10-Networking

• Computing
• Upper Secondary (Key Stage 4)
• GCSE

Networking 1.3.1

DNS

Hosting

The Cloud

Web servers and clients

The Cloud

Key Objective: To understand some key language and concepts of networking.

All: Know the key concepts of DNS, hosting, the cloud, web servers and clients.

Most: Recognize the roles and interactions of these components in accessing websites and web-based services.

Some: Analyze the implications of these technologies on privacy, security, and accessibility.

On premises

Cloud

Scalability

Accessibility

Quick setup

Automatically updated

Hardware control

Disaster recovery

Physical security

Pay for what you need

Predictable cost

Network latency

The Cloud

Remote service provision:

Virtual machine

Storage

Software

Domain name

Example: 

lessonup.com

Used by humans

IP address

Example: 2400:cb00:2048:1::c629:d7a2 (in IPv6)

Used by Web browsers

DNS is like a phonebook

DNS is the process of converting the domain name you enter into your browser, into an ip address your browser can read using 4 DNS servers.

Silent and Solo

Domain Name System (DNS)

Research:

What are the four DNS servers involved in loading a webpage?

Why is DNS important for Internet communication?

Pair up

Domain Name System (DNS)

Discuss:

What are the four DNS servers involved in loading a webpage?

Why is DNS important for Internet communication?

What are the four DNS servers involved in loading a webpage?

Why is DNS important for internet communication?

DNS Servers

DNS recursor

Root nameserver

TLD nameserver

Authoritative nameserver

Hosting

Web hosting

Web server

 Web page files (HTML, CSS, JavaScript).

Supports dynamic content generation, server-side scripting, databases, and interactive web applications.

File hosting

File server

File storage/retrieval Documents, images, videos apps, etc.

Focuses on storing and sharing static files without the ability to dynamically generate content.

Which of these phrases connect to cloud computing?

1. Control of hardware components
2. Limited scope to upgrade
3. On-demand scalability
4. High upfront cost

What is the primary function of web hosting?

1. Securing website domains
2. Translating domain names into IP addresses
3. Storing and serving website content to visitors
4. Optimising website performance for search engines

What is the primary function of DNS servers?

1. Securing website domains
2. Translating domain names into IP addresses
3. Storing and serving website content to visitors
4. Optimising website performance for search engines

Which answer is true about a client within the client - server relationship?

1. Requests and consumes services from servers
2. Hosts websites and web-based applications
3. Provides computing resources over the internet
4. Manages the routing of internet traffic