CompTIA CompTIA Certifications 220-1101 Questions & Answers

• Question 701:

  A technician is asked to purchase and install a line-of-sight wireless system that provides a stable network connection between two buildings. Which of the following needs to be considered prior to purchasing the system?

  A. IP address range

  B. SSID broadcast

  C. Firewall rules

  D. Regulatory power limits

  Correct Answer: D

  A line-of-sight wireless system is a type of wireless communication that requires a clear and unobstructed path between the transmitter and the receiver. This can be achieved by using directional antennas that focus the radio signals in a narrow beam. A line-of-sight wireless system can provide a stable network connection between two buildings that are within the range and visibility of each other. However, before purchasing and installing a line-of-sight wireless system, one of the factors that needs to be considered is the regulatory power limits. The power limit is the maximum amount of radio frequency (RF) energy that a transmitter can emit. Different countries and regions have different regulations and standards for the allowable power levels of wireless devices. Exceeding the power limit can cause interference with other wireless services, such as aviation, radio, television, etc. It can also pose health and safety risks to humans and animals. Therefore, a technician should check the local laws and regulations for the power limits of the wireless system before buying and installing it. The technician should also use a proper tool to measure the actual power output of the transmitter and adjust it accordingly. The technician should also ensure that the transmitter and receiver are aligned properly and have a clear line of sight without any obstacles. The other options are not relevant to the line-of-sight wireless system. The IP address range is a set of numerical identifiers that are assigned to devices on a network. It does not affect the physical transmission of wireless signals. The SSID broadcast is a feature that allows a wireless network to announce its name and availability to nearby devices. It does not affect the stability of the network connection between two buildings. The firewall rules are a set of policies that control the incoming and outgoing traffic on a network. They do not affect the line-ofsight wireless system. References: Wireless line-of-sight, non-line-of-sight, beyond-line-of-sight propagation Point-to-point Wi-Fi bridging between buildings--the cheap and easy way How Does Wireless Internet, or Line of Sight Internet Work? Line-of-Sight Transmission Engineering LibreTexts What is Line of Sight (LoS)? - Definition from Techopedia

• Question 702:

  After a required operating system upgrade on a mobile deuce, a user's external monitor no longer works. Which of the following should a technician do to fix this issue?

  A. Install the latest graphics drivers.

  B. Replace the monitor

  C. Restore the operating system to the previous version.

  D. Reseat the external video adapter.

  Correct Answer: A

  Explanation: The correct answer is A. Install the latest graphics drivers. The most likely cause of the external monitor not working after an operating system upgrade is that the graphics drivers are incompatible with the new version. Installing the latest graphics drivers from the manufacturer's website or using Windows Update can resolve this issue. Replacing the monitor, restoring the operating system to the previous version, or reseating the external video adapter are not effective solutions for this problem. References: You can find more information about troubleshooting external monitor connections in Windows 101 and Windows 112. You can also learn how to update the display driver using Device Manager2.

• Question 703:

  Which of the following server types can dynamically assign primary and secondary DNS?

  A. DHCP server

  B. Global catalog server

  C. Web server

  D. Name server

  Correct Answer: A

  Explanation: A DHCP (Dynamic Host Configuration Protocol) server is a server type that can dynamically assign IP addresses and other network configuration parameters to clients, such as primary and secondary DNS (Domain Name System) servers. DNS servers are responsible for resolving hostnames to IP addresses and vice versa. A global catalog server, a web server, and a name server are not involved in DHCP operations. Reference: [CompTIA A+ Core 1 (2201101) Certification Study Guide], page 30.

• Question 704:

  A technician plans to upgrade a laptop's RAM from 4GB to 16GB. Which of the following should the technician do?

  A. Purchase the same architecture of RAM.

  B. Configure the laptop's BIOS settings for the RAM upgrade.

  C. Purchase RAM with the same CAS latency.

  D. Purchase the same brand of RAM.

  Correct Answer: A

  Explanation: The most important factor to consider when upgrading a laptop's RAM is the architecture of the RAM, which determines the type, speed, and capacity of the memory modules. The architecture of the RAM must match the architecture of the laptop's motherboard and processor, otherwise the RAM will not be compatible or function properly. The architecture of the RAM includes the DDR generation (such as DDR3 or DDR4), the form factor (such as SO-DIMM), the pin count (such as 204 or 260), the voltage (such as 1.35V or 1.5V), and the frequency (such as 1600MHz or 2400MHz). The other options are not as crucial or relevant for the RAM upgrade. The brand of the RAM does not matter as long as the RAM meets the specifications of the laptop and is of good quality. The CAS latency of the RAM is a measure of the delay between the memory controller requesting data and the RAM delivering it, and it affects the performance of the RAM. However, the CAS latency is not a fixed value and can vary depending on the frequency and voltage of the RAM. Therefore, purchasing RAM with the same CAS latency is not necessary or sufficient for compatibility. The laptop's BIOS settings are usually configured to automatically detect and adjust to the RAM upgrade, and do not need to be manually changed by the technician. References: CompTIA A+ Certification ore 1 Objectives1 The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook2 How to Upgrade the RAM in Your Laptop | Tom's Hardware3 How to Upgrade RAM on a Laptop | Crucial.com4

• Question 705:

  A user needs a technician's help connecting a laptop to a projector The projector is old and only has analog input. Which of the following cable types should the technician use to connect the laptop to the proJector?

  A. HDMI

  B. RS-232

  C. VGA

  D. DisplayPort

  Correct Answer: C

  VGA stands for Video Graphics Array, and it is a type of cable that can be used to transmit analog video signals between devices, such as laptops, monitors, or projectors. VGA cables have 15 pins arranged in three rows, and they are usually color-coded blue. VGA cables can support resolutions up to 2048 x 1536 pixels, but they have low quality and limited color depth compared to modern digital standards such as HDMI or DisplayPort . A projector is a device that projects an image or a video onto a large surface, such as a wall or a screen. A projector can have different types of input ports, such as VGA, HDMI, DVI, or USB. A projector can also have different types of output technologies, such as LCD, DLP, or LED . In this scenario, the user needs a technician's help connecting a laptop to a projector. The projector is old and only has analog input. This means that the projector can only accept analog video signals, and not digital ones. Therefore, the technician should use a VGA cable to connect the laptop to the projector, as it is the most common type of analog video cable. The technician should also make sure that the laptop and the projector have compatible VGA ports, and that the laptop's display settings are adjusted to match the projector's resolution and aspect ratio.

• Question 706:

  A technician attempts to join a Windows client to a domain but receives the following error:

  An attempt to resolve the hostname has failed.

  The technician generates the display shown below utilizing ipconfig /all.

  

  Which of the following is the most likely reason for the error?

  A. DNS

  B. Physical address

  C. Subnet mask

  D. IPv4 address

  E. Default gateway

  Correct Answer: A

  Explanation: The most likely reason for the error is that the DNS server is not configured correctly. The technician should check the DNS server settings and make sure they are correct. DNS, or Domain Name System, is a service that translates domain names, such as www.example.com, into IP addresses, such as 192.168.1.1, that computers use to communicate with each other. DNS is essential for joining a Windows client to a domain, which is a logical group of computers that share a common directory and security policy. A domain name, such as example.com, identifies the domain and its members on the network. To join a Windows client to a domain, the client needs to resolve the hostname of the domain controller, which is the server that manages the domain and its resources. The client sends a DNS query to the DNS server, asking for the IP address of the domain controller. The DNS server responds with the IP address, and the client uses it to establish a connection with the domain controller and complete the domain join process. However, if the DNS server is not configured correctly, the client may not be able to resolve the hostname of the domain controller, and receive the error: An attempt to resolve the hostname has failed. This can happen if the DNS server is not reachable, not authoritative, or not updated. For example, the DNS server may have an incorrect IP address, a wrong DNS suffix, a missing or outdated DNS record, or a firewall blocking the DNS traffic. To fix the error, the technician should verify that the DNS server settings on the client and the domain controller are correct and consistent. The technician can use the ipconfig /all command to display the DNS server settings, such as the IPv4 address, the subnet mask, the default gateway, and the DNS suffix. The technician can also use the nslookup command to test the DNS resolution and the ping command to test the connectivity. The technician should make sure that the client and the domain controller are using the same DNS server, and that the DNS server can resolve the hostname of the domain controller. References: How to Resolve the "Temporary failure in name resolution" Error1 Strict hostname resolution configured but no hostname was set2 Error: Hostname Not Resolved to an IP Address - HostGator3 The Host Name Could Not be Resolved in DNS4 Troubleshoot DNS name resolution on the Internet - Windows Server5

• Question 707:

  A users wireless laptop stopped working A technician replaced the wireless card, but the wireless range is now limited. Which of the following should the technician perform next?

  A. Verify the antenna's connection.

  B. Switch from a 2 4GHz band to a 5GHz band

  C. Change the channels of the Wi-Fi card settings.

  D. Upgrade the wireless driver.

  Correct Answer: A

  A limited wireless range after replacing the wireless card could indicate that the antenna is not properly connected to the card, or that the antenna is damaged or obstructed. According to the web search results, some possible steps to

  troubleshoot and verify the antenna's connection are:

  Open the laptop case and locate the wireless card and the antenna wires. Make sure that the wires are securely attached to the card's connectors, and that they are not loose or broken12. Check the position and orientation of the antenna.

  Make sure that it is not blocked by any metal objects, walls, or other sources of interference. Adjust the angle or location of the antenna if possible to improve the signal strength3. Replace the antenna with a new one or a compatible one from

  another device. Test the wireless range and performance with the new antenna2.

• Question 708:

  A technician is installing a storage solution for a computer that requires data redundancy with the fewest drives possible. Which of the following would best meet this requirement?

  A. RAID O

  B. RAID 1

  C. RAID 5

  D. RAID 10

  Correct Answer: B

• Question 709:

  A user contacted the help desk about files that disappeared from a laptop. The technician discovered during troubleshooting that the drive was corrupt due to a possible mechanical failure, but the files were still readable. Which of the following actions did the technician take during troubleshooting? (Select two).

  A. Checked S.M.A.R.T. information

  B. Made sure the replacement drive was compatible

  C. Ran CHKDSK

  D. Reseated the HDD connector

  E. Increased the page file size

  F. Updated the firmware

  Correct Answer: AC

  Explanation: S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) is a feature of hard drives that monitors various parameters, such as temperature, error rate, spin-up time, and seek time, to assess the health and performance of the drive. S.M.A.R.T. can also predict the likelihood of failure based on the historical trends of these parameters. A technician can check the S.M.A.R.T. information of a hard drive using various tools, such as the BIOS, the operating system, or third-party software. Checking the S.M.A.R.T. information can help the technician diagnose the cause and severity of the drive corruption and determine the best course of action. CHKDSK (Check Disk) is a command-line utility that scans the file system and the disk surface for errors and attempts to fix them. CHKDSK can also recover readable data from bad sectors and mark them as unusable. A technician can run CHKDSK on a corrupt drive using various options, such as /f (fix errors), /r (recover data), or /x (dismount the drive). Running CHKDSK can help the technician repair the drive corruption and retrieve the missing files. References: How to Check Your Hard Drive's Health | PCMag1 How to Check a Disk from Windows - dummies2 How to Use CHKDSK in Windows 10 - Lifewire3

• Question 710:

  A user's laptop will not turn on for a meeting in a conference room. However, the laptop turns on correctly when connected to the external monitor, mouse, and keyboard at the user's desk. Which of the following should a technician do to ensure that the laptop functions everywhere in the office?

  A. Reinstall the laptop's operating system.

  B. Enable a remote desktop account.

  C. Issue a peripheral set for use in the conference room.

  D. Replace the laptop's battery.

  Correct Answer: C