2232021 RAFIQUL 1 Hardware Maintenance Troubleshooting 2232021 RAFIQUL

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Hardware Maintenance & Troubleshooting 2/23/2021 RAFIQUL 3

A+ Core Hardware Optional Device • Speaker • Plotter • Pendrive • Digital Camera • Printer • Joystick Etc. . . • Motherboard • Processor • Ram • BIOS and CMOS • H. D. D. ( Hard Disk Drive( • Floppy Drives • Laptop • Video card • Monitor • CD/DVD Drive • Sound • Printers • Network • Cables and Connectors 2/23/2021 RAFIQUL 4

Computer Configuration • Motherboard • Processor • Ram • H. D. D. ( Hard Disk Drive( • Monitor • CD/DVD Drive • Keyboard • Mouse • Casing with Power Supply 2/23/2021 RAFIQUL 5

������� Heat Sing AGP Card PCI Slot Micro Processor CMOS Battery RAM South Gate IDE Data Cable 2/23/2021 Co-Processor RAFIQUL 7

PS/2 Keyboard Connector PS/2 Mouse Connector Play Station USB Ports Serial Communication Port Parallel Port VGA Port Gigabit RJ-45 Ethernet Lan Port Microphone Jack Input Sound Line in Jack tv carder jonno use Audeo out jack Output jack 2/23/2021 RAFIQUL 8

Microprocessor ������� Pin less Processor Dual Core 2/23/2021 Pin Processor Core i 5 Core i 3 RAFIQUL Core i 7 10

RAM SDRAM (Synchoronus Dynamic Random Access Memory) DDR (Double Data Rate Random Access Memory) DDR 2 (Double Data Rate 2 Random Access Memory) DDR 3 (Double Data Rate 3 Random Access Memory) DDR 4 (Double Data Rate 4 Random Access Memory) 2/23/2021 RAFIQUL 11

TV Card IDE Hard Drive Network Card USB 2/23/2021 Modem Card RAFIQUL 12

Network System 01. Data Sharing 02. Hardware Sharing 03. Security implementation 04. Policy implementation 05. Central Controlling 2/23/2021 RAFIQUL 13

Networking Data Sharing Hardware sharing Security Sharing Policy Sharing Central Sharing Networking Requirement LAN Card Cable Connector Crimping Tools Cable Transfer Switch LAN Card NIC=Network Interface Card Ethernet Card 2/23/2021 RAFIQUL 14

1. Fiber Optical 2. Coaxial Cable 3. Twisted Pair Cableing a. STP b. UTP Cat 1 Cat 2 Cat 3 Cat 4 Cat 5 e Cat 6 a 2/23/2021 RAFIQUL 15

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IP Address Class A = 1 - 126 Class B = 128 - 191 Class C = 192 - 223 Subnet Mask – 255. 0 Class A = 255. 0. 0. 0 Class B = 255. 0. 0 Class C = 255. 0 Class D = 224 - 239 Class E = 240 - 255 2/23/2021 RAFIQUL 18

Public IP- A public IP address is the address that is assigned to a computing device to allow direct access over the Internet. A web server, email server and any server device directly accessible from the Internet are candidate for a public IP address. A public IP address is globally unique, and can only be assigned to an unique device Private IP - A private IP address is the address space allocated by Inter. NIC to allow organizations to create their own private network. There are three IP blocks (1 class A, 1 class B and 1 class C) reserved for a private use. 2/23/2021 RAFIQUL 19

Cabling System Straight Cabling System 01. Straight Cabling System 02. Crossover Cabling System 03. Rollover Cabling System SL Side A SL Side B 1 Orange White 2 Orange 3 Green White 4 Blue 5 Blue White 6 Green 7 Brown White 8 Brown Rollover Cabling System Crossover Cabling System SL Side A SL Side B 1 Orange White 3 Green White 1 Orange White 8 Brown 2 Orange 6 Green 2 Orange 7 Brown White 3 Green White 1 Orange White 3 Green White 6 Green 4 Blue 5 Blue White 4 Blue 6 Green 2 Orange 6 Green 3 Green White 7 Brown White 2 Orange 8 Brown 1 Orange White 2/23/2021 RAFIQUL 20

Topology Ring Topology Star Topology Tree Topology Bus Topology Mesh Topology 2/23/2021 RAFIQUL Hybrid Topology 21

�� ������� ��� IP ���� ��� IP – 192. 168. 1. 3 SM- 255. 0 IP – 192. 168. 1. 2 SM- 255. 0 IP – 192. 168. 1. 4 SM- 255. 0 IP – 192. 168. 1. 10 SM- 255. 0 2/23/2021 IP – 192. 168. 1. 5 SM- 255. 0 IP – 192. 168. 1. 9 SM- 255. 0 IP – 192. 168. 1. 8 SM- 255. 0 RAFIQUL IP – 192. 168. 1. 7 SM- 255. 0 IP – 192. 168. 1. 6 SM- 255. 0 22

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