2.2 Networking Hardware Flashcards
What does a Network Interface Card (NIC) do?
Connects devices to networks via wired or wireless connections.
What is a hub, and why is it outdated?
A legacy device that allows multiple devices to connect but operates in broadcast mode, causing frequent data collisions.
What is the function of a network switch?
Directs data to the correct device, preventing collisions.
What are the two main types of switches?
Unmanaged (plug-and-play) and managed (configurable for security and VLANs).
What does a Wireless Access Point (WAP) do?
Extends wired networks into wireless realms by converting radio signals to data.
What is the primary role of a router?
Connects different networks and forwards data based on IP addresses.
What is the purpose of a firewall?
Enforces security rules to filter and control network traffic.
What is a patch panel used for?
Centralizes network cable connections for easier maintenance and organization.
What does Power over Ethernet (PoE) provide?
Delivers power and data over a single cable to devices like cameras and WAPs.
What are the PoE standards and their power outputs?
802.3af (13W), 802.3at (25W), and 802.3bt (up to 73W).
What is the function of a cable or DSL modem?
Converts signals from coaxial or telephone lines into Ethernet signals for network use.
What does an Optical Network Terminal (ONT) do?
Converts fiber optic signals into electrical signals for copper-based network connections.
What is Software Defined Networking (SDN)?
Virtualizes network hardware, allowing centralized management via software.
How does SDN separate network functions?
By dividing control, infrastructure, and application layers.
Why are managed switches preferred over unmanaged switches?
They provide enhanced security features and support VLANs and MAC filtering.
