Services and more Flashcards
What is the usable HDD Storage for:
- Snowcone
- Snowball
- Snowmobile
- Snowcone: 8 TB
- Snowball: 80 TB
- Snowmobile: 100 PB
Explain Route 53 Simple routing policy
Use for a single resource that performs a given function for your domain, for example, a web server that serves content for the example.com website. You can use simple routing to create records in a private hosted zone.
Explain Route 53 Failover routing policy
Use when you want to configure active-passive failover. You can use failover routing to create records in a private hosted zone.
Explain Route 53 Geolocation routing policy
Use when you want to route traffic based on the location of your users. You can use geolocation routing to create records in a private hosted zone.
Explain Route 53 Geoproximity routing policy
Use when you want to route traffic based on the location of your resources and, optionally, shift traffic from resources in one location to resources in another.
(Uses bias to set a weight)
Explain Route 53 Latency routing policy
Use when you have resources in multiple AWS Regions and you want to route traffic to the region that provides the best latency. You can use latency routing to create records in a private hosted zone.
Explain Route 53 IP-based routing policy
Use when you want to route traffic based on the location of your users, and have the IP addresses that the traffic originates from.
Explain Route 53 Multivalue routing policy
Use when you want Route 53 to respond to DNS queries with up to eight healthy records selected at random. You can use multivalue answer routing to create records in a private hosted zone.
Explain Route 53 Weighted routing policy
Use to route traffic to multiple resources in proportions that you specify. You can use weighted routing to create records in a private hosted zone.
Explain CIDR range 192.168.10.255/32
/32 means that that the IP range selected only a single IP address 192.168.10.255
+0.0.0.0
addresses: 1 = 2 to the 0
Explain CIDR range 192.168.10.255/31
/31 means that that the IP range selected only 2 IP addresses 192.168.10.254 and 192.168.10.255
+0.0.0.1
addresses: 2 = 2 to the first
Explain CIDR range 192.168.10.255/30
/30 means that that the IP range selected only 4 IP addresses 192.168.10.252, 192.168.10.253, 192.168.10.254 and 192.168.10.255
+0.0.0.3
addresses: 4 = 2 to the second
Explain CIDR range 192.168.10.255/24
/24 means that that the IP range selected only 4 IP addresses 192.168.10.0 to 192.168.10.255
+0.0.0.255
addresses: 256 = 2 to the eight
What is AWS Proton?
AWS Proton allows you to deploy any serverless or container-based application with increased efficiency, consistency, and control
Is it possible to assign an Elastic IP to an Application Load Balancer?
No
Name 3 types of Network Adapters
- ENI - basic type
- ENA - for enhanced networking, high bandwidth and low latency
- EFA (fabric adapter) - for high performance computing
Can an ASG with predictive scaling policy contains instances of different types and sizes?
No. Predictive scaling assumes that your Auto Scaling group is homogenous, which means that all EC2 instances are of equal capacity.
Using the default settings, which will be the first instance that will be terminated when the scale-in policy triggers?
The EC2 instance launched from the oldest launch configuration
In Auto Scaling, the following statements are correct regarding the cooldown period.
- It ensures that the Auto Scaling group does not launch or terminate additional EC2 instances before the previous scaling activity takes effect.
- Its default value is 300 seconds.
- It is a configurable setting for your Auto Scaling group.
What can you do to create an asynchronous copy of a S3 bucket?
Enable Replication. Either Cross-Region Replication (CRR) or Same-Region Replication (SRR). Buckets can be in different AWS accounts. Ensure versioning is enabled and to give S3 proper IAM permissions.
What are use-cases for using S3 Pre-Signed URLs?
- Give someone temporary access to a file in a private bucket.
- Allow only logged in users to download premium content.
- Allow a user to upload a file to a bucket for temporary time.
A company is hosting a static website on S3. The assets are hosted from a different S3 bucket. The website is not displaying the images. What can be the cause?
CORS is probably not enabled on the assets bucket, so the CORS headers are not sent as a response to the preflight request.
Which service can be used to perform a lift-and-shift migration to the cloud?
AWS Application Migration Service (AWS MGN) is the primary migration service recommended for lift-and-shift migrations to AWS
What’s the difference between Amazon S3 server access logs and CloudTrail Logs?
AWS CloudTrail logs provide a record of actions taken by a user, role, or an AWS service in Amazon S3, while Amazon S3 server access logs provide detailed records for the requests that are made to an S3 bucket.
