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The transport Layer
Communication between computers is handled by the transport layer which is comprised of transmission control protocol (TCP) and the users datagram protocol ( UTP). This layer divides the data into logical units called packets before transmitting them. TCP offers a reliable transport of data whereas UDP does not. TCP is a connection oriented protocol that ensure that data is transmitted properly t the destination. If there is an error in data transmission. TCP takes the responsibility of transmitting data again to the destination. However UDP being connectionless it does not ensure the data packets have reached the destination properly. However both TCP and UDP seek the help of IP so route the information to the appropriate destination.
Define the term Socks- Network security As it is well known, each type of network security protects data at a different layer of the OSI model. Built-in at each layer lies the
Q. Applications of networks? End systems (hosts): - Run application programs - Example email, Web - At -edge of network Client/server model - Client host
What are the advantages of bus topology? The benefit of physical bus topology is: a. It uses established standards and it is relatively simple to install. b. It needs les
Question: a) Differentiate between the following key terms used in any e-banking security system: (i) Authorisation v/s Authentication. (ii) Data Integrity v/s Data Conf
Question 1: a. Differentiate between the several types of switching networks together with illustration. b. With the help of a diagram explain the two modes of operation un
Session layer examples are Netbios Names, SQL, NFS, X Windows, and RPC
Session layer protocols consists of NFS, SQL, RPC, Appletalk Session Protocol (ASP), XWindows, and NetBEUI.
Q. Show the Flow characteristics? Flow characteristics Reliability - if lacking means that packets or ACKs are lost - more important with FTP, SMTP than with audio
Enumerate about the Virtual Private Network (VPN) Even though, many firewalls also include the features of the virtual private network, the functionality and capabilities of V
Hold-Down Timers - Routers ignore network update information for a number of periods.
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