Router:- model. Repeater:- Repeater regenerate the signals and

Router:-  Router is the network device which transmit
the data packets from one computer to another computer. Router belongs to
the  third layer of OSI model, which is
network layer.

 

Switch:-  Switch is network device which channelize the
incoming data from various  recourse to
the belonging output. Switch belongs to network layer and multilayered switches
belongs to network and higher layers.

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Hub:- A hub is a  device which is used to connect ether-net
make them work together as a one segment. Hub belongs to layer one which is
physical layer.

 

NIC:-
Network
Interface Controller is a computer hardware component , which connects computer
to a network. NIC belongs to both physical and data link layer.

 

Ethernet:- Ethernet is
used in local area network to connect computer in a network. Ethernet operates
in two layers, data link layer and physical layer.

 

Bridge:- Bridge is a
network device which separates the single network from different networks.

Bridge belongs to data link layer of OSI
model.

 

Repeater:- Repeater
regenerate the signals and send them further, repeater is usually connected
between the two segments of cables. Repeater works at physical layer of the OSI
model.

 

Proxy:- Proxy server
works on the application layer of the OSI model. Proxy server acts as the
intermediate between the two ends and hides the actual IP address of the host.

 

ARP:- Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP
address) to a physical machine address that is recognized in the local network. ARP belongs to layer 2, which
is data link layer.

 

IP:- An Internet Protocol address (IP
address) is unique set of numbers separated by the periods which
identifies the computer over the internet to communicate with each other. It
belongs to network layer.

 

ICMP:- Internet Control message protocol is used to send error
messages such as host is out of reach or requested service is unavailable.  It belongs to network layer.

 

TCP:- Transmission Control Protocol is the set of rules which
sends the data over the networks from one computer to another computer. It is
connection oriented protocol. TCP works on transport layer.

 

UDP:- User datagram Protocol is use the send data from one
computer to another but it is connectionless protocol. It belongs to transport
layer.

 

NAT:- Network Address Translation is method to translate the IP
address while traveling over the network. NAT works on different layers of OSI
model.

 

TLS/SSL:- Transport layer security /
secure socket layer are the encryption protocol which provide the security over
the network.

 

HTTPS:- Hypertext Transfer Protocol Secure (HTTPS) is a variant of the standard
web transfer protocol (HTTP) that adds a layer of security on the data in
transit through a secure socket layer (SSL) or transport layer security (TLS)
protocol connection.