A systems administrator needs to create a data volume out of four disks with the most redundancy. Which of the following is the best solution?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 6
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Correct Answer: D
Explanation: RAID 6 uses dual parity and can tolerate any two disk failures in a four-disk array, giving the strongest standard fault tolerance among the listed options. RAID 5 tolerates one failure, RAID 0 none, and RAID 1’s redundancy depends on how the disks are mirrored.
Question 82
A systems administrator is setting up a second VLAN for end users. Which of the following should be provisioned for a DHCP server to be able to receive client requests from a different subnet?
A. DHCP options
B. NIC teaming
C. Zone transfers
D. Relay agent
E. VLAN ID
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Correct Answer: D
Explanation: DHCP client requests are broadcast within their local subnet and do not cross routers. A DHCP relay agent (often configured as an IP helper) forwards those requests to the DHCP server on another subnet.
Question 83
Which of the following concepts is in use when dual power supplies are connected to different power sources?
A. Fault tolerance
B. Active-passive
C. Component redundancy
D. Heartbeat
E. Link aggregation
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Correct Answer: A
Explanation: Connecting dual power supplies to different power sources allows the system to keep operating if either a supply or its power source fails. That ability to continue through a failure is fault tolerance; the duplicate supplies are one way to achieve it.
Question 84
A server administrator deployed a new product that uses a non-standard port for web access on port 8443. However, users are unable to access the new application. The server administrator checks firewall rules and determines 8443 is allowed. Which of the following is most likely the cause of the issue?
A. Intrusion detection is blocking the port.
B. The new application's DNS entry is incorrect.
C. The application should be changed to use port 443.
D. The core switch has a network issue.
Show Answer
Correct Answer: B
Explanation: A misconfigured DNS entry could direct users to the wrong server or address, preventing access to the application. An IDS typically detects and alerts rather than blocking traffic, and port 8443 does not have to be changed to 443 if it is allowed and the application is configured to use it.
Question 85
A site is considered a warm site when it:
A. has basic technical facilities connected to it.
B. has faulty air conditioning that is awaiting service.
C. is almost ready to take over all operations from the primary site.
D. is fully operational and continuously providing services.
Show Answer
Correct Answer: C
Explanation: A warm site has much of the infrastructure and equipment needed for recovery, but typically requires some setup or data restoration before it can take over operations. It is nearly ready, unlike a cold site with only basic facilities or a hot site that is already fully operational.
Question 86
The accounting department needs more storage and wants to retain the current data for quick read-write access. The accounting server does not have any internal drive bays available to keep both disks; however, the server does have USB 3.0 and eSATA ports available. Which of the following is the best way to accomplish the department's goals?
A. Copy the existing data to an external USB 3.0 enclosure.
B. Place the existing data on a DVD and use the internal DVD-ROM drive.
C. Transfer the existing data to an external eSATA enclosure.
D. Move the existing data to a new, larger internal hard drive.
Show Answer
Correct Answer: C
Explanation: An external eSATA enclosure provides fast read-write access while avoiding the need for internal drive bays. It is the best fit for keeping the existing data readily accessible.
Question 87
A server administrator recently installed a kernel update to test functionality. Upon reboot, the administrator determined the new kernel was not compatible with certain server hardware and was unable to uninstall the update. Which of the following should the administrator do to mitigate further issues with the newly installed kernel version?
A. Edit the bootloader configuration file and change the first kernel stanza to reflect the file location for the last known-good kernel files.
B. Perform a complete OS reinstall on the server using the same media that was used during the initial install.
C. Edit the bootloader configuration file and move the newest kernel update stanza to the end of the file.
D. Set a BIOS password to prevent server technicians from making any changes to the system.
Show Answer
Correct Answer: A
Explanation: Configure the bootloader to use the last known-good kernel by default. This avoids repeatedly booting the incompatible kernel while preserving the existing OS and data.
Question 88
An administrator is deploying a new secure web server. The only administration method that is permitted is to connect via RDP. Which of the following ports should be allowed? (Choose two.)
A. 53
B. 80
C. 389
D. 443
E. 445
F. 3389
G. 8080
Show Answer
Correct Answer: D, F
Explanation: Allow port 443 for secure HTTPS web traffic and port 3389 for Remote Desktop Protocol (RDP) administration.
Question 89
A server technician notices several of the servers in a data center are making loud noises. The servers are still working correctly, and no indicator lights show any issues. Which of the following should the technician do first to ensure the issues are corrected and the servers remain online?
A. Replace the drives.
B. Upgrade the firmware.
C. Establish a remote connection to the server.
D. Replace the fans.
Show Answer
Correct Answer: C
Explanation: Establish a remote connection first to review each server’s hardware status and logs without interrupting service. The noise may indicate a fan issue, but the technician should identify the cause before replacing components or changing firmware.
Question 90
Which of the following types of asset management documentation is commonly used as a reference when processing the replacement of a faulty server component?
A. Warranty
B. Purchase order
C. License
D. Baseline document
Show Answer
Correct Answer: A
Explanation: Warranty documentation is consulted to determine whether a faulty server component is covered for repair or replacement and to follow the applicable terms.
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