SK0-005 시험 - CompTIA실제시험문제와 답 - 90문항

Question No : 1

A technician is laying out a filesystem on a new Linux server.
Which of the following tools would work BEST to allow the technician to increase a partition's size in the future without reformatting it?

A.LVM
B.DiskPart
C.fdisk
D.Format

정답:
Explanation:
LVM (Logical Volume Manager) is a tool that allows the technician to increase a partition’s size in the future without reformatting it on a Linux server. LVM creates logical volumes that can span across multiple physical disks or partitions and can be resized dynamically without losing data. LVM also provides other features such as snapshots, encryption, and RAID. DiskPart, fdisk, and Format are tools that can be used to partition and format disks, but they do not allow increasing a partition’s size without reformatting it.
Reference:
https://www.howtogeek.com/howto/40702/how-to-manage-and-use-lvm-logical-volume-management-in-ubuntu/
https://www.howtogeek.com/school/using-windows-admin-tools-like-a-pro/lesson2/
https://www.howtogeek.com/howto/17001/how-to-format-a-usb-drive-in-ubuntu-using-gparted/

Question No : 2

A company is reviewing options for its current disaster recovery plan and potential changes to it. The security team will not allow customer data to egress to non-company equipment, and the company has requested recovery in the shortest possible time.
Which of the following will BEST meet these goals?

A.A warm site
B.A hot site
C.Cloud recovery
D.A cold site

정답:
Explanation:
A hot site is a type of disaster recovery site that has all the equipment and data ready to resume operations as soon as possible after a disaster. A hot site is usually located in a different geographic area than the primary site and has redundant power, cooling, network, and security systems. A hot site is best for the company that wants to recover in the shortest possible time and does not want customer data to egress to non-company equipment. A warm site is a type of disaster recovery site that has some equipment and data ready, but requires some configuration and restoration before resuming operations. A cold site is a type of disaster recovery site that has only basic infrastructure and space available, but requires significant setup and installation before resuming operations. Cloud recovery is a type of disaster recovery service that uses cloud-based resources and platforms to store backups and restore data and applications after a disaster.
Reference:
https://www.techopedia.com/definition/11172/hot-site
https://www.techopedia.com/definition/11173/warm-site
https://www.techopedia.com/definition/11174/cold-site
https://www.techopedia.com/definition/29836/cloud-recovery

Question No : 3

A server administrator added a new drive to a server. However, the drive is not showing up as available.
Which of the following does the administrator need to do to make the drive available?

A.Partition the drive.
B.Create a new disk quota.
C.Configure the drive as dynamic.
D.Set the compression.

정답:
Explanation:
To make a new drive available on a server, the administrator needs to partition the drive first. Partitioning is a process that divides the drive into one or more logical sections that can be formatted and assigned drive letters or mount points. Partitioning can be done using tools such as Disk Management on Windows or fdisk on Linux. Creating a new disk quota would not help, as disk quotas are used to limit the amount of disk space that users or groups can use on a partition. Configuring the drive as dynamic would not help either, as dynamic disks are used to create volumes that span multiple disks or use RAID features. Setting the compression would not help, as compression is used to reduce the size of files on a partition.
Reference:
https://www.howtogeek.com/school/using-windows-admin-tools-like-a-pro/lesson2/
https://www.howtogeek.com/howto/17001/how-to-format-a-usb-drive-in-ubuntu-using-gparted/

Question No : 4

Which of the following BEST measures now much downtime an organization can tolerate Curing an unplanned outage?

A.SLA
B.BIA
C.RTO
D.MTTR

정답:
Explanation:
RTO (Recovery Time Objective) is a measure of how much downtime an organization can tolerate during an unplanned outage. It is the maximum time allowed for restoring normal operations after a disaster. RTO is one of the key metrics for disaster recovery planning and testing. SLA (Service Level Agreement) is a contract that defines the expected level of service and performance between a provider and a customer. BIA (Business Impact Analysis) is a process that identifies and evaluates the potential effects of a disaster on critical business functions and processes. MTTR (Mean Time To Repair) is a measure of how long it takes to fix a failed component or system.
Reference:
https://parachute.cloud/rto-vs-rpo/
https://www.techopedia.com/definition/13622/service-level-agreement-sla
https://www.techopedia.com/definition/1032/business-impact-analysis-bia
https://www.techopedia.com/definition/8239/mean-time-to-repair-mttr

Question No : 5

An administrator is investigating a physical server mat will not Boot into the OS. The server has three hard drives configured in a RAID 5 array. The server passes POST, out the OS does not load. The administrator verities the CPU and RAM are Doth seated correctly and checks the dual power supplies. The administrator then verifies all the BIOS settings are correct and connects a bootable USB drive in the server, and the OS loads correctly.
Which of the following is causing the issue?

A.The page file is too small.
B.The CPU has failed.
C.There are multiple failed hard drives.
D.There are mismatched RAM modules.
E.RAID 5 requires four drives

정답:
Explanation:
If a server has three hard drives configured in a RAID 5 array, it means that the data is striped across all three drives with parity information. RAID 5 can tolerate one drive failure without losing data, but not two or more. If there are multiple failed hard drives, the RAID 5 array will become corrupted and the OS will not load. The other options are not likely to cause the issue, as the server passes POST, the CPU and RAM are seated correctly, the BIOS settings are correct, and the OS loads from a bootable USB drive. RAID 5 does not require four drives, it can work with three or more.
Reference: https://www.technewstoday.com/what-is-a-raid-5/

Question No : 6

Which of the following techniques can be configured on a server for network redundancy?

A.Clustering
B.Vitalizing
C.Cloning
D.Teaming

정답:
Explanation:
Teaming is a technique that can be configured on a server for network redundancy. Teaming involves combining two or more network adapters into a single logical unit that acts as one network interface. This way, if one network adapter fails, another one can take over without disrupting network connectivity. Teaming can also improve network performance by load balancing traffic across multiple network adapters. Clustering is a technique that involves grouping two or more servers together to act as one system for high availability and fault tolerance. Virtualizing is a technique that involves creating multiple virtual machines on a single physical server to optimize resource utilization and flexibility. Cloning is a technique that involves creating an exact copy of a server’s configuration and data for backup or migration purposes.
Reference:
https://docs.microsoft.com/en-us/windows-server/networking/technologies/nic-teaming/nic-teaming
https://www.techopedia.com/definition/19588/clustering
https://www.techopedia.com/definition/4790/virtualization
https://www.techopedia.com/definition/4776/cloning

Question No : 7

Users cannot access a new server by name, but the server does respond to a ping request using its IP address. All the user workstations receive their IP information from a DHCP server.
Which of the following would be the best step to perform NEXT?

A.Run the tracert command from a workstation.
B.Examine the DNS to see if the new server record exists.
C.Correct the missing DHCP scope.
D.Update the workstation hosts file.

정답:
Explanation:
If users cannot access a new server by name, but the server does respond to a ping request using its IP address, it means that there is a problem with name resolution. The DNS (Domain Name System) is a service that maps hostnames to IP addresses and vice versa. Therefore, the best step to perform next is to examine the DNS to see if the new server record exists and matches its IP address. If not, the DNS record needs to be added or updated accordingly. Running the tracert command from a workstation would not help with name resolution, as it only shows the route taken by packets to reach a destination by IP address. Correcting the missing DHCP scope would not help either, as DHCP (Dynamic Host Configuration Protocol) only assigns IP addresses and other network settings to clients, but does not resolve names. Updating the workstation hosts file would be a temporary workaround, but not a permanent solution, as it would require manually editing every workstation’s hosts file with the new server’s name and IP address.
Reference: https://www.howtogeek.com/164981/how-to-use-nslookup-to-check-domain-name-information-in-microsoft-windows/ https://www.howtogeek.com/howto/27350/beginner-geek-how-to-edit-your-hosts-file/

Question No : 8

A company wants to deploy software to all users, Out very few of men will be using the software at any one point in time.
Which of the following licensing models would be BEST lot the company?

A.Per site
B.Per concurrent user
C.Per core
D.Per instance

정답:
Explanation:
Per concurrent user licensing is a model that allows a fixed number of users to access the software at any one point in time. This model is best for the company that wants to deploy software to all users, but very few of them will be using the software at any one point in time. This way, the company can save money by paying only for the number of simultaneous users, rather than for every user who has access to the software. Per site licensing is a model that allows unlimited users within a specific location to use the software. Per core licensing is a model that charges based on the number of processor cores on the server where the software is installed. Per instance licensing is a model that charges based on the number of copies of the software running on different servers or virtual machines.
Reference:
https://www.pcmag.com/encyclopedia/term/concurrent-use-license https://www.techopedia.com/definition/1440/software-licensing

Question No : 9

A server has experienced several component failures. To minimize downtime, the server administrator wants to replace the components while the server is running.
Which of the following can MOST likely be swapped out while the server is still running? (Select TWO).

A.The power supply
B.The CPU
C.The hard drive
D.The GPU
E.The cache
F.The RAM

정답:
Explanation:
The power supply and the hard drive are two components that can most likely be swapped out while the server is still running, if they support hot swapping or hot plugging. Hot swapping or hot plugging means that the device can be added or removed without shutting down the system. The operating system automatically recognizes the changes that have been made. This feature is useful for minimizing downtime and improving availability. The CPU, the GPU, the cache, and the RAM are not hot swappable and require the system to be powered off before replacing them.
Reference:
https://www.geeksforgeeks.org/what-is-hot-swapping/
https://www.howtogeek.com/268249/what-is-hot-swapping-and-what-devices-support-it/

Question No : 10

A server technician notices a server is very low on disk space. Upon inspecting the disk utilization, the technician discovers server logs are taxing up a large amount of space. There is no central log server.
Which of the following would help free up disk space?

A.Log rotation
B.Log shipping
C.Log alerting
D.Log analysis

정답:
Explanation:
Log rotation is a process that periodically renames, compresses, and deletes old log files to free up
disk space and keep log files manageable. Log rotation can be configured using tools such as logrotate or cron on Linux systems, or using Windows Task Scheduler or PowerShell scripts on Windows systems. Log rotation can also help with log analysis and troubleshooting by making it easier to find relevant information in smaller and more recent log files.
Reference:
https://www.mezmo.com/learn-log-management/what-is-log-rotation-how-does-it-work
https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/logman

Question No : 11

Users have noticed a server is performing below Baseline expectations. While diagnosing me server, an administrator discovers disk drive performance has degraded. The administrator checks the diagnostics on the RAID controller and sees the battery on me controller has gone bad.
Which of the following is causing the poor performance on the RAID array?

A.The controller has disabled the write cache.
B.The controller cannot use all the available channels.
C.The drive array is corrupt.
D.The controller has lost its configuration.

정답:
Explanation:
The write cache is a feature of some RAID controllers that allows them to temporarily store data in a fast memory buffer before writing it to the disk drives. This improves the performance and efficiency of write operations, especially for random and small writes. However, if the battery on the controller goes bad, the controller may disable the write cache to prevent data loss in case of a power failure.
This can degrade the disk drive performance significantly, as every write operation will have to wait for the disk drives to complete.
Reference:
https://www.dell.com/support/kbdoc/en-us/000131486/understanding-raid-controller-battery-learn-cycle
https://www.techrepublic.com/article/understanding-raid-controller-write-cache/

Question No : 12

An administrator needs to disable root login over SSH.
Which of the following tiles should be edited to complete this task?

A./root.ssh/sshd/config
B./etc.ssh/sshd_config
C./root/.ssh/ssh_config
D./etc.sshs_shd_config

정답:
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.
Reference: https://www.howtogeek.com/828538/how-and-why-to-disable-root-login-over-ssh-on-linux/

Question No : 13

A server administrator has connected a new server to the network. During testing, the administrator discovers the server is not reachable via server but can be accessed by IP address.
Which of the following steps should the server administrator take NEXT? (Select TWO).

A.Check the default gateway.
B.Check the route tables.
C.Check the hosts file.
D.Check the DNS server.
E.Run the ping command.
F.Run the tracert command

정답:
Explanation:
If the server is not reachable by name but can be accessed by IP address, it means that there is a problem with name resolution. The hosts file and the DNS server are both responsible for mapping hostnames to IP addresses. Therefore, the server administrator should check these two files for any errors or inconsistencies that might prevent the server from being resolved by name.
Reference:
https://www.howtogeek.com/662249/how-to-edit-the-hosts-file-on-linux/
https://www.howtogeek.com/164981/how-to-use-nslookup-to-check-domain-name-information-in-microsoft-windows/

Question No : 14

A system administrator has been alerted to a zero-day vulnerability that is impacting a service enabled on a server OS.
Which of the following would work BEST to limit an attacker from exploiting this vulnerability?

A.Installing the latest patches
B.Closing open ports
C.Enabling antivirus protection
D.Enabling a NIDS

정답:
Explanation:
The best way to limit an attacker from exploiting a zero-day vulnerability that is impacting a service enabled on a server OS is to install the latest patches. Patches are updates that fix bugs, improve security, or add features to software. Installing patches can help prevent attackers from exploiting known vulnerabilities that have been fixed by the software vendor. A zero-day vulnerability is a vulnerability that is unknown to the vendor or the public until it is exploited by an attacker. Therefore, installing patches as soon as they are available can reduce the window of opportunity for attackers to exploit zero-day vulnerabilities.
Reference: https://www.ibm.com/cloud/learn/patch-management

Question No : 15

A remote physical server is unable to communicate to the network through the available NICs, which were misconfigured. However, the server administrator is still able to configure the server remotely.
Which of the following connection types is the server administrator using to access the server?

A.Out-of-band management
B.Crash cart access
C.Virtual administrator console
D.Local KVM setup
E.RDP connection

정답:
Explanation:
The connection type that the server administrator is using to access the server remotely is out-of-band management. Out-of-band management is a method of accessing and controlling a server through a dedicated network interface or port that is separate from the regular data network. Out-of-band management allows administrators to perform tasks such as rebooting, configuring, troubleshooting, or updating a server even if the server is offline or unresponsive through the regular network. Out-of-band management can use protocols such as IPMI, iLO, DRAC, or BMC.
Reference: https://www.ibm.com/cloud/learn/out-of-band-management

CompTIA SK0-005 시험