What is protocol explain?

protocol, in computer science, a set of rules or procedures for transmitting data between electronic devices, such as computers. In order for computers to exchange information, there must be a preexisting agreement as to how the information will be structured and how each side will send and receive it.

What is network protocol with example?

Examples of standard network protocols are TCP (Transmission Control Protocol), UDP (User Datagram Protocol), IP (Internet Protocol), ARP (Address Resolution Protocol), HTTP (Hypertext Transfer Protocol), FTP (File Transfer Protocol), TFTP (Trivial File Transfer Protocol), SMTP (Simple Mail Transfer Protocol), SSH ( …

How many network protocols are there?

Generally speaking, there are three types of protocols in networking — communication, such as Ethernet; management, such as Simple Mail Transfer Protocol (SMTP); and security, such as Secure Shell, or SSH.

What is protocol in networking?

A network protocol is an established set of rules that determine how data is transmitted between different devices in the same network. Essentially, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structure or design.

What are the 7 protocols?

Common Management Information Protocol (CMIP) On TCP/IP stack:
  • Hypertext Transfer Protocol (HTTP)
  • File Transfer Protocol (FTP)
  • Simple Mail Transfer Protocol (SMTP)
  • Simple Network Management Protocol (SNMP)

Is HTML a protocol?

It is an application protocol for distributed, collaborative, hypermedia information systems. tags is usually the content. 2) HTTP is the protocol to exchange or transfer hypertext.

What are l2 and l3 protocols?

There are several sorts of network protocols.

Layer 2 − The second layer is the data link layer. Data link layers 2 are best shown by Mac addresses and Ethernet. Layer 3 − Layer 3 is a network layer that identifies the best available communication channel in the network. Layer 3 is exemplified by an IP address.

What are the layer 3 protocols?

The protocols used in Layer 3 include:
  • Internet Protocols IPv4/v6.
  • Internet Control Message Protocol (ICMP)
  • Distance Vector Multicast Routing Protocol (DVMRP)
  • Internet Group Management Protocol (IGMP)
  • Address Resolution Protocol (ARP)
  • Internet Protocol Security (IPsec)
  • Routing Information Protocol (RIP)

What is TCP IP protocol?

Transmission Control Protocol/Internet Protocol
TCP/IP stands for Transmission Control Protocol/Internet Protocol. TCP/IP is a set of standardized rules that allow computers to communicate on a network such as the internet.

What is L4 in networking?

The L4 service network is known as a transport layer that includes TCP and UDP. L4-L7 network services provide data storage, manipulation, and communication services.

What OSI layer is DNS?

Layer 7
We know what DNS is, but what about the DNS layer? At a high level, the DNS protocol operates (using OSI model terminology) at the application level, also known as Layer 7. This layer is shared by HTTP, POP3, SMTP, and a host of other protocols used to communicate across an IP network.

What is Layer 2 testing?

Layer 2 Ethernet switches forward traffic, also called net- work frames, across various network segments. Forwarding is based on information in the frame’s Ethernet header. … After the equipment is deployed in live net- works, existing equipment can be retested in the lab using the same RFC-based test tools.

What is ISO layer?

ISO stands for International organization of Standardization. This is called a model for Open System Interconnection (OSI) and is commonly known as OSI model. The ISO-OSI model is a seven layer architecture. It defines seven layers or levels in a complete communication system.

What is L7 routing?

L7 routing takes its name from layer 7 of the OSI Model, also called the application layer. … The BIG-IP device then processes the application data of request traffic as it passes through a virtual server and applies corresponding Local Traffic Manager (LTM) policies and rules to make routing decisions.

Are firewalls layer 3 or 4?

Generally, firewalls are used to protect your internal/private LAN from the Internet. A firewall generally works at layer 3 and 4 of the OSI model. … Many firewalls today have advanced up the OSI layers and can even understand Layer 7 – the Application Layer.

What is TCP and UDP?

TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol. A key difference between TCP and UDP is speed, as TCP is comparatively slower than UDP. Overall, UDP is a much faster, simpler, and efficient protocol, however, retransmission of lost data packets is only possible with TCP.

What is OSI and TCP IP model?

OSI model is a generic model that is based upon functionalities of each layer. TCP/IP model is a protocol-oriented standard. … OSI model gives guidelines on how communication needs to be done, while TCP/IP protocols layout standards on which the Internet was developed. So, TCP/IP is a more practical model.

What is TCP IP Geeksforgeeks?

TCP/IP stands for Transmission Control Protocol/ Internet Protocol. It is a set of conventions or rules and methods that are used to interconnect network devices on the Internet.

What are port numbers?

A port number is a way to identify a specific process to which an internet or other network message is to be forwarded when it arrives at a server. All network-connected devices come equipped with standardized ports that have an assigned number.