SK0-005 server-administration Practice Test 9 — 15 Questions

Question 1

A server administrator is troubleshooting a Linux server that is experiencing performance issues. The administrator suspects that a specific process is consuming excessive CPU resources. Which two commands can be used to identify the process? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

ps aux --sort=-%cpu. The top and ps aux --sort=-%cpu commands both provide information about CPU usage per process. The top command offers a live, interactive view, while ps aux --sort=-%cpu gives a sorted snapshot. The other commands focus on disk space, network ports, and memory, which are not directly useful for identifying a CPU-intensive process.

Answer

free -m

Answer

netstat -tuln

Answer

df -h

Question 2

A server administrator is configuring a new Linux server that will host a web application. The application requires a persistent storage volume that can be easily expanded without downtime. The server has a single physical disk with 500 GB of free space. The administrator decides to use LVM (Logical Volume Management). Which of the following is the correct sequence of steps to create a new logical volume and mount it?

Accepted Answer

pvcreate, vgcreate, lvcreate, mkfs, mount. The correct order for setting up LVM is to create physical volumes, then a volume group, then logical volumes, then a filesystem, and finally mount it. This logical progression ensures that each layer is built upon the previous one. The other sequences violate the dependency order and would result in errors.

Answer

lvcreate, vgcreate, pvcreate, mkfs, mount

Answer

vgcreate, pvcreate, lvcreate, mkfs, mount

Answer

pvcreate, lvcreate, vgcreate, mkfs, mount

Question 3

A server administrator is setting up a new Windows Server 2022 server that will host a database. The server has four 1 TB NVMe drives. The administrator wants to maximize performance and provide redundancy against a single drive failure. Which RAID level should the administrator implement?

Accepted Answer

RAID 10. RAID 10 offers the best combination of performance and redundancy for a database server. It mirrors data across pairs of drives and stripes across those pairs, delivering fast reads and writes while tolerating drive failures. RAID 0 lacks redundancy, RAID 5 has write penalties, and RAID 6 adds further parity overhead, making RAID 10 the optimal choice.

Answer

RAID 5

Answer

RAID 0

Answer

RAID 6

Question 4

A server administrator is setting up a new Windows Server 2022 server that will host a database. The server has four 10 TB SAS drives. The administrator needs to configure the drives for maximum performance and fault tolerance, allowing the server to continue operating if one drive fails. Which RAID level should the administrator use?

Accepted Answer

RAID 10. RAID 10 is the best choice because it offers both fault tolerance and high performance. It stripes data across mirrored pairs, allowing the server to continue operating if one drive fails. For a database server, RAID 10 provides better write performance than RAID 5 and better capacity utilization than RAID 1, making it suitable for the stated requirements.

Answer

RAID 1

Answer

RAID 5

Answer

RAID 0

Question 5

A server administrator is configuring a Windows Server 2022 as an iSCSI target. The server will provide storage to multiple iSCSI initiators. The administrator wants to ensure that only authorized initiators can access the storage and that data is encrypted in transit. Which of the following should the administrator configure?

Accepted Answer

Enable CHAP authentication and IPsec encryption.. To secure iSCSI storage, authentication and encryption are essential. CHAP authenticates initiators, preventing unauthorized access. IPsec encrypts data in transit, ensuring confidentiality. Other options either use inappropriate protocols (SMB, Kerberos) or only provide partial security (ACLs without authentication).

Answer

Configure mutual CHAP and enable SMB signing.

Answer

Use Kerberos authentication and enable BitLocker on the target volumes.

Answer

Enable IPsec and configure access control lists (ACLs) on the target.

Question 6

A server administrator is troubleshooting a Linux server that is experiencing performance issues. The administrator suspects that a specific process is consuming excessive CPU resources. Which two commands can be used to identify the process? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

iotop -o. iostat -x 1 provides per-disk extended statistics, helping identify which disk is saturated. iotop -o shows per-process I/O usage, identifying which processes are causing the load. Together, they allow the administrator to correlate process activity with disk utilization. The other commands either focus on network, CPU/memory, or lack per-process or per-disk granularity.

Answer

top

Answer

vmstat 1

Answer

netstat -tuln

Question 7

A server administrator is configuring a new Windows Server 2022 server that will host a database. The server has four 10 TB SAS drives and a hardware RAID controller. The administrator needs to maximize performance for random reads and writes while providing redundancy. Which RAID level should the administrator implement?

Accepted Answer

RAID 10. RAID 10 stripes data across multiple mirrored pairs, delivering high random read and write performance while providing redundancy. For a database server with four drives, RAID 10 utilizes all drives for both performance and fault tolerance, unlike RAID 1 which uses only two drives for a single mirror, or RAID 5 which incurs write penalties due to parity. RAID 0 lacks redundancy, so it is not suitable.

Answer

RAID 0

Answer

RAID 5

Answer

RAID 1

Question 8

A server administrator needs to deploy a new Windows Server 2022 server that will run a critical application. The application requires high availability and automatic failover. The administrator has two identical physical servers and a SAN. Which Windows Server feature should the administrator implement?

Accepted Answer

Failover Clustering. Failover Clustering is the Windows Server feature designed to provide high availability and automatic failover for applications and services. When combined with shared storage such as a SAN, it allows applications to move between nodes seamlessly if a failure occurs. The other options either provide network load balancing, storage virtualization, or file replication, but not application failover.

Answer

Network Load Balancing (NLB)

Answer

Storage Spaces Direct

Answer

Distributed File System Replication (DFSR)

Question 9

A server administrator is configuring a new Linux server that will run a critical web application. The administrator needs to ensure that the web service automatically starts if the server reboots and restarts if it crashes. The server uses systemd. Which of the following should the administrator do?

Accepted Answer

Create a systemd service unit with Restart=always and enable it with systemctl enable.. Using a systemd service unit with Restart=always and enabling it is the correct method. systemd provides built-in service management, including automatic restart on failure and start on boot. This is the standard and most reliable way to ensure a critical service remains available on modern Linux servers.

Answer

Add the service to /etc/rc.local and use a cron job to check and restart it.

Answer

Use the nohup command to run the service in the background and add it to the root crontab with @reboot.

Answer

Configure the service as a SysV init script and use chkconfig to enable it.

Question 10

A server administrator is troubleshooting a Linux server that is experiencing performance issues. The administrator suspects that a specific process is consuming excessive CPU resources. Which two commands can be used to identify the process? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Avg. Disk sec/Transfer. Avg. Disk sec/Transfer is the correct counter because it directly measures the average time taken for disk transfers, encompassing both reads and writes. This counter is essential for identifying disk latency and bottlenecks. Other counters measure rate or queue length, which are indirect indicators and do not provide the average time per operation.

Answer

Avg. Disk Queue Length

Answer

Current Disk Queue Length

Answer

Disk Transfers/sec

Question 11

A server administrator is configuring a Windows Server 2022 failover cluster with two nodes. The cluster will host a highly available file server role. The administrator needs to ensure that the file server role can fail over automatically if one node goes down. The cluster has shared storage presented as a single disk. Which of the following should the administrator configure to meet this requirement?

Accepted Answer

Add the file server role as a clustered role and ensure the shared disk is added as a resource in the role.. The correct configuration is to add the file server role as a clustered role and include the shared disk as a resource in that role. This ensures that the role and its storage are managed together and can fail over automatically to the other node if one fails. The cluster service handles the failover based on node health and quorum.

Answer

Configure the file server role to use a distributed network name and a scale-out file server.

Answer

Enable Cluster Shared Volumes (CSV) and place the file server role on the CSV.

Answer

Configure the file server role with a preferred owner and set the failover threshold to 1.

Question 12

A server administrator is troubleshooting a Linux server that is experiencing performance issues. The administrator suspects that a specific process is consuming excessive CPU resources. Which two commands can be used to identify the process? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Resource Monitor. Resource Monitor provides real-time, per-process details on memory usage and hard page faults, which directly indicate paging activity. By examining the Memory tab and sorting by hard faults, the administrator can identify the process causing excessive paging. Task Manager lacks this granularity, Performance Monitor requires counter setup, and Event Viewer does not show real-time paging data.

Answer

Performance Monitor

Answer

Event Viewer

Answer

Task Manager

Question 13

A server administrator is configuring a RAID array for a new database server that requires high performance for random writes. The server has eight 1 TB SAS drives and a hardware RAID controller with a battery-backed write cache. The administrator needs to choose a RAID level that provides the best write performance while maintaining redundancy. Which RAID level should the administrator select?

Accepted Answer

RAID 10. RAID 10 provides the best random write performance among the options while maintaining redundancy. It uses mirroring for fault tolerance and striping for performance, avoiding the parity overhead that slows writes in RAID 5 and RAID 6. RAID 0 lacks redundancy, so it does not meet the requirement.

Answer

RAID 5

Answer

RAID 6

Answer

RAID 0

Question 14

A server administrator is configuring a Linux server to use iSCSI storage. The server has two network interfaces, eth0 and eth1, connected to the same switch. The administrator wants to ensure that iSCSI traffic is isolated from regular network traffic and that the iSCSI initiator uses both interfaces for redundancy and increased throughput. Which of the following should the administrator implement?

Accepted Answer

Configure VLAN tagging on eth0 and eth1 for iSCSI traffic and use multipathing with both interfaces.. To isolate iSCSI traffic and provide redundancy and throughput, the administrator should use VLAN tagging to separate iSCSI traffic on its own VLAN, and configure multipathing with both network interfaces. This allows the iSCSI initiator to use multiple paths, improving performance and fault tolerance, while keeping storage traffic separate from regular network traffic.

Answer

Configure link aggregation (bonding) on eth0 and eth1 and assign the iSCSI traffic to the bond interface.

Answer

Create a bridge interface between eth0 and eth1 and assign the iSCSI traffic to the bridge.

Answer

Enable jumbo frames on eth0 and eth1 and configure a single iSCSI session over eth0.

Question 15

A server administrator is configuring a Linux server to automatically mount an NFS share at boot. The server is running Ubuntu 22.04 LTS. The administrator adds the following line to /etc/fstab: 'server:/export /mnt/nfs nfs defaults 0 0'. After rebooting, the mount is not present, and the system logs show an error indicating the mount failed. Which of the following is the most likely cause?

Accepted Answer

The 'defaults' option does not include the '_netdev' option, so the mount is attempted before the network is online.. On systemd-based Linux distributions like Ubuntu 22.04, network filesystems in /etc/fstab require the '_netdev' option to ensure they are mounted after the network is online. Without it, the mount is attempted during early boot and fails because the network is not yet available. Adding '_netdev' to the options field resolves this by ordering the mount after network.target.

Answer

The mount point /mnt/nfs does not exist on the client.

Answer

The NFS version is not specified, so the client defaults to NFSv3, which is not supported by the server.

Answer

The NFS share is not exported with the correct permissions on the server.