Network Devices
This network component connects different Local Area Networks (LANs) and is responsible for sending data over the internet.
What is a router?
This common physical interface on network devices uses an 8-wire connector and is typically found on Ethernet cables.
What is an RJ45 port?
Network speeds are measured in this unit, representing data transfer per second.
What are bits per second (bps)?
This is a digital communications network that allows nodes to share resources.
What is a network?
This device connects end hosts within the same LAN and typically has many network interfaces.
What is a switch (specifically, a Layer 2 switch)?
This type of copper Ethernet cable is used to connect a PC to a switch, or a router to a switch, because their transmit and receive pins are opposite.
What is a straight-through cable?
This is the informal name for the 100 Mbps Ethernet standard that uses copper twisted-pair cabling.
What is 100Base-T (or Fast Ethernet)?
This term is often represented as a cloud in network diagrams when specific details about its internal workings are not necessary.
What is the Internet?
This security device controls traffic entering and exiting a network based on configured rules, acting as a barrier against unauthorized access.
What is a firewall?
When connecting two switches together with copper cables, this specific type of cable is required if Auto MDI-X is disabled.
What is a crossover cable?
The IEEE 802.3 standard that defines Gigabit Ethernet over copper twisted-pair cabling, supporting speeds of 1 Gbps.
What is 1000Base-T?
This layer of the OSI model is responsible for the physical transmission of data bits over the network medium, including cabling and interfaces.
What is the Physical Layer (Layer 1)?
A device that provides functions or services for clients, which can be dedicated hardware or even a PC or smartphone.
What is a server?
This type of fiber optic cable uses a smaller core and is designed for very long distances, often kilometers.
What is single-mode fiber?
his term describes the structure of common copper Ethernet cables, consisting of four pairs of twisted wires.
What is Unshielded Twisted Pair (UTP)?
This layer of the OSI model is where Ethernet operates, responsible for framing, MAC addressing, and error detection within a local segment.
What is the Data Link Layer (Layer 2)?
This term refers to both clients and servers, indicating any device that connects to the network and communicates over it.
What are end hosts or endpoints?
This feature on modern network devices automatically detects and adjusts pin configurations, making it unnecessary to distinguish between straight-through and crossover cables.
What is Auto MDI-X?
This type of fiber optic cable is suitable for intermediate distances (e.g., 250 meters) and allows multiple angles of light waves to propagate through its core.
What is multimode fiber?
This process involves adding header and trailer information to data as it moves down through the layers of the OSI model.
What is encapsulation?