SK0-005 Practice Test 10 — 10 Questions

Question 1

A medium-size enterprise runs a vSphere 7.0 cluster with two hosts (HostA and HostB) for production VMs. Each host has two 10GbE uplinks (vmnic0 and vmnic1) connected to separate physical switches (SW1 and SW2) for redundancy. A single vSphere standard switch (vSwitch0) uses both uplinks with teaming policy set to 'Route based on originating virtual port ID,' 'Network failure detection: Link status only,' and 'Notify switches: Yes.' Lately, several VMs running on HostA experience intermittent network disconnections lasting 20–30 seconds, while VMs on HostB are unaffected. The administrator checks vCenter events and sees repeated messages: 'Lost uplink redundancy on vSwitch0. vmnic0 is down.' followed seconds later by 'Uplink redundancy restored. vmnic0 is up.' The physical switch SW1's log shows the port for vmnic0 transitions through spanning-tree listening and learning states each time this occurs, taking about 15 seconds. The link is a trunk allowing all necessary VLANs, with no errors or security violations. The network team has already swapped the fiber cable and SFP+ transceiver for vmnic0 without improvement. The VMs affected are those whose virtual ports are pinned to vmnic0 by the load-balancing policy; VMs pinned to vmnic1 never experience disconnections. The administrator has also rebooted HostA and updated the NIC firmware, but the flapping continues. What should the administrator do to permanently resolve the intermittent connectivity?

Accepted Answer

Enable spanning-tree PortFast on the SW1 and SW2 ports connected to the hosts so the ports bypass the listening/learning states.. Option C is correct because the symptoms as confirmed by the switch log show that each link flap triggers spanning-tree recalculation, causing the port to cycle through listening and learning states before forwarding resumes. Enabling PortFast on switch ports that are connected to end devices (like ESXi hosts) allows immediate forwarding. Option A is wrong because changing to access mode would break multiple VLANs and still face STP delays. Option B is wrong because disabling notify switches might worsen MAC table inconsistencies. Option D is wrong because changing load balancing does not stop the flapping or STP convergence; the issue is at layer 2.

Answer

Disable the 'Notify switches' option on the vSwitch teaming configuration to avoid unnecessary RARP broadcasts.

Answer

Reconfigure the physical switch port for vmnic0 to an access port instead of a trunk to simplify spanning-tree operations.

Answer

Change the NIC teaming load balancing policy to 'Route based on IP hash' to distribute traffic across both uplinks more evenly.

Question 2

Refer to the exhibit. A technician receives an alert from the monitoring system showing the error in the exhibit. The server is still online, but performance has degraded. Which of the following is the MOST likely cause and appropriate action?

Accepted Answer

The hard disk drive is failing; back up data and replace the drive. Event ID 11 from Disk source indicates a controller error, often due to a failing disk or cable. The most likely cause is a failing hard drive. Backing up and replacing the drive is the appropriate action. Bad sectors might be the symptom but replacing is safer. Driver corruption is less likely; high I/O wouldn't cause a controller error.

Answer

The SATA controller driver is corrupted; reinstall the driver

Answer

The disk has a bad sector; run CHKDSK and monitor

Answer

The disk is experiencing high I/O; upgrade to SSD

Question 3

A server administrator needs to deploy a new server that will host a database requiring high random read/write performance and maximum fault tolerance. The server has eight drive bays. Which RAID level should the administrator choose?

Accepted Answer

RAID 10. RAID 10 is the best choice for database servers needing high random I/O performance and fault tolerance. It stripes data across mirrored pairs, delivering fast reads and writes while allowing for drive failures. RAID 0 lacks redundancy, RAID 5 has write penalties and only single-drive fault tolerance, and RAID 6 has even greater write overhead. RAID 10 balances performance and redundancy effectively.

Answer

RAID 6

Answer

RAID 0

Answer

RAID 5

Question 4

An organization requires a disaster recovery site that can be operational within 24 hours after a disaster declaration, with critical data replicated on a regular basis, but not necessarily real-time. Which type of site should they implement?

Accepted Answer

Warm site. A warm site provides pre-installed hardware and network infrastructure, along with data backups that can be loaded and activated within a day. Hot sites offer immediate failover but are more expensive and not necessary here. Cold sites are empty space and take weeks. An alternate processing site is a vague term.

Answer

Alternate processing site

Answer

Cold site

Answer

Hot site

Question 5

An organization stores backup tapes at an offsite facility. The tapes contain sensitive customer data. A security audit revealed that tapes were stolen from the facility. Which combination of measures would have MOST effectively prevented unauthorized data access?

Accepted Answer

Encrypt all backup data with strong encryption and restrict decryption keys to authorized personnel.. Encrypting backup data with strong encryption and restricting decryption keys to authorized personnel (A) is the most effective control because it renders stolen tapes unreadable. Even if physical controls fail — as they did here — the data remains confidential without the keys. This is the principle of cryptographic protection as a last line of defense for data at rest.

Answer

Password-protect the tapes and keep them in a locked safe.

Answer

Store tapes in a fireproof safe and limit access to key personnel.

Answer

Use a bonded courier service for transportation.

Question 6

A company's disaster recovery plan requires that a critical database server be restored at an alternate site within a recovery time objective (RTO) of 4 hours. The database is 2 TB in size, and the company has a 100 Mbps WAN link between the primary and alternate sites. The administrator needs to choose a replication method that meets the RTO without requiring manual intervention at the alternate site. Which solution should the administrator implement?

Accepted Answer

Asynchronous storage replication with automated failover. Asynchronous replication with automated failover balances the need for timely recovery with the constraints of a 100 Mbps WAN link. It avoids the latency-induced performance hit of synchronous replication while enabling the alternate site to activate the database without manual steps, satisfying the 4-hour RTO.

Answer

Log shipping with manual transaction log application

Answer

Daily full backups shipped to the alternate site on tape

Answer

Synchronous storage replication with manual failover

Question 7

A server administrator is investigating a Linux file server that periodically becomes unresponsive for several minutes. During an outage, the administrator runs top and iostat and observes that %iowait is extremely high while CPU utilization remains low. Disk latency on the data volume spikes to several seconds. The storage is a hardware RAID 10 array with healthy member disks, and no rebuild or patrol read is active. Which of the following are the MOST likely causes of the observed latency? (Choose two.)

Accepted Answer

The RAID controller's write-back cache has been disabled or switched to write-through mode. High %iowait with low CPU utilization and multi-second latency on a healthy RAID 10 array points to storage-side saturation. Disabling write-back caching forces synchronous writes to media, and heavy small-block random I/O from a backup or antivirus sweep can exhaust the array's IOPS, both producing the episodic stalls described. Eliminating rebuild activity and memory or network causes leaves these two as the most likely culprits.

Answer

The server's memory is running in single-channel mode instead of dual-channel mode

Answer

The network interface has negotiated a lower speed, causing the file server's clients to time out

Answer

The array is rebuilding after a member disk replacement, consuming all available controller bandwidth

Question 8

A company stores nightly full backups on an external USB drive that is rotated weekly and kept in a locked cabinet in the same server room. A recent audit found that a fire in the server room would destroy both the production data and the backup drive. The company wants to improve the backup strategy so that a site-wide disaster does not eliminate all copies, while keeping costs low. Which of the following is the BEST change to meet these requirements?

Accepted Answer

Configure the backup software to write a copy to a cloud object storage bucket in a different region after each nightly job.. The audit finding is about the lack of an off-site copy, so the fix must move at least one backup copy to a different location. Writing a nightly copy to cloud object storage in another region provides geographic separation at low cost and aligns with the 3-2-1 backup principle. Additional local drives, RAID, and more frequent backups do not protect against a site-wide fire.

Answer

Enable RAID 6 on the server's internal disks so that two disk failures can be tolerated.

Answer

Add a second USB drive that is rotated daily but stored in the same locked cabinet.

Answer

Increase the backup frequency from nightly to hourly to reduce the recovery point objective.

Question 9

A server administrator is configuring a new Windows Server 2022 file server. The server will host a share that must be accessible to both Windows and macOS clients. The administrator needs to ensure that file permissions are enforced consistently across both platforms. Which two of the following should the administrator implement? (Choose two.)

Accepted Answer

Ensure that the macOS clients connect using SMB.. To enforce permissions consistently for both Windows and macOS clients, the administrator should use NTFS permissions, which are enforced by the server regardless of client OS, and ensure macOS clients connect via SMB. macOS supports SMB and will honor NTFS ACLs. ABE only affects visibility, SMB encryption only secures data in transit, and Services for Macintosh is obsolete.

Answer

Configure the share to use SMB 3.1.1 with encryption.

Answer

Install Services for Macintosh (SFM) on the server.

Answer

Enable Access-Based Enumeration (ABE) on the share.

Question 10

Users report slow file server performance. The administrator suspects a single process is consuming excessive CPU and wants to analyse its threads and handles. Which tool should be used?

Accepted Answer

Resource Monitor. Resource Monitor (resmon.exe) in Windows provides detailed per-process analysis including CPU usage, thread-level details, and handle counts, making it the right tool to inspect a specific process's threads and handles. It offers a granular view that Task Manager lacks, such as the ability to see which threads are consuming CPU and what handles a process has open. This directly addresses the administrator's need.

Answer

System Information

Answer

Task Manager

Answer

Performance Monitor