1.2.2 - Describe the roles that a computer can take in a networked world. Flashcards
What roles can a computer take in a networked world?
Depending on the software installed, a computer can take on roles such as client, server, email server, DNS server, router, and firewall.
What is a client-server network architecture?
Client-server architecture is common in LANs and WANs where a server provides data to other computers. Servers have specific software for tasks like web, mail, and file serving.
What are the characteristics of servers in a client-server network?
Servers have a one-to-many relationship with clients, can accept or reject connection requests, and maintain connections using specific protocols. The hardware is less important than the server software.
What is a peer-to-peer network?
A peer-to-peer network allows computers to connect and share resources without a centralized server.
What is a router and its function?
A router is a hardware device that routes data from a LAN to another network, sending data packets to the correct host, subnet, or network.
What is a DNS server?
A DNS (Domain Name Server) links URLs (domain names) to IP addresses (web addresses).
What is a firewall in computing?
A firewall acts as a barrier between a trusted system or network and outside connections like the Internet, filtering data to protect the system. It can be hardware or software.
