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CompTIA A+ Certification Exam: Core 1, also known as 220-1101, is an entry-level certification exam designed for IT professionals who want to start or advance their career in the IT industry. 220-1101 exam covers fundamental IT concepts, such as hardware, software, networking, mobile devices, security, and troubleshooting. 220-1101 exam is divided into two parts, Core 1 and Core 2, and this article will focus on Core 1.
CompTIA A+ Certification Exam: Core 1 (220-1101) is a fundamental certification exam for IT professionals who are looking to establish themselves in the IT industry. 220-1101 Exam covers a wide range of topics related to hardware, software, networking, mobile devices, and security. Passing 220-1101 exam will validate your knowledge and skills in these areas and help you kickstart your career in IT.
Free PDF Quiz 220-1101 - CompTIA A+ Certification Exam: Core 1 Fantastic Pdf Format
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CompTIA A+ Certification Exam: Core 1 Sample Questions (Q364-Q369):
NEW QUESTION # 364
Which of the following translates a hostname to IP addresses?
Answer: D
Explanation:
DNS stands for Domain Name System, which is a network service that translates hostnames to IP addresses.
Hostnames are human-readable names that identify devices or services on the Internet, such as www.google.
com or mail.yahoo.com. IP addresses are numerical identifiers that specify the location of devices or services on the Internet, such as 172.217.14.206 or 98.137.11.163. DNS allows users to access websites or services by using hostnames instead of IP addresses, which are easier to remember and type. DNS also allows hostnames to change their IP addresses without affecting the users, which can improve performance and security.
References: The following web search results provide more information about DNS and how it translates hostnames to IP addresses:
What is DNS? | How DNS Works | Cloudflare: This article explains the concept of DNS, its components, its functions, and its benefits.
Hostname vs. IP - address - Stack Overflow: This answer compares the differences between hostnames and IP addresses, and how DNS resolves them.
How DNS Works: Domain Name System(DNS): This article illustrates how DNS works with diagrams and examples.
NEW QUESTION # 365
A user reports that a computer will not turn on. The technician verifies the power cord and the outlet the computer are plugged into are both working properly. Which of the following is the hardware component that has MOST likely failed?
Answer: D
Explanation:
The power supply unit (PSU) is the component that converts AC power from the outlet to DC power for the computer. If the PSU fails, the computer will not turn on. The CPU, RAM, and GPU are not directly related to the power supply and would not prevent the computer from turning on.
NEW QUESTION # 366
A technician wants to stress test multiple applications while maintaining the ability to easily reset those environments back to the initial state. Which of the following is the best way to accomplish this task?
Answer: A
Explanation:
A sandbox is a virtual environment that allows testing or running applications without affecting the main system. A sandbox can isolate the applications from the rest of the system, preventing any unwanted changes, errors, or security risks. A sandbox can also be easily reset to the initial state, discarding any modifications or data generated by the applications12.
A sandbox is a useful tool for stress testing multiple applications, as it can:
*Simulate different scenarios and conditions for the applications, such as high load, low memory, network latency, etc.
*Monitor and measure the performance, stability, and resource consumption of the applications under stress.
*Compare and analyze the results of different applications or different versions of the same application.
*Identify and fix any bugs, errors, or vulnerabilities in the applications before deploying them to the main system.
NEW QUESTION # 367
A technician is troubleshooting Wi-Fi connection issues on a customer's laptop. The laptop connects but intermittently disconnects. The technician has already confirmed the wireless card is properly installed, the router settings are correct, and the wireless signal strength is normal. Which of the following should the technician investigate next?
Answer: B
Explanation:
The next thing that the technician should investigate is D. Radio frequency.
Radio frequency is the range of electromagnetic waves that are used to transmit wireless signals. Different devices and networks use different radio frequencies, such as 2.4 GHz or 5 GHz, to communicate with each other. If there are multiple devices or networks using the same or overlapping radio frequencies, they can interfere with each other and cause Wi-Fi connection issues, such as intermittent disconnections, slow speeds, or poor quality .
To fix this issue, the technician can try changing the radio frequency or channel of the router or the laptop, to avoid interference from other sources. The technician can also use a tool such as Wi-Fi Analyzer to scan the nearby wireless networks and find the best frequency or channel to use. Alternatively, the technician can move the router or the laptop to a different location, away from potential sources of interference, such as cordless phones, microwaves, Bluetooth devices, or other routers .
The other options are less likely to be the reason for the issue. Firewall settings are software configurations that control the network traffic and security of a device. They may block some websites or applications from accessing the internet, but they should not affect the Wi-Fi connection itself. MAC address filter is a feature that allows the router to restrict access to specific devices based on their MAC addresses, which are unique identifiers for network interfaces. If the MAC address filter is enabled and the laptop's MAC address is not on the allowed list, it will not be able to connect to the Wi-Fi network at all, not intermittently. Number of connected devices is the amount of devices that are using the same Wi-Fi network at the same time. This may affect the network performance or bandwidth, but it should not cause intermittent disconnections, unless the network is overloaded or unstable.
References:
1: How To Fix WiFi Connection Problems - Help Desk Geek
2: How to Fix Your WiFi Connection Problems - Lifewire
3: Wi-Fi Analyzer - Apps on Google Play
NEW QUESTION # 368
An online retailer would like to add capacity to support increased sales. Additional servers have been installed.
Which of the following should be used to ensure each new server is being properly utilized?
Answer: C
Explanation:
https://www.resonatenetworks.com/2020/04/29/clustering-vs-load-balancing-whats-the-difference/ A load balancer distributes network traffic evenly across multiple servers, ensuring each server is being properly utilized. This helps to prevent overloading of any individual server, which can cause downtime or slow response times for users. In this scenario, adding a load balancer would be the best way to ensure the new servers are being properly utilized. References: CompTIA A+ Certification Exam: Core 1 - Page 181
NEW QUESTION # 369
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