CompTIA SK0-005 Online Practice Questions and Exam Preparation

CompTIA SK0-005 Online Questions & Answers

• Question 211:

  An administrator is only able to log on to a server with a local account. The server has been successfully joined to the domain and can ping other servers by IP address.

  Which of the following locally defined settings is MOST likely misconfigured?

  A. DHCP
  B. WINS
  C. DNS
  D. TCP
  C. DNS

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  Explanation

  Since the administrator is only able to log on to the server with a local account, it is likely that the server is having difficulty resolving domain names to IP addresses. This suggests that there may be a misconfiguration in the Domain Name System (DNS) settings on the server.

  DNS is responsible for translating domain names into IP addresses, which allows computers to locate resources on the network. If the DNS settings on the server are incorrect, the server may not be able to locate domain resources, including domain controllers, which would prevent the administrator from logging on with a domain account.

  DHCP (A) is responsible for assigning IP addresses to devices on the network, and WINS (B) is an older technology used to resolve NetBIOS names to IP addresses. Neither of these services are directly related to logging on to a server with a domain account. TCP (D) is a protocol used to establish connections between devices on a network, and is not likely to be the source of the issue in this scenario.

• Question 212:

  A new company policy requires that any data loss in excess of one hour is unacceptable in the event of a disaster. Which of the following concepts is being referred to in this policy?

  A. MTTR
  B. RTO
  C. RPO
  D. MTBF
  C. RPO

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  Explanation

  The Recovery Point Objective (RPO) refers to the maximum tolerable period in which data might be lost from an IT service due to a major incident. The policy mentioned in the question highlights that data loss exceeding one hour is unacceptable, directly relating to the RPO concept. RPO is critical in disaster recovery and business continuity planning, indicating the age of the files that must be recovered from backup storage for normal operations to resume without significant losses. MTTR (Mean Time To Repair), RTO (Recovery Time Objective), and MTBF (Mean Time Between Failures) are related concepts but do not specifically address the amount of data loss that can be tolerated.

• Question 213:

  In which of the following media rotation schemes are daily, weekly, and monthly backup media utilized in a first-in, first-out method?

  A. Waterfall
  B. Synthetic full
  C. Tower of Hanoi
  D. Grandfather-father-son
  D. Grandfather-father-son

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  Explanation

  Grandfather-father-son (GFS) is a common backup rotation scheme that uses daily, weekly, and monthly backup media in a first-in, first-out (FIFO) method. The daily backups are rotated on a 3-months basis using a FIFO system as above.

  The weekly backups are similarly rotated on a bi-yearly basis, and the monthly backups are rotated on an annual basis. The oldest backup media in each cycle are overwritten by the newest ones. This scheme provides multiple versions of

  backup data at different intervals, allowing for flexible restoration options. Waterfall is another name for GFS. Synthetic full is a backup method that combines an initial full backup with subsequent incremental backups to create a new full

  backup without transferring all data again. Tower of Hanoi is another backup rotation scheme that uses an algorithm based on moving disks between three pegs.

  References:

  https://en.wikipedia.org/wiki/Backup_rotation_scheme

• Question 214:

  A very old PC is running a critical, proprietary application in MS-DOS. Administrators are concerned about the stability of this computer. Installation media has been lost, and the vendor is out of business.

  Which of the following would be the BEST course of action to preserve business continuity?

  A. Perform scheduled chkdsk tests.
  B. Purchase matching hardware and clone the disk.
  C. Upgrade the hard disk to SSD.
  D. Perform quarterly backups.
  A. Perform scheduled chkdsk tests.

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  Explanation

• Question 215:

  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
  B. /etc.ssh/sshd_config

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  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/how-and- why-to-disable-root-login-over-ssh-on-linux/

• Question 216:

  An administrator is troubleshooting a RAID issue in a failed server. The server reported a drive failure, and then it crashed and would no longer boot. There are two arrays on the failed server: a two-drive RAIO 0 set tor the OS, and an eight-drive RAID 10 set for data. Which of the following failure scenarios MOST likely occurred?

  A. The UPS batteries were overcharged
  B. Redundant power supplies require 220V power
  C. Both power supplies were connected to the same power feed
  D. The power supplies were not cross-connected
  C. Both power supplies were connected to the same power feed

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  Explanation

• Question 217:

  An administrator discovers a Bash script file has the following permissions set in octal notation:

  Which of the following is the MOST appropriate command to ensure only the root user can modify and execute the script?

  A. chmod go-rwx
  B. chmod u=rwx
  C. chmod u+wx
  D. chmod g-rwx
  B. chmod u=rwx

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  Explanation

  The octal notation "777" represents full permissions (read, write, and execute) for the owner, group, and others. To ensure only the root user can modify and execute the script, we need to remove write and execute permissions for group and others while keeping the same permissions for the owner. Therefore, the most appropriate command would be:

  B. chmod u=rwx,g=,o= script_file

  This command sets the owner's permissions to read, write, and execute (u=rwx) while removing all permissions for the group (g=) and others (o=), effectively restricting modification and execution to the root user only.

• Question 218:

  A technician is setting up a repurposed server. The minimum requirements are 2TB while ensuring the highest performance and providing support for one drive failure. The technician has the following six drives available:

  500GB, 10,000rpm 600GB, 10,000rpm 500GB, 7,200rpm 500GB, 10,000rpm 600GB, 15,000rpm 600GB, 10,000rpm

  Which of the following drive selections should the technician utilize to best accomplish this goal?

  A. 1, 2, 4, and 6
  B. 1, 2, 3, 5, and 6
  C. 1, 2, 4, 5, and 6
  D. 1, 2, 3, 4, and 6
  C. 1, 2, 4, 5, and 6

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  Explanation

  The goal is to achieve 2TB total storage,high performance, and support for one drive failure. Using RAID 5 or RAID 10 can provide redundancy while maximizing performance. 1, 2, 4, 5, and 6 (Answer C): This selection includes the highest-

  capacity and highest-performance drives (600GB and 500GB at high RPM speeds). Using these drives will provide the necessary capacity (500GB + 600GB + 500GB + 600GB + 600GB = 2.8TB) and performance with one drive redundancy

  (RAID 5 or 10). Other options (A, B, D):These combinations either lack the necessary capacity or mix slower drives (7,200rpm), reducing overall performance.

  This topic is covered underSK0-005 Objective 1.5: Explain storage technologies and RAID configurations.

• Question 219:

  A company is implementing a check-in desk to heighten physical security. Which of the following access controls would be the most appropriate to facilitate this implementation?

  A. Security guards
  B. Security cameras
  C. Bollards
  D. An access control vestibule
  A. Security guards

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  Explanation

• Question 220:

  A systems administrator has several different types of hard drives. The administrator is setting up a NAS that will allow end users to see all the drives within the NAS. Which of the following storage types should the administrator use?

  A. RAID array
  B. Serial Attached SCSI
  C. Solid-state drive
  D. Just a bunch of disks
  D. Just a bunch of disks

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  Explanation