4.9.2.2 Types of networking between hosts Quiz: AQA Computer Science, Unit 9

The 20 questions

1. In a peer-to-peer network, what is the status of each computer?

   • Each computer has equal status and can share its resources directly with the others
   • Each computer is a server that holds the only copy of the shared files
   • Each computer is a client that must request every service from one central server
   • Computers are ranked in a hierarchy, with the administrator's machine as the main server

2. In a client-server network, what is the main role of a client?

   • To request services from one or more servers
   • To store the only copies of all the files for the whole organisation
   • To provide all of the services to the other computers on the network
   • To act as the central router between the network and the Internet

3. Which of these is an example of a service that a server might provide?

   • A monitor used by one office worker at a desk
   • A file server or an email server
   • A printer cable connected directly to a laptop without any network
   • A keyboard connected to a single workstation in an office

4. Which situation suits a peer-to-peer network best?

   • A school that needs a central server for student logins, shared storage and email accounts for all of its pupils
   • A small home or office where a few computers share files and a printer without a dedicated server
   • A company that needs every file backed up nightly to one controlled location, with access logged for auditing
   • A bank with thousands of staff that needs centrally managed customer records, security controls and regular backups

5. Which situation suits a client-server network best?

   • A single laptop connected to a printer with no other devices on the network
   • A two-computer household that wants to share one printer informally
   • A business with many staff that needs central file storage, shared email and managed backups
   • Two friends sharing files informally over a direct cable with no shared services

6. What is a key advantage of client-server networks?

   • Every computer has equal status, so no administration is ever needed on the network
   • Computers never need to be configured individually for use on the network
   • Central management, such as backups and security, can be applied to the servers
   • No central resource can ever be a single point of failure in the network

7. What is a key disadvantage of peer-to-peer networks?

   • Files and resources are spread across many machines, so backup and security are harder to manage centrally
   • Only one computer can share its files at any one time on the network, so sharing queues behind a single machine
   • Each computer must act as a server all the time, which means every machine needs expensive hardware to cope with requests
   • Clients cannot request any services from their peers on the network at all, so each machine works entirely alone

8. A school has one file server and 200 student devices that connect to it. What term describes the file server in this arrangement?

   • Client
   • Router
   • Peer
   • Server

9. Which statement about a server in a client-server network is correct?

   • It sends requests to every client at regular intervals to check its status
   • It responds to requests from clients by replying with the requested service or data
   • It is always a shared laptop that office staff use informally for their own files
   • It can serve only one client at any one time, so requests queue up on the network

10. Which type of network has no dedicated server?

    • A wireless network with a router
    • A client-server network
    • A peer-to-peer network
    • A network using a central switch in a star topology

11. Four computers share files equally with each other, with no dedicated server. Which network type is this?

    • Peer-to-peer
    • Thin-client, because all the data is held in a central location
    • Client-server, because files are shared between the computers
    • Wireless, because the computers share their files over the air

12. Why might an organisation move from peer-to-peer to client-server as it grows?

    • Central services are easier to secure, back up and manage as the number of users increases
    • Peer-to-peer networks require all data to be stored in one single location for all users
    • Peer-to-peer networks cannot share any files once more than four computers are connected
    • Client-server networks remove the need for any network cabling at all in the building

13. What is a web server's role in the Internet?

    • It serves web pages to browsers in response to their requests
    • It replies to every email before it is sent on by the mail system
    • It stores each user's browser cache so that pages load without any request
    • It converts analogue video from a camera into a digital form for storage

14. A file server handles 120 requests per second. Each client sends 6 requests per minute. At this average rate, how many clients can the server serve?

    • 720
    • 1200
    • 120
    • 12000

15. Why may a peer-to-peer network be less secure than a client-server network?

    • Client-server networks never use passwords, so they are easier for attackers to reach
    • Peer-to-peer networks use fewer cables, so attackers can reach them only through the router
    • Peer-to-peer networks have no devices that could be infected by malware of any kind
    • Security settings and backups are spread across many machines that may be managed inconsistently

16. In the client-server model, what is a client's usual request, and what is the server's usual response?

    • The client sends a request message, and the server replies with a response message
    • The server sends a request message, and the client replies with the data it holds
    • Both sides send requests at the same time, and neither ever sends a response
    • The client sends the data first, and the server returns a password in reply

17. Which network structure gives the best scalability for a large organisation?

    • Peer-to-peer, because each computer can hold all of the organisation's data itself
    • Client-server, with dedicated servers that can be added or upgraded as demand grows
    • Peer-to-peer, where each new computer must be connected directly to every other computer
    • Client-server, with a single server that is never upgraded however many users join

18. What does equal status mean in a peer-to-peer network?

    • Each computer can both request and provide services on the network
    • Each computer is restricted to requesting services and may never provide any
    • Each computer has the same processor speed and memory as all the others on the network
    • Each computer must be connected to the same switch in the star topology

19. A file server fails in a client-server network. What is the immediate effect on the clients?

    • The clients continue to access the files directly from one another without any problem
    • The clients become servers automatically and keep working as normal for everyone
    • The clients can no longer access the files that the server provides
    • Nothing happens, because each client stores its own copy of every file on the network

20. A small team of three designers shares files occasionally. Which arrangement is most suitable?

    • Client-server with a central email server and nightly backups for the team
    • Client-server with a dedicated file server and an administrator to manage it
    • Peer-to-peer, since the team is small and file sharing is occasional
    • Thin-client with a central server holding every design file for all three designers

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