Questions Based On Computer Network

Two technologies by which would connect two offices in remote locations are VPN and Cloud computing.

Internetworking is a combination of two words, inter and networking which implies an association between totally different nodes or segments. This connection area unit is established through intercessor devices akin to routers or gateway. The first term for associate degree internetwork was interconnected. This interconnection is often among or between public, private, commercial, industrial, or governmental networks. Thus, associate degree internetwork could be an assortment of individual networks, connected by intermediate networking devices, that function as one giant network. Internetworking refers to the trade, products, and procedures that meet the challenge of making and administering internet works.

Application layer
Presentation layer
Session layer

Network layer
Datalink layer
Physical layer

The full form of HTTPS is Hypertext transfer protocol secure. It is an advanced version of the HTTP protocol. Its port number is 443 by default. It uses SSL/TLS protocol for providing security.

Some services provided by the application layer in the Internet model are as follows:
Mail services
Directory services
File transfer
Access management
Network virtual terminal

At Data link layer trailer is added and at OSI model layer 6,5,4,3 added header.

In the OSI model, as a data packet moves from the lower to upper layers, headers get removed.

In the OSI model, as a data packet moves from the upper to lower layers, headers are added. This header contains useful information.

A Zone-based firewall is an advanced method of the stateful firewall. In a stateful firewall, a stateful database is maintained in which source IP address, destination IP address, source port number, destination port number are recorded. Due to this, only the replies are allowed i.e if the traffic is Generated from inside the network then only the replies (of inside network traffic) coming from outside the network is allowed.