 Understanding Unicast Traffic
Traffic sent from one system to one other system One-to-one 4

5 Data Names Packets Frames Datagrams Protocol data units (PDUs) 5

6 Understanding Broadcast Traffic
Traffic sent from one system to all other systems on a subnet One-to-all 6

7 Routers and Broadcasts
Routers don’t pass broadcast Routers separate subnets Broadcasts aren’t passed from subnet to another Some exceptions For example DHCP (using a special type of broadcast) 7

8 Understanding Multicast Traffic
Traffic sent from one system to many other systems One-to-many 8

9 Understanding Network Hardware
Collision domain Broadcast domain Switches Create separate collision domains Routers Create separate broadcast domains 9

10 Understanding Hubs Four-port hub 10

11 Understanding Switches
Four-port switch 11

12 Understanding Bridges
Four-port bridge creating four collision separate domains 12

13 Understanding Routers
Two subnets connected by a router 13

14 Understanding Routers
Network with multiple subnets separated by routers 14

15 Routers and Default Gateways
Near side of the router 15

16 Understanding Firewalls
Network-based and host-based firewalls 16

17 Understanding Media Straight-through cable 17

18 Understanding Media Crossover cable Use for like devices 18

19 Exploring Protocols and Services
Provide the rules for communication Must be configured properly TCP/IP protocol suite Multiple protocols Used on the Internet Used in Microsoft networks 19

20 Exploring Protocols and Services
Services applet 20

21 Exploring Protocols and Services
Service startup types Automatic Automatic (Delayed Start) Manual Disabled 21

22 Understanding Basic Topologies
Internet Extranet Intranet Perimeter Network 22

23 Understanding Basic Topologies
Internet Public network 23

24 Understanding Basic Topologies
Intranet Organization's internal network 24

25 Understanding Basic Topologies
Perimeter Network (DMZ) Between Internet and intranet 25

26 Understanding Basic Topologies
Extranet For trusted entities 26

27 Chapter 2 Summary Comparing unicast, broadcast, and multicast traffic
Understanding network hardware Exploring protocols and services Understanding basic topologies 27


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