Learn why an overloaded host server is the most likely cause of slow performance on a cloud-based application hosted on a shared virtual server, according to CompTIA A+ Core 1 220-1101 exam standards. Discover how resource contention impacts virtual environments and application speed.
Table of Contents
Question
A user reports slow performance on a cloud-based application. The application is hosted on a shared virtual server. What is the most likely cause?
A. Insufficient VM resources
B. Network latency
C. Overloaded host server
D. Incorrect user permissions
E. Outdated application version
Answer
C. Overloaded host server
Explanation
Slow performance in a shared virtual server environment is often due to the host server being overloaded with multiple VMs, causing resource contention.
When a cloud-based application runs slowly on a shared virtual server, the most common cause is an overloaded host server. In shared environments, multiple virtual machines (VMs) compete for a finite set of physical resources such as CPU, RAM, disk I/O, and network bandwidth. If the host server is running too many VMs or resource-intensive applications, resource contention occurs—meaning each VM receives less than optimal resources, leading to degraded performance for applications hosted on those VMs.
Typical symptoms include sluggish response times, increased latency, and application timeouts, even if individual VMs are configured correctly. This is a well-documented issue in virtualized and cloud environments and is distinct from problems caused by network latency, insufficient resources allocated to a single VM, or software misconfigurations. Monitoring host resource utilization and redistributing workloads or upgrading host capacity are standard solutions for this scenario.
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