402 - Final Study cards Flashcards
(17 cards)
What is the fundamental purpose of a computer network?
To interconnect devices to share resources, information, and enable communication efficiently.
What is the role of a router in a computer network?
Directs data packets between different networks, selecting the optimal path.
What is the OSI Reference Model?
A 7-layer conceptual framework that standardizes network communication functions.
What is the significance of the OSI Reference Model?
Helps in understanding, designing, and diagnosing networks by dividing processes into manageable layers.
What is the purpose of subnetting in computer networking?
Divides a large IP network into smaller, manageable sub-networks (subnets).
What is the role of NAT in computer networking?
Allows multiple devices on a local network to share a single public IP address.
What is the purpose of internetworking protocols in computer networks?
Enable communication and data exchange across different networks.
What is the significance of layered networking architecture?
Simplifies design and troubleshooting by organizing network functions into independent layers.
What is the purpose of IP addressing in a computer network?
Uniquely identifies devices on a network, enabling accurate data routing.
What is the function of network routing protocols?
Determine the best path for data to travel across networks.
What are the layers in the OSI Reference Model? Describe each layer briefly.
- Physical – Transmits raw bits over the medium.
- Data Link – Handles error detection and frame synchronization.
- Network – Manages logical addressing and routing.
- Transport – Ensures reliable data delivery.
- Session – Manages sessions between applications.
- Presentation – Translates, encrypts, and compresses data.
- Application – Interfaces with end-user applications.
What is the difference between Hub, Switch, and Router?
- Hub: Broadcasts data to all devices, no traffic control.
- Switch: Forwards data only to the intended device, managing collision domains.
- Router: Connects different networks and directs data between them.
What is DNS? Explain how it works.
Translates human-friendly domain names into IP addresses by querying a sequence of DNS servers.
What are MAC addresses?
A unique identifier assigned to a network interface card (NIC) for communication at the data link layer.
What are the different ways to exchange data?
- Circuit switching
- Packet switching (datagram or virtual circuit)
- Direct connection models (client-server and peer-to-peer)
Fill in the blank: The OSI Model is a _______ conceptual framework that standardizes network communication functions.
7-layer
True or False: A router connects different networks and broadcasts data to all devices.
False
