What is DNS – Domain Name System ?
DNS is naming database in which internet domain names are located and translated into Internet Protocol (IP) addresses. Process of a DNS resolution : When
DNS is naming database in which internet domain names are located and translated into Internet Protocol (IP) addresses. Process of a DNS resolution : When
‘Crypto’ means secret or hidden. Cryptography is the science of secret writing with the intention of keeping the data secret. Types : 1. Symmetric Cryptography
Transmission Delay : Time taken to put a packet onto link Propagation Delay : first bit to travel Queuing Delay : Time taken for job
Feature TCP UDP Connection status Requires an established connection to transmit data (connection should be closed once transmission is complete) Connectionless protocol with no requirements
it is connectionless and an unreliable protocol for communications that helps in between the different devices over a network. So, there is no need to
It is a connection-oriented protocol for communications that helps in between the different devices over a network. It lies between the Application and Network Layers.
Segment : – Actual Data part + With Checksum– Segment is part of file which is send from from session layer– if file is in
TCP/IP Model : Layer Layer Namer Process 1 Access Layer(Physical + Data Link Layer) It looks out for hardware addressing and the protocols present in
OSI(Open Systems Interconnection) MODEL : is a reference model for how apps communicate over a N/W. Layer Layer Namer Data Type Devices used Process 7
In the world of technology, communicating worldwide will not be possible if there were no fixed ‘standards’ that will govern the way users communicate for