Network Topologies
What type of network topology uses a single central cable to connect all devices, and what is one of its major disadvantages?
Bus topology, and its major disadvantage is that if the central cable fails, the entire network goes dow
What is the primary protocol used for sending emails over the internet?
What is SMTP (Simple Mail Transfer Protocol)?
What are the implications of using a tree topology in terms of scalability and management, and what is a potential downside?
A tree topology allows for easy scalability by adding more nodes at various levels without disrupting the existing structure, but a potential downside is that if the root node fails, all connected nodes can lose communication.
Which protocol is responsible for translating domain names into IP addresses, making it easier for users to access websites?
DNS
What topology involves arranging nodes in a circular configuration, and how does it differ from a star topology in terms of data transmission?
In a ring topology, data travels in one direction around the circle, whereas in a star topology, data is sent to a central hub before reaching its destination.
What protocol is used for securely transmitting data over the internet, often indicated by "https://" in a URL?
What is SSL/TLS (Secure Sockets Layer / Transport Layer Security)?
Describe a hybrid topology and give an example of where it might be effectively used in a real-world scenario.
A hybrid topology combines two or more different topologies (e.g., star-bus) to take advantage of their benefits. An example is a large corporate network where departments might use star topologies connected to a bus backbone for interdepartmental communication.
Which protocol suite is the foundation of internet communication, defining standards for data transmission across networks, and what are the two main transport layer protocols within this suite?
The two main transport layer protocols are TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). TCP ensures reliable data transmission with error-checking and flow control, while UDP is faster but does not guarantee delivery or reliability.
In which network topology are all devices connected to a single central hub, and what is one key disadvantage of this configuration?
star topology
What is the purpose of the ICMP protocol, and how does it assist in network diagnostics?
CMP assists in network diagnostics through tools like:
Ping: Sends ICMP echo request messages to test connectivity between devices. If the destination is reachable, it responds with an echo reply, helping users verify whether a device is online or experiencing issues.
Traceroute: Uses ICMP messages to trace the path packets take to a destination by recording the routers (hops) along the way. This helps identify bottlenecks or failures within the network.