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The SK0-005 exam includes 90 multiple-choice and performance-based questions, and the candidate has 90 minutes to complete the exam. SK0-005 exam is available in English and Japanese, and the passing score is 750 on a scale of 100-900. SK0-005 Exam Fee is $359, and the certification is valid for three years. CompTIA recommends that candidates have at least 18-24 months of experience in server management before attempting the exam. CompTIA Server+ Certification Exam Sample Questions (Q120-Q125):NEW QUESTION # 120
An administrator is troubleshooting an application performance issue on a virtual server with two vCPUs. The application performance logs indicate CPU contention. The administrator adds more vCPU cores to the VM, yet the issue persists. Which of the following is the most likely reason for this issue?
A. The application is single-threaded.
B. The server has high disk latency.
C. The server has high page utilization.
D. The application cannot be virtualized.
Answer: A
Explanation:
Explanation
A single-threaded application is an application that can only execute one task or process at a time. A single-threaded application can only utilize one CPU core, regardless of how many cores are available or assigned to the virtual machine. Therefore, adding more vCPU cores to the VM will not improve the performance of the application, as it will still be limited by the speed and capacity of one core12.
To troubleshoot this issue, the administrator should check if the application is single-threaded or multi-threaded. This can be done by using tools such as Task Manager, Performance Monitor, or Process Explorer on Windows, or top, htop, or ps on Linux34. If the application is single-threaded, the administrator should consider the following options:
Reduce the number of vCPU cores on the VM to match the number of threads that the application can use. This can help avoid CPU contention and co-stop issues that may arise from having too many vCPUs relative to the number of physical cores on the host5.
Upgrade the physical CPU on the host to a faster or newer model that can provide higher clock speed and performance for the single core that the application uses.
Optimize the application code or configuration to make it more efficient or multi-threaded, if possible.
This can help the application take advantage of multiple cores and improve its performance.
NEW QUESTION # 121
An administrator needs to disable root login over SSH. Which of the following tiles should be edited to complete this task?
A. /root/.ssh/ssh_config
B. /etc.sshs_shd_config
C. /root.ssh/sshd/config
D. /etc.ssh/sshd_config
Answer: D
Explanation:
Explanation
To disable root login over SSH, the server administrator needs to edit the SSH configuration file located at
/etc/ssh/sshd_config. This file contains various settings for the SSH daemon that runs on the server and accepts incoming SSH connections. The administrator needs to find the line that says PermitRootLogin and change it to no or comment it out with a # symbol. Then, the administrator needs to restart the SSH service for the changes to take effect. References: https://www.howtogeek.com/828538 ... -over-ssh-on-linux/
NEW QUESTION # 122
An application needs 10GB of RAID 1 for log files, 20GB of RAID 5 for data files, and 20GB of RAID 5 for the operating system. All disks will be 10GB in capacity. Which of the following is the MINIMUM number of disks needed for this application?
A. 0
B. 1
C. 2
D. 3
Answer: B
Explanation:
To calculate the minimum number of disks needed for this application, we need to consider the RAID levels and their disk requirements. RAID 1 requires a minimum of two disks and provides mirroring, which means that data is duplicated on both disks. RAID 5 requires a minimum of three disks and provides striping with parity, which means that data is distributed across all disks with one disk storing parity information for error correction. RAID 5 can tolerate one disk failure without losing data. To create a 10GB RAID 1 array for log files, we need two 10GB disks. To create a 20GB RAID 5 array for data files, we need four 10GB disks (three for data and one for parity). To create a 20GB RAID 5 array for the operating system, we need another four 10GB disks (three for data and one for parity). Therefore, the total number of disks needed is 2 + 4 + 4 = 10. However, since we can use different RAID levels for different partitions on the same disk, we can optimize the disk usage by using only eight disks as follows: Disk 1: 10GB RAID 1 (log files) + 10GB RAID 5 (data files) Disk 2: 10GB RAID 1 (log files) + 10GB RAID 5 (data files) Disk 3: 10GB RAID 5 (data files) + 10GB RAID 5 (OS) Disk 4: 10GB RAID 5 (data files) + 10GB RAID 5 (OS) Disk 5: 10GB RAID 5 (parity for data files) + 10GB RAID 5 (OS) Disk 6: 10GB RAID 5 (OS) + unused space Disk 7: 10GB RAID 5 (parity for OS) + unused space Disk 8: unused space References: https://en.wikipedia.org/wiki/Standard_RAID_levels
NEW QUESTION # 123
A company recently implemented VolP across a multicampus environment with ten locations. The company uses many network technologies, including fiber, copper, and wireless. Users calling between three of the locations have reported that voices sound strange.
Which of the following should be monitored to
narrow down the issue?
A. Disk IOPS
B. CPU utilization
C. Network latency
D. RAM utilization
Answer: C
Explanation:
Network latency is the measure of delay in data transmission over a network. It can affect the quality of voice over IP (VoIP) calls by causing echo, jitter, or distortion. Network latency can be caused by various factors such as network congestion, distance, routing, or bandwidth. To monitor network latency, you can use tools such as ping, traceroute, or network analyzers.
References: CompTIA Server+ Study Guide, Chapter 6: Networking, page 237.
NEW QUESTION # 124
An administrator is configuring a new server for use as a database server. It will have two mirrored drives to hold the operating system, and there will be three drive bays remaining for storage Which of the following RAID levels will yield the BEST combination of available space and redundancy?
A. RAIDS
B. RAID 1
C. RAID 10
D. RAID
Answer: C
Explanation:
Explanation
RAID 10 is the RAID level that will yield the best combination of available space and redundancy when configuring a new server for use as a database server with two mirrored drives for the operating system and three drive bays remaining for storage. RAID 10, also known as RAID 1+0, is a RAID configuration that combinesdisk mirroring and disk striping to protect data. It requires a minimum of four disks and stripes data across mirrored pairs. As long as one disk in each mirrored pair is functional, data can be retrieved. RAID 10 provides high performance, fault tolerance, and fast recovery, but it reduces storage capacity by half. RAID 0 is a RAID configuration that splits data across two or more drives without parity or redundancy. It improves performance but offers no fault tolerance. If one drive fails in RAID 0, all data is lost and the system cannot boot. RAID 1 is a RAID configuration that duplicates data across two or more drives. It provides fault tolerance and improves read performance, but reduces storage capacity by half. If one drive fails in RAID 1, the other drive can continue to operate without data loss or system downtime. RAID 5 is a RAID configuration that stripes data across three or more drives with parity information. It provides fault tolerance and improves performance, but reduces storage capacity by one drive's worth of space. RAID 5 can tolerate one drive failure without data loss, but not two or more. References: https://www.howtogeek.com/199068 ... hour/https://www.ho
NEW QUESTION # 125
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