A company recently experienced a security incident in which a USB drive containing malicious software was able to covertly install malware on a workstation_ Which of the
following actions should be taken to prevent this Incident from happening again? (Select two).
Correct Answer:
EF
The correct answers are E and F. Disabling AutoRun and updating the antivirus definitions are two actions that should be taken to prevent the incident from happening again.
AutoRun is a feature of Windows that automatically executes a predetermined action when a removable media such as a USB drive is inserted in a computer. For example, AutoRun can launch or install a new program on the media, or open the file in File Explorer. However, this feature can also be exploited by malicious software that can run without the user’s consent or knowledge. Therefore, disabling AutoRun can help prevent accidental installation of viruses and other malware from USB drives123.
Updating the antivirus definitions is another important action that can help prevent malware infections from USB drives. Antivirus definitions are files that contain information about the latest known threats and how to detect and remove them. By updating the antivirus definitions regularly, you can ensure that your antivirus software can recognize and block any malicious software that may be on the USB drive before it can harm your computer45. A host-based IDS is a system that monitors and analyzes the activity on a single computer or device for any signs of intrusion or malicious behavior. A host-based IDS can help detect and prevent malware infections from USB drives, but it is not a sufficient action by itself. A host-based IDS needs to be complemented by other security measures, such as disabling AutoRun and updating the antivirus definitions6.
Restricting login times, enabling a BIOS password, and updating the password complexity are all actions that can help improve the security of a computer or device, but they are not directly related to preventing malware infections from USB drives. These actions can help prevent unauthorized access to the computer or device, but they do not affect how the computer or device interacts with the USB drive or its contents.
Restricting user permissions is an action that can help limit the damage that malware can cause on a computer or device, but it does not prevent the malware from being installed in the first place. Restricting user permissions means limiting what actions a user can performon the computer or device, such as installing or deleting programs, modifying system settings, or accessing certain files or folders. By restricting user permissions, you can reduce the impact of malware infections by preventing them from affecting other users or system components7.
Which of the following commands can a technician use to get the MAC address of a Linux distribution?
Correct Answer:
B
The ifconfig command is a tool for configuring network interfaces that any Linux system administrator should know. It is used to bring interfaces up or down, assign and remove addresses and routes, manage ARP cache, and much more1. One of the information that ifconfig can display is the MAC address of each network interface, which is a unique identifier of the physical layer of the network device. The MAC address is usually shown as a hexadecimal string separated by colons, such as 00:0c:29:3f:5c:1f. To get the MAC address of a Linux distribution, a technician can use the ifconfig command without any arguments, which will show the details of all the active network interfaces, or specify the name of a particular interface, such as eth0 or wlan0, to show only the details of that interface.References1: Linux Commands - CompTIA A+ 220-1102 - 1.11 - Professor Messer IT Certification Training Courses1
A user's computer unexpectedly shut down immediately after the user plugged in a USB headset. Once the user turned the computer back on, everything was functioning properly, including the headset. Which of the following Microsoft tools would most likely be used to determine the root cause?
Correct Answer:
A
Event Viewer is a Microsoft tool that records and displays system events, errors, warnings, and information. Event Viewer can help troubleshoot and diagnose problems, such as unexpected shutdowns, by showing the details of what happened before, during, and after the incident. Event Viewer can also show the source of the event,such as an application, a service, a driver, or a hardware device. By using Event Viewer, a technician can identify the root cause of the unexpected shutdown, such as a power failure, a thermal event, a driver conflict, or a malware infection.
A developer's Type 2 hypervisor is performing inadequately when compiling new source code. Which of the following components should the developer upgrade to improve the hypervisor’s performance?
Correct Answer:
A
The correct answer is A. Amount of system RAM. A Type 2 hypervisor is a virtualization software that runs on top of a host operating system, which means it shares the system resources with the host OS and other applications. Therefore, increasing the amount of system RAM can improve the performance of the hypervisor and the virtual machines running on it. RAM is used to store data and instructions that are frequently accessed by the CPU, and having more RAM can reduce the need for swapping data to and from the storage device, which is slower than RAM.
NIC performance, storage IOPS, and dedicated GPU are not as relevant for improving the hypervisor’s performance in this scenario. NIC performance refers to the speed and quality of the network interface card, which is used to connect the computer to a network. Storage IOPS refers to the number of input/output operations per second that can be performed by the storage device, which is a measure of its speed and efficiency. Dedicated GPU refers to a separate graphics processing unit that can handle complex graphics tasks, such asgaming or video editing. These components may affect other aspects of the computer’s performance, but they are not directly related to the hypervisor’s ability to compile new source code.
A technician receives an invalid certificate error when visiting a website. Other workstations on the same local network are unable to replicate this issue. Which of the following is mostlikely causing the issue?
Correct Answer:
A
Date and time is the most likely cause of the issue. The date and time settings on a workstation affect the validity of the certificates used by websites to establish secure connections. If the date and time are incorrect, the workstation may not recognize the certificate as valid and display an invalid certificate error. Other workstations on the same local network may not have this issue if their date and time are correct. User access control, UEFI boot mode, and log-on times are not likely causes of the issue. User access control is a feature that prevents unauthorized changes to the system by prompting for confirmation or credentials. UEFI boot mode is a firmware interface that controls the boot process of the workstation. Log-on times are settings that restrict when a user can log in to the workstation. None of these factors affect the validity of the certificates used by websites. References:
✑ Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 14
✑ CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Cert Guide, page 456
