Question

Q1: TRUE or FALSE and correct the FALSE question:

1. Google web server uses one single socket to provide service to all its clients.

2. WireShark can be used to discover all the routers IP addresses along the path from one source to the destination.

3. A web cache can always satisfy client requests directly.

4. HTTP request and response messages always have the same format.

5. P2P is a client/server model.

6. Packet sniffing is a technology to send messages with a fake IP address.

7. Packet switching is dedicated, while circuit switching is not.

8. Encapsulation is the procedure to add all the packet headers to the packet payload at application layer when the data leaves the application program.

9. DNS service runs on routers.

Answer 1

1. FALSE, there are thousands of web sockets used for serving billions of request on googe servers.

2. TRUE

3.FALSE, not always, unless that request has been seen earlier, a WEB CACHCE can improve request serving time.

4.TRUE

5.FALSE, P2P is a DECENTALISED / DISTRIBUTED method, torrent is an example

6. FALSE , Packet sniffing is the practice of gathering, collecting, and logging some or all packets that pass through a computer network, regardless of how the packet was addressed.

7.FALSE, Circuit Switching is dedicated, while Packet switching is not.

8. TRUE.

9 FALSE, DNS can run on servers, ISPs, or routers.