20+ practice questions focused on server-administration — one of the most tested topics on the CompTIA Server+ SK0-005 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start server-administration PracticeA SQL Server database administrator wants to backup a large database (500 GB) with minimal impact on transaction log growth and recovery time. Which TWO backup strategies should the administrator implement? (Choose two.)
Explanation: Weekly full backups (B) are correct because they establish a regular recovery baseline for the 500 GB database without generating excessive log growth, since a full backup does not truncate the log but sets the foundation for the recovery chain. Transaction log backups every 15 minutes (C) are correct because frequent log backups truncate the inactive portion of the transaction log, keeping log growth minimal and enabling point-in-time recovery with a short recovery time objective (RTO). Together, B and C form a standard full + log recovery model that limits log file expansion and minimizes data loss. A tail-log backup (A) is only needed before restoring a database or when the database is damaged/offline, not before every full backup. Daily differential backups (D) reduce restore time but do not control transaction log growth, and hourly copy-only backups (E) do not truncate the log or participate in the recovery chain, so they fail to address the stated goals.
Refer to the exhibit. A Linux server is reporting slow I/O on the root filesystem. Which of the following actions should the administrator take to resolve the immediate storage bottleneck?
Explanation: The exhibit shows the root filesystem is the bottleneck, so the immediate remediation is to reduce I/O pressure on / by relocating non-essential data to a separate volume or mount point such as /backup. This directly addresses the root cause — contention on the root device — without risky operations like resizing or RAID changes. It is the least invasive action that resolves the immediate bottleneck.
Refer to the exhibit. A server administrator configured iptables rules on a Linux server. Immediately afterward, they are unable to connect to the server via SSH. The output of 'iptables -L INPUT -n' is shown. What is the most likely cause of the connectivity issue?
Explanation: iptables processes rules in order. The DROP rule for destination port 22 appears before the ACCEPT rule, so all incoming SSH packets are dropped before the ACCEPT rule can permit new connections.
A server administrator receives an alert that a critical server's disk is almost full. Upon investigation, the administrator finds a large log file that has grown significantly. The log file is rotated daily, but today's rotation failed. Which command should the administrator use FIRST to free up space immediately?
Explanation: The `> /var/log/large.log` command truncates the file to zero bytes while keeping the file handle open, which immediately frees disk space without disrupting any process that is actively writing to the log. This is the safest first step because it avoids breaking logging continuity and does not require stopping services.
A medium-sized organization runs several critical virtual machines on a Windows Server 2019 Hyper-V host with 64 GB of RAM and two 12-core processors. One of the VMs, a database server, has been experiencing intermittent performance degradation, specifically during peak hours. The VM is configured with 4 vCPUs and 16 GB of static memory. The host's overall CPU utilization rarely exceeds 40%, and memory usage is around 50%. The administrator logs into the host and checks the VM's CPU usage in Hyper-V Manager, which shows it averaging 65% with occasional spikes to 95%. However, inside the VM, Task Manager shows constant 95-100% CPU usage on all logical processors. No other VMs are reporting performance issues. The administrator needs to determine the root cause and apply a fix that does not involve adding more physical resources or rebooting the production VM during business hours. Which of the following actions should the administrator take?
Explanation: The discrepancy between host-side Hyper-V Manager CPU (65% average) and in-guest Task Manager (95-100% on all logical processors) points to a virtual processor scheduling or measurement issue, not a raw resource shortage. Using Performance Monitor on the host to examine 'Hyper-V Hypervisor Virtual Processor' counters for the VM and compare them with in-guest metrics is the correct diagnostic step to identify whether the VM is being throttled, waiting on a virtual processor, or misreporting CPU usage.
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Practice all server-administration questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of server-administration. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
server-administration questions on the SK0-005 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. server-administration is tested as part of the CompTIA Server+ SK0-005 blueprint. Practicing with targeted server-administration questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but server-administration is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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