Application load balancer Interview questions-part-01
Load balancer Interview Questions from server gyan
1).How do you select load balancer for your application
requiremet ?
we have three types of load balncer .
application load balnacer
netwrok load balncer
gateway load balnacer
base on their needs and reuirements we have to choose those load balnacers
2).which protocol does application elb supoort?
http and https
3)what are the steps to enable the http2 protocol on the
top of elb?
go to the load balnacer which we are craeted before.
under the loadbalnacer we have to see the options called as the descritpions
here we have to see the attributes
edit the attributes if u want :
here we can see the http2 protocol version
if you want we can enable or disable it
by default http2 is enabled on load balnacer.
dlete protections
access logs
mitigation mode
drop invalid header fields
4).does elb support statful applications?
yes its support .
what is the stateful and stateless ?
5).what are the steps to add ssl certificate with elb?
go to the load blancer which we are created .
we will go to add lisnter tab
here we have to choose the https protocol
here we can see the,
default actions
herew choose the target : where the request is forsted
to which url
default ssl certifuucate :
we cn create the certifucate from iam and acm and u imopted if its required
6).can i assciate ssl certificate from iam with elb?
yes we can upload it .
while uploading the ssl certificate we can upload it from iam as well
7).can i associate multiple ssl cert with elb?
yes .bydeafult we can assocuuate the multiple ssl certifcate into elb
based on the domain name which will be forward to the loadbalncer so appoatre certificate will be asociated
by loadbalancer wiht the particular request
8).can i return fix response from elb?
yes
go to add linstenr tab
go to edit rules
add the new rules here
then choose host header name (www.abc.com)
if you want we can add another rule here
go and choose the path
retun fixed response :
then return and fix response
response code would be the 443
response bosy .u are a wrong page
if someone tryng to access the page , then it will shows
the messages like as the ,
u are in a wrong page
9).does elb support ssl terminations?
yes
load balancer here
u have couple of target group it will be there
this load blnacer will accept the trffic port number 443
with the help of ssl terminations mechnisam ,what we will do its can be forward to the request to the
server . whenvere the server will respond back
then loadbalnacer will respond the back 443 port only
that's knows as ssl terminations
this only we can do it
10).how can i protect my webservers running behind elb?
ssl , waf ans shiled services without public ipaddress
then we can add the config services
11).what is layer 4 and layer7?
layer 4 == nlb
layer 7 ==alb
1).How do you select load balancer for your application
requiremet ?
we have three types of load balncer .
application load balnacer
netwrok load balncer
gateway load balnacer
base on their needs and reuirements we have to choose those load balnacers
2).which protocol does application elb supoort?
http and https
3)what are the steps to enable the http2 protocol on the
top of elb?
go to the load balnacer which we are craeted before.
under the loadbalnacer we have to see the options called as the descritpions
here we have to see the attributes
edit the attributes if u want :
here we can see the http2 protocol version
if you want we can enable or disable it
by default http2 is enabled on load balnacer.
dlete protections
access logs
mitigation mode
drop invalid header fields
4).does elb support statful applications?
yes its support .
what is the stateful and stateless ?
5).what are the steps to add ssl certificate with elb?
go to the load blancer which we are created .
we will go to add lisnter tab
here we have to choose the https protocol
here we can see the,
default actions
herew choose the target : where the request is forsted
to which url
default ssl certifuucate :
we cn create the certifucate from iam and acm and u imopted if its required
6).can i assciate ssl certificate from iam with elb?
yes we can upload it .
while uploading the ssl certificate we can upload it from iam as well
7).can i associate multiple ssl cert with elb?
yes .bydeafult we can assocuuate the multiple ssl certifcate into elb
based on the domain name which will be forward to the loadbalncer so appoatre certificate will be asociated
by loadbalancer wiht the particular request
8).can i return fix response from elb?
yes
go to add linstenr tab
go to edit rules
add the new rules here
then choose host header name (www.abc.com)
if you want we can add another rule here
go and choose the path
retun fixed response :
then return and fix response
response code would be the 443
response bosy .u are a wrong page
if someone tryng to access the page , then it will shows
the messages like as the ,
u are in a wrong page
9).does elb support ssl terminations?
yes
load balancer here
u have couple of target group it will be there
this load blnacer will accept the trffic port number 443
with the help of ssl terminations mechnisam ,what we will do its can be forward to the request to the
server . whenvere the server will respond back
then loadbalnacer will respond the back 443 port only
that's knows as ssl terminations
this only we can do it
10).how can i protect my webservers running behind elb?
ssl , waf ans shiled services without public ipaddress
then we can add the config services
11).what is layer 4 and layer7?
layer 4 == nlb
layer 7 ==alb
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