CompTIA 220-1101 Online Practice Questions and Exam Preparation

CompTIA 220-1101 Online Questions & Answers

• Question 281:

  Which of the following port numbers are associated with email traffic? (Select two).

  A. 23
  B. 25
  C. 67
  D. 110
  E. 137
  F. 443
  B. 25
  D. 110

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  Explanation

  Comprehensive and Detailed Step-by-Step Explanation: To answer this question, we need to identify the port numbers associated with email protocols used in client-server communication.

  Port 25 (SMTP - Simple Mail Transfer Protocol):

  CompTIA A+ Core 1 Exam Objectives (220-1101), Domain 2.5 ?Explain basic wired and wireless networking concepts, including ports and protocols.

  Port 110 (POP3 - Post Office Protocol v3):

  POP3 is used for retrieving emails from a mail server. It is commonly used for downloading email messages to a local client, after which the messages are deleted from the server. While not as commonly used today (due to IMAP being preferred), POP3 is still a recognized email protocol, and its association with port 110 makes it a valid answer.

  CompTIA A+ Core 1 Exam Objectives (220-1101), Domain 2.5 ?Explain basic wired and wireless networking concepts, including ports and protocols.

  Incorrect Options:

  Option A: Port 23: This is the Telnet protocol used for remote terminal access. It is not related to email traffic.

  Option C: Port 67: This port is associated with the DHCP (Dynamic Host Configuration Protocol) server-to-client communications. It is unrelated to email.

  Option E: Port 137: This port is part of NetBIOS, used for name resolution in legacy Windows environments. It is not relevant to email traffic.

  Option F: Port 443: This port is used for HTTPS (secure web traffic) and is unrelated to email protocols.

  Key Takeaway:The two correct port numbers associated with email traffic are Option B: 25 (SMTP) for sending emails and Option D: 110 (POP3) for retrieving emails.

• Question 282:

  A customer's workstation will not boot A technician runs diagnostics on the system and discovers it is set up in a RAID 0 configuration, and a single SATA hard drive failed. The system was set up for Performance. Once repaired the customer request redundancy be built into the system and an increase in performance. Which of the following describes how the technician should set up the new RAID configuration?

  A. RAID 1 configuration that will utilize new SSD.
  B. RAID 2 configuration that will allow the loss of a hard drive without failure.
  C. RAID 6 configuration that will allow the loss of two hard drives without failure.
  D. RAID 10 configuration utilizing HDD
  D. RAID 10 configuration utilizing HDD

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  Explanation

• Question 283:

  A user acquired a new workstation and is attempting to open multiple targe Excel files simultaneously. The user is not experiencing the expected performance when executing such large requests. Which of the following should a technician do FIRST?

  A. Increase the swap partition.
  B. Upgrade the CPU in the workstation.
  C. Upgrade the power supply in the workstation.
  D. Upgrade the RAM in the workstation.
  D. Upgrade the RAM in the workstation.

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  Explanation

  Opening multiple large Excel files simultaneously requires a large amount of RAM. Upgrading the RAM in the workstation should improve performance.

  References: CompTIA A+ Certification Exam Guide, Ninth Edition, Chapter 9

• Question 284:

  A help desk technician plugged in a user's new computer to a network port After a few minutes the computer showed an APIPA address. Which of the following is the MOST likely reason this happened?

  A. The WLAN is disabling the NIC card.
  B. The network cable is not attached.
  C. The PC is unable to contact a DHCP server
  D. The DHCP server is using addresses in the range of 169.254.254.1.
  C. The PC is unable to contact a DHCP server

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  Explanation

  The most likely reason for a computer showing an APIPA address after being plugged into a network port is that the PC is unable to contact a DHCP server1. Automatic Private IP Addressing (APIPA) is a DHCP fail-safe that protects a computer system from failure. It invokes a standby mechanism for local Internet Protocol version 4 (IPv4) networks supported by Microsoft Windows. With APIPA, DHCP clients can obtain IP addresses even when DHCP servers are not functional1. The other options are less likely to be the cause of the issue1.

• Question 285:

  Which of the following is the SAFEST way to replace RAM on a server that has a redundant power supply?

  A. Unplug one power cable.
  B. Verify the RAM temperature.
  C. Utilize a grounding strap.
  D. Replace the RAM while the server is running.
  C. Utilize a grounding strap.

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  Explanation

  Utilizing a grounding strap is the safest way to replace RAM on a server that has a redundant power supply. This is because the grounding strap prevents electrostatic discharge (ESD) when handling the RAM, which can cause damage to the RAM and the server. Therefore, it is important to always use a grounding strap when handling RAM or other sensitive components.

• Question 286:

  Which of the following is the best reason to set up a virtual sandbox?

  A. To run a test application that communicates with the test environment
  B. To analyze the effects of malware in a safe manner
  C. To host an application that multiple remote users can access
  D. To test an application in Windows and Linux concurrently
  A. To run a test application that communicates with the test environment

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  Explanation

• Question 287:

  The display in a conference room has a ghost image that does not match the presentation.

  Which of the following would test resolve the issue?

  A. Adjust the color settings.
  B. Correct the keystone.
  C. Increase the brightness levels
  D. Replace the monitor.
  B. Correct the keystone.

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  Explanation

  Incorrect Options:

  Adjust the color settings: This is used for improving color balance and has no impact on ghosting or mismatched images.

  Increase the brightness levels: Brightness changes the visibility of the image but does not address ghosting or alignment.

  Replace the monitor: Replacing the monitor is unnecessary unless there is hardware failure, which is not indicated here.

  CompTIA A+ Core 1 Exam Objectives (220-1101), Domain 3.4 ?Display troubleshooting.

• Question 288:

  A colleague has a laptop that has been working as expected for several years wall outlet. The MOST likely component that needs to be replaced is the:

  A. power adapter.
  B. battery.
  C. system fan.
  D. hard drive.
  B. battery.

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  Explanation

  Based on the information provided in the question, the MOST likely component that needs to be replaced is A. power adapter. If a laptop has been working as expected for several years but suddenly stops working when it is plugged into a wall outlet, it is possible that the power adapter has failed and is no longer able to provide power to the laptop. In this case, replacing the power adapter would likely resolve the issue. The other components listed in the options (battery, system fan, and hard drive) could also potentially fail and cause issues with a laptop's performance. However, based on the specific scenario described in the question (the laptop suddenly stops working when plugged into a wall outlet), it seems most likely that the issue is related to the power adapter.

  If the laptop has been working as expected for several years and suddenly stops working, the power adapter is the most likely component that needs to be replaced. Over time, the power adapter can become worn or damaged, resulting in a loss of power to the laptop.

  References: CompTIA A+ Certification Exam Guide, Ninth Edition, Chapter 3

• Question 289:

  A user reports that a display is slow to turn on, and the colors are distorted and discolored. Once the display turns on, it appears to have lines going through the image and intermittently goes blank. Which of the following is the most likely cause of the issue?

  A. Incorrect data source
  B. Incorrect resolution settings
  C. Physical cabling issues
  D. Incorrect refresh rate
  E. Display burn-in
  C. Physical cabling issues

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  Explanation

• Question 290:

  A technician is trying to fix a computer that fails to boot even when all the RAM is removed. Which of the following should the technician do next to troubleshoot the issue?

  A. Inspect the motherboard for swollen capacitors.
  B. Replace the CMOS battery_
  C. Swap the power supply if it is inoperable.
  D. Check to see if the HDD power connectors are well seated
  C. Swap the power supply if it is inoperable.

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  Explanation

  The next step that the technician should do to troubleshoot the issue is

  C. Swap the power supply if it is inoperable. A power supply is a device that converts the alternating current (AC) from the wall outlet into direct current (DC) that the computer components can use. A power supply is essential for the computer to boot and function properly. A faulty or inadequate power supply can cause various issues, such as no power, no display, random shutdowns, or beeping sounds. In this scenario, the technician is trying to fix a computer that fails to boot even when all the RAM is removed. RAM stands for Random Access Memory, and it is a type of memory that stores data and instructions for the processor to access and process. RAM is also essential for the computer to boot and function properly. A faulty or incompatible RAM can cause various issues, such as no boot, no display, blue screen, or beeping sounds. One of the basic troubleshooting techniques for a computer that fails to boot is to remove all the RAM modules and try to boot with one module at a time in different slots. This can help to identify if the problem is caused by a bad RAM module or a bad RAM slot. If the computer still fails to boot even when all the RAM is removed, it means that the problem is not related to the RAM, but to another component. The next step that the technician should do is to swap the power supply if it is inoperable. This means that the technician should test the power supply with a multimeter or a power supply tester, and replace it with a known good one if it is faulty or insufficient. This can help to determine if the problem is caused by a bad power supply or a bad motherboard. The other options are not the next steps that the technician should do, because they are less likely or less effective. Inspecting the motherboard for swollen capacitors (option A) may be helpful if the problem is caused by a damaged or defective motherboard, but it requires opening the computer case and visually examining the motherboard components. Replacing the CMOS battery (option B) may be necessary if the problem is caused by a low or dead CMOS battery, but it usually affects only the BIOS settings and not the boot process. Checking to see if the HDD power connectors are well seated (option D) may be useful if the problem is caused by a loose or faulty HDD connection, but it usually affects only the data access and not the boot process. For more information about troubleshooting power supply and boot issues, you can refer to the following web search results: [How to Troubleshoot a Computer That Won't Turn On], [How to Test a Power Supply Using a Multimeter], [How to Fix a Computer That Shows No Sign of Power], [How to Troubleshoot Beep Codes].