Podcast
Questions and Answers
What is the primary characteristic that distinguishes a LAN from a WAN?
What is the primary characteristic that distinguishes a LAN from a WAN?
- WANs use only wired connections.
- LANs typically cover a small geographical area. (correct)
- LANs are owned by telecommunication companies.
- WANs require more hardware than LANs.
Which of the following best describes the ownership of hardware in a LAN?
Which of the following best describes the ownership of hardware in a LAN?
- Hardware ownership is shared among users.
- All hardware is owned by the telecommunication company.
- Hardware is leased on a monthly basis.
- All hardware is owned by the organization using it. (correct)
What type of connection do WANs primarily utilize?
What type of connection do WANs primarily utilize?
- Only wired Ethernet connections.
- Only fibre optic cables.
- Only satellite links.
- Telephone lines and satellite links. (correct)
What role does a switch play in a LAN?
What role does a switch play in a LAN?
What is a key advantage of using networks?
What is a key advantage of using networks?
In terms of network connection modes, which of the following is NOT a form of wireless connection?
In terms of network connection modes, which of the following is NOT a form of wireless connection?
Which protocol is primarily used for transferring files over the web?
Which protocol is primarily used for transferring files over the web?
What does DNS stand for and what is its function?
What does DNS stand for and what is its function?
What is the function of a Domain Name Service (DNS)?
What is the function of a Domain Name Service (DNS)?
Which of the following describes a DNS resolver?
Which of the following describes a DNS resolver?
How is a URL structured based on its levels?
How is a URL structured based on its levels?
Which of the following is NOT an advantage of cloud storage?
Which of the following is NOT an advantage of cloud storage?
What is the primary concern associated with wireless connections?
What is the primary concern associated with wireless connections?
Which statement about the internet is TRUE?
Which statement about the internet is TRUE?
What does a web server typically do?
What does a web server typically do?
What is the role of an Internet Service Provider (ISP)?
What is the role of an Internet Service Provider (ISP)?
What is the first step in the DNS lookup process initiated by a client browser?
What is the first step in the DNS lookup process initiated by a client browser?
Which of the following holds the records for all .com domains?
Which of the following holds the records for all .com domains?
What type of server responds with the actual IP address of the domain google.com?
What type of server responds with the actual IP address of the domain google.com?
What is an advantage of using cloud services for hosting?
What is an advantage of using cloud services for hosting?
During the DNS query process, what does the resolver return to the web browser?
During the DNS query process, what does the resolver return to the web browser?
Which server plays a part in sending back the address of the TLD server during the DNS resolution process?
Which server plays a part in sending back the address of the TLD server during the DNS resolution process?
What does the DNS system primarily map?
What does the DNS system primarily map?
What is a similarity between a web server and a cloud service?
What is a similarity between a web server and a cloud service?
What is a significant disadvantage of operating a web server?
What is a significant disadvantage of operating a web server?
In a star network topology, what happens if the central switch fails?
In a star network topology, what happens if the central switch fails?
What is one major advantage of a full mesh network topology?
What is one major advantage of a full mesh network topology?
Which of the following is a disadvantage of a full mesh network topology?
Which of the following is a disadvantage of a full mesh network topology?
What is a primary consideration when using bandwidth for clients in a web server environment?
What is a primary consideration when using bandwidth for clients in a web server environment?
Which of the following is NOT true about file servers?
Which of the following is NOT true about file servers?
When comparing star and full mesh network topologies, what can be inferred about their design?
When comparing star and full mesh network topologies, what can be inferred about their design?
Which factor negatively affects client experience when using a web server?
Which factor negatively affects client experience when using a web server?
What is the primary function of a MAC address?
What is the primary function of a MAC address?
Why was IPv6 introduced?
Why was IPv6 introduced?
Which protocol is used for securely transferring HTML files between a client and server?
Which protocol is used for securely transferring HTML files between a client and server?
What does the acronym SMTP stand for in networking protocols?
What does the acronym SMTP stand for in networking protocols?
Which of the following statements best describes the role of standards in networking?
Which of the following statements best describes the role of standards in networking?
Which protocol would you use to retrieve email from a mail server?
Which protocol would you use to retrieve email from a mail server?
Which protocol is specifically designed for uploading web pages to a server?
Which protocol is specifically designed for uploading web pages to a server?
What is the main difference between POP and IMAP protocols?
What is the main difference between POP and IMAP protocols?
Study Notes
Types of Networks
- Local Area Network (LAN) covers a small geographical area with all hardware owned by the organization using it. Usually wired with fiber optic and wireless using wifi. Computers in LAN are connected with a switch.
- Wide Area Network (WAN) covers a large geographical area and infrastructure between LANs is leased from telecommunication companies who own and manage it. Connected with telephone lines or satellite links.
Advantages and Disadvantages of Networks
- Advantages include sharing files, peripherals like printers, and connections to other networks. Users can access their files from any computer on the network. Devices can connect to wired/wireless networks.
- Disadvantages include security concerns, especially with wireless connections.
The Internet
- A collection of interconnected networks spanning across the world.
- Domain Name Service (DNS) translates a domain name into an internet address.
- Each website has a network address, like "8.8.8.8", which is difficult for users to remember, so websites use domain names like bbc.co.uk.
- Hosting is the storing of files and data on a web server.
- The web server is referred to as the host.
- The Cloud is a network of servers that offer on-demand access to computing resources, including storage, applications, and services.
- Data and programs can be accessed and used over the internet.
- Advantages: Access anytime, anywhere, from any device, large storage capacity, automatic backup, and easy online collaboration.
- Disadvantages: Ongoing monthly costs, bandwidth dependence on network speed, reliance on stable internet connection, less control over data.
- Data and programs can be accessed and used over the internet.
Web Servers, Clients, and the Cloud
- Web servers are responsible for hosting websites, dealing with client requests, and sending web pages to browsers.
- Clients are devices that request and receive information from web servers.
- The cloud offers services, including storage, as well as access to applications and services.
- The relationship between servers and clients is that a client will request a page and the server will send it to the client's web browser.
Domain Name Service
- DNS servers translate domain names into IP addresses.
- When a client requests a website, the DNS server determines the server's IP address and then sends the information back to the client's browser.
Star Network Topology
- A star network topology consists of a central switch that all computers connect to.
- If the switch fails, the whole network fails as no node can communicate.
Full Mesh Network Topology
- A full mesh network topology features a direct connection between every computer in the network.
- Advantage: If a connection fails, traffic can be routed through another path.
- Disadvantage: Requires a lot of cabling and switch hardware, potentially increasing costs for large networks.
IP and MAC Addressing
- IP Address is used to identify a host computer or node which communicates over the internet or IP.
- MAC Address is used to route frames on a LAN.
- IPv6 is a new version of IP addressing introduced because of increasing Internet of Things (IoT) devices which exceeded available IPv4 addresses.
Standards and Protocols
- Standards provide benchmarks for the quality and performance of networking components and systems.
- Protocols are sets of rules governing communication between devices on a network.
- HTTP (Hypertext Transfer Protocol): Client-server method for requesting and delivering HTML files.
- HTTPS (Hypertext Transfer Protocol Secure): Encrypts and authenticates client-server data.
- SMTP (Simple Mail Transfer Protocol): Sends mail to a mail server.
- FTP (File Transfer Protocol): Sends files between computers and is used for uploading web pages to a web server.
- POP (Post Office Protocol): Used by email clients to retrieve emails from a mail server.
- IMAP (Internet Message Access Protocol): Used by email clients to retrieve and manage remote mailboxes. IMAP is more advanced and offers more features than POP.
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Description
Test your knowledge on different types of networks, including Local Area Networks (LAN) and Wide Area Networks (WAN). Explore the advantages and disadvantages of networking, as well as the role of the Internet and DNS in connecting devices. This quiz will help solidify your understanding of network concepts.
