PPT comp

• Networking hardware requirements

  • DSL (Digital Subscriber line) or Cable Modem
  • Wired or wireless router
  • Wired or wireless network adapters
  • Ethernet cabling
• DSL or cable modem

  Connects your computer to a high-speed DSL or cable Internet connection
• Wired or wireless router

  Connects your DSL or cable modem to your home network
• Router ports

  • LAN- LOCAL AREA NETWORK
  • WAN- WIDE AREA NETWORK
• Wired or wireless network adapters


  A device in your computer (or printers, gaming consoles, and other networking equipment) that connects your computer to your network
• Ethernet cabling

  Used to connect your wired network adapters to a router or network switch
• Router

  Connects your computers to one another, while your modem connects you to the internet
• Wireless throughput


  The speed at which a router can transfer data, dependent on the wireless standard it uses
• Wired throughput

  The wired half of your router will come in one of two speeds: 10/100 Mbps and 10/100/1000 Mbps (also known as "gigabit")
• Wireless range

  Wireless routers can only reach a limited area of distance, wireless extenders can extend the network further
• It is important to maintain routers and modems in good condition to ensure a smooth and secure internet experience
• Possible problems of a system

  • System has no power at all
  • System is inoperative
  • Certain keys do not function
• Diagnosis and identification of faulty system


  • Power cable is unplugged
  • Defective power cable
  • Power supply failure
  • Faulty outlet; circuit breaker or fuse blown
  • Expansion card is partially dislodged from expansion slot on the motherboard
  • Defective floppy disk drive or tape drive
  • Defective expansion card
  • Keys are jammed or defective
• Data backup

  Creating a redundant copy of data so that in case anything happens to the original data, you have a spare copy
• How to back up files in Windows 7


  1. Click Start

  2. Go to Control Panel

  3. Go to System and Security

  4. Click Backup and Restore

  5. At the Back up or restore your files screen, click Set up backup

  6. Select where you want to save the backup and click Next

  7. Choose Let Windows choose (recommended)

  8. Click Next

  9. Verify the backup details

  10. Click Save settings and run backup

  11. The process will now start. This might take some time because your system is backing up all data on your system

  12. After the process is complete, the Back up or restore your files wizard will display the size of the backup file
• Malware

  • Virus
  • Worm
  • Trojan
  • Spyware
  • Adware
  • Spam
  • Phishing
  • Pharming
• Malware

  Malicious codes, objects or content that infiltrates your computer, resulting in damage and causing your system to act in an undesirable manner
• Virus


  A malicious program that transfers from one computer to another by any type of means
• Worm

  A malicious program designed to replicate itself and transfer from one computer to another
• Trojan

  A malicious program that is disguised as a useful program but once downloaded or installed, leaves your PC unprotected and allows hackers to get your information
• Spyware

  A program that runs in the background without you knowing it
• Adware


  A program designed to send you advertisements
• Spam


  Unwanted email mostly from bots or advertisers
• Phishing


  Its goal is to acquire sensitive personal information like passwords and credit card details
• Pharming


  A more complicated way of phishing where exploits the DNS (domain name system)