Notes

Computer Networks vs. Distributed Systems

• Computer Network: A system for connecting computers and devices to facilitate communication and resource sharing.
• Distributed System: Built on top of networks, offering users transparent access without requiring knowledge of geographical locations.

Types of Networks

• WAN (Wide Area Network): Large geographical range, includes public and packet-switching networks.
• MAN (Metropolitan Area Network): City-scale, though less commonly used today.
• LAN (Local Area Network): High-speed, low-error rate, usually within a building or campus.
• PAN (Personal Area Network) and BAN (Body Area Network): Small range networks for personal use or health monitoring.

Network Components and Subnets

• Host: Devices like computers and servers.
• Communications Subnet: Includes active components (routers, switches) and passive components (transmission media).

Subnet Design Approaches

• Point-to-Point: Direct connections between subnet nodes; uses circuit, message, and packet-switching methods.
• Broadcast: Shared communication channel among nodes, requiring mechanisms to manage data collisions.

Network Architecture and Layered Models

• OSI Model: 7-layer architecture standardizing data communication, from physical data transmission to application protocols.
  • Layers range from Physical (1) to Application (7), each with specific roles.
• TCP/IP Model: Practical 4-layer architecture (Application, Transport, Internet, Network Access).
• ATM Model: Asynchronous Transfer Mode, a unique 3D architecture for high-speed networking.

Physical Layer Essentials

• Signal Transmission: Fundamental bits representation, encoding, and channel characteristics like capacity, delay, and error rate.
• Channel Capacity: Defined by bandwidth and measured in bits per second (bps); affected by frequency and signal strength.

Notice, This note is in TURKISH.

• Software Testing Expertise: The knowledge and skills necessary to manage the software testing process and enhance software quality.
• Fundamentals of Software Testing: The basic concepts of the testing process and why they are important.
• Software Testing Methods: Introduction to various software testing methods, such as unit testing, integration testing, and system testing.
• Advanced Software Testing Techniques: More complex testing techniques and advanced strategies.
• API: Testing processes conducted through Application Programming Interfaces (APIs) and their role in software testing.
• SQL and Databases: Preparing and validating test data using database queries and SQL.
• MindMap and Test Scenario: Visualizing and organizing test scenarios using MindMap.

COMING SOON