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CompTIA 220-1101 (CompTIA A+ Certification Exam: Core 1) is a certification exam that tests the fundamental knowledge of individuals who aspire to build a career in the IT industry. 220-1101 exam is the first of two exams that candidates must pass to obtain the CompTIA A+ certification. It covers a broad range of topics, including hardware, operating systems, networking, mobile devices, and security.

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CompTIA A+ Certification is a globally recognized certification that is respected by employers worldwide. It is the industry standard for starting a career in the IT industry, and it is a prerequisite for many advanced certifications, such as CompTIA Network+ and CompTIA Security+. Candidates who pass the exam demonstrate their knowledge and skills in computer hardware and software, and they are eligible for various IT job roles with a competitive salary.

Candidates who pass the CompTIA A+ Certification Exam: Core 1 will have demonstrated their ability to install, configure, and maintain hardware and software, troubleshoot common issues, and understand basic networking concepts. They will also have a solid foundation in cybersecurity and be able to identify and prevent security threats.

CompTIA A+ Certification Exam: Core 1 Sample Questions (Q545-Q550):

NEW QUESTION # 545
A technician is receiving reports that the entire office sporadically loses network connectivity throughout the day. The technician determines the root cause to be EMI. Which of the following cable mediums would be the MOST cost effective without sacrificing system performance?

A. Plenum Cat 5e
B. Multimode fiber
C. Shielded Cat 6
D. Coaxial

Answer: C

Explanation:
Explanation
In this situation, the MOST cost-effective cable medium that would not sacrifice system performance would be B. Shielded Cat 6. Electromagnetic interference (EMI) can disrupt network connectivity by interfering with the signals transmitted over network cables. Shielded Cat 6 cables are designed to provide protection against EMI by incorporating a layer of shielding material around the cable's conductors. This shielding helps to prevent EMI from interfering with the signals transmitted over the cable.

NEW QUESTION # 546
A user is requesting a headset that can be physically connected to a laptop for online conference calls. Which of the following connections should the headset use?

A. DVI
B. Thunderbolt
C. USB
D. Bluetooth

Answer: C

Explanation:
A USB (universal serial bus) connection is the most suitable option for a headset that can be physically connected to a laptop for online conference calls. A USB connection is a digital interface that can transfer both power and data between devices using a standard cable. A USB headset can plug into any available USB port on the laptop and communicate with the audio and microphone drivers without requiring additional software or hardware. A USB headset can also offer enhanced features, such as inline controls, noise cancellation, surround sound, or LED lighting, depending on the model and manufacturer.
Other connections, such as Bluetooth, DVI, or Thunderbolt, are not appropriate for a headset that can be physically connected to a laptop. Bluetooth is a wireless technology that uses radio waves to pair devices over a short distance, and it requires a battery or a charger for the headset. DVI (digital visual interface) is a video interface that can transmit digital or analog signals between a display device and a video source, and it is not compatible with audio or microphone devices. Thunderbolt is a high-speed interface that can support multiple protocols, such as DisplayPort, USB, or PCI Express, and it requires a special cable and port that may not be available on all laptops.
Reference:
How to set up and use a headset on Windows 10 | Windows Central1
How to Connect a Headset to a Computer2
USB - Wikipedia

NEW QUESTION # 547
After moving a user's legacy workstation into a new private office that does not have a LAN connection, the technician is unable to connect to a wireless network. Which of the following is the most likely reason?

A. Wi-Fi AP replacement
B. Hidden Wi-Fi SSID
C. Missing Wi-Fi adapter
D. Incorrect Wi-Fi channel

Answer: C

Explanation:
A Wi-Fi adapter is a device that allows a computer to connect to a wireless network. A legacy workstation may not have a built-in Wi-Fi adapter, or it may have an outdated or incompatible one. If the workstation does not have a Wi-Fi adapter, it will not be able to detect or access any wireless networks, regardless of the location, signal strength, or configuration of the network. To fix this issue, the technician can install a Wi-Fi adapter on the workstation, either internally or externally. An internal Wi-Fi adapter is a card that fits into a slot on the motherboard, while an external Wi-Fi adapter is a device that plugs into a USB port. The technician should choose a Wi- Fi adapter that is compatible with the workstation's operating system, hardware, and wireless standards.

NEW QUESTION # 548
A small ISP has hired a new technician Joe, the new technician, is being trained to configure customers* home networks The trailing instructor gives me technician a starter kit with cables, cable ends, and other network equipment and asks mm to build a working network.
The computer should be connected to have internet connectivity and the phone should be connected to have a dial tone.
INSTRUCTIONS
Use the appropriate cables. cable ends, tools and equipment to configure the network ana connect an components accordingly There are 3 steps and the simulation starts on step 1.

Answer:

Explanation:
See the answer below in explanation part.
Explanation
Answer of both steps below.
A picture containing text, screenshot, indoor Description automatically generated

Diagram Description automatically generated with medium confidence

NEW QUESTION # 549
Which of the following services checks whether the sender's IP address is associated with the sender's domain name when receiving email?

A. DMARC
B. DKIM
C. MX
D. SPF

Answer: D

Explanation:
Explanation
The correct answer is C. SPF.
SPF stands for Sender Policy Framework, which is a protocol that allows domain owners to specify which IP addresses are authorized to send email on behalf of their domains1. SPF helps prevent email spoofing and phishing by verifying the sender's identity and preventing unauthorized use of their domain name12.
When an email is received, the receiving server checks the SPF record of the sender's domain, which is a DNS TXT record that lists the valid IP addresses for that domain12. The server then compares the sender's IP address with the SPF record and determines if it matches or not. If it matches, the email passes the SPF check and is accepted; if it does not match, the email fails the SPF check and is rejected or marked as spam12.
DKIM stands for DomainKeys Identified Mail, which is a protocol that allows domain owners to digitally sign their emails using a public-private key pair3. DKIM helps ensure the integrity and authenticity of email messages by verifying that they have not been tampered with or forged during transit3 .
MX stands for Mail Exchange, which is a type of DNS record that specifies the mail servers that are responsible for receiving email for a domain. MX records help direct incoming email to the correct destination and prioritize them based on preference values .
DMARC stands for Domain-based Message Authentication, Reporting and Conformance, which is a protocol that builds on SPF and DKIM and allows domain owners to define how receivers should handle unauthenticated or suspicious emails from their domains. DMARC helps protect domains from email fraud and abuse by providing feedback and reports on email delivery and authentication status .
Therefore, SPF is the only service among the options that checks whether the sender's IP address is associated with the sender's domain name when receiving email.

NEW QUESTION # 550
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