CompTIA CompTIA Certifications 220-1101 Questions & Answers

• Question 741:

  A technician is setting up a home network with the following requirements:

  Automatic distribution of IP addresses Internet access

  Which of the following should the technician configure? (Select two).

  A. DHCP

  B. APIPA

  C. VPN

  D. Public IP addresses

  E. Gateway

  F. Static IP addresses

  Correct Answer: AE

  Explanation: DHCP (Dynamic Host Configuration Protocol) is a protocol that allows a device to automatically obtain an IP address and other network settings from a DHCP server, such as a home router. This simplifies the network configuration and avoids IP address conflicts. DHCP is a common requirement for home networks that have multiple devices that need Internet access. A gateway is a device that connects two different networks, such as a home network and the Internet. A gateway usually performs routing functions, which means it determines the best path for packets to reach their destination. A gateway also often performs NAT (Network Address Translation), which allows multiple devices on a home network to share a single public IP address. A gateway is a necessary requirement for home networks that need Internet access. References Understanding DHCP on Home Networks Basic home gateway services: DHCP, DNS, NAT IP Addresses on Home Networks - A Beginner's Guide

• Question 742:

  A user's desktop computer is connected via an Ethernet cable and often drops the connection. When the computer does connect, the network speeds are normal. No other network users on the same floor are reporting issues. The administrator verified that all authentication systems are working as intended and the Ethernet cable was replaced. Which of the following is the most likely cause of the issue?

  A. Slow network speeds

  B. Port flapping

  C. Limited connectivity

  D. 802.1X configuration

  Correct Answer: B

  Explanation: Port flapping, also known as link flapping, is a network issue that causes a switch port's state to fluctuate between up and down within short periods of time. This instability affects network connectivity and performance. Port flapping can be caused by various factors, such as faulty cables, hardware issues, configuration issues, or other network issues12. In this scenario, the user's desktop computer is connected via an Ethernet cable and often drops the connection, while no other network users on the same floor are reporting issues. The administrator verified that all authentication systems are working as intended and the Ethernet cable was replaced. Therefore, the most likely cause of the issue is port flapping on the switch port that connects to the user's computer. References

  1: Port flapping ?Definition, common causes, and troubleshoot ...

  2: Solved: Port Flapping Issue - Cisco Community

• Question 743:

  A company has implemented a policy that allows employees to use personal devices to perform work duties. Which of the following policies should the technician activate to protect company information?

  A. MFD

  B. MAM

  C. MFA

  D. MDM

  Correct Answer: D

  Explanation: MDM (Mobile Device Management) is a policy that allows the technician to remotely manage, secure, and monitor the personal devices that employees use for work purposes. MDM can enforce security settings, such as passwords, encryption, and antivirus software, on the personal devices. MDM can also remotely wipe or lock the devices in case of loss, theft, or termination of employment. MDM can protect company information by preventing unauthorized access, data leakage, or malware infection on the personal devices. References What is Mobile Device Management (MDM)? Chapter 2: Networking

• Question 744:

  A user reports being unable to access the network. A help desk technician notices an APIPA on the user's workstation. Which of the following services should the technician investigate first?

  A. RADIUS

  B. DHCP

  C. AAA

  D. DNS

  Correct Answer: B

  DHCP (Dynamic Host Configuration Protocol) is a network service that automatically assigns IP addresses and other configuration parameters to devices that request them. DHCP simplifies the management of IP addresses and avoids conflicts and errors67. An APIPA (Automatic Private IP Addressing) is a feature of Windows that assigns a default IP address in the range of 169.254.x.x to a device when it cannot obtain a valid IP address from a DHCP server. An APIPA indicates that there is a problem with the DHCP service or the network connectivity between the device and the DHCP server89. Therefore, the technician should investigate the DHCP service first to check if it is running, configured correctly, and has enough available IP addresses to assign. The other services are not directly related to the IP address assignment. RADIUS (Remote Authentication Dial-In User Service) is a protocol that provides centralized authentication, authorization, and accounting for network access10. AAA (Authentication, Authorization, and Accounting) is a framework that controls the access and usage of network resources11. DNS (Domain Name System) is a service that resolves domain names into IP addresses12. References

  6: What is DHCP (Dynamic Host Configuration Protocol)? - Definition from WhatIs.com

  7: How DHCP works - Windows Server | Microsoft Docs

  8: What is APIPA (Automatic Private IP Addressing)? - Definition from WhatIs.com

  9: How to Fix an IP Address Conflict

  10: What is RADIUS (Remote Authentication Dial-In User Service)? - Definition from WhatIs.com

  11: What is AAA (authentication, authorization, and accounting)? - Definition from WhatIs.com

  12: What is DNS (Domain Name System)? - Definition from WhatIs.com

• Question 745:

  When a user's workstation is turned on, a message displays indicating that the date and time are incorrect. Other computers on the network do not display this message. Which of the following is the most likely cause of this issue?

  A. The time server is misconfigured.

  B. The BIOS is not updated.

  C. The CMOS battery is discharged.

  D. The CPU is slow.

  Correct Answer: C

  Explanation: The CMOS (complementary metal-oxide-semiconductor) is a small chip on the motherboard that stores the BIOS settings, including the date and time. The CMOS battery is a coin cell battery that provides power to the CMOS chip when the computer is turned off, so that the BIOS settings are not lost. If the CMOS battery is discharged, the CMOS chip will lose its data, and the date and time will be reset to the default values. This will cause a message to display indicating that the date and time are incorrect when the computer is turned on. The other computers on the network do not display this message because they have functional CMOS batteries. The most likely cause of this issue is the CMOS battery is discharged, and it needs to be replaced with a new one12.

• Question 746:

  Which of the following is the best environment for an engineer to use for research purposes?

  A. Host

  B. Sandbox

  C. Simulated production

  D. Cross-platform

  Correct Answer: B

  A sandbox is a virtual environment that isolates the engineer's research activities from the rest of the system. This allows the engineer to test, experiment, and modify the system without affecting the real data, applications, or settings. A sandbox is the best environment for research purposes because it provides a safe and controlled way to explore new ideas, simulate scenarios, and troubleshoot problems. A sandbox can also be easily reset or deleted after the research is done. References What is a Sandbox Environment? Chapter 4: Virtualization and Cloud Computing

• Question 747:

  A user reports that when pressing a radio button on a tablet, an item a couple of inches to the right of the pressed button gets selected instead. Which of the following components may need to be replaced?

  A. Gyroscope

  B. Battery

  C. Digitizer

  D. Glass

  Correct Answer: C

  Explanation: A digitizer is a component that converts the touch input on a tablet screen into digital signals that can be processed by the device. A digitizer consists of a thin layer of transparent material that covers the glass screen and has sensors that detect the position and pressure of the touch. If the digitizer is damaged, misaligned, or poorly calibrated, it can cause inaccurate touch input, such as selecting the wrong item or not responding at all12. Therefore, the most likely cause of the issue in this scenario is a faulty digitizer that may need to be replaced. The other components are not directly related to the touch input functionality of the tablet. A gyroscope is a sensor that measures the orientation and rotation of the device3. A battery is a power source that supplies electricity to the device4. A glass is a protective layer that covers the screen and prevents scratches and cracks5. References

  1: What is a Digitizer? - Definition from Techopedia

  2: How to Fix a Broken Digitizer on a Tablet | Chron.com

  3: What is a Gyroscope Sensor in Mobile Phones? - Definition from Techopedia

  4: What is a Battery? - Definition from Techopedia

  5: What is Glass? - Definition from Techopedia

• Question 748:

  A technician is upgrading the power supply of a workstation that is running multiple GPUs in an SLI configuration. Which of the following cables is needed to ensure the power supply can support the workstation?

  A. 8-pin PCle

  B. 4-pin Molex

  C. 4+4-pin ATX12V

  D. 8-pin ATX12V

  Correct Answer: A

  The 8-pin PCle power cable is designed to supply power to a graphics card that requires more power than the PCle slot can provide. A workstation that is running multiple GPUs in an SLI configuration would need this cable to ensure adequate power delivery and stability. The other cables are not suitable for this purpose, as they are either meant for the motherboard (4+4-pin ATX12V and 8-pin ATX12V) or for older devices (4-pin Molex) https://superuser.com/ questions/849265/is-there-a-difference-between-8-pin- eps12v-and- pci-e-connectors

• Question 749:

  A technician wants to deploy a .msi package to a corporate network. The technician needs to verify the application deployment will not affect other legacy applications on the end users' computers. Which of the following would the technician consider the most appropriate for this situation?

  A. Virtual network

  B. Application virtualization

  C. Cross-platform virtualization

  D. Virtual sandbox

  E. Virtual desktop

  Correct Answer: B

  Application virtualization is a technique that allows an application to run on a computer without being installed or affecting other applications on the system. Application virtualization creates a virtual environment for the application that isolates it from the underlying operating system and hardware. This way, the technician can verify the application deployment will not affect other legacy applications on the end users

• Question 750:

  A user is expecting a visit from a new customer, and the company's ADSL link has suddenly gone down. Which of the following should the user do to access a smartphone's 4G internet connection from the laptop?

  A. Set up a VPN.

  B. Configure a hotspot.

  C. Activate NFC.

  D. Use a USB cable.

  Correct Answer: B