aws and linux interview questions

 1).setup the ec2 ,vpc,subnet,route table ,interent gateway ,nat gateway ,jumb host

First we should create the network flow for giving architecure:

first we need to create the vpc:

go to vpc:

choose name for the vpc:

choose the ipv4 cider bloc

choose the ipv6 cider block

give ipv4 cider block ip address

tendancy

create dag 

then create for the vpc 

next we need to create the two subnets 

one is public and private subnets

subnets cidr block range is ends with 

/24

which means 256 ipaddress are avilble into subnets

For next we need to carete the interent gateway and attach 

to the vpc:

using this inetrnet gateway we can establish the network

connectivity between the vpc and inetrent 

this inetrent gatway is attached to the public subnets

next we need to create the two route tables

next subnets also associated with two route tables

route tables is used to establish the netwrok connectivoy

between the subnets with the help of interent gateway

next we need to add the two subnets into two route tables

one public subnets is needed to add the public route tables and added the route of igw

one private subnets is needed to add the private routes 

tables and added the route of natgatway

next we have to create the natgatway

Nat gateway - one way communications(one way route ware)

internet gateway - two way communications(two way route ware)

natgatway is cost .but its not free.

wherever we need it we can craete it or else we can delete it

next we need to craete the two ec2 servers

one server is created for public subnets

next ec2 servers is created for private subnets

if you want to get the local ipaddress:

go and search the ipinfo website

Linux interview questions:

1).what is the use of systemd in linux os ?

what services should be started or what services should be stopped at the

particular time of booting process.

that's called it as the systemd in linux os 

/etc/systemd/system 

2).what is the configuration file of systemctl in linux os ?

/etc/systemd/system/configurations

3).what is the virtual host in apache in linux os ?

we can host multiple website into the single machine

that's what we can use the virtual host into apache

4).what are the server's are available into apache in linux os ?

http server in apache 

5).how many webservers are available into apache?

ap per user traffic we can mention it webservers

apache, iis , tomcat and WebLogic and ngnix