220-1102 practice questions 421–430

1. Question 421 · 683 in bank

   Which of the following operating systems is most commonly used in embedded systems?

   • AChrome OS
   • BmacOS
   • CWindows
   • DLinux

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   Answer: D

   Explanation

   D. Linux Linux is the most commonly used operating system in embedded systems due to its flexibility, open-source nature, and ability to be customized for specific hardware requirements. It offers a lightweight and efficient solution for embedded devices across various industries such as consumer electronics, automotive, industrial automation, and IoT (Internet of Things) devices.

   Source: Adapted from community discussion — Duke_CT

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2. Question 422 · 683 in bank

   A user identified that a program installed in a workstation does not have optional features enabled. Which of the following must the technician do to install the optional features?

   • AGo to Programs and Features, uninstall the program, and reinstall it.
   • BGo to Administrative Tools and edit System Configuration.
   • CGo to Administrative Tools and run Disk Cleanup.
   • DGo to Programs and Features, select the program, and click on Change.

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   Answer: D

   Explanation

   D. Go to Programs and Features, select the program, and click on Change. In Windows, to install optional features for a program, you typically go to the "Programs and Features" section in the Control Panel or Settings, select the program you want to modify, and then choose the "Change" option. This allows you to modify the installation and add or remove optional features as needed.

   Source: Adapted from community discussion — Duke_CT

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3. Question 423 · 683 in bank

   A technician needs to strengthen security controls against brute-force attacks. Which of the following options best meets this requirement?

   • AMultifactor authentication
   • BEncryption
   • CIncreased password complexity
   • DSecure password vault

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   Answer: A

   Explanation

   A combination of methods can strengthen security controls against brute-force attacks, including strong passwords, limiting login attempts, and multi-factor authentication: Strong passwords: Create complex, unique passwords that are hard to guess but easy to remember. Limit login attempts: Lock out accounts after a set number of failed login attempts, usually 3–5. The lockout can last for a set time or until an administrator unlocks the account. Multi-factor authentication (MFA): Adds layers of authentication to verify the user's identity. MFA requires a second factor, like access to a smartphone or email, in addition to a password.

   Source: Adapted from community discussion — Philco

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4. Question 424 · 683 in bank

   A user is experiencing the following issues with Bluetooth on a smartphone: • The user cannot hear any sound from a speaker paired with the smartphone. • The user is having issues synchronizing data from their smart watch, which is also connected via Bluetooth. A technician checked the Bluetooth settings, confirmed it is successfully paired with a speaker, and adjusted the volume levels, but still could not hear anything. Which of the following steps should the technician take next to troubleshoot the Bluetooth issues?

   • ARestart the smartphone.
   • BReset the network settings.
   • CUnpair the Bluetooth speaker.
   • DCheck for system updates.

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   Answer: A

   Explanation

   A makes the most sense because restarting a device often can lead to fixing the problem, whereas checking for an update, while important, is a less efficient solution.

   Source: Adapted from community discussion — Phillyboy20_

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5. Question 425 · 683 in bank

   A technician is building a new desktop machine for a user who will be using the workstation to render 3-D promotional movies. Which of the following is the most important component?

   • ADedicated GPU
   • BDDR5 SODIMM
   • CNVMe disk
   • D64-bit CPU

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   Answer: A

   Explanation

   A. Dedicated GPU is the most important component for a workstation used to render 3-D promotional movies. The GPU directly impacts rendering performance, making it the key piece of hardware for such specialized tasks. chat gpt 4

   Source: Adapted from community discussion — c7e3f8e

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6. Question 426 · 683 in bank

   A technician is troubleshooting a PC that is unable to perform DNS lookups. Utilizing the following firewall output:

   

   Which of the following ports should be opened to allow for DNS recursion?

   • A1
   • B53
   • C80
   • D123
   • E445

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   Answer: B

   Explanation

   To allow for DNS recursion, the technician should open port 53. This port is commonly used for DNS traffic, both for regular DNS queries and for DNS recursion, which involves a DNS server querying other DNS servers on behalf of a client to resolve a domain name. Therefore, the correct answer is: B. 53

   Source: Adapted from community discussion — Duke_CT

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7. Question 427 · 683 in bank

   When a user attempts to open an email using a company-issued smartphone, the user receives a message stating the email is encrypted and cannot be opened. The user forwards the email to a personal account and receives the same message. The user then contacts the IT department for assistance. The technician instructs the user to contact the sender to exchange information in order to decode the message. Which of the following will the user receive from the sender?

   • AKeys
   • BToken
   • CPassword
   • DRoot CA

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   Answer: A

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8. Question 428 · 683 in bank

   Which of the following statements describes the purpose of scripting languages?

   • ATo access the hardware of the computer it is running on
   • BTo automate tasks and reduce the amount of manual labor
   • CTo abstract the complexity of the computer system
   • DTo compile the program into an executable file

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   Answer: B

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9. Question 429 · 683 in bank

   A technician is setting up a printer on a Linux workstation. Which of the following commands should the technician use to set the default printer?

   • Alpr
   • Blspool
   • Clpstat
   • Dlpoptions

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   Answer: D

   Explanation

   The correct answer is D. lpoptions. The lpoptions command is used in Linux to set printer options and defaults. This can include setting the default printer. The other commands listed have different uses: lpr: Submits files for printing. lspool: This command does not exist in a standard Linux distribution. lpstat: Shows the status of print jobs or printers. So, to set the default printer on a Linux workstation, the technician should use the lpoptions command.

   Source: Adapted from community discussion — Mamad66

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10. Question 430 · 683 in bank

    A user's work PC has been the target of multiple phishing attacks. Which of the following is a way for the user to prevent further attacks?

    • AEnabling Windows Firewall
    • BActivating the email spam filter
    • CUsing a secure VPN connection
    • DRunning vulnerability scans on a schedule

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    Answer: B

    Explanation

    To prevent further phishing attacks, the user should focus on enhancing email security measures. Activating the email spam filter can help by filtering out suspicious emails that could potentially contain phishing attempts. Therefore, the most appropriate option is: B. Activating the email spam filter

    Source: Adapted from community discussion — Duke_CT

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220-1102 practice, question 421. 683 questions available.