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Welcome to Network+ Course

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Welcome to Network+ Course

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  1. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Welcome to Network+ Course

  2. Why Certification? نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس • IT Development • Universities ability • Employers and employees needs • Cisco CCIE Certificate

  3. Certification Companies نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس • Cisco( CCNA, CCNP, CCIE, … ) • Comptia (Network+, I-Net+, Server+, Linux+, Security+, e-Biz+, A+ ) • Microsoft(MCP, MCSE, MCSD, ….) • RedhatRed Hat Certified Technician (RHCT). • SUNSolaris

  4. Network+ نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس CompTIA Network+ Certification The CompTIA Network+ certification is the worldwide standard for professionals with at least nine months of experience in network support or administration. A Network+ certification demonstrates your technical abilities in networking administration and support, and validates your knowledge of media and topologies, protocols and standards, network implementation, and network support. If you have nine months of network administration and support experience, Network+ is ideal for you. Network+ and Your Career Many corporations recommend or require the Network+ certification for their IT employees.

  5. Main Goals for this course • A requisite for CCNA Course • Passing the Network+ Exam and get the certification • Representing a solid background of networking knowledge regarding Network+ standard course

  6. Domain % of Examination • 1.0 Network Technologies 20% • 2.0 Network Media and Topologies 20% • 3.0 Network Devices 17% • 4.0 Network Management 20% • 5.0 Network Tools 12% • 6.0 Network Security 11% • Total 100%

  7. Basic Networking Fundamentals

  8. What is a Computer Network ? • Two or more computers connected together, having the ability to use shared resources on each other. • Two computers that are connected with a Network Cable through their network cards are an example of a simple network.

  9. Networking Concepts and Components • Something to share ( Data ) • Physical Pathway ( Transmission medium ) • Interfaces for communication ( Network Interface ) • Rules of Communication ( Protocols )

  10. What are some of the different types of the network? • In a clinent/server network each host will act Specifically as a Server (the provider of resources) or a Client (the receiver of resources)

  11. What are some of the different types of the network? • Peer to peer • In a peer to peer network every host will act as a client AND a server

  12. What are some of the different types of the network? • LAN –Local Area Network • Typically refers to a network contained whitin a building

  13. MAN – Metropolitan Area Network A network spread between non-contiguous Buildings within a single metropolitan area.

  14. WAN –Wide Area Network • A network spread over a wide area ,typically covering multiple cities and countries.

  15. Network Types ( 2 ) • Network Topologies : • 1 – Bus • 2 – Star • 3 – Ring • 4 – Mesh (Full mesh Vs. Partial mesh) • 5 -Tree • 6 - Hybrid

  16. Bus Topology

  17. Star Topology

  18. Ring Topology

  19. Mesh Topology

  20. Tree Topology

  21. Hybrid Topology

  22. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Types ( 3 ) • Models of Network Computing : • 1 – Centralized Computing • 2 – Distributed Computing • 3 – Collaborative Computing

  23. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Centralized Computing • All processing takes place in the central mainframe computer • Terminals are connected to the central computer and function only as input/output devices • Terminals connect only to the mainframe, never to each other.

  24. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Distributed Computing • Multiple computers are capable of operating independently. • Tasks are completed locally on various computers • Networks enable the computers to exchange data and services but do not provide processing assistance

  25. Collaborative Computing نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس • Multiple computers cooperating to perform a task • A network that enables the computers to exchange data and services • Software designed to take advantage of the collaborative environment

  26. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Types ( 5 ) • Transmission Methods : • Circuit switching • Dedicated path is created between two nodes • Packet switching • Message is broken into small packets

  27. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Circuit Switching • A circuit is established, an end-to-end connection must exist to transfer data • The actual data transfer • After data transmitted, connection is terminated

  28. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Packet Switching • Message is broken into small packets. • Allows interactive exchanges because of small packets. • Uses messages that are all the same length (called packets) • Packets may be 128, 256, 512, or 1024 bits long

  29. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (1) • Client • Server • Host • Workstation • Peer • PC

  30. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (2) • Backbone • A part of a network that all segments and servers connect. (Gigabit Ethernet, FDDI, Thicknet) • Segment • Any short section of the network that is connected to the backbone

  31. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (3) • Half-duplex • A bi-directional communication but only one direction at a time, such as walkie-talkie • Full-duplex • Allows communications in both directions simultaneously.

  32. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (4) • Broadband Vs. Baseband • With baseband the whole bandwidth of the cable is used for each signal (channel), but in broadband the bandwidth is divided into descrete bands

  33. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (5) • Broadband • -Allow Multiple communication methods to share a common media. • Baseband • -Use single communication method.

  34. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (6) • Bit • -bps (bits per second) • -Kbps (Kilo bits per second) • -Mbps (Mega bits per second) • -Gbps (Giga bits per second) • Byte • Octet

  35. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Network Terminology (7) • Speed • Bandwidth • Through put

  36. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس PHYSICAL MEDIA

  37. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Physical Media

  38. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Physical Media • Copper • Coaxial Cable - Thick or Thin • Unshielded Twisted Pair - CAT 3,4,5,5e&6 • Optical Fiber • Multimode • Singlemode • Wireless • Short Range • Medium Range (Line of Sight) • Satellite

  39. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Copper Media: Coaxial Cable Coaxial cable is a copper-cored cable surrounded by a heavy shielding and is used to connect computers in a network. Outer conductor shields the inner conductor from picking up stray signal from the air. Repeater is used to regenerate the weakened signals.

  40. BNC connectors

  41. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Copper Media: Twisted Pair Twisted-pair is a type of cabling that is used for telephone communications and most modern Ethernet networks. A pair of wires forms a circuit that can transmit data. The pairs are twisted to provide protection against crosstalk, the noise generated by adjacent pairs. There are two basic types, shielded twisted-pair (STP) and unshielded twisted-pair (UTP).

  42. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Shielded Twisted Pair (STP)

  43. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Unshielded Twisted Pair (UTP)

  44. Physical Media نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس Unshielded Twisted Pair (UTP) Consists of 4 pairs (8 wires) of insulated copper wires typically about 1 mm thick. The wires are twisted together in a helical form. Twisting reduces the interference between pairs of wires. High bandwidth and High attenuation channel. Flexible and cheap cable. Category rating based on number of twists per inch and the material used CAT 3, CAT 4, CAT 5, Enhanced CAT 5 and now CAT 6,CAT 7

  45. نایب نت برگزار کننده دوره های تخصصی شبکه و لینوکس • EIA/TIA 568A vs 568 B