CompTIA CompTIA Certifications SK0-005 Questions & Answers

• Question 121:

  A backup application is copying only changed files each time it runs. During a restore, however, only a single file is used. Which of the following backup methods does this describe?

  A. Open file

  B. Synthetic full

  C. Full incremental

  D. Full differential

  Correct Answer: B

  This is the best description of a synthetic full backup method because it creates a full backup by combining previous incremental backups with the latest backup. An incremental backup copies only the files that have changed since the last backup, while a full backup copies all the files. A synthetic full backup reduces the storage space and network bandwidth required for backups, while also simplifying the restore process by using a single file. References: https://www.veritas.com/support/en_US/doc/129705091-129705095-0/br731_wxrt-tot_v131910378-129705095

• Question 122:

  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.

  Correct Answer: B

• Question 123:

  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 turn on. There are two arrays on the failed server: a two-drive RAID 0 set for the OS, and an eight-drive RAID 10 set for data.

  Which of the following failure scenarios MOST likely occurred?

  A. A drive failed in the OS array.

  B. A drive failed and then recovered in the data array.

  C. A drive failed in both of the arrays.

  D. A drive failed in the data array.

  Correct Answer: A

  If a server has two arrays on the failed server: a two-drive RAID 0 set for the OS, and an eight-drive RAID 10 set for data, then the most likely failure scenario that caused the server to crash and not boot is that a drive failed in the OS array. RAID 0 is a RAID configuration that stripes data across two or more drives without parity or redundancy. RAID 0 offers high performance but no fault tolerance. If one drive fails in RAID 0, all data is lost and the system cannot boot. RAID 10 is a RAID configuration that combines disk mirroring and disk striping with parity. RAID 10 offers high performance and fault tolerance. RAID 10 can tolerate up to one drive failure per mirrored pair without losing data or functionality.

  References: https://www.technewstoday.com/what-is-a-raid-0/ https://www.technewstoday.com/what-is-a-raid-10/

• Question 124:

  A junior administrator needs to configure a single RAID 5 volume out of four 200GB drives attached to the server using the maximum possible capacity. Upon completion, the server reports that all drives were used, and the approximate volume size is 400GB.

  Which of the following BEST describes the result of this configuration?

  A. RAID 0 was configured by mistake.

  B. RAID 5 was configured properly.

  C. JBOD was configured by mistake.

  D. RAID 10 was configured by mistake.

  Correct Answer: B

  The result of configuring a single RAID 5 volume out of four 200GB drives attached to the server using the maximum possible capacity would be a RAID 5 configuration properly set up.

  RAID 5 is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both. It uses block-level striping with distributed parity to achieve redundancy while improving performance by spreading data over multiple disks. In this case, using four 200GB drives in a RAID 5 configuration with block-level striping and distributed parity, the total available capacity would be approximately 600GB (400GB usable), which is the sum of the capacity of three drives minus

  the capacity of one drive (i.e., 3 x 200GB = 600GB - 200GB = 400GB). Therefore, the correct answer is B. RAID 5 was configured properly.

• Question 125:

  A technician is monitoring a server and notices there is only one NIC plugged in, but the server has two. The NIC is oversaturated, and the technician would like to increase the available bandwidth. Which of the following solutions would be the BEST option to increase the speed of this NIC?

  A. Link aggregation

  B. Heartbeat

  C. Most recently used

  D. Active-active

  Correct Answer: A

  This is the best solution to increase the speed of the NIC because link aggregation is a technique that combines multiple physical network interfaces into a single logical interface. This can increase the bandwidth, redundancy, and load balancing of network traffic. Link aggregation requires both the server and the switch to support it and be configured accordingly. References: https://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html

• Question 126:

  An administrator is troubleshooting performance issues on a server that was recently upgraded. The administrator met with users/stakeholders and documented recent changes in an effort to determine whether the server is better or worse since the changes.

  Which of the following would BEST help answer the server performance question?

  A. Server performance thresholds

  B. A server baseline

  C. A hardware compatibility list

  D. An application service-level agreement

  Correct Answer: B

  A server baseline is a set of metrics that represents the normal performance and behavior of a server under a specific workload and configuration. A server baseline can help answer the server performance question by comparing the current

  performance with the previous performance before the upgrade. This can help identify any changes or issues that may have affected the server performance.

  References:

  https://www.comptia.org/training/resources/exam-objectives/comptia-server-sk0-005-exam-objectives (Objective 4.2)

• Question 127:

  An administrator is investigating several unexpected documents and video files that recently appeared in a network share. The administrator checks the properties of the files and sees the author's name on the documents is not a company employee. The administrator questions the other users, but no one knows anything about the files. The administrator then checks the log files and discovers the FTP protocol was used to copy the files to the server.

  Which of the following needs to be done to prevent this from happening again?

  A. Implement data loss prevention.

  B. Configure intrusion detection.

  C. Turn on User Account Control.

  D. Disable anonymous access.

  Correct Answer: D

  D. Disable anonymous access.

  The fact that the FTP protocol was used to copy the files to the server suggests that the network share has anonymous access enabled. Disabling anonymous access would require users to authenticate before accessing the share, which would prevent unauthorized access and file transfers from external sources.

  Data loss prevention (A) and intrusion detection (B) are both important security measures, but they may not necessarily prevent unauthorized access to a network share. User Account Control (C) is a feature in Windows that helps prevent unauthorized changes to a computer, but it is not directly related to preventing unauthorized access to a network share. Therefore, the best option in this scenario would be to disable anonymous access.

• Question 128:

  Which of the following BEST describes a guarantee of the amount of time it will take to restore a downed service?

  A. RTO

  B. SLA

  C. MTBF

  D. MTTR

  Correct Answer: A

  The guarantee of the amount of time it will take to restore a downed service is typically referred to as the "RTO" or "Recovery Time Objective." RTO is the amount of time within which a system, application, or service must be restored after a

  disruption in order to avoid unacceptable consequences associated with a break in business continuity.

  Option A, RTO, is the correct answer.

  Option B, SLA (Service Level Agreement), is an agreement between a service provider and its customers that defines the level of service, availability, and other aspects of the service that the provider agrees to deliver.

  Option C, MTBF (Mean Time Between Failures), is the average time that elapses between failures of a system, component, or product.

  Option D, MTTR (Mean Time To Repair), is the average time it takes to repair a system, component, or product after a failure has occurred.

• Question 129:

  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.

  Correct Answer: C

• Question 130:

  A server administrator is trying to determine the cause of a slowdown on a database server. Upon investigation, the administrator determines the issue is in the storage subsystem. Which of the following will MOST likely resolve this issue?

  A. Increasing IOPS by implementing flash storage

  B. Implementing deduplication on the storage

  C. Extending capacity by installing a 4TB SATA disk

  D. Reformatting the disk as FAT32

  Correct Answer: A