Network Devices (Obj 1.2) Flashcards
(17 cards)
What is a hub?
Layer 1 device known as multi-port repeaters
Hubs connect multiple devices in a network but do not manage traffic.
What are the types of hubs?
- Passive – repeats signal without amplification
- Active – boosts signal to overcome cable length limitations
- Smart – active hub with enhanced features like SNMP for remote configuration
Each type serves different purposes in network management.
What do hubs connect?
Collision domains, making them bigger
This can lead to increased network traffic and potential collisions.
What is a bridge?
Layer 2 device that analyzes source MAC addresses
Bridges help in managing traffic between devices in a network.
What does a bridge do with MAC addresses?
Populates MAC address table and makes forwarding decisions based on destination MAC addresses
This enhances network efficiency.
What is the primary function of a bridge?
Breaks up collision domains, adds security and efficiency to networks
This helps in reducing packet collisions.
What is a switch?
Layer 2 device and modern alternative to hubs, known as multiport bridge
Switches manage network traffic more effectively than hubs.
How does a switch manage ports?
Each port acts as a separate collision domain
This reduces the chances of collisions in the network.
What does a switch learn to make forwarding decisions?
MAC addresses
This learning process helps in efficient traffic management.
What communication feature do switches support?
Full duplex support allows simultaneous communication without interference
This enhances overall network performance.
What is a router?
Layer 3 device that operates based on IP addresses
Routers connect different networks and manage traffic between them.
What does a router do with broadcast domains?
Separates broadcast domains, enhances network efficiency
This reduces unnecessary traffic and improves performance.
What types of networks do routers connect?
Dissimilar networks
This capability is essential for routing data across the internet.
What are Layer 3 switches (Multilayer switches)?
Combine functions of switches and routers, operate at Layer 3
They are efficient for internal networks but less effective for large-scale routing.
What should you remember about switches for exams?
Layer 2 devices focused on MAC addresses unless specified as multilayer or Layer 3 switches
This distinction is crucial for answering exam questions correctly.
What are routers focused on in the context of exams?
Layer 3 devices focused on IP addresses
Understanding this helps in identifying network device roles.
How should multilayer or Layer 3 switches be treated in exam questions?
Like a router
This is important for understanding their function in network routing.
