Question

1. What is the difference between a host and an end system? List the types of end systems. Is a Web server an end System? 2.What advantage does a circuit-switched network have over a packet-switched network? 3. Which Layers in the Internet protocol stack does a router process? 4. What are the five layers in the Internet protocol stack? 5. What are the principal responsibilities of each of these layers?

Answer 1

1). Both are same ,but employed as exchangeablely. Yes , the web server is an end system.The types of end system are smartphones,mail servers and personal computers..etc.Host end system is generally a node over a network which contain the IP address.

2). Circuit - switched network able to assure the particular number of end-to-end bandwidth to period of call.

3). Physical(Router -which is a device which serves as flyover between computer and network ) , Data link(router posts frame for next node only when the router is recognized) and network layer(Router allocates address for segment received and generates a datagram).

4). 1. Application

2. Transport

3. Network

   4. Link

5. physical

5). Application layer have many protocols like FTP, SMTP and HTTP. It indicates the interface process that a user employed in interactions network.

Transport layer is liable for end-to-end interaction employed for conveying messages for host. Offers the facility of output having IP protocol.

Network layer is liable for moving the packets from one to another is called datagrams.

Link layer is moving packets from a node to other known as frames.

Physical layer elucidates the way of changing os and 1s as a signal.