1.What is the difference between Network firewall & Os level firewall?
Network Firewall-A Network Firewall is a security device used to protect illegal access to private networks by using policies defining the only traffic allowed on the network; any other traffic seeking to connect is blocked.
OS firewall-A firewall acts as a gatekeeper. It monitors attempts to gain access to your operating system and blocks unwanted traffic or unrecognized sources
3.What is the diff between public and pvt ip?
A public IP address identifies you to the wider internet so that all the information you're searching for that can find you.
A private IP address is used within a private network to connect securely to other devices within that same network.
4.What is Region and Availability zone?
AWS Regions are large and widely dispersed into separate geographic locations.
Availability Zones are different locations within an AWS Region that are engineered to be isolated from failures in other Availability Zones.
5.What are the types of Storage and use case of it?
There are 3 type of storage block storage (system bus/elastic block storage"EBS"),Network storage(elastic file storage"EFS") it connect through network and the last object storage(like google drive).
Block storage's controls on data and device storage.It takes any data and it divided it in to equal blocks.
6.What is Policy and Permission in IAM?
IAM-Identity and Access Management
IAM policy is a document with a set of rules. Each IAM policy grants a specific set of permissions.Policies are attached to IAM identities like Users, Groups and Roles.
7.Write down and understanding of a concept of network, subnet, network firewall, internet gateway, route table?
A network is the combination of two or more computers and their connecting links. A physical network is the hardware equipment such as adapters, cables and telephone lines that makes up the network.
A subnet is a network inside a network. Subnets make networks more efficient. Through subnetting, network traffic can travel a shorter distance without passing through unnecessary routers to reach its destination.
A Network Firewall is a security device used to protect illegal access to private networks by using policies defining the only traffic allowed on the network; any other traffic seeking to connect is blocked.
The gateway converts information one protocol to another. The gateway gives us entry into different networks so we can send email, look at Web pages, buy things online, and more things to do.
A route table is a set of rules. Mostly it viewed in table format.A routing table is a database that keeps track of paths and uses these to determine which way to forward traffic.