Networking

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Networking

A computer network or data network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.
Network computer devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as personal computers, phones, servers as well as networking hardware. Two such devices can be said to be networked together when one device is able to exchange information with the other device, whether or not they have a direct connection to each other.

Technologies

The following are the various technologies related to Networking

  • Wan technologies
  • Routers & Switches
  • VPN
  • Protocols
  • NAT
  • Authentication

Job Roles

  • Network Engineer
  • System Administrator
  • Network Specialist
  • Solution Architect
  • Tech Support Engineer

  • Course Structure

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    CCNA (R&S)


    Operation of IP Data Networks

    • Recognize the purpose and functions of various network devices such as Routers, Switches, Bridges and Hubs.
    • Select the components required to meet a given network specification.
    • Identify common applications and their impact on the network
    • Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models.
    • Predict the data flow between two hosts across a network.
    • Identify the appropriate media, cables, ports, and connectors to connect Cisco network devices to other network devices and hosts in a LAN

    LAN Switching Technologies

    • Determine the technology and media access control method for Ethernet networks
    • Identify basic switching concepts and the operation of Cisco switches.
    • Collision Domains
    • Broadcast Domains
    • Types of switching
    • CAM Table
    • Configure and verify initial switch configuration including remote access management.
    • Cisco IOS commands to perform basic switch setup
    • Verify network status and switch operation using basic utilities such as ping, telnet and ssh.
    • Identify enhanced switching technologies
    • RSTP
    • PVSTP
    • Etherchannels
    • Describe how VLANs create logically separate networks and the need for routing between them.
    • Explain network segmentation and basic traffic management concepts
    • Configure and verify VLANs
    • Configure and verify trunking on Cisco switches
    • DTP
    • Auto negotiation
    • Configure and verify PVSTP operation
    • describe root bridge election
    • spanning tree mode

    IP addressing (IPv4 / IPv6)

    • Describe the operation and necessity of using private and public IP addresses for IPv4 addressing
    • Identify the appropriate IPv6 addressing scheme to satisfy addressing requirements in a LAN/WAN environment.
    • Identify the appropriate IPv4 addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.
    • Describe the technological requirements for running IPv6 in conjunction with IPv4 such as dual stack
    • Describe IPv6 addresses
    • Global unicast
    • Multicast
    • Link local
    • Unique local
    • Eui 64
    • Autoconfiguration

    IP Routing Technologies

    • Describe basic routing concepts
    • CEF
    • Packet forwarding
    • Router lookup process
    • Describe the boot process of Cisco IOS routers
    • POST
    • Router bootup process
    • Configure and verify utilizing the CLI to set basic Router configuration
    • Cisco IOS commands to perform basic router setup
    • Configure and verify operation status of a device interface, both serial and ethernet
    • Verify router configuration and network connectivity
    • Cisco IOS commands to review basic router information and network connectivity
    • Configure and verify routing configuration for a static or default route given specific routing requirements
    • Manage Cisco IOS Files
    • Boot preferences
    • Cisco IOS image(s)
    • Licensing
    • Show license
    • Change license

    Differentiate methods of routing and routing protocols

    • Static vs. Dynamic
    • Link state vs. Distance Vector
    • Administrative distance
    • split horizon
    • metric
    • next hop
    • ip routing table
    • Passive Interfaces

    OSPF

    • Configure and verify OSPF (single area)
    • Benefit of single area
    • neighbor adjacencies
    • OSPF states
    • Discuss Multi area
    • Configure OSPF v2
    • Configure OSPF v3
    • Router ID
    • Passive interface
    • LSA types

    Configure and verify EIGRP (single AS)

    • Feasible Distance / Feasible Successors /Administrative distance
    • Feasibility condition
    • Metric composition
    • Router ID
    • Auto summary
    • Path selection
    • Load balancing
    • Equal
    • Unequal
    • Passive interface

    Configure and verify inter-VLAN routing (Router on a stick)

    • sub interfaces
    • upstream routing
    • encapsulation
    • Configure SVI interfaces

    IP Services


    Configure and verify DHCP (IOS Router)

    • configuring router interfaces to use DHCP
    • DHCP options
    • excluded addresses
    • lease time

    Describe the types, features, and applications of ACLs

    • Standard
    • Sequence numbers
    • Editing
    • Extended
    • Named
    • Numbered
    • Log option
    • Configure and verify ACLs in a network environment
    • Named
    • Numbered
    • Log option

    Identify the basic operation of NAT

    • Purpose
    • Pool
    • Static
    • 1 to 1
    • Overloading
    • Source addressing
    • One way NAT
    • Configure and verify NAT for given network requirements
    • Configure and verify NTP as a client

    Recognize High availability (FHRP)

    • VRRP
    • HSRP
    • GLBP
    • Configure and verify Syslog
    • Utilize Syslog Output
    • Describe SNMP v2 & v3

    Network Device Security

    • Configure and verify network device security features such as
    • Device password security
    • Enable secret vs enable
    • Transport
    • Disable telnet
    • SSH
    • VTYs
    • Physical security
    • Service password
    • Describe external authentication methods
    • Configure and verify Switch Port Security features such as
    • Sticky MAC
    • MAC address limitation
    • Static / dynamic
    • Violation modes
    • Err disable
    • Shutdown
    • Protect restrict
    • Shutdown unused ports
    • Err disable recovery
    • Assign unused ports to an unused VLAN
    • Setting native VLAN to other than VLAN 1
    • Configure and verify ACLs to filter network traffic
    • Configure and verify an ACLs to limit telnet and SSH access to the router

    Troubleshooting

    • Identify and correct common network problems
    • Utilize netflow data
    • Troubleshoot and correct common problems associated with IP addressing and host configurations.

    Troubleshoot and Resolve VLAN problems

    • identify that VLANs are configured
    • port membership correct
    • IP address configured

    Troubleshoot and Resolve trunking problems on Cisco switches

    • correct trunk states
    • correct encapsulation configured
    • correct vlans allowed

    Troubleshoot and Resolve Spanning Tree operation issues

    • root switch
    • priority
    • mode is correct
    • port states

    Troubleshoot and Resolve routing issues

    • routing is enabled
    • routing table is correct
    • correct path selection

    Troubleshoot and Resolve OSPF problems

    • neighbor Adjancies
    • Hello and Dead timers
    • OSPF area
    • Interface MTU
    • Network types
    • Neighbor states
    • OSPF topology database

    Troubleshoot and Resolve EIGRP problems

    • neighbor adjancies
    • AS number
    • Load balancing
    • Split horizon

    Troubleshoot and Resolve interVLAN routing problems

    • Connectivity
    • Encapsulation
    • Subnet
    • Native VLAN
    • Port mode trunk status

    Troubleshoot and Resolve ACL issues

    • Statistics
    • Permitted networks
    • Direction
    • Interface

    Troubleshoot and Resolve WAN implementation issues

    • Serial interfaces
    • PPP
    • Frame relay

    Troubleshoot and Resolve Layer 1 problems

    • Framing
    • CRC
    • Runts
    • Giants
    • Dropped packets
    • Late collision
    • Input / Output errors
    • Monitor NetFlow statistics
    • Troubleshoot etherchannel problems

    WAN Technologies

    • Identify different WAN Technologies
    • Metro Ethernet
    • VSAT
    • Cellular 3G / 4G
    • MPLS
    • T1 / E1
    • ISDN
    • DSL
    • Frame relay
    • Cable
    • VPN
    • Configure and verify a basic WAN serial connection
    • Configure and verify a PPP connection between Cisco routers
    • Configure and verify Frame Relay on Cisco routers
    • Implement and troubleshoot PPPoE

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