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Free PDF Quiz WGU - Efficient Cloud-Deployment-and-Operations - WGU Cloud Deployment and Operations Exam Torrent

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WGU Cloud Deployment and Operations Sample Questions (Q33-Q38):

NEW QUESTION # 33
(A company has implemented multifactor authentication (MFA) for access to its AWS tenant. Which API call is needed to perform MFA before accessing a resource?)

A. GetFederationToken
B. DecodeAuthorizationMessage
C. GetSessionToken
D. GetCallerIdentity

Answer: C

Explanation:
The `GetSessionToken` API call is needed to perform MFA before accessing a resource, as it generates temporary security credentials for an IAM user after MFA validation. This ensures secure access to AWS resources. The WGU Cloud Deployment and Operations Study Guide (Section 6.2, IAM and MFA) states,
"The `GetSessionToken` API is used with MFA to obtain temporary credentials, requiring a valid MFA code to authenticate the user before resource access is granted." GetCallerIdentity, GetFederationToken, and DecodeAuthorizationMessage serve different purposes and do not handle MFA authentication.

NEW QUESTION # 34
(Which two retention periods are supported by Performance Insights? Choose 2 answers.)

A. 2 years
B. 1 day
C. 7 days
D. 1 year

Answer: C,D

Explanation:
Amazon RDS Performance Insights supports retention periods of 7 days and 1 year for storing performance data, depending on the configuration and edition. The default retention is 7 days for standard monitoring, while enabling enhanced monitoring or the Performance Insights extended retention feature allows data to be retained for up to 1 year. The WGU Cloud Deployment and Operations Study Guide (Section 7.2, Performance Insights) states, "Performance Insights offers a 7-day retention period by default, with an option to extend to 1 year for detailed historical analysis, supporting cost and performance optimization." Options A (1 day) and D (2 years) are not supported retention periods.

NEW QUESTION # 35
(An administrator successfully accesses an EC2 instance via SSH from a local computer then stops it and starts it. Following the restart, the EC2 instance is no longer accessible. Which solution should be used to resolve the issue?)

A. Add a rule to the security group associated with the NIC of the EC2 instance
B. Change the IP address used to connect to the EC2 instance
C. Change the port used to connect to EC2 instance
D. Add a route to the route table associated with the EC2 instance subnet

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
After stopping and starting an EC2 instance, the public IP address may change (unless an Elastic IP is attached), but the security group rules remain intact. If the instance is no longer accessible via SSH, it's likely due to an inbound rule (e.g., for port 22) not being correctly configured or applied. Adding or verifying a rule in the security group associated with the network interface (NIC) to allow SSH (port 22) from the administrator's IP resolves this. The WGU Cloud Deployment and Operations Study Guide (Section 3.2, Security Groups) states, "Stopping and starting an EC2 instance may require verifying or adding an inbound SSH rule (port 22) in the security group if connectivity is lost due to IP or rule misconfiguration." Route table or IP changes are not the primary issue here.

NEW QUESTION # 36
(A company is using the CloudWatch agent on its EC2 Linux instances. The company needs to determine how long read requests have waited on the instance's I/O for proper sizing of the instance. Which metric should the company use?)

A. disk_read_ops
B. diskio_reads
C. diskio_read_bytes
D. disk_io_time

Answer: D

Explanation:
The `disk_io_time` metric, collected by the CloudWatch agent on EC2 Linux instances, measures the total time (in milliseconds) that read and write requests have waited on I/O, helping to assess disk performance for instance sizing. The WGU Cloud Deployment and Operations Study Guide (Section 4.1, CloudWatch Agent Metrics) states, "The `disk_io_time` metric, available via the CloudWatch agent, tracks the time spent waiting for I/O operations, providing insight into disk contention for optimizing EC2 instance sizing." disk_read_ops, diskio_reads, and diskio_read_bytes measure operation counts or bytes, not wait times.

NEW QUESTION # 37
(A company has the following disaster recovery requirements: The loss of up to three hours of data is acceptable. Services must be restored within one hour of failure. Which recovery characteristics will allow the company to meet the requirements?)

A. RPO 2 hours, RTO 1 hour
B. RPO 1 hour, RTO 2 hours
C. RPO 1 hour, RTO 4 hours
D. RPO 4 hours, RTO 1 hour

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Recovery Point Objective (RPO) measures the maximum acceptable data loss, while Recovery Time Objective (RTO) measures the maximum acceptable downtime. The company requires an RPO of up to 3 hours (acceptable data loss) and an RTO of 1 hour (service restoration time). The correct option is RPO 4 hours, RTO 1 hour, as it meets the RPO requirement (allowing up to 3 hours of data loss is within 4 hours) and satisfies the RTO of 1 hour. The WGU Cloud Deployment and Operations Study Guide (Section 8.1, Disaster Recovery) states, "RPO defines the maximum data loss tolerance (e.g., 3 hours), and RTO defines the maximum downtime (e.g., 1 hour); a configuration of RPO 4 hours and RTO 1 hour aligns with these thresholds." Other options fail to meet both criteria simultaneously.

NEW QUESTION # 38
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Ted Ward Ted Ward

Biography

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