- (Topic 2)
A startup company is outgrowing its current office space and is requiring employees to work remotely. The company must comply with government-enforced requirements to safeguard all aspects of data, so the IT department plans to maintain complete control over users' operating systems. Which of the following should the IT department implement?
Correct Answer:
A
The IT department should implement VDI. Virtual Desktop Infrastructure (VDI) is a technology that allows users to access a desktop operating system from a remote location. VDI provides complete control over users’ operating systems, which is important for safeguarding data. VDI also provides a secure way to access data from remote locations, which is important for compliance with government-enforced requirements1.
- (Topic 4)
A cloud engineer, who is designing a cloud architecture, needs to ensure the solution is able to immediately fail over to another region in case of an outage and also scale up in the event of high utilization. Which of the following should the engineer Implement? (Select two).
Correct Answer:
AB
The answer is A. High availability and B. Elasticity.
High availability is the ability of a system to remain operational and accessible with minimal or no downtime, even in the event of failures, disasters, or disruptions. High availability can be achieved by designing a system that has redundancy, fault tolerance, and disaster recovery capabilities. For example, a cloud engineer can design a system that replicates data and resources across multiple regions, zones, or availability domains, and uses load balancing and failover mechanisms to distribute the workload and handle failures gracefully12.
Elasticity is the ability of a system to scale up or down automatically in response to changes in demand or utilization. Elasticity can be achieved by designing a system that can dynamically allocate and deallocate resources based on predefined metrics, policies, or triggers. For example, a cloud engineer can design a system that uses auto-scaling groups, horizontal or vertical scaling strategies, and on-demand or spot instances to optimize the performance and cost of the system32.
By implementing high availability and elasticity, a cloud engineer can ensure that the solution is able to immediately fail over to another region in case of an outage and also scale up in the event of high utilization. These are two important aspects of building reliable and scalable cloud architectures. Therefore, options A and B are the correct answers.
- (Topic 2)
Which of the following is the SAFEST way to replace RAM on a server that has a redundant power supply?
Correct Answer:
C
Utilizing a grounding strap is the safest way to replace RAM on a server that has a redundant power supply. This ensures that no static electricity is transferred to any of the server components, which could cause permanent damage. The other options are not the correct methods for replacing RAM. Unplugging one power cable is not recommended, as it could cause the server to go offline and disrupt any services that are running. Verifying the RAM temperature is not necessary and does not provide any additional safety measures, and replacing the RAM while the server is running is not recommended, as it could cause system instability.
- (Topic 3)
A user's laptop is running out of disk space and requires a new hard drive. The user wants to replace the existing hard drive with the fastest possible I TB HDD. A technician assesses the user's hardware and determines the connections that are available. Which of the following drive types should the technician recommend as the BEST choice?
Correct Answer:
A
The best choice for the user's laptop is a 1TB NVMe SSD. NVMe (Non- Volatile Memory Express) is a high-performance storage protocol designed specifically for solid-state drives (SSDs). It is significantly faster than SATA SSDs and SAS hard drives, making it ideal for users who need fast storage for their laptop. NVMe SSDs also have lower latency and higher bandwidth than traditional hard drives, making them well-suited for data-intensive tasks such as video editing, gaming, and running multiple applications simultaneously. Additionally, NVMe offers more reliable data reliability than traditional hard drives, and is less susceptible to performance degradation over time.
- (Topic 4)
A user added a heater underneath a desk, and now an external monitor is not working. A technician verified the monitor gets power. Which of the following should the technician do next?
Correct Answer:
A
The next step that the technician should do is to have the user unplug the heater. This is because the heater may be causing electromagnetic interference (EMI) or radio frequency interference (RFI) that affects the signal transmission between the computer and the monitor. EMI and RFI are types of noise or distortion that can degrade the quality or integrity of data signals, especially in analog connections such as VGA. EMI and RFI can be generated by various sources, such as power lines, motors, fans, heaters, microwaves, radios, or cell phones. EMI and RFI can cause various symptoms on the monitor, such as flickering, ghosting, blurring, color shifting, or no display at all.
To troubleshoot EMI and RFI issues, the technician should follow these steps:
✑ Identify the source of the interference. In this case, the heater is the most likely culprit, as it was added recently and is located close to the monitor or the cable.
✑ Eliminate or reduce the interference. The technician should have the user unplug the heater or move it away from the monitor or the cable. The technician should also check if there are any other potential sources of interference nearby and remove or relocate them if possible.
✑ Test the monitor. The technician should verify if the monitor is working properly after unplugging or moving the heater. If the monitor is still not working, the technician should try other troubleshooting steps, such as checking the display settings on the computer, ensuring the VGA cable is connected properly, or replacing the monitor.
References:
✑ How to Fix Monitor Flickering - CCM1
✑ How to Fix a Flickering Laptop Screen - Lifewire2
✑ How to Fix a Flickering Monitor - Techwalla3
✑ How to Troubleshoot Display or Video Issues on a Monitor4
✑ How to Troubleshoot a Monitor That Won’t Turn On - Lifewire5