Urmila Samariya has Published 145 Answers

Internet Control Message Protocol (ICMP)

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 12:03:47

Internet Control Message Protocol (ICMP) works in the network layer of the OSI model and the internet layer of the TCP/IP model. It is used to send control messages to network devices and hosts. Routers and other network devices monitor the operation of the network. When an error occurs, these ... Read More

Types of Firewalls in Computer Networks

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 12:01:36

A firewall is a network security device; it is a protective layer for the server that monitors and filters all the incoming and outgoing network traffic. It uses a set of rules to determine whether to allow or block a specific network traffic. Firewalls can prevent unauthorized use before reaching ... Read More

Circuit Switching in Computer Networks

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:59:07

Circuit Switching is a connection-oriented service that uses a dedicated path from the sender to the receiver. Before sending any data from the source to the destination, it needs to set up an end-to-end path.Circuit switching has the minimum chance of data loss due to the dedicated circuit path, but ... Read More

Internet Protocol version 6 (IPv6) Header

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:57:52

Internet protocol version 6 (IPv6) headers is the next generation of the internet protocol designed to replace the current version, or Internet Protocol Version 4 (IPv4). IPv6 fixes many problems in IPv4, such as the limited number of available IPv4 addresses.IPv6 uses 128-bit addresses; an address space is large enough ... Read More

Computer Networks – Layers of OSI Model

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:52:07

The OSI (Open Systems Interconnection) model is developed by the International Standard Organization. It is a layered framework for the design of network systems that allows communication between all types of computer systems. Its primary purpose is to provide a set of structural guidelines for exchanging information between computers, workstations, ... Read More

Sliding Window Protocol (Selective Repeat)

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:49:38

The sliding window protocol is a flow control protocol that allows both link nodes A and B to send and receive data and acknowledgments simultaneously.Here, the sender can send multiple frames without having to wait for acknowledgments.If no new data frames are ready for transmission in a specified time, a ... Read More

File Transfer Protocol (FTP) in Application Layer

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:47:39

File Transfer Protocol (FTP) is an application layer protocol that is used to transfer the files between the local devices (PC, smartphone, etc.) to a server. It transfers both text and binary files over the Internet.FTP opens two connections between the computers − one for the commands and replies (control ... Read More

User Datagram Protocol (UDP) in Computer Networks

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:45:48

User datagram protocol (UDP) is a transport layer protocol. It is a connectionless, unreliable protocol that has no flow-and-error control. UDP uses port numbers to multiply data from the application layer. UDP is a simple protocol, it has less overhead. Suppose a process wants to send a small message, then ... Read More

Computer Networks – An Overview of TCP/IP Model

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:42:01

Transmission Control Protocol/Internet Protocol (TCP/IP) model is a concise version of the OSI Model. The TCP/IP protocol suite was developed before the OSI model. But the layers in the TCP/IP protocol suite do not exactly match those in the OSI model.TCP/IP ProtocolThe original TCP/IP protocol uses four layers − host-to-network, ... Read More

Distance Vector Routing (DVR) Protocol

Urmila Samariya

Urmila Samariya

Updated on 23-Nov-2021 11:39:07

In distance-vector routing (DVR), each router is required to inform the topology changes to its neighboring routers periodically. Historically it is known as the old ARPNET routing algorithm or Bellman-Ford algorithm.How the DVR Protocol WorksIn DVR, each router maintains a routing table. It contains only one entry for each router. ... Read More

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