Network Interface Cards (NICs) and Local Area Networks (LANs)
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Questions and Answers

What is the primary function of a network interface card (NIC)?

  • To issue internet protocol (IP) addresses to devices on a network
  • To connect a device to the internet via a modem
  • To connect a device to a local area network (LAN) either wirelessly or through a wired connection (correct)
  • To create a wireless access point (WAP) for wireless connections

    • What is the term used to describe the creation of a wireless local area network (WLAN)?

  • Local Area Network
  • Wireless Local Area Network
  • Wireless Fidelity (correct)
  • Internet Protocol

    • What is the primary function of a router in a home network?

  • To issue internet protocol (IP) addresses to devices on a network
  • To direct data around the network to the appropriate location (correct)
  • To connect devices to the internet via a modem
  • To create a wireless access point (WAP) for wireless connections

    • What type of IP address is usually created by the user themselves in the settings of the router?

    <p>Static IP address</p> Signup and view all the answers

    What is the term used to describe the collection of devices connected to a router via the internet?

    <p>Internet</p> Signup and view all the answers

    What is the primary function of a DHCP service in a network?

    <p>To assign an IP address to devices and recycle it when disconnected</p> Signup and view all the answers

    What is the main difference between a hub and a switch in a network?

    <p>A hub transmits signals to all devices, while a switch only transmits to the intended device</p> Signup and view all the answers

    What is the purpose of a MAC address in a network?

    <p>To identify devices on a network and enable them to connect</p> Signup and view all the answers

    What happens to an IP address when a device is removed or unplugged from a network?

    <p>The IP address is recycled to a replacement device</p> Signup and view all the answers

    What is the main advantage of using a switch over a hub in a network?

    <p>A switch can forward packets of data to the intended node only, increasing the efficiency of the network</p> Signup and view all the answers

    Study Notes

    Network Interface Card (NIC)

    • A NIC is required for a device to connect to a network, either wirelessly or through an Ethernet cable
    • Most NICs have wireless capability and can connect to a network without cables

    Local Area Network (LAN)

    • A LAN is a small network that connects devices in a limited geographical area
    • Devices on a LAN are connected using a wired or wireless connection

    Wireless Fidelity (Wi-Fi) and Wireless Local Area Network (WLAN)

    • Wi-Fi enables the creation of a WLAN
    • A WLAN connects devices wirelessly using a wireless access point (WAP)

    Router

    • A router connects devices to the internet via a modem and ISP
    • A router directs data around the network to the appropriate location (node)
    • A router stores node addresses in its internal memory and finds the most efficient route to send packets of data
    • A router also issues Internet Protocol (IP) addresses to devices on a network
    • IP addresses can be static or dynamic, with dynamic addresses being the more common type

    Internet Protocol (IP) Addresses

    • Static IP addresses are rarely used as they can cause problems on a network if set incorrectly
    • Dynamic IP addresses are issued by routers using the Dynamic Host Configuration Protocol (DHCP)
    • DHCP enables a router to assign an IP address to any new device connected to a network
    • Dynamic IP addresses ensure that there is no duplication of addresses on a network and enable all devices to share the internet connection

    Network Hub

    • A network hub enables wired devices to connect to each other in a LAN
    • A hub transmits signals to all devices on a network, but can create slow networks as some signals may be unnecessary
    • A hub is connected to a router, and devices are connected to the hub using cables

    Media Access Control (MAC) Address

    • Every device connected to a network has a unique MAC address provided by the manufacturer
    • A switch records a device's MAC address when it connects to the network for the first time
    • The MAC address is recognized when the device connects to the switch again, allowing the device to be identified by the network

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    Learn about Network Interface Cards (NICs) and their role in connecting devices to a network, either wirelessly or through a wired connection.

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