At 9:00 am each morning, all of the virtual desktops in a VDI implementation become extremely slow and/or unresponsive. The outage lasts for around 10 minutes, after which everything runs properly again. The administrator has traced the problem to a lab of thin clients that are all booted at 9:00 am each morning. Which of the following is the MOST likely cause of the problem and the BEST solution? (Select TWO).
A . Add guests with more memory to increase capacity of the infrastructure.
B . A backup is running on the thin clients at 9am every morning.
C . Install more memory in the thin clients to handle the increased load while booting.
D . Booting all the lab desktops at the same time is creating excessive 1/0.
E . Install 10-Gb uplinks between the hosts and the lab to increase network capacity.
F . Install faster SSD drives in the storage system used in the infrastructure.
G . The lab desktops are saturating the network while booting.
H . The lab desktops are using more memory than is available to the host systems.
Answer: D, F
Explanation:
The problem lasts for 10 minutes at 9am every day and has been traced to the lab desktops. This question is asking for the MOST likely cause of the problem. The most likely cause of the problem is that the lab desktops being started at the same time at the beginning of the day is causing excessive disk 1/0 as the operating systems are being read and loaded from disk storage.
The solution is to install faster SSD drives in the storage system that contains the desktop operating systems.
Incorrect Answers:
A: If a lack of memory was the cause of the problem, the problem would occur throughout the day; not just for the 10 minutes it takes to boot the lab desktops. Therefore adding guests with more memory will not solve the problem so this answer is incorrect.
B: This question is asking for the MOST likely cause of the problem. A backup running on the thin clients at 9am every morning as soon as the lab desktops start up is an unlikely cause of the problem. It is much more likely that the lab desktops starting up at the same time is causing high disk 1/0.
C: The lab desktops starting up would not cause memory issues on the thin clients so adding memory will not solve the issue.
E: The lab desktops starting up would not cause network bandwidth issues so increasing the bandwidth will not solve the issue.
G: The lab desktops starting up would not saturate the network.
H: If the lab desktops are using more memory than is available to the host systems, the problem would occur throughout the day; not just for the 10 minutes it takes to boot the lab desktops.