TEJ3M Networking Unit Review (2024-11) PDF

**TEJ3M Networking Unit Review** **(2024-11)** +-----------------------------------------------------------------------+ | **\[A4\]** Describe **network** ***concepts***, ***services***, and | | ***security***; | |...

**TEJ3M Networking Unit Review** **(2024-11)** +-----------------------------------------------------------------------+ | **\[A4\]** Describe **network** ***concepts***, ***services***, and | | ***security***; | | | | - - - - | +=======================================================================+ | **\[B4\]** **Design**, **install**, **configure**, **test**, and | | **troubleshoot** **networks**; | | | | - - - - - | +-----------------------------------------------------------------------+ **Computer Networking Basics:** - - - - - - - - - - - - - - - -------------------------------------------------------------------------------------------------------- **Ethernet Cable (Twisted Pair)** **RJ45 port\ **Coaxial cable** **RJ45 connector\ (Ethernet port)** (Ethernet connector)** ----------------------------------- ----------------------- ------------------- ------------------------   -------------------------------------------------------------------------------------------------------- - - - - - - **MAC address = Hardware NIC address** **IP address → Used on IP networks** ---------------------------------------- --------------------------------------  - - - - - - - - - **Computer Network Communication Protocols:** A **network protocol** is a well defined standard method for exchanging or transferring data around a computer network. - - - - - - - **Network Addressing Protocols (IP Addressing):** - - - - - - - **Start Address** **End Address** **Class** ------------------- --------------------- ----------- **192.168.0.0** **192.168.255.255** C **172.16.0.0** **172.31.255.255** B **10.0.0.0** **10.255.255.255** A - - - - - - - - - - Class First \# Network Mask --------- ---------- --------------- Class A 0-127 255.0.0.0 Class B 128-191 255.255.0.0 Class C 192-223 255.255.255.0 - **The Basics of Installing a Network** The necessary **hardware** required for building a computer network: - - - - The **basics steps** to installing a **[wired network]**: - - - - - - - - - - - - - - **Connecting Ethernet cables to a router.** +-----------------------------------+-----------------------------------+ | | **→ Ethernet Ports** - These | | | ports connect to the internal | | | LAN. These ports are usually | | | labeled "Ethernet" or "LAN". All | | | devices connected to these ports | | | are on the same local network | | | (LAN). | | | | | | **→ Internet Port** - This port | | | is used to connect the device to | | | another network. The Internet | | | port connects the router to a | | | different network than the | | | Ethernet ports. This port is | | | often used to connect the Cable | | | or DSL modem to the Internet. | | | | | | **→ Power port** | +-----------------------------------+-----------------------------------+ **Wireless technologies** use ***electromagnetic waves*** to carry data between devices. **Network Diagnostic Tools** There are many ways that a **network connection can fail**: - - - - Knowing the **IP address** for a computer/device is one of the ***first steps*** to ***diagnosing a network problem***. There are several **command line tools** for ***checking the IP address*** and configuration: - - - The **IP address** your computer shows can help ***troubleshoot network issues***: - - **Address Class** **Start Address** **End Address** ------------------- ------------------- --------------------- **A** **10.0.0.0** **10.255.255.255** **B** **172.16.0.0** **172.31.255.255** **C** **192.168.0.0** **192.168.255.255** - - - One of the most fundamental diagnostic tools for networked connectivity is the **ping** command. - - - - - - - - **Constructing an Ethernet Cable:** - Ethernet Crimp tool Wire cutters Ethernet Cable Tester ------------------------ -------------- -----------------------   - Ethernet Cable (Cat 5e, 6, 7,...) RJ45 Crimpable Connectors ------------------------------------ ---------------------------  - Strip 2 cmm from Ethernet Cable Unwind the Twisted Pairs --------------------------------- ---------------------------------------------------------------------------------------  Arrange Wires by Colours Trim the Wires ------------------------------------------------------------ ------------------------ http://www.groundcontrol.com/galileo/images/networkz84.jpg  Position Wires in the RJ45 Connector Push the Wires in the RJ45 Connector -------------------------------------- --------------------------------------------------------------------------------  Verify Wire Positions in the RJ45 Connector Crimp the RJ45 Connector --------------------------------------------- --------------------------  - -- -----------------------  -- ----------------------- **Implementing Network Shares and Services for Users:** - - - - - - - - - - - **Computer Networking Security:** - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - **Computer Networking Sharing of Resources and Services:** - - - - - - - - -