9.2.3 Network hardware

• Match the network device with its function:

  Router ↔️ Connects multiple networks and directs data traffic

  Switch ↔️ Connects devices within a LAN

  Modem ↔️ Translates network signals for ISP

  Hub ↔️ Connects multiple devices on a LAN; broadcasts data

  Firewall ↔️ Protects network from unauthorized access

  NIC ↔️ Allows device to connect to a network
• A router connects multiple networks
• Switches forward data selectively within a LAN.
• A modem translates network signals for transmission via phone or cable lines
• A hub broadcasts data to all connected devices on a LAN.
• A network interface card (NIC) allows a device to connect to a network
• Firewalls protect networks by filtering incoming and outgoing traffic.
• Order the steps in data transmission between a network and an ISP:

  1️⃣ Data is sent from a device within the network.

  2️⃣ The data reaches the modem.

  3️⃣ The modem translates the signal for transmission.

  4️⃣ The data is sent to the ISP.
• Ethernet cables are used for connecting computers to local networks
• Fiber optic cables are immune to electromagnetic interference.
• Coaxial cables are commonly used for cable TV connections
• Twisted pair cables reduce signal noise in telephone connections.
• What is the primary use of Ethernet cables?

  Connecting computers to LANs
• Fiber optic cables are immune to electromagnetic interference
• Coaxial cables are commonly used for cable TV connections due to their high bandwidth.
• Which type of network cable reduces signal noise in telephone connections?

  Twisted Pair
• Match the cable type with its feature:

  Fiber Optic ↔️ Immune to interference

  Twisted Pair ↔️ Reduces signal noise

  Ethernet ↔️ High-speed data transfer

  Coaxial ↔️ High bandwidth for video
• What is the primary function of a Network Interface Card (NIC)?

  Enables network connectivity
• Routers forward data using IP addresses
• Switches forward data using MAC addresses within a local area network (LAN).
• Which network device connects multiple networks and directs data traffic?

  Router
• A modem translates network signals for use by an Internet Service Provider
• A hub broadcasts data to all devices on a LAN, regardless of the intended recipient.
• What does a Network Interface Card (NIC) allow a device to do?

  Connect to a network
• Which network device protects a network from unauthorized access by filtering traffic?

  Firewall
• Match the network device with its function:

  Router ↔️ Connects multiple networks

  Switch ↔️ Connects devices within a LAN

  Modem ↔️ Translates network signals

  Firewall ↔️ Protects network from unauthorized access
• Fiber optic cables are immune to electromagnetic interference
• A Network Interface Card (NIC) manages data transmission and reception between a device and the network.
• What type of network cable is used for high-speed data transfer over short distances?

  Ethernet
• Fiber optic cables are immune to electromagnetic interference
• Coaxial cables are commonly used for cable TV connections.
• What type of network cable reduces signal noise in telephone connections?

  Twisted Pair
• A Network Interface Card (NIC) enables devices to connect to a network
• The primary function of a NIC is to enable network connectivity.
• What are the two main types of NICs based on connection type?

  Wired and Wireless
• NICs use Ethernet and Wi-Fi protocols for connection standards
• Match the aspect of NICs with its description:

  Function ↔️ Enables network connectivity

  Types ↔️ Wired (Ethernet), Wireless (Wi-Fi)

  Connection Standards ↔️ Ethernet, Wi-Fi protocols
• Wired NICs use Ethernet protocols for data transmission.
• Which connection standards are supported by NICs?

  Ethernet and Wi-Fi
• Routers connect multiple networks