QUESTION: 137

A company stores extremely sensitive data on an alt-gapped system.
Which of the following can Be Implemented to increase security against a potential insider threat?

Two-person Integrity
SSO
SIEM
Faraday cage
MFA

Answer(s): A

Explanation:

Two-person integrity is a security measure that can be implemented to increase security against a potential insider threat on an air-gapped system. An air-gapped system is a system that is isolated from any network connection and can only be accessed physically. An insider threat is a malicious actor who has authorized access to an organization's system or data and uses it for unauthorized or harmful purposes. Two-person integrity is a system of storage and handling that requires the presence of at least two authorized persons, each capable of detecting incorrect or unauthorized security procedures, for accessing certain sensitive data or material. This way, no single person can compromise the security or integrity of the data or material without being noticed by another person. SSO (Single Sign-On) is a feature that allows users to access multiple applications or systems with one set of credentials, but it does not prevent insider threats. SIEM (Security Information and Event Management) is a tool that collects and analyzes log data from various sources to detect and respond to security incidents, but it does not work on air-gapped systems. A Faraday cage is a structure that blocks electromagnetic signals from entering or leaving, but it does not prevent physical access or insider threats. MFA (Multi-Factor Authentication) is a method that requires users to provide two or more pieces of evidence to verify their identity, such as something they know, something they have, or something they are, but it does not prevent insider threats.

Reference:

https://www.howtogeek.com/169080/air-gap-how-to-isolate-a-computer-to-protect-it-from- hackers/ https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it- matter/ https://www.howtogeek.com/202794/what-is-the-difference-between-127.0.0.1-and- 0.0.0.0/ https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable- devices-and-individual-files/

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QUESTION: 138

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?

Chmod +w startup.sh
Chmod 444 startup.sh
Chmod+x startup.sh
Chmod 466 startUp,sh

Answer(s): C

Explanation:

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.

Reference:

https://www.howtogeek.com/437958/how-to-use-the-chmod-command-on-linux

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QUESTION: 139

A technician is checking a server rack. Upon entering the room, the technician notices the tans on a particular server in the rack are running at high speeds. This is the only server in the rack that is experiencing this behavior. The ambient temperature in the room appears to be normal.
Which of the following is the MOST likely reason why the fans in that server are operating at full speed?

The server is In the process of shutting down, so fan speed operations have been defaulted to high.
An incorrect fan size was inserted into the server, and the server has had to Increase the fan speed to compensate.
A fan failure has occurred, and the other fans have increased speed to compensate.
The server is utilizing more memory than the other servers, so it has increased the fans to compensate.

Answer(s): C

Explanation:

This is the most likely reason why the fans in that server are operating at full speed while the ambient temperature in the room is normal and the other servers in the rack are not experiencing this behavior. A fan failure is a situation where one or more fans in a server stop working or malfunction due to wear and tear, dust, or other factors. This can cause overheating and performance issues on the server. To prevent this, most servers have a fan redundancy feature that allows the other fans to increase their speed and airflow to compensate for the failed fan and maintain a safe temperature level. The server is not likely to be in the process of shutting down, as this would not cause the fans to run at high speeds. An incorrect fan size is not likely to be inserted into the server, as most fans are standardized and compatible with the server chassis and motherboard. The server is not likely to be utilizing more memory than the other servers, as this would not cause a significant increase in temperature or fan speed.

Reference:

https://www.howtogeek.com/303282/how-to-manage-your-pcs-fans-for-optimal-airflow-and- cooling/ https://www.howtogeek.com/174288/how-to-tell-if-your-computer-is-overheating-and- what-to-do-about-it/

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QUESTION: 140

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

Disable the heartbeat network.
Fallback cluster services.
Set the cluster to active-active.
Failover all VMs.

Answer(s): D

Explanation:

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.

Reference:

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/

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