- (Topic 4)
A user dropped a laptop while it was turned on. The hard drive now makes a clicking sound, and the laptop will not start up. Which of the following most likely explains this
situation?
Correct Answer:
C
A clicking hard drive is usually a sign of a mechanical failure, where the read/write heads are not functioning properly or the platters are scratched or broken. This can be caused by physical shock, such as dropping the laptop while it was turned on. A damaged hard drive may not be able to boot up the operating system or access the data stored on it. This is a serious problem that requires data recovery and hard drive replacement.
References
Identifying Hard Drive Sounds and Determining What They Mean Hard Drive Clicking? See How to Fix Click Hard Drive On Your Own Chapter 3: Hardware
- (Topic 3)
An IT technician is inspecting the internal components of a desktop computer to assess a suspected power issue with the motherboard. Which of the following connectors should the IT technician inspect further?
Correct Answer:
D
The connector that the IT technician should inspect further is Molex. The Molex connector is used to provide power to the motherboard and other components in the computer. If there is a suspected power issue with the motherboard, the IT technician should inspect the Molex connector to ensure that it is properly connected and providing power to the motherboard1
- (Topic 3)
A virtual file server in the cloud is configured to automatically add compute resources during times of high load on the server. Which of the following describes this cloud feature?
Correct Answer:
C
Rapid elasticity is a cloud feature that allows cloud services to scale up or down automatically according to demand or load on the server, without requiring manual intervention or configuration changes by users or administrators.This enables cloud services to provide optimal performance and efficiency at all times, as well as reducing costs by only using resources when needed. Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 98)
- (Topic 4)
Which of the following technologies can be used to harden guest virtual machines?
Correct Answer:
D
A virtual Trusted Platform Module (vTPM) is a technology that can be used to harden guest virtual machines by providing them with a secure cryptographic device. A vTPM can store encryption keys, certificates, and passwords, and can perform integrity checks on the guest operating system and applications. A vTPM can also enable features such as BitLocker and Credential Guard in Windows 10 virtual machines.
* A. Containerization is a technology that can be used to isolate applications from the underlying operating system and hardware resources. Containerization does not directly harden guest virtual machines, but rather provides a lightweight alternative to virtualization.
* B. Network isolation is a technology that can be used to separate network traffic between
different virtual machines or groups of virtual machines. Network isolation can help prevent unauthorized access or attacks on guest virtual machines, but it does not harden them internally.
* C. Resource reservation is a technology that can be used to guarantee a minimum amount of CPU, memory, disk, or network resources for a virtual machine or a group of virtual machines. Resource reservation can help improve the performance and availability of guest virtual machines, but it does not harden them against security threats.
* D. vTPM is a technology that can be used to harden guest virtual machines by providing them with a secure cryptographic device. A vTPM can store encryption keys, certificates, and passwords, and can perform integrity checks on the guest operating system and applications.
Reference: CompTIA A+ Core 1 (220-1101) Certification Study Guide, page 3161.
- (Topic 1)
A user contacts the help desk in reference to a failing thumbprint scanner. The user states the scanner was functioning correctly yesterday. Which of the following troubleshooting steps should be performed FIRST after the ticket has been filed?
Correct Answer:
A
http://www.221021.com/Hardware/input-output-devices/32310.html
* 1. Identify the problem.
Gather information from the user, identify user changes, and, if applicable, perform backups before making changes.
Inquire regarding environmental or infrastructure changes.
* 2. Establish a theory of probable cause (question the obvious).
If necessary, conduct external or internal research based on symptoms.
* 3. Test the theory to determine the cause.
Once the theory is confirmed, determine the next steps to resolve the problem. If the theory is not confirmed, re-establish a new theory or escalate.
* 4. Establish a plan of action to resolve the problem and implement the solution. Refer to the vendor's instructions for guidance.
* 5. Verify full system functionality and, if applicable, implement preventive measures.
* 6. Document the findings, actions, and outcomes.
