3.2a Wired & Wireless networks

• What is the specification code for the OCR exam board related to Wired & Wireless Networks?

  J277
• What is required for wireless connections to function?

  A wireless network interface card (WNIC)
• How do wireless connections generally compare to wired connections in terms of speed?

  Wireless connections generally have a slower speed
• What factors can affect the speed of wireless connections?

  The distance from the wireless router and obstacles like walls or bad weather
• What physical components are used in wired connections?

  Copper or fibre optic wires
• What is required for wired connections to connect to a network?

  A network interface card (NIC)
• What is the most commonly used wired connection protocol?

  Ethernet
• Compare wired and wireless networks in terms of movement, transmission speed, security, and required hardware.

  • Wired Networks:
  • Restricted movement
  • Faster transmission speed
  • More secure
  • Requires NIC
  • Wireless Networks:
  • Freedom of movement
  • Slower transmission speed
  • Less secure
  • Requires WNIC
• What is the main disadvantage of wireless connections compared to wired connections?

  They are less secure
• What is a key advantage of wireless connections?

  Freedom of movement
• What does a WNIC stand for?

  Wireless Network Interface Card
• What does a NIC stand for?

  Network Interface Card