ICT Department - Network Applications Quiz

Course Overview

• Course Name: Mobile Communications & Wireless Technology (IT 709)
• Duration: 4 years, 7th semester
• Instructor: Tawffeeg Mohammed Tawfeeg

Course Units

• Unit 1: Introduction
• Unit 2: Wireless Transmission Media
• Unit 3: Wireless Links and Network Characteristics
  • Elements of a wireless network
• Unit 4: WiFi Wireless LANs
  • 802.11 MAC Protocol
  • Collision-avoidance techniques
  • Addressing issues with hidden terminals
  • Technologies: WiMax and Bluetooth
• Unit 5: Mobility Management
  • Mobility within the same subnet
  • Mobile routing and management
• Unit 6: Cellular Internet Access
  • Generations: 2G, 3G, 4G, and 5G
• Unit 7: Mobile IP and Handoff in GSM

Textbook

• Title: Computer Networking: A Top Down Approach
• Authors: Jim Kurose, Keith Ross
• Edition: Fifth edition, Addison-Wesley, July 2010

Course Evaluation

• Labs + Assignments: 25 Marks
• Midterm Exam + Quizzes + Seminars: 15 Marks
• Final Exam: 60 Marks

OSI & TCP/IP Models

• Application Layer: Interface between user and network
• Application protocols facilitate process-to-process communications over IP.

Network Applications

• Examples: E-mail, Internet telephone, Web browsing, Real-time video, Instant messaging, Remote login, P2P file sharing, Multi-user gaming, Streaming video.

Application Architectures

• Types: Client-server, Peer-to-peer (P2P), and Hybrid models.

Network Application Development

• Programs operate across different end systems and communicate via a network.
• Applications communicate using sockets, which serve as endpoints for message exchanges.

Process Communication

• Definitions:
  • Client process: Initiates communication.
  • Server process: Waits for incoming requests.
• P2P architectures enable inter-host communication through message exchanges.

Sockets

• Sockets function as doorways for message transmission between processes.
• Sending process uses TCP buffers for message delivery.

Process Addressing

• Each process requires a unique identifier, combining an IP address and port number.
• Example Port Numbers:
  • HTTP: 80
  • Mail: 25

Transport Layer Functions

• Provides logical communication between application processes on different hosts.
• Encompasses various transport protocols, such as TCP and UDP.

Network Layer Functions

• Responsible for segment delivery from sending to receiving hosts.
• Encapsulates segments into datagrams for network transmission.
• Routers examine header fields of IP datagrams for proper routing.

Link Layer Responsibilities

• Transfers datagrams to physically adjacent nodes across wired, wireless, or LAN connections.
• Manages layer-2 packets (frames) for effective datagram transfer between nodes.

Test your knowledge on various network applications such as email, web services, and real-time video. This quiz also explores different application architectures including client-server and peer-to-peer systems. Dive into the world of ICT and discover how these technologies connect us.