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Module 6.6

Module 6.6. Networking. Internet Connectivity.

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Module 6.6

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  1. Module 6.6 Networking

  2. Internet Connectivity By default, new computers typically come with the network cards installed, the proper drivers installed, and the network card is configured to use the Dynamic Host Configuration Protocol (DHCP) to receive TCP/IP configuration information automatically. DHCP gives the configuration settings required to connect to a TCP/IP network. These values will need to be delivered to each host using DHCP, or configured manually for each network connection.

  3. Internet Connectivity

  4. Internet Connectivity To edit TCP/IP properties for a network connection, open the Network Connections folder using the following methods: • On the Start menu, right-click My Network Places (or Network) and select Properties. • In My Network Places, click the View network connections link. • In the Network and Sharing Center, click the Manage network connections link. • On Windows 2000/XP, browse the Control Panel to the Network Connections icon. In the Network Connections folder, right-click the network connection and select Properties. In the Network and Sharing Center, you can also click the View status link for a connection, then click the Properties button.

  5. Wireless networking

  6. Wireless networking

  7. Wireless networking • The actual speed and maximum distance depends on several factors including obstructions (such as walls), antenna strength, and interference. • The speed of data transmission decreases as the distance between the transmitter and receiver increases. You can get the maximum distance or the maximum speed, but not both. • Adual band access point can use one radio to transmit at one frequency, and a different radio to transmit at a different frequency. For example, you can configure many 802.11n devices to use one radio to communicate at 5.75 GHz with 802.11a devices, and the remaining radios to use 2.4 GHz to communicate with 802.11n devices. • When you configure an access point, some configuration utilities use the term mixed mode to designate a network with both 802.11n and non-802.11n clients. In this configuration, one radio transmitter is used for legacy clients, and the remaining radio transmitters are used for 802.11n clients. • Many 802.11n access points can support clients running other wireless standards (802.11a/b/g). When a mix of clients using different standards are connected, the access point must disable some 802.11n features to be compatible with non-802.11n devices, which decreases the effective speed.

  8. Wireless Security

  9. Wireless Security

  10. Wireless Security

  11. Network Troubleshooting

  12. IPv6 The current IP addressing standard, version 4, will eventually run out of unique addresses, so a new system is being developed. It is named IP version 6 or IPv6. The IPv6 address is a 128-bit binary number. A sample IPv6 IP address looks like: 35BC:FA77:4898:DAFC:200C:FBBC:A007:8973. The following list describes the features of an IPv6 address: • The address is made up of 32 hexadecimal numbers, organized into 8 quartets. • The quartets are separated by colons. • Each quartet is represented as a hexadecimal number between 0 and FFFF. Each quartet represents 16-bits of data (FFFF = 1111 1111 1111 1111). • Leading zeros can be omitted in each section. For example, the quartet 0284 could also be represented by 284. • Addresses with consecutive zeros can be expressed more concisely by substituting a double-colon for the group of zeros. For example: • FEC0:0:0:0:78CD:1283:F398:23AB • FEC0::78CD:1283:F398:23AB (concise form) • If an address has more than one consecutive location where one or more quartets are all zeros, only one location can be abbreviated. For example, FEC2:0:0:0:78CA:0:0:23AB could be abbreviated as: • FEC2::78CA:0:0:23AB or • FEC2:0:0:0:78CA::23AB The 128-bit address contains two parts: the prefix and the Interface IP

  13. Homegroup A HomeGroup is a simple way of sharing resources and managing authentication to resources on a home network. The HomeGroup is created when a network interface is identified as a Homelocation.Be aware of the following HomeGroup details: • Use the HomeGroup utility in the Control Panel to create, join, or leave a HomeGroup, manage shared libraries or change/retrieve the HomeGroup password. • When creating a HomeGroup, a default password is provided. Use this password to connect other computers to the HomeGroup. • To join to a HomeGroup from a computer running any edition of Windows 7: • Identify the network connection as a Home location. • Click Join Now from the HomeGroup prompt in the Taskbar, or click Join Now within the HomeGroup utility from the Control Panel. • Select which types of libraries to share. • Provide the HomeGroup password. Note: Network Discovery must be on to join to a HomeGroup. • To share individual files and folders within the HomeGroup, right-click the file or folder, click Share, and select one of the following: • HomeGroup (Read) shares the file or folder with read-only privileges with the entire HomeGroup. • HomeGroup (Read/Write) shares the file or folder with read-write privileges with the entire HomeGroup.

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