70-413 Exam Quality Control & Assurance 4 — Questions and Answers
Question 1: Your QA process mandates that all virtual machine checkpoints are removed before a VM enters production. Which risk does retaining checkpoints in a production Hyper-V environment pose?
- Checkpoints prevent live migration between cluster nodes
- AVHD differencing disks grow unbounded and can exhaust storage (Correct answer)
- Checkpoints disable dynamic memory allocation
- Retained checkpoints block snapshot-based backup
Correct answer: AVHD differencing disks grow unbounded and can exhaust storage
Each Hyper-V checkpoint creates an AVHD differencing disk that grows as writes accumulate; in production, this can rapidly consume storage and degrade I/O performance.
Question 2: A deployment validation test requires confirming that NIC teaming is correctly load-balancing traffic across both physical adapters. Which PowerShell cmdlet displays real-time traffic statistics per team member NIC?
- Get-NetAdapterStatistics (Correct answer)
- Get-NetLbfoTeamMember
- Get-NetAdapterTeaming
- Get-NetLbfoTeam
Correct answer: Get-NetAdapterStatistics
Get-NetAdapterStatistics returns per-adapter packet and byte counters that you can compare across team member NICs to verify load distribution is occurring.
Question 3: A QA engineer needs to validate that iSCSI LUNs provisioned to a Windows Server 2012 R2 host are correctly aligned to 4K physical sector boundaries. Which tool identifies partition alignment on presented storage?
- iSCSI Initiator properties dialog
- Diskpart — list partition
- MSInfo32 storage section
- WMI query on Win32_DiskPartition StartingOffset (Correct answer)
Correct answer: WMI query on Win32_DiskPartition StartingOffset
Querying Win32_DiskPartition.StartingOffset via WMI reveals the byte offset of each partition; dividing by 4096 (or 1MB) confirms alignment to physical sector boundaries.
Question 4: During load testing of a new IIS-based internal application server, you need to generate realistic HTTP request loads. Which built-in Windows Server tool can simulate concurrent web requests for performance validation?
- Web Capacity Analysis Tool (WCAT) (Correct answer)
- IIS Manager Application Request Routing tester
- Netsh http trace
- HttpSys log parser
Correct answer: Web Capacity Analysis Tool (WCAT)
WCAT (Web Capacity Analysis Tool) is a Microsoft tool that generates configurable HTTP/HTTPS load against IIS to validate throughput, latency, and failure behavior under stress.
Question 5: A change control process requires that all server OS deployments be performed from approved WDS images only. Which WDS feature prevents technicians from booting into unapproved images?
- PXE response policy set to 'Respond to known clients only'
- WDS image group NTFS permissions restricting access
- Require administrator approval for all PXE connections (Correct answer)
- Disabling the WDS TFTP service for unknown MACs
Correct answer: Require administrator approval for all PXE connections
Enabling the 'Require administrator approval' option in WDS forces all PXE boot requests to queue for manual approval, preventing unauthorized or unapproved image deployments.
Question 6: Your infrastructure QA requires verifying that time synchronization is accurate across all domain controllers to within 5 minutes (Kerberos requirement). Which command checks the current NTP source and offset on a Windows Server?
- w32tm /query /status (Correct answer)
- net time /querysntp
- w32tm /monitor
- tzutil /l
Correct answer: w32tm /query /status
W32tm /query /status displays the current NTP source, last successful sync time, and clock offset for the local machine, confirming Kerberos-compliant time synchronization.
Question 7: A QA validation step requires confirming that Windows Server Failover Clustering validation tests pass before a cluster is approved for production workloads. Which validation category specifically tests shared storage accessibility from all nodes?
- Network validation tests
- Storage validation tests (Correct answer)
- System Configuration tests
- Hyper-V Configuration tests
Correct answer: Storage validation tests
The Storage validation category in the Failover Cluster Validation Wizard tests that all nodes can simultaneously access shared storage and verifies disk path redundancy.
70-413 Exam Quality Control & Assurance 4
Your QA process mandates that all virtual machine checkpoints are removed before a VM enters production.
Which risk does retaining checkpoints in a production Hyper-V environment pose?