Internetworking Ai Flashcards
What are the main infrastructure components in an enterprise network?
- Firewalls
- Access points
- Wireless controllers
These components play crucial roles in network security and connectivity.
Name three types of network topologies.
- Star
- Mesh
- Hybrid
Each topology has its advantages and disadvantages depending on the network requirements.
What is a Local Area Network (LAN)?
A LAN is a network that connects devices in a limited area, typically using a hub.
Define Network Segmentation.
Network Segmentation is breaking up a massive network into smaller, manageable segments.
List four types of networking devices.
- Routers
- Switches
- Bridges
- Access Points
These devices facilitate communication and data transfer within networks.
What causes LAN Traffic Congestion?
- Too many hosts in a collision or broadcast domain
- Broadcast storms
- Too much multicast traffic
- Low bandwidth
- Adding hubs for connectivity
- A bunch of ARP broadcasts
Identifying these causes helps in troubleshooting and optimizing network performance.
What is a Broadcast Domain?
The set of all devices on a network segment that can hear all broadcasts sent out on that segment.
What are two advantages of using routers?
- They don’t forward broadcasts by default
- They can filter the network based on layer 3 information such as an IP address.
What are the functions of a router in a network?
- Packet switching
- Packet filtering
- Internetwork communication
- Path selection
These functions enable routers to manage data traffic efficiently.
What is Packet Switching?
It forwards or filters frames using logical addressing and provides important capacity.
Fill in the blank: Internetworking connects _______ or more networks together.
[two]
Define Collision Domain.
A network scenario where one device sends a packet and every other device on that segment must pay attention.
How do Bridges and Switches function in a LAN?
They break up collision domains.
What is the role of Access Points (APs)?
APs allow wireless devices to connect to a wired network and extend a collision domain.
What is the function of Firewalls?
Firewalls monitor and control incoming and outgoing network traffic based on predetermined security rules.
What is the OSI reference model?
A model created to help vendors develop interoperable network devices and software.
How many layers are in the OSI reference model?
Seven layers.
List the seven layers of the OSI model.
- Application layer (layer 7)
- Presentation layer (layer 6)
- Session layer (layer 5)
- Transport layer (layer 4)
- Network layer (layer 3)
- Data Link layer (layer 2)
- Physical layer (layer 1)
Each layer has specific functions in the communication process.
What does the Application Layer do?
It marks the spot where users communicate with the computer and includes functions like file transfers and email.
What is the purpose of the Presentation Layer?
It presents data to the Application layer and is responsible for data translation and code formatting.
What is the responsibility of the Session Layer?
It manages sessions between Presentation layer entities and keeps user data separate.
Name the three different modes of communication.
- Simplex
- Half-duplex
- Full-duplex
These modes define how data is transmitted between devices.
What does the Transport Layer do?
It segments and reassembles data into a single data stream and provides end-to-end data transport services.
What is a three-way handshake in connection-oriented communication?
A process where a device establishes a connection-oriented session with another device by sending SYN, ACK, and final acknowledgment segments.
