CompTIA CompTIA Certifications SK0-005 Questions & Answers

• Question 291:

  Which of the following is the BEST action to perform before applying patches to one of the hosts in a high availability cluster?

  A. Disable the heartbeat network.

  B. Fallback cluster services.

  C. Set the cluster to active-active.

  D. Failover all VMs.

  Correct Answer: D

  This is the best action to perform before applying patches to one of the hosts in a high availability cluster. A high availability cluster is a group of hosts that act like a single system and provide continuous uptime. A high availability cluster is often used for load balancing, backup, and failover purposes. Failover is a process of transferring workloads from one host to another in case of a failure or maintenance. By failing over all VMs (Virtual Machines) from the host that needs to be patched to another host in the cluster, the technician can ensure that there is no downtime or data loss during the patching process. Disabling the heartbeat network is not a good action to perform, as this would disrupt the communication and synchronization between the hosts in the cluster. Fallback cluster services is not a valid term, but it may refer to restoring cluster services after a failover, which is not relevant before applying patches. Setting the cluster to active- active is not a good action to perform, as this would increase the load on both hosts and reduce redundancy.

  References: https://www.howtogeek.com/190014/virtualization-basics-understanding-techniques-and-fundamentals/ https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/

• Question 292:

  Which of the following BEST describes a disaster recovery site with a target storage array that receives replication traffic and servers that are only powered on In the event of a disaster?

  A. Cloud

  B. Cold

  C. Hot

  D. Warm

  Correct Answer: D

  A warm site is a type of disaster recovery site that has a target storage array that receives replication traffic and servers that are only powered on in the event of a disaster. A warm site is a compromise between a hot site and a cold site. A warm site has some equipment and data ready, but requires some configuration and restoration before resuming operations. A warm site is usually located in a different geographic area than the primary site and has redundant power, cooling, network, and security systems. A warm site is suitable for organizations that can tolerate some downtime and data loss in case of a disaster. A cloud site is a type of disaster recovery site that uses cloud-based resources and platforms to store backups and restore data and applications after a disaster. 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. 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.

  References: 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 293:

  A USB drive has been purchased to move files between Windows, *nix, and Macintosh servers. Which of the following filesystems is the BEST choice to ensure the drive can read and be written to by all of the servers?

  A. ext2

  B. FAT32

  C. NTFS

  D. UFS

  Correct Answer: B

• Question 294:

  A systems administrator is attempting to connect via RDP to a server that is running Windows. However, the systems administrator cannot connect to the machine via RDP to reboot it and apply updates. Which of the following methods should be used to access the machine and perform a reboot if the server is not physically accessible?

  A. ILO/iDRAC

  B. TCP/IP

  C. SSH/SCP

  D. VNC/VPN

  Correct Answer: A

• Question 295:

  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

  Correct Answer: B

  This option means blocking or disabling the network ports used by the service affected by the zero-day vulnerability. Closing open ports can work best to limit an attacker from exploiting the zero-day vulnerability, as it can prevent or reduce the exposure of the service to the network and reduce the attack surface. Closing open ports can also help to isolate the host from potential attacks and minimize the impact on other hosts or systems in the cluster.

• Question 296:

  Hosting data in different regional locations but not moving it for long periods of time describes:

  A. a cold site.

  B. data at rest.

  C. on-site retention.

  D. off-site storage.

  Correct Answer: A

• Question 297:

  An administrator recommends using a tower server in a small remote office. Which of the following should be added to the server to ensure continuous server operation?

  A. Surge protector

  B. PDU

  C. UPS

  D. Ground strap

  Correct Answer: C

• Question 298:

  A Linux administrator created a script that will run at startup. After successfully writing the script, the administrator received me following output when trying to execute the script:

  Bash ./startup,sh:Permission denied

  Which of the following commands would BEST resolve the error message?

  A. Chmod +w startup.sh

  B. Chmod 444 startup.sh

  C. Chmod+x startup.sh

  D. Chmod 466 startUp,sh

  Correct Answer: C

  This is the command that would best resolve the error message "Bash ./startup.sh: Permission denied" when trying to execute a script on Linux. Chmod is a command that changes the permissions of files or directories on Linux. +x is an option that adds the execute permission to the file or directory for the owner, group, and others. startup.sh is the name of the script file that needs to be executed. By running chmod +x startup.sh, the technician grants execute permission to the script file and allows it to be run by any user. Chmod +w startup.sh would add write permission to the file, but not execute permission. Chmod 444 startup.sh would set read-only permission for all users, but not execute permission. Chmod 466 startup.sh would set read and write permission for the owner and write-only permission for group and others, but not execute permission. References: https://www.howtogeek.com/437958/how-to-use-the-chmod-command-on-linux

• Question 299:

  Users ate experiencing issues when trying to access resources on multiple servers. The servers are virtual and run on an ESX server. A systems administrator is investigating but is unable to connect to any of the virtual servers. When the administrator connects to the host, a purple screen with while letters appears. Which of the following troubleshooting steps should the administrator perform FIRST?

  A. Check the power supplies

  B. Review the log files.

  C. Reinstall the ESX server.

  D. Reseat the processors.

  Correct Answer: B

  A purple screen with white letters on an ESX server indicates a kernel panic, which is a fatal error that causes the system to crash and stop functioning3. The first troubleshooting step that an administrator should perform is to review the log files, which may contain information about the cause of the error, such as hardware failures, software bugs, or configuration issues4. Checking the power supplies (A) may not be relevant, as the system is still displaying a screen. Reinstalling the ESX server ?or reseating the processors (D) are drastic measures that may result in data loss or further damage, and should only be attempted after ruling out other possible causes. References: https://kb.vmware.com/s/article/1014508 https://www.altaro.com/vmware/vmware-esxi-purple-screen-death/

• Question 300:

  A systems administrator is trying to run a program on the server to query the database. When attempting to launch the program, the screen flashes and the program closes. Which of the following should the technician do to get the program to open correctly? (Choose two.)

  A. Launch the program running as the administrator.

  B. Check HIPS logs to see if the application is blocked.

  C. Log on to the server as the backup administrator.

  D. Log on to the server as the database administrator.

  E. Stop the database and restart the server.

  Correct Answer: AB