Introduction Flashcards
What is a network?
A network is any connection between two or more computers, ranging from simple USB connections to the global internet.
What is the purpose of networking?
Networking enables file sharing, communication (e.g., email, messaging), and remote execution (e.g., using rlogin or telnet).
What is bit rate in networking?
Bit rate refers to the speed at which data is transmitted, measured in bits per second, and is often confused with bandwidth.
What is latency in networking?
Latency is the time it takes for a bit of data to reach its destination, crucial for applications like online gaming or video conferencing.
What is a LAN?
A LAN (Local Area Network) is a small, localized network connecting devices in a single location, typically using Ethernet cables and hubs.
What is a WAN?
A WAN (Wide Area Network) connects multiple LANs over long distances and includes technologies like fiber optics and ATM switches.
What does scalability mean in networking?
Scalability refers to a network’s ability to function efficiently at both small and large scales.
What is robustness in networking?
Robustness is a network’s ability to operate effectively despite hardware failures or data losses.
What is the OSI Model?
The OSI Model is a 7-layer framework for understanding network interactions, including layers for physical transmission, data integrity, routing, and more.
How does the TCP/IP Model differ from the OSI Model?
The TCP/IP model is a 5-layer model used for internet communication, with fewer layers than the OSI model, combining the presentation and session layers into the application layer.
What is ARP (Address Resolution Protocol)?
ARP resolves IP addresses to MAC addresses within a local network to ensure proper packet delivery.
What is the difference between the OSI and TCP/IP Models?
The OSI Model is theoretical with 7 layers, while TCP/IP is practical, using 5 layers and handling session/presentation functions in the application layer.
What is the purpose of networking layers?
Layers provide abstraction, allowing higher layers to focus on user data while lower layers manage physical transmission.
How did the integration of TCP/IP into UNIX impact the internet?
t enabled widespread adoption of the internet by providing affordable networking hardware and interoperable communication protocols.
How does data flow through the layers during email transmission?
Data moves from the Application Layer (email) down through each layer for routing and reliability, and up through layers at the destination, where headers are stripped.
What are the components that networking relies on?
Networking relies on protocols (rules for data communication) and hardware (physical devices like cables, switches, routers).
