AWS Hypervisors Flashcards
What is a hypervisor, or virtual machine monitor (VMM)?
A computer software, firmware, or hardware that creates and runs virtual machines.
What is a computer that runs one or more virtual machines?
a host machine
What is a virtual machine on a host machine called?
a guest machine
Which hypervisor technology does AWS use?
Xen (although C5 instances may use KVM)
Are guest VMs aware of other VMs?
No. They have no interaction with each other.
How are customers isolated in AWS?
By the firewall
What are the layers of isolation?
Physical interface, firewall, security groups, virtual interface, hypervisor, customer accounts
Who is responsible for access to the AWS hypervisor?
AWS.
Does AWS log all access into the AWS management console?
yes
Who is responsible for guest access into an EC2 instance?
The customer
If you lose access into your EC2 instance, never fear, AWS has access to the EC2, your passwords, and certificates. True or False?
False. AWS has no access to your EC2 instances.
What is memory scrubbing?
EBS resets every block of storage used to ensure data is never exposed to another customer. Memory is not returned to the pool until each block is set to 0
What is the prefered choice? HVM or PV?
HVM wheverever possible
What does HVM stand for?
Hardware virtualized machine
what does PV stand for?
paravirtualization
