CompTIA CompTIA Certifications 220-1101 Questions & Answers

• Question 551:

  A user with a self-configured, static IP address cannot connect to the internet. The technician runs an ipconfig command and receives the following output:

  

  Which of the following should the technician edit?

  A. IPv4 address

  B. Subnet mask

  C. DHCP server

  D. Default gateway

  Correct Answer: B

• Question 552:

  A user's smartphone battery capacity has started going from full to empty within an hour. The user has not recently installed any new applications on the smartphone. An IT technician notices that the smartphone has very high network utilization and thinks this issue might be related to the battery drain. Which of the following troubleshooting steps should the technician attempt next?

  A. Disable Bluetooth.

  B. Connect the smartphone to a Wi-Fi network.

  C. Restart the smartphone.

  D. Update the mobile OS.

  Correct Answer: C

  Explanation: The next troubleshooting step that the technician should attempt is to restart the smartphone. Restarting the smartphone can help resolve many common issues, such as battery drain, network utilization, app crashes, or

  performance slowdowns. Restarting the smartphone can do the following:

  Clear the memory and cache of the smartphone, which can free up space and speed up the device.

  Close any background apps or processes that may be consuming battery or network resources, such as syncing, updating, or streaming. Reset the network settings and connections of the smartphone, which can improve the signal strength

  and quality.

  Refresh the operating system and the user interface of the smartphone, which can fix any glitches or errors.

  To restart the smartphone, the user can follow these steps:

  Press and hold the power button of the smartphone until a menu appears on the screen.

  Tap the option that says Restart, Reboot, or Power off and on. Wait for the smartphone to turn off and then turn on again. Enter the PIN, password, or pattern to unlock the smartphone. Check the battery level and the network utilization of the

  smartphone. If restarting the smartphone does not solve the problem, the technician may need to try other troubleshooting steps, such as updating the mobile OS, disabling Bluetooth, or connecting the smartphone to a Wi-Fi network.

  However, restarting the smartphone is usually the first and simplest step to try.

  References:

  How to stop "Mobile network standby" from draining my battery1 Battery life: Guide to everything that affects and drains your phone battery2 Mobile Network Standby Battery Drain; How To Fix It?3 Get the most life from your Android device's

  battery4 How to Fix Battery Drain from Mobile Network on Galaxy S235

• Question 553:

  A network technician needs to connect into the console of a switch. Which of the following connection types should the technician most likely utilize?

  A. Serial interface

  B. Bluetooth

  C. Near-field communication

  D. Port replicator

  Correct Answer: A

  A serial interface is a common way to connect to the console port of a switch using a rollover cable and a terminal emulator program. This allows the network technician to configure and troubleshoot the switch. Bluetooth, near-field

  communication, and port replicator are not used for console connections.

  Reference: CompTIA A+ Core 1 (220-1101) Certification Study Guide, page 31.

• Question 554:

  A technician is setting up storage in a server that only has SAS connectors for storage. The technician wants the server to utilize RAID 10 for increased performance. Which of the following storage types should the technician install?

  A. NVMe M.2

  B. Mechanical

  C. mSATA

  D. Optical

  Correct Answer: B

  SAS stands for Serial Attached SCSI, which is a type of interface that connects storage devices to servers or workstations. SAS supports both mechanical hard disk drives (HDDs) and solid state drives (SSDs), but not other types of storage devices, such as NVMe M.2, mSATA, or optical drives12. RAID stands for Redundant Array of Independent Disks, which is a method of combining multiple storage devices into a logical unit that provides improved performance, reliability, or both. RAID 10 is a combination of RAID 1 (mirroring) and RAID 0 (striping), which means that data is written across two or more striped sets of mirrored drives34. Therefore, the only type of storage device that the technician can install in a server that only has SAS connectors and wants to use RAID 10 is mechanical HDDs. Mechanical HDDs use spinning platters and moving heads to store and access data, and they are usually cheaper and have larger capacities than SSDs, but they are also slower and more prone to failure . References: CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.3: Storage Devices, Page 131 CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) ram, Chapter 3: Storage, Section 3.2: Storage Interfaces, Page 97 CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.4: RAID, Page 143 CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) ram, Chapter 3: Storage, Section 3.4: RAID, Page 104 CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.3: Storage Devices, Page 129 CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) ram, Chapter 3: Storage, Section 3.3: Hard Disk Drives, Page 99

• Question 555:

  Which of the following devices is capable of dynamically distributing an IP address?

  A. Hub

  B. Switch

  C. Injector

  D. Router

  Correct Answer: D

  Explanation: A router is a device that connects multiple networks and forwards packets between them based on their destination IP addresses. A router can also perform DHCP (Dynamic Host Configuration Protocol) function, which means it can dynamically distribute IP addresses to devices on its network. A router can also provide other features, such as firewall, NAT (Network Address Translation), VPN (Virtual Private Network), and QoS (Quality of Service).

• Question 556:

  A technician is troubleshooting Wi-Fi connection issues on a customer's laptop. The laptop connects but intermittently disconnects. The technician has already confirmed the wireless card is properly installed, the router settings are correct, and the wireless signal strength is normal. Which of the following should the technician investigate next?

  A. Firewall settings

  B. MAC address filter

  C. Number of connected devices

  D. Radio frequency

  Correct Answer: D

  Explanation: The next thing that the technician should investigate is D. Radio frequency. Radio frequency is the range of electromagnetic waves that are used to transmit wireless signals. Different devices and networks use different radio frequencies, such as 2.4 GHz or 5 GHz, to communicate with each other. If there are multiple devices or networks using the same or overlapping radio frequencies, they can interfere with each other and cause Wi-Fi connection issues, such as intermittent disconnections, slow speeds, or poor quality . To fix this issue, the technician can try changing the radio frequency or channel of the router or the laptop, to avoid interference from other sources. The technician can also use a tool such as Wi-Fi Analyzer to scan the nearby wireless networks and find the best frequency or channel to use. Alternatively, the technician can move the router or the laptop to a different location, away from potential sources of interference, such as cordless phones, microwaves, Bluetooth devices, or other routers . The other options are less likely to be the reason for the issue. Firewall settings are software configurations that control the network traffic and security of a device. They may block some websites or applications from accessing the internet, but they should not affect the Wi-Fi connection itself. MAC address filter is a feature that allows the router to restrict access to specific devices based on their MAC addresses, which are unique identifiers for network interfaces. If the MAC address filter is enabled and the laptop's MAC address is not on the allowed list, it will not be able to connect to the Wi-Fi network at all, not intermittently. Number of connected devices is the amount of devices that are using the same Wi-Fi network at the same time. This may affect the network performance or bandwidth, but it should not cause intermittent disconnections, unless the network is overloaded or unstable. References: How To Fix WiFi Connection Problems - Help Desk Geek How to Fix Your WiFi Connection Problems - Lifewire Wi-Fi Analyzer - Apps on Google Play

• Question 557:

  A technician is troubleshooting a burning smell on a desktop computer. The technician determines that the odor is coming from inside the device.

  Which of the following should the technician do first?

  A. Unplug the computer.

  B. Locate a fire extinguisher.

  C. Call the fire department.

  D. Remove the desktop cover.

  Correct Answer: A

• Question 558:

  Which of the following are benefits of application virtualization? (Select two).

  A. The network works more quickly.

  B. Applications are easier to learn.

  C. RAM works more efficiently.

  D. The overall IT cost goes down.

  E. OS performance is superior.

  F. Upgrading applications is easier.

  Correct Answer: DF

  References:

  1: 5 Benefits of Virtualization - IBM Blog

  2: Benefits of Application Virtualization - AppsAnywhere

  3: What is Application Virtualization? | VMware Glossary

• Question 559:

  Which of the following best describes the primary function of a spam gateway?

  A. Serves as a repository for email routing logs

  B. Blocks unrequested ICMP packets from external networks

  C. Categorizes incoming network messages

  D. Mitigates DDoS attacks

  Correct Answer: C

  A spam gateway is a software solution that filters email messages based on various criteria, such as sender, recipient, subject, content, attachments, and URLs. A spam gateway categorizes incoming network messages as spam or nonspam, and either blocks, quarantines, or delivers them accordingly. A spam gateway can help protect email servers and users from malicious or unwanted emails, such as phishing, malware, or advertising. A. Serves as a repository for email routing logs. This is not the primary function of a spam gateway. Email routing logs are records of the path and status of email messages as they travel through the network. Email routing logs can help troubleshoot email delivery issues, but they do not filter or categorize email messages. B. Blocks unrequested ICMP packets from external networks. This is not the primary function of a spam gateway. ICMP (Internet Control Message Protocol) packets are used to communicate network information, such as errors, requests, or replies. Blocking unrequested ICMP packets from external networks can help prevent network scanning or denial-of-service attacks, but it does not filter or categorize email messages. D. Mitigates DDoS attacks. This is not the primary function of a spam gateway. DDoS (Distributed Denial-of-Service) attacks are attempts to overwhelm a network or server with a large amount of traffic from multiple sources. Mitigating DDoS attacks can help maintain network availability and performance, but it does not filter or categorize email messages. Reference: Gateway Spam Filter - SpamTitan Email Security1.

• Question 560:

  A developer is requesting permission to utilize client-side virtualization. The developer would like to write code in a setting isolated from other infrastructure to avoid negative impacts of experimental code. Which of the following provides the best solution for the developer?

  A. Cross-platform functionality

  B. Software compatibility

  C. Test case development

  D. Sandbox environment

  Correct Answer: D

  References:

  1: Client-side Virtualization ?CompTIA A+ 220-1001 ?4.2

  2: What is a Sandbox Environment? | VMware Glossary

  3: What is Sandbox Testing? - Definition from Techopedia