Networking Hardware Flashcards
Memorize and understand what each Networking Hardware does (13 cards)
What does a Network Interface Card (NIC) do?
A NIC (Network Interface Card) lets a device connect to a network, either wired or wireless. It’s like your computer’s passport to get on the network.
(Think of it as the network handshake chip.)
What is a hub in networking?
A hub is a basic networking device that broadcasts all incoming data to every port, regardless of the destination. It’s inefficient and mostly outdated.
(Like yelling in a room hoping the right person hears it.)
What is a switch and how is it better than a hub?
A switch is smarter than a hub — it sends data only to the correct device by using MAC addresses. Saves bandwidth and improves performance.
(Like whispering directly to the right person.)
What’s the difference between managed and unmanaged switches?
Managed switches offer control, configuration, monitoring, and security options. Unmanaged switches are plug-and-play with no customization.
(Managed = smart assistant)
(Unmanaged = power strip)
What is Power over Ethernet (PoE) and what are the main types?
PoE sends both data and electrical power over Ethernet cables. Types:
- PoE (802.3af): 15.4W
- PoE+ (802.3at): 30W
- PoE++ (802.3bt Type 3): 60W
- PoE++ (802.3bt Type 4): 100W
(PoE = combo charger for power + internet)
What’s the difference between a PoE injector and a PoE switch?
A PoE injector adds power to the Ethernet line manually, while a PoE switch supplies power natively through its ports.
(Injector = wall adapter, PoE switch = built-in USB charging port.)
What does a wireless Access Point (AP) do?
An Access Point lets wireless devices connect to a wired network. It extends network coverage without needing cables for each device.
(Think of it like a wireless extension cord.)
What does a router do in a network?
A router connects different networks and directs data between them. It also assigns IP addresses and handles traffic.
(Router = traffic cop for the internet.)
What is the purpose of a firewall in networking?
A firewall monitors and filters network traffic for security. It blocks unwanted or dangerous data from getting in or out.
(Firewall = security guard for your data.)
What does a modem do, and what are the main types?
A modem converts digital data into a format suitable for transmission and vice versa. Types:
- Dial-up
- DSL (Digital Subscriber Line)
- Cable
(Modem = translator between internet and your home.)
What is a patch panel used for?
A patch panel organizes and connects multiple Ethernet cables in one central location, usually in a network closet.
(Patch panel = organized phonebook of cables.)
What is an Optical Network Terminal (ONT) and where is it used?
An ONT converts fiber optic signals into Ethernet for use in home networks, often used in Fios connections.
(ONT = fiber translator box at your house.)
What is Software-Defined Networking (SDN)?
SDN lets you control and configure the network programmatically using software, separating control from hardware.
(SDN = remote control for your network.)
