Unit 3 - Continuation... Flashcards
What is the client-server network?
. A client makes requests to the server for data and connections.
. A server controls access and security to one shared file store.
. A server manages access to the internet, shared printers and email services, as well as running data backups.
What is a file server?
A file server holds all the files and all the data bases and manages backups.
What is a print server?
A print server may organise printing on different printers.
What is an email server?
An email server may receive emails, detect and block spam, distribute emails to users.
What is a web server?
A web server may host the school’s external website.
What is a database server?
A database server may hold students’ records.
What is the role of the client?
The client sends requests to the server. It then waits and receives the reply.
What is the role of the server?
The server waits for requests from the client. It performs any processing required to fulfil the request. It sends back the requested data back to the client.
What are the advantages of a client server?
. With file servers, just one file server needs to be back up and files can be accessed from any computer.
. Email servers provide a central place for email that is then accessed from different devices.
. One print server can manage all files to be printed. This allows one printer to be shared by many computers.
What is a peer-to-peer network?
All computers are equal and serve their own files to each other.
Each computer is responsible for its own security and backups and usually has its own printer.
. Usually for smaller companies with fewer computers.
. Can communicate without server.
What are the advantages of a peer-to-peer network?
. Easier to set up - computers can simply be cabled together.
. No need for dedicated server equipment.
. Individual computers can share a printer, router etc..
. Users can communicate directly with each other and share each other’s files.
What are the disadvantages of a peer-to-peer network?
. Viruses and Malware can be easily transferred.
. Data recovery and backup is not done centrally so has to be done individually on each computer.
. Files not centrally organised so can be difficult to find the file you want if not organised.
. If a computer is switched off, data from that machine can not be transferred to other machines.
What is web hosting?
Web hosting is a service offered by companies that will host web pages and files for websites.
They would often provide database servers.
What are the advantages of using a web host?
.Web hosts have far more bandwidth, so they can serve more users
. Web hosts are able to monitor their equipment 24 hours a day.
. Web hosts will backup sites remotely.
What is the cloud?
Remote servers that store data to be accessed over the internet. Access anytime, anywhere from any device.
Automatic backups.
Collaborate on files easily.
e.g. Google drive, OneDrive, Dropbox, iCloud, etc
