ICT Department - Network Applications Quiz

Questions and Answers

Is an IP address sufficient for identifying a process on a host?

No, processes share IP addresses but use different ports.

Yes, each IP address corresponds to a unique process.

No, many processes can be running on the same host. (correct)

Yes, each process listens to its own IP address.

What role does the transport layer play in data communication?

It ensures logical communication between application processes on different hosts. (correct)

It encapsulates application data into network layers without processing.

It sends application messages without segmentation.

It provides physical communication between devices.

How does the sending side of the transport protocol handle application messages?

It encrypts messages for security.

It breaks messages into segments and passes them to the network layer. (correct)

It combines all messages into a single segment.

It directly sends messages without any processing.

What does the network layer do with transport segments?

<p>It encapsulates segments into datagrams for delivery.</p> Signup and view all the answers

What is the responsibility of the data link layer?

<p>It transfers datagrams from one node to a physically adjacent node over a link.</p> Signup and view all the answers

Study Notes

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.

Description

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.