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Application Layer
The application layer enables the user whether human or software to access the network. It provides user interfaces and support for services such as electronic mail, fire access and transfer access to systems resources surfing the world wide web and network management. In this part we briefly discuss some applications that are designed as a client server pair in the internet. the client sends a request for a service to the server the server responds to the client.
In this chapter we will briefly the key application layer concepts including application layer protocol clients and servers. Processes sockets and transport layer interface and full explanation of several network applications in detail including the web e mail DNS ( Domain Name Server) and P2P ( point to point) file sharing.
What are the key functions of data link layer? Data link layer transfers data in a structured and reliable manner so that the service given by the physical layer is utilized by
Q. What is data link of osi model? - The data link layer offers access to the networking media and physical transmission across the media and this enables the data to locate it
The three phase of PPP session establishment are:- A. Link establishment phase B. Authentication phase C. Network layer protocol phase
Q. Show the Congestion control in TCP? Congestion control in TCP TCP assumes that the cause of lost segment is due to congestion in the network Retransmission of
PHYSICAL ADDRESSING IN A WAN: The physical addressing in a WAN is same as in LAN in the following way: The data is send in packets equivalent to frames. Every pack
What is Framing? Framing in the data link layer divides a message from one source to a destination, or from other messages to other destinations, by adding a sender address and
Encryption/decryption using by SSL Once a session is established, the SSL generates a session key using public-key encryption to exchange information between the client and ser
What is the difference between CSMA/CD and CSMA/CA? CSMA/CD, or Collision Detect, retransmits data frames when a collision occurred. CSMA/CA, or Collision Avoidance, will first
How can you manage a network using a router? Routers have built in console that lets you configure dissimilar settings, like security and data logging. You can allocate restric
A subnet is the part of an IP network.
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