CompTIA SK0-005 Online Practice Questions and Exam Preparation

CompTIA SK0-005 Online Questions & Answers

• Question 21:

  A server administrator is tasked with ensuring that information stored on company database systems is secure from bad actors. Which of the following security practices would accomplish this task?

  A. Encryption at rest
  B. Audit logging
  C. BIOS password
  D. Signal blocking
  A. Encryption at rest

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  Explanation

• Question 22:

  The accounting department needs more storage and wants to retain the current data for quick read-write access. The accounting server does not have any internet drive bays available to keep both disks however the server does have USB 3 0 and eSATA ports available. Which of the following is the BEST way to accomplish the department's goals?

  A. Copy the existing data to an external USB 3 0 enclosure.
  B. Place the existing data on a DVD and use the internal DVD-ROM drive.
  C. Transfer the existing data to an external eSATA enclosure.
  D. Move the existing data to a new. larger internal hard drive.
  C. Transfer the existing data to an external eSATA enclosure.

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  Explanation

  The best way to accomplish the department's goals is to transfer the existing data to an external eSATA enclosure, which is a device that connects an external hard drive to a computer using an eSATA port. This will allow the accounting department to retain the current data for quick read-write access, as eSATA provides high-speed data transfer rates and supports hot-plugging. Unlike USB 3.0, eSATA does not share bandwidth with other devices, which can improve performance and reliability. Verified

  References: [eSATA vs USB 3.0]

• Question 23:

  A technician noted the RAID hard drives were functional while troubleshooting a motherboard failure. The technician installed a spare motherboard with similar specifications and used the original components. Which of the following should the technician do to restore operations with minimal downtime?

  A. Reinstall the OS and programs.
  B. Configure old drives to RAID.
  C. Reconfigure the RAID.
  D. Install from backup.
  C. Reconfigure the RAID.

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  Explanation

• Question 24:

  A server administrator receives a report that Ann, a new user, is unable to save a file to her home directory on a server. The administrator checks Ann's home directory permissions and discovers the following:

  dr-xr-xr-- /home/Ann

  Which of the following commands should the administrator use to resolve the issue without granting unnecessary permissions?

  A. chmod 777 /home/Ann
  B. chmod 666 /home/Ann
  C. chmod 711 /home/Ann
  D. chmod 754 /home/Ann
  D. chmod 754 /home/Ann

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  Explanation

  The administrator should use the command chmod 754 /home/Ann to resolve the issue without granting unnecessary permissions.The chmod command is used to change the permissions of files and directories on a Linux server. The permissions are represented by three numbers, each ranging from 0 to 7, that correspond to the read ? write (w), and execute (x) permissions for the owner, group, and others respectively. The numbers are calculated by adding up the values of each permission: r = 4, w = 2, x = 1. For example, 7 means rwx (4 + 2 + 1), 6 means rw- (4 + 2), 5 means r-x (4 + 1), etc. In this case, Ann's home directory has the permissions dr-xr-xr? which means that only the owner (d) can read ?and execute (x) the directory, and the group and others can only read ?and execute (x) but not write (w) to it. This prevents Ann from saving files to her home directory. To fix this issue, the administrator should grant write permission to the owner by using chmod 754 /home/Ann, which means that the owner can read ? write (w), and execute (x) the directory, the group can read ?and execute (x) but not write (w) to it, and others can only read ?but not write (w) or execute (x) it. This way, Ann can save files to her home directory without giving unnecessary permissions to others.

  https://linuxize.com/post/what-does-chmod-777-mean/

• Question 25:

  Which of the following backup types should be chosen for database servers?

  A. Differential
  B. Incremental
  C. Synthetic full
  D. Open file
  C. Synthetic full

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  Explanation

  A synthetic full backup is a type of backup that combines a full backup with one or more incremental backups to create a new full backup without accessing the source data. This type of backup is suitable for database servers, as it reduces the backup window, minimizes the impact on the server performance, and provides faster recovery time. Verified

  References: [Synthetic Full Backup]

• Question 26:

  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.
  B. Purchase matching hardware and clone the disk.

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  Explanation

• Question 27:

  Which of the following backup methods protects all the changes that have occurred since the last full backup?

  A. Incremental
  B. Archive
  C. Differential
  D. Snapshot
  C. Differential

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  Explanation

• Question 28:

  A systems administrator needs to create a data volume out of four disks with the MOST redundancy. Which of the following is the BEST solution?

  A. RAID 0
  B. RAID 1
  C. RAID 5
  D. RAID 6
  D. RAID 6

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  Explanation

  RAID 6 is a type of RAID level that uses two parity blocks to provide fault tolerance and redundancy for data storage. RAID 6 can withstand the failure of up to two disks in the array without losing any data. RAID 6 requires a minimum of four disks to operate, and it distributes the data and parity blocks across all the disks in the array. RAID 6 has a high write penalty, which means that it takes more time and resources to write data to the disks than to read data from them. However, RAID 6 offers a highlevel of data protection and reliability, which makes it suitable for applications that require high availability and durability1. RAID 1 provides redundancy and fault tolerance by mirroring the data from one disk to another disk. RAID 1 offers high read performance and data security, but it has low capacity and write performance. RAID 1 requires a minimum of two disks to operate, and it can only tolerate the failure of one disk in the array. If more than one disk fails, all the data in the array is lost2. RAID 5 provides redundancy and fault tolerance by using one parity block to store information that can be used to reconstruct the data in case of a disk failure. RAID 5 requires a minimum of three disks to operate, and it distributesthe data and parity blocks across all the disks in the array. RAID 5 offers a balance between performance, capacity, and data protection, but it can only tolerate the failure of one disk in the array. If more than one disk fails, all the data in the array is lost2. Therefore, among these options, RAID 6 is the best solution for creating a data volume out of four disks with the most redundancy.

• Question 29:

  Which of the following is a method that is used to prevent motor vehicles from getting too close to building entrances and exits?

  A. Bollards
  B. Reflective glass
  C. Security guards
  D. Security cameras
  A. Bollards

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  Explanation

  Bollards are an example of a method that is used to prevent motor vehicles from getting too close to building entrances and exits. Bollards are short, sturdy posts that are installed on sidewalks, parking lots, or roads to create physical barriers and control traffic flow. Bollards can be used to protect pedestrians, buildings, or other structures from vehicle collisions or attacks. Bollards can be made of various materials, such as metal, concrete, or plastic, and can be fixed, removable, or retractable.

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

• Question 30:

  A storage engineer responds to an alarm on a storage array and finds the battery on the RAID controller needs to be replaced. However, the replacement part will not be available for 14 days. The engineer needs to identify the impact of the failed battery on the system. Which of the following best describes the impact?

  A. The read and write performance will be impacted.
  B. The read performance will be impacted.
  C. The performance will not be impacted.
  D. The write performance will be impacted.
  D. The write performance will be impacted.

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  Explanation