EC2 COPY COPY Flashcards
True or False: Throughput-optimized volumes cannot be boot volumes.
True.
How long does it take for changes to a security group to take effect?
Changes take effect immediately.
True or False: EC2 instance termination protection is turned on by default.
False.
True or False: EC2 instance termination protection is turned off by default.
True.
__________ can help you reduce costs by allowing you to use your existing server-bound software licences.
Dedicated hosts.
Which EC2 pricing options is recommended for:
- Apps that have flexible start and end times
- Apps that are only feasible at very low compute prices
- Users with urgent computing needs for large amounts of additional capacity
Spot instances.
True or False: When creating snapshots of EBS volumes that serve as root devices, you should stop the instance first.
True.
Which EC2 instance type provides hardware acceleration for your code (FPGA)?
F
What is EFS?
A file storage service for EC2 instances.
Which EC2 instance type is the lowest-cost for general purposes?
T
True or False: No EBS volumes attached to default AMIs can be encrypted.
False. Volumes other than the root volume may be encrypted.
Can you change EBS volume size, size and storage type on-the-fly?
Yes.
True or False: When you first create a security group, all outbound traffic is allowed by default.
True.
Which AWS offering is a file storage service for EC2 instances?
Elastic File System (EFS).
You can share snapshots with other people, but only if they’re __________.
Unencrypted.
True or False: When you first create a security group, all outbound traffic is blocked by default.
False.
When AWS terminates your spot instance early, who pays for the hour of compute time?
AWS.
EBS allows you to create __________ and attach them to EC2 instances.
Storage volumes.
What is the speciality of the C EC2 instance type?
Compute optimized.
True or False: You can only mount one EBS volume on a single EC2 instance.
True.
Are security groups stateful?
Yes.
True or False: Reserved instances are recommended for customers than can commit to using EC2 over a year or three years.
True.
Which EC2 pricing option allows you to pay for 1 or 3 years of compute capacity in advance to receive up to a 75% discount compared to on-demand pricing?
Reserved instances.
Which EBS volumes cannot be boot volumes?
Throughput-optimized HDD and Cold HDD.
What is the speciality of the T EC2 instance type?
General purpose. Lowest cost.
__________ are placed in a specific availability zone, where they are automatically replicated to protect you from the failure of a single component.
EBS volumes.
What are AMIs used for?
As templates for creating new EC2 instances.
EC2 instance termination protection is turned __________ by default.
Off.
Which EC2 instance type is memory optimized (not to the extreme)?
R
What is a snapshot of an EBS volume?
A copy of the EBS volume at a particular point in time.
True or False: When AWS terminates your spot instance early, you’re still billed for the whole hour.
False. AWS pays for the whole hour.
What are the different types of magnetic (HDD) EBS volumes?
- Throughput-optimized HDD (ST1)
- Cold HDD (SC1)
- Magnetic standard
What is the speciality of the F EC2 instance type?
Field programmable gate array.
__________ allows you to create storage volumes and attach them to EC2 instances.
EBS.
True or False: General purpose SSD volumes are designed for I/O intensive applications.
False. Provisioned IOPS SSD volumes were designed for that.
Snapshots of EBS volumes are stored in __________.
S3.
What does it mean that snapshots are incremental?
Only blocks that have changed since the last snapshot are moved to S3.
True or False: When you first create a security group, all inbound traffic is allowed by default.
False.
Can you create AMIs from EBS volumes?
Yes.
True or False: Dedicated hosts can be purchased as a Reservation for up to 70% off of the on-demand price.
True.
What is a dedicated host?
A physical EC2 server dedicated for your use.
Can you specify deny rules within a security group?
No. You can only specify allow rules.
What is the speciality of the M EC2 instance type?
General purpose.
Templates used to create new EC2 instances are called __________.
Amazon Machine Images (AMIs).
Which EC2 instance type is optimized for compute?
C
True or False: Although on default AMIs the EBS root volume can’t be encrypted, additional volumes can be encrypted.
True.
Which EC2 pricing option allows you to request spare EC2 computing capacity for up to 90% off the on-demand price?
Spot instances.
Which EBS volume type is recommended for low cost storage for infrequently accessed workloads?
Cold HDD volumes.
True or False: When you terminate our spot instance early, you’re refunded for the rest of the hour.
False. You pay for the entire hour unless AWS terminates your spot instance.
True or False: Cold HDD volumes can be boot volumes.
False.
True or False: Spot instances are recommended for users with urgent computing needs for large amounts of additional capacity.
True.
__________ are designed for I/O intensive apps like large relational or NoSQL databases.
Provisioned IOPS SSD volumes.
Where are snapshots stored?
S3.
What does AMI stand for?
Amazon Machine Image.
True or False: You cannot create AMIs from snapshots.
False.
To move an EC2 volume from one AZ/Region to another, take a __________ or image of it, then copy it to the new AZ/Region.
Snapshot.
True or False: Magnetic standard volumes can be boot volumes.
True.
True or False: You can only specify allow rules within a security group.
True.
What is the speciality of the I EC2 instance type?
High speed storage.
Snapshots are typically used for __________.
Backup.
True or False: Changes to security groups can take up to five minutes to take effect.
False. Changes take effect immediately.
True or False: Security groups cannot be used to block specific IP addresses.
True.
True or False: An EBS volume from us-west-2c can be mounted to an EC2 instance in us-west-2a.
False. The EBS volume and EC2 instance must be in the same availability zone.
True or False: Snapshots of encrypted volumes are encrypted automatically.
True.
What is the speciality of the G EC2 instance type?
Graphics intensive.
__________ are the lowest cost per GB of all bootable EBS volume types.
Magnetic standard.
A __________ is a physical EC2 server provisioned only for your use.
Dedicated host.
True or False: With security groups, if you create an inbound rule allowing traffic, you must remember to create an outbound rule allowing that same traffic out.
False. Security groups are stateful.
All EBS volume types can be modified except for __________.
Magnetic standard.
What happens to the root EBS volume by default when the EC2 instance it’s attached to is terminated?
The volume is deleted.
What does it mean for a security group to be stateful?
If you create an inbound rule allowing traffic in, that traffic is automatically allowed back again.
True or False: On-demand instances are recommended for apps with unpredictable workloads that cannot be interrupted.
True.
Provisioned IOPS SSD volumes are designed for __________ apps.
I/O intensive.
True or False: Dedicated hosts are recommended for apps that may require reserved capacity.
False. Reserved instances are recommended for that.
Can an EBS volume be directly moved from one availability zone to another?
No.
True or False: Dedicated hosts can be purchased on-demand (hourly).
True.
Which EC2 pricing option is recommended for:
- Apps with steady state usage
- Apps that may require reserved capacity
- Customers that can commit to using EC2 over a 1 or 3 year term to reduce their total computing costs
Reserved instances.
Which EC2 instance type is optimized for extreme memory requirements?
X
EBS volumes are automatically __________ to protect you from the failure of a single component.
Replicated.
__________ volumes are recommended for data warehouses.
Throughput-optimized HDD volumes.
Which EC2 pricing option is useful for regulatory requirements that may not support multitenant virtualization?
Dedicated hosts.
True or False: When you first create a security group, all inbound traffic is blocked by default.
True.
What is the speciality of the D EC2 instance type?
Dense storage.
Which EC2 instance type specializes in dense storage?
D
True or False: Changes to security groups take effect immediately.
True.
EBS root volumes of the default AMIs (can|cannot) be encrypted.
Cannot.
In order to mount an EBS volume on an EC2 instance, both must exist in the same __________.
Availability zone.
True or False: Volumes restored from encrypted snapshots are not encrypted automatically.
False.
Which EC2 pricing option is recommended for:
- Users that prefer compute without any up-front payment or long-term commitment
- Apps with short-term, spiky, or unpredictable workloads that can’t be interrupted
- Apps being developed or tested on EC2 for the first time
On-demand instances.
To move an EC2 volume from one AZ/Region to another, take a snap or __________ of it, then copy it to the new AZ/Region.
AMI.
True or False: General purpose SSD volumes balance both price and performance.
True.
Can you snapshot an EBS volume while the EC2 instance it’s attached to is running?
Yes.
What are the steps to move an EBS volume from one availability zone to another?
- Take a snapshot of the volume.
- From that snapshot, create a new volume and assign it a different availability zone.
True or False: Reserved instances are recommended for apps with steady state usage.
True.
True or False: A single security group can cover a max of 256 EC2 instances
False. One security group can cover an unlimited number of EC2 instances.
EBS volumes are placed in a specific __________, where they are automatically replicated to protect you from the failure of a single component.
Availability zone.
True or False: All EBS volume types can be modified.
False. Magnetic standard EBS volumes cannot be modified.
__________ are typically used to back up EBS volumes.
Snapshots.
Which EBS volumes can be boot volumes?
General purpose SSD, Provisioned IOPS SSD, and Magnetic standard.
Dedicated hosts can help you reduce costs by allowing you to use __________.
Your existing server-bound software licenses.
True or False: When AWS terminates your spot instance early, then only pay for the rest of the hour.
False. AWS pays for the WHOLE hour.
Which SSD EBS volume types cannot be boot volumes?
None. All SSD volumes can be boot volumes.
What is the speciality of the P EC2 instance type?
Graphics/General purpose GPU.
True or False: Spot instances are recommended for apps that are only feasible at very low compute prices.
True.
What is the speciality of the R EC2 instance type?
Memory optimized.
What does EBS stand for?
Elastic Block Store.
What is the speciality of the X EC2 instance type?
Extreme memory optimized.
How many EC2 instances can be covered by a security group?
Any number.
True or False: On-demand instances are recommended for apps being developed on EC2 for the first time.
True.
Which HDD EBS volume types can be boot volumes?
Only the magnetic standard volume type.
Which EC2 instance type is optimized for graphics and general purpose GPU?
P
Which EBS volume type should you use if you need more than 10,000 IOPS.
Provisioned IOPS SSD volumes.
Are security groups stateless?
No.
True or False: On-demand instances are recommended for users that want to receive a discounted rate for up-front payment.
False. Reserved instances are recommended for that.
What does EFS stand for?
Elastic File System.
You can have (1|multiple) security groups attached to EC2 instances.
Multiple.
To move an EC2 volume from one AZ/Region to another, take a snap or image of it, then __________.
Copy it to the new AZ/Region.
True or False: You can mount one EBS volume to multiple EC2 instances.
False. You can only mount an EBS volume on a single EC2 instance.
True or False: Spot instances are recommended for apps that have flexible start and end times.
True.
Which EC2 instance is optimized for high-speed storage?
I
True or False: A single security group can cover any number of EC2 instances.
True.
When you terminate your spot instance early, who pays for the hour of compute time?
You do.
What are the different pricing options for EC2 instances?
- On-demand instances
- Spot instances
- Reserved instances
- Dedicated hosts
Which EBS volume type is recommended for big data, data warehouses, or log processing?
Throughput-optimized HDD volumes.
Which EC2 pricing option allows you to pay for compute capacity per hour (or per second, for Linux instances)?
On-demand instances.
What EC2 pricing option allows you to bid whatever price you want for instance capacity?
Spot instances.
Which EC2 instance type is designed for general purposes?
M
True or False: With security groups, if you create an inbound rule allowing traffic, the security group will automatically allow that traffic out again.
True.
True or False: An EC2 instance can only be covered by a single security group.
False.
What are the different types of SSD EBS volumes?
- General purpose SSD (GP2)
- Provisioned IOPS SSD (IO1)
Can security groups be used to block specific IP addresses?
No. Use NACLs for that.
What is a security group?
A virtual firewall.
True or False: Reserved instances are recommended for apps with short-term, spiky workloads that cannot be interrupted.
False. On-demand instances are recommended for that.
Which EC2 instance is optimized for graphics?
G
