Which of these services will help in better availability?
Answers
For what are you charged while using cloud front ?
a)Data Transfer
b)http/https request
c)Machine hours
d)Invalidation request
what ELB will do if one of the instance fails healthchecks
a)It will not send data to the instatnce
b)spin up new instance
c)restart the instance
d)ELB will send the data to the instance frequently
Can we use a single ELB for handling http and HTTPS request?
a)Yes we can map http port 80 HTTPS port 443 to a single ELB
b)NO
is penetration testing is allowed for the customers
a)customer can do penetration teting anytime
b)yes with prior notification to aws
c)AWS provide monthly schedule to every customer
how do access data on EBS
a)only from an EC2
b)anywhere from internet
c)anywhere from inside aws
d)depends upon how it was initiated
which 2 service will help in better avalabilty
a)instance store and spot insistance
b)SNS AND SES
C)LOAD BALACER AND AUTO SCALING
d)rds and ebs
how can u troubleshoot if u cannot ssh to an instance
a)check if port 22 is open
b)terminate and launch new instance
c)check if port 3389 is open
d)none of the above
Q)cloud formation enables which of these feature
a)changes instance metadata
b)high speed computing
c)created customized file for the system
d)all of above
Answer:
Explanation:
High availability means auto Scaling of instances based on number of requests coming in. So if heavy load is coming it auto scales.
Following are AWS (Amazon Web Services) services for high availability.
• VPC – Virtual Private Cloud.
• Route53 – DNS service.
• EC2 – Elastic Compute Cloud.
• AWS RDS – Relational Database.
• AS – Auto Scaling.
• ELB – Elastic Load Balancer.
• SNS – Simple Notification Service.
• AMI – Amazon Machine Image.