Grade 12 slides on Network technologies.pptx

These are Grade 12 slides on Network technologies

1. Grade 12 Networks By Awelani Lidzebe

2. Internet as an example of a WAN Wide Area Networks (WANs) are communications systems that link several smaller local area networks (LANs) or other WANs over a sizable geographic region. WANs can connect devices across cities, countries, or even continents, in contrast to LANs, which are usually limited to a single location, such as a house, workplace, or college. Purpose of WAN Facilitating communication and data sharing between geographically scattered locations is the main goal of WANs. WANs allow enterprises to share resources, data, and applications regardless of physical location by establishing long-distance connections between LANs and other networks. Access to centralized resources, teamwork initiatives, and a variety of corporate processes are supported by this link.

3. Role Backbone of Connectivity: Wide Area Networks (WANs) provide the infrastructure required to connect distant offices, branches, data centre, and cloud services, acting as the centre of connectivity for major enterprises. Communication and resource sharing within the network are made possible by this connectedness . Data transmission: is made easier by WANs, which use a variety of transmission methods, including optical fibres , satellite links, microwave links, and copper cables, to send data over large distances. Even over large geographic distances, these technologies guarantee dependable and effective data delivery. Remote access: to centralized resources and services is made possible by WANs. No matter where they are physically located, employees can collaborate and be productive seamlessly by using the Wide Area Network (WAN) to securely access company databases, apps, and intranet services. Global Connectivity: Businesses can create global connectivity using WANs, linking offices, partners, and customers all over the world. This worldwide reach promotes cross-border cooperation, corporate growth, and market penetration, bolstering the expansion and efficiency of multinational enterprises.

4. WIDE AREA NETWORK One of the most well-known instances of a Wide Area Network (WAN) is the Internet, a global network of connected computers and devices that spans the globe. Through its global connectivity of billions of individuals, companies, and gadgets, it enables huge communication and data sharing .

5. File Transfer Protocol (FTP ) Uses/Purpose: FTP makes it easier for files to be transferred between computers connected to the Internet. Large file sharing and content management for websites are two common uses for it. Benefits: Supporting both bulk transfers and remote file management, FTP offers a simple, safe, and effective way to transmit information. Advantages: There are security hazards, especially if FTP connections aren't secured. Setting it up and configuring it could also call for technical know-how. Restrictions: Its capacity to effectively manage many transfers at once is limited. Examples: FileZilla, WinSCP , and Cyberduck

6. Instant Messaging Applications/Purposes: Instant messaging enables text-based communication between users online in real-time. It facilitates rapid and easy message exchanges and is frequently used for both personal and professional communication. Benefits: Immediate communication, teamwork, and the sharing of multimedia files and photographs are all made possible via instant messaging. Disadvantages: The possibility of unwanted access or communication interception may give rise to security and privacy issues. Constant notifications can also cause distractions. Limitations: Requires a live Internet connection and has potential size or message length restrictions for certain services. Examples include Slack, Facebook Messenger, and WhatsApp.

7. Voice over Internet Protocol (VoIP) Usage/Purpose: Voice over Internet Protocol (VoIP) facilitates voice communication by utilizing digital signals in place of traditional phone lines to place calls. Benefits of VoIP : include cost savings and capabilities like call forwarding and video conferencing, especially for long-distance and international calls. Disadvantages: Depending on the bandwidth and reliability of the Internet connection, quality of service may differ. It can be difficult to pinpoint the caller's location when making an emergency call. Limitations : Issues with network outages or congestion can impact reliability. Examples include Google Meet, Zoom, and Skype.

8. File Sharing Uses/Purpose: By facilitating file sharing across the Internet, file sharing services help users collaborate and distribute content. Benefits: File sharing facilitates version control, makes shared files easier to access, and makes collaboration easier . Disadvantages: If users distribute copyrighted content without authorization, copyright infringement and piracy issues could surface. Unauthorized access and files contaminated with malware are security threats. Restrictions: A few file-sharing services include limits on the amount of storage space, bandwidth, and file size. Examples: Dropbox , Google Drive, and WeTransfer

9. Concept of Grid Computing and Cloud Computing Grid Computing: Grid computing is the method of solving complicated computer problems by coordinating the usage of dispersed resources at several different sites. It connects and uses the Internet to access the processing power of computers that are networked. Cloud Computing: Cloud computing is the pay-as-you-go delivery of computer services via the Internet. It includes several services that may be accessed remotely from any location with an Internet connection, such as software, processing, and storage.