CHAPTER 6 NETWORK COMMUNICATION

Chapter 6 Focus

• Main focus involves various aspects of networking, including data transmission, security, and system software.

Data Transmission Speed and Capacity

• Data transmission speed and capacity are primarily described by bandwidth, which indicates the maximum data transfer rate of a network.

Local Area Network (LAN)

• A network that includes connections within a limited area, such as an office building or university campus.

System Software

• Mainly focuses on managing hardware and providing a platform for applications to run.

Internet Technologies and Network Security

• A key aspect includes implementing encryption methods to protect data transmitted over the internet.

Impact of Increased Connectivity

• Increased productivity in business can be indicated by enhancements in collaboration and communication efficiency.

Multi-Cloud Policy Management

• Primary focus is on managing and optimizing the use of multiple cloud services effectively and ensuring compliance with policies.

Digital Transformation Goal

• Main goal is to leverage digital technologies to fundamentally change how businesses operate and deliver value to customers.

Internet of Things (IoT) Objective

• Principal objective is to connect various devices and systems to collect and exchange data, enabling smarter operations.

Data Security Factor

• Crucial factor for data security includes robust authentication mechanisms to ensure that only authorized users can access sensitive information.

DevOps Connection

• Primarily ties up to combining software development (Dev) and IT operations (Ops) to enhance collaboration and productivity.

Digital Transformation Replacement

• Aims to replace outdated business processes with digitally enabled systems and applications.

Firewall Role in Network Security

• Acts as a barrier between trusted internal networks and untrusted external networks, controlling incoming and outgoing traffic based on security rules.

Wi-Fi 6 Technology

• Main characteristic of Wi-Fi 6 is its ability to support more devices simultaneously and provide faster speeds with lower latency.

Proxy Server Function

• Primary function is to act as an intermediary between clients and servers, enhancing security and privacy by masking client IP addresses.

DNS Purpose in Networking

• Domain Name Service (DNS) translates domain names into IP addresses, allowing users to access websites using easy-to-remember names.

Intrusion Detection System (IDS) Role

• Monitors network traffic for suspicious activities and alerts administrators about potential security breaches.

Bus Topology

• A type of network topology that uses a common cable called a bus or backbone for connecting all devices in the network.

TCP/IP Definition

• Stands for Transmission Control Protocol/Internet Protocol, which is the suite of communication protocols used for connecting devices on the internet.

Router Function in a Network

• Primary function is to route data packets between different networks, directing traffic along the most efficient paths.

Network Architecture Requirement

• Requires each node to have multiple connections to other nodes, which is characteristic of mesh topology.

5G Technology Features

• Main characteristics include ultra-fast data speeds, reduced latency, and the ability to connect a massive number of devices simultaneously.

Network Administrator Responsibilities

• Primary responsibility includes maintaining network performance, security, and troubleshooting connectivity issues.

Peer-to-Peer (P2P) vs. Client/Server Networks

• P2P networks allow direct communication between nodes without a centralized server, while Client/Server networks depend on a dedicated server to manage resources.

Modem Function

• Primarily converts digital signals from a computer into analog signals for transmission over communication lines and vice versa.

Connectivity Role in Computer Networks

• Primary function is to enable devices to communicate and share resources effectively.

Faster Cable Type

• Fiber optic cable is known to be faster and more reliable than coaxial cable.

Wireless Communication Systems

• Most systems use radio waves to communicate in wireless connections.

Bluetooth Role

• Primary role is to connect devices wirelessly over short distances, enabling data transfer and communication.

Connection Services

• DSL is slower than cable modem but can be used almost anywhere due to its simplicity and reliance on existing telephone lines.

Leased Lines vs. OC Lines

• Leased lines combined to form T3 and DS3 provide dedicated high-speed data connections, offering greater bandwidth reliability compared to OC lines.

High-Reliability Cable

• Fiber optic cable is recognized for its speed and reliability over traditional coaxial cables.