Podcast
Questions and Answers
What is the main difference between a Local Area Network (LAN) and a Wide Area Network (WAN)?
What is the main difference between a Local Area Network (LAN) and a Wide Area Network (WAN)?
- WAN is limited to a single site while LAN can cover a large geographical area (correct)
- LAN covers a larger geographical area than WAN
- LAN is spread over a large geographical area while WAN is spread over a small geographical area
- WAN covers a smaller geographical area than LAN
What does the physical topology of a network refer to?
What does the physical topology of a network refer to?
- The layout which shows how data flows
- The physical layout of the wires and components which form the network (correct)
- The method used to transmit data between computers
- The security measures in place to protect the network
Which protocol is responsible for translating domain names to IP addresses?
Which protocol is responsible for translating domain names to IP addresses?
- FTP
- TCP
- DNS (correct)
- HTTP
What does the logical topology of a network describe?
What does the logical topology of a network describe?
Which type of network is commonly found in schools and small businesses?
Which type of network is commonly found in schools and small businesses?
What is the purpose of a firewall in network security?
What is the purpose of a firewall in network security?
What is a disadvantage of bus topology?
What is a disadvantage of bus topology?
Which network topology is most commonly found with wireless technology such as Wi-Fi?
Which network topology is most commonly found with wireless technology such as Wi-Fi?
What is an advantage of star topology?
What is an advantage of star topology?
What makes maintaining the network difficult in mesh topology?
What makes maintaining the network difficult in mesh topology?
Which protocol is used for web page rendering?
Which protocol is used for web page rendering?
What is the TCP/IP stack of networking protocols used for during communication?
What is the TCP/IP stack of networking protocols used for during communication?
What does a protocol define?
What does a protocol define?
What is the Internet structure that allows computers on opposite sides of the globe to communicate with each other?
What is the Internet structure that allows computers on opposite sides of the globe to communicate with each other?
What happens if the central switch fails in star topology?
What happens if the central switch fails in star topology?
What is the main disadvantage of mesh topology if using a wired network?
What is the main disadvantage of mesh topology if using a wired network?
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Study Notes
Network Fundamentals
- The main difference between a Local Area Network (LAN) and a Wide Area Network (WAN) is the geographical area it covers, with LAN connecting devices in a limited geographical area and WAN covering a larger geographical area.
- The physical topology of a network refers to the physical layout of devices and connections.
Protocols and Addressing
- The protocol responsible for translating domain names to IP addresses is DNS (Domain Name System).
- DNS is used to resolve human-readable domain names to IP addresses.
Network Types
- A Local Area Network (LAN) is commonly found in schools and small businesses.
- LAN connects devices in a limited geographical area.
Network Security
- The purpose of a firewall in network security is to block or allow incoming and outgoing network traffic based on predetermined security rules.
Network Topologies
- A disadvantage of bus topology is that if the backbone cable fails, the entire network fails.
- Star topology is commonly found in wireless technology such as Wi-Fi.
- An advantage of star topology is that if one device fails, others remain unaffected.
- In mesh topology, each device is connected to every other device, making it difficult to maintain the network.
- If the central switch fails in star topology, the entire network fails.
- A disadvantage of mesh topology in a wired network is that it requires a large number of cables.
Internet and Communication
- The TCP/IP stack of networking protocols is used for communication between devices on the internet.
- A protocol defines the rules and structure of data exchanged between devices.
- The internet structure that allows computers on opposite sides of the globe to communicate with each other is TCP/IP.
- HTTP (Hypertext Transfer Protocol) is used for web page rendering.
Network Troubleshooting
- In mesh topology, maintaining the network is difficult due to the complexity of multiple connections.
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