AWS architecture interview questions part-39|Cloud Institution

AWS Solutions Architect Questions and Answers Part-38

Get ready to excel in your AWS Solutions Architect certification with this comprehensive collection of questions and answers. Covering critical topics like cloud architecture design, AWS services, security best practices, and cost optimization, these Q&A sessions will help you gain a deep understanding of AWS concepts and prepare effectively for the exam. Whether you are a beginner or an experienced professional, these answers provide clear explanations and practical examples to solidify your AWS knowledge and boost your confidence.

1.What is Oracle SQL Developer?

A.An AWS developer who is an expert in Amazon RDS using both the Oracle and SQL Server DB engines

B.A graphical Java tool distributed without cost by Oracle.

C.It is a variant of the SQL Server Management Studio designed by Microsoft to support Oracle DBMS functionalities

D.A different DBMS released by Microsoft free of cost

Answer:B

A graphical Java tool distributed without cost by Oracle.

Explanation:

Oracle SQL Developer is a free graphical tool provided by Oracle that allows developers and database administrators to manage and interact with Oracle databases.
It is written in Java and supports SQL development, database design, administration, and migration.
SQL Developer provides features similar to SQL Server Management Studio (SSMS) but is specifically designed for Oracle Database.

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2.What is the maximum write throughput I can provision for a single Dynamic DB table?

A.1,000 write capacity units

B.100,000 write capacity units

C.Dynamic DB is designed to scale without limits, but if you go beyond 10,000 you have to contact AWS first.

D.10,000 write capacity units

Answer:C

DynamoDB is designed to scale without limits, but if you go beyond 10,000 you have to contact AWS first.

Explanation:

Amazon DynamoDB is designed to scale elastically based on demand.
By default, you can provision up to 10,000 write capacity units (WCU) per table.
If you need more than 10,000 WCUs, you must contact AWS support to request a service limit increase.
On-Demand Mode automatically scales without requiring manual WCU provisioning.

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3.What happens to the I/O operations while you take a database snapshot?

A.I/O operations to the database are suspended for a few minutes while the backup is in progress.

B.I/O operations to the database are sent to a Replica (if available) for a few minutes while the backup is in progress.

C.I/O operations will be functioning normally

D.I/O operations to the database are suspended for an hour while the backup is in progress

Answer:D

I/O operations to the database are suspended for a few minutes while the backup is in progress.”

Explanation:

When you take a manual snapshot of an Amazon RDS database, I/O operations are briefly suspended while the snapshot is being created.
This suspension usually lasts a few minutes, depending on the database size and workload.
The impact is minimized for Multi-AZ deployments, where backups are taken from the standby replica to avoid affecting the primary instance.
Automated backups occur in the background with minimal performance impact.

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4.What does specifying the mapping /dev/sdc=none when launching an instance do?

A.Prevents /dev/sdc from creating the instance.

B.Prevents /dev/sdc from deleting the instance.

C.Set the value of /dev/sdc to ‘zero’.

D.Prevents /dev/sdc from attaching to the instance.

Answer:D

Prevents /dev/sdc from attaching to the instance.

Explanation:

When launching an Amazon EC2 instance, you can use block device mappings to control attached storage volumes.
Specifying /dev/sdc=none means that no volume will be attached to /dev/sdc, effectively disabling that device mapping.
This is useful when you don’t want to attach a default volume that AWS might otherwise assign.

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5.Changes to the backup window take effect ______.

A.from the next billing cycle

B.after 30 minutes

C.immediately

D.after 24 hours

Answer:C

immediately

Explanation:

Changes to the backup window for an Amazon RDS instance take effect immediately after modification.
However, if a backup is already in progress, the new window will apply starting from the next scheduled backup.
You can modify the backup window using the AWS Management Console, CLI, or API.