Comptia A+

A47. Which mobile device connection is commonly used for making payments at a store checkout?

A. NFC NFC (Near Field Communication) is designed to transfer small amounts of data wirelessly over a limited area. It's common to use a smart phone or smart watch with a credit card terminal to pay for goods or services.

A36. Which of the following BEST describes a Bluetooth network?

A. PAN A PAN (Personal Area Network) is designed for a small area and usually an individual person. Bluetooth devices such as headsets, speakers, and automobile connections are considered PANs.

A24. Which of the following ports are used for file transfers? (Select TWO)

A. 21 and E. 20 FTP (File Transfer Protocol) is a standard method of transferring files across different operating systems. FTP uses TCP (Transmission Control Protocol) port 21 for control messages and port 20 to transfer data.

64. A manager is able to receive email messages on their tablet, but they're having problems configuring the tablet to send email messages. Which of the following should be the FIRST troubleshooting step?

A. Check the SMTP settings If you're sending an email message from an email client, you're commonly using SMTP (Simple Mail Transfer Protocol). There are three SMTP configuration settings that are important; the SMTP server name or IP address, the SMTP username, and the SMTP password.

A31. A network administrator would like to enable DHCP on a laptop, but he would like the same IP address to be assigned to the laptop each time it starts. Which of the following would provide this functionality?

A. Create an IP reservation on the DHCP server A DHCP (Dynamic Host Configuration Protocol) server will automatically assign IP (Internet Protocol) addresses to devices on the network from an available pool. This means that the IP address for a device may change over time based on the IP addresses that are currently available in the pool. To force the same IP address assignment each time, the network administrator can create an IP reservation in the DHCP server that will associate a specific IP address to the MAC (Media Access Control) address of the laptop.

A19. The stylus on a Windows tablet will no longer interact with the user interface. Which of these would be the MOST likely cause of this issue?

A. Digitizer The digitizer is the component in a touch screen that converts the analog input from a fingerprint or stylus into a digital input that can be understood by the computer. If the digitizer is having an issue, then problems will occur with any direct screen input.

84. A server administrator is upgrading the memory in a web server from16 GB of non-ECC RAM to 64 GB of ECC RAM. After startingthe system with the new memory, the computer beeps and nothing is displayed on the screen. Changing the number and location of new RAM modules results in the same beeping sounds and blank screen. After replacing the original 16 GB modules, the system starts normally. Which of the following is the MOST likely reason for this issue?

A. The new memory is not compatible with the motherboard ECC (Error Correcting Code) memory is designed to detect errorsand correct them on the fly. Not all systems use ECC memory, and it's important that the memory matches the motherboard requirements. If non-ECC RAM (Random Access Memory) is replaced with ECC RAM and the system fails to start, then the issue is most likely associated with the change from non-ECC to ECC RAM.

69. A site manager has found that her smartphone has a short battery life when used at work, and the battery life is normal when working from home. The work location has limited mobile service reception, but most office services are provided over the local 802.11 Wi-Fi network. The site manager does not enable Bluetooth on her smartphone. Which of the following would be the BEST way to extend the battery life of her mobile device?

B. Disable the cellular radio at work When a mobile provider's network isn't available, a phone will constantly try to reconnect to a cellular network. This reconnection process constantly uses the radio, and subsequently more of the battery is used in the process. To conserve battery life, it would be useful to disable the cellular network connection when outside of a coverage area.

68. A system administrator has configured a VM for dual processors, 16 GB of RAM, and 120 GB of disk space. Which of the following is required to start this VM?

B. Hypervisor A hypervisor, or virtual machine manager, is the software that manages the virtual platform and guest operating systems.

A6. The printer in the accounting department has stopped all printing processes. The print queue shows that there are seven jobs in the queue that are waiting to be printed. Which of the following would be the BEST next troubleshooting step?

B. Restart the printer's spooler The print spooler is the software responsible for storing print jobs and sending them to the printer. If the printer spooler has failed or has stopped, then none of the print jobs will be sent to the printer.

A51. A company is developing an internal application that will run on smartphones and tablets. What should the application use to simplify the authentication process?

B. SSO SSO (Single Sign-on) is a method of centralizing authentication to a common database. This allows the users to authenticate once with a single username and password, and those credentials will be used across all services.

A35. While configuring a new workstation in the lab, one of the engineers recommends using 255.255.255.0. What part of the configuration is this associated with?

B. Subnet mask Subnet masks are used by the local device to determine what subnet it's connected to. Subnet masks are a series of binary ones that are used to "mask" the subnet address from the host address. Instead of representing this mask in binary, it's almost always shown in decimal form. Common decimal representations of subnet mask start with 255, such as 255.255.255.0.

A16. When a user starts their computer, the screen remains blank and the computer beeps twice. Which of these would be the MOST likely cause of this issue?

B. The memory is faulty The POST (Power On Self Test) is the initial hardware check that occurs during the startup process. If a major hardware component is faulty, the computer will beep and a message will be displayed on the screen. If the issue is related to a critical component, the computer will not be able to display a message on the screen and instead will beep a certain number of times as a code to specify the error.

A9. A network connection in a conference room was installed years ago, and there's no documentation for the cable run. Connecting a device to the cable results in a successful Ethernet connection, so the other end of the cable should terminate somewhere in the wiring closet. Which of these tools would be the best choice to find the other end of the network connection?

B. Tone generator A tone generator is used to produce an analog tone on the cable, and an inductive probe is used to "listen" for the tone on the other end of the cable.

A27. A network administrator is troubleshooting a network outage, and she believes that the issue is related to a bad switch. The old switch is replaced with a newer model and the cabling is moved to the new switch. Which of the following should be the NEXT troubleshooting steps? (Choose TWO)

B. Verify full system functionality, and E. Document the findings Once the theory has been tested, a plan of action has been determined, and the plan has been implemented, it's important to verify that full system functionality has been restored. After all of this work, it's useful to document the problem, the proposed solutions, and the ultimate fix. This problem might occur again, and it would be useful to have some historical documentation on how to address the issue.

A45. Which wireless standard operates in the 5 GHz band and provides over 5 Gbit/sec of throughput?

C. 802.11ac 802.11ac operates in the 5 GHz band and can provide almost 7 gigabits per second of total throughput.

A8. A computer has been configured with an SSD, a high-end video adapter, and the maximum amount of RAM. Which of the following would be the MOST likely use for this computer?

C. CAD/CAM workstation The graphical designs created by a CAD/CAM (Computer Aided Design / Computer Aided Manufacturing) computer requires high-speed SSD (Solid State Drive) storage, high-end video, and as much RAM as possible.

A54. An engineer has manually configured IP addresses for a small office that uses a cable modem for Internet connectivity. However, none of the devices configured with a manual IP address are able to browse Internet websites. All devices are connected to the cable modem with twisted-pair Ethernet cables. This is the configuration of one device: IP address: 192.168.1.7 Subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 DNS: 192.168.1.7 The engineer can successfully ping the local IP address and the default gateway address. Which of the following should be the NEXT troubleshooting step?

C. Check the DNS configuration One of the most noticeable of the IP (Internet Protocol) configuration settings was that the DNS (Domain Name Service) server IP address was configured to be the same as the local device. Since DNS servers are commonly separate (and often remote) devices, it would be unusual to see a DNS configured with the same IP address of the local device. The next step should be to confirm the DNS settings with the local network administrator.

A20. A user in the accounting department needs to output a form on the laser printer that prints on both sides of the page. Which of the following options should be configured in the accounting software?

C. Duplex The duplex setting prints the output on both sides of the page, and a printer that supports duplexing will flip the page over without any manual intervention from the user.

A32. A user is complaining about slow network performance from their workstation. A network technician checks the data closet and finds that the wires are not properly seated in the 110 block. Which of the following should the technician use to correct this issue?

C. Punch-down tool A punch-down tool is used to firmly "punch" a wire into a wiring block, such as a 110 block. These blocks are usually located in a wiring closet or on the back of a patch panel.

A43. A system administrator is using a maintenance kit on a network- connected laser printer. Which of the following should be the LAST step when performing this maintenance?

C. Reset the page counter The page counter is a helpful metric to determine how much the printer is used, which in turn determines when the next maintenance should be scheduled. After performing the current maintenance cycle and verifying the printer's operation, the page counter should be reset so that the next maintenance time-frame can be properly estimated.

A42. A member of the management team is developing a product based on wearable technology. Which of the following would BEST describe this product type?

C. Smart watch Wearable technologies are devices that can be worn all day as an extension of a phone and body. Common wearable technologies would be smart watches and fitness monitors.

A33. A user has just connected to a new wireless network, but they cannot view any Internet web sites. Their network configuration shows the IP address as 169.254.228.109, the subnet mask is 255.255.0.0, and they have not been assigned a default gateway. Which of these is the MOST likely cause of this issue?

C. The DHCP server is down If a DHCP (Dynamic Host Configuration Protocol) server is not responding, then the local workstation will configure itself with an APIPA (Automatic Private IP Addressing) address. The usable APIPA addresses are in the range between 169.254.1.0 through 169.254.254.255. An APIPA address is a link-local address, so network communication is limited to the local IP subnet.

76. A technician has connected a laptop to an LCD display. The LCD display is presenting the correct information, but all of the content appears to be compressed vertically. Which of the following is the MOST likely reason for this issue?

C. The laptop resolution is incorrect An LCD (Liquid Crystal Display) has an optimal resolution that is based on the physical dimensions of the display. If the resolution settings in the operating system don't match the physical display, then the information on the screen may appear blurry or skewed. Configuring the correct resolution in the operating system will commonly resolve this issue.

A17. A firewall is configured to block email transfers from a remote server. Which of the following ports is the firewall blocking?

D. 25 Port 25 is used by SMTP (Simple Mail Transfer Protocol) to send email messages from devices and transfer those messages between SMTP email servers.

74. A manager is complaining of short battery life on their laptop when traveling. Which of the following should be disabled to provide the BEST battery conservation?

D. Bluetooth Bluetooth, and any radio-based communication, constantly uses some of the power, and those systems can quickly deplete the battery. If you're not going to be using wireless devices, then it's useful to place the device in airplane mode or disable Bluetooth, 802.11, and cellular radios.

A30. In which of the following would a Lightning cable MOST likely be used?

D. Charge a mobile device The Lightning interface is a proprietary interface used exclusively on mobile devices from Apple. The Lightning interface is a common connection for data transfers and power charging for most Apple mobile devices.

A26. A system administrator has tripped over an Ethernet cable and the cable's RJ45 connector has broken. Which of the following should be used to resolve this issue?

D. Crimper A crimper is used to attach a modular connector to a cable. In this example, a new connector can be reattached to the cable using an RJ45 (Registered Jack type 45) crimper.

60. A server administrator has been asked to troubleshoot a system thathas been slowing down over time. While examining the computer, the administrator can hear a series of clicks from the inside of the case. Which of the following should be the FIRST step to address this issue?

D. Perform a full backup of the server A clicking noise indicates some type of hardware issue with the computer, so the first step would be to confirm that a recent backup is available for all of the data on this system. If the computer fails completely, at least the data will be secure.

81. A company has designed an application platform to scale up when the application use increases during the day, and scale back down at night. Which of the following BEST describes this characteristic ofcloud computing?

D. Rapid elasticity Scaling up and down as needed is a significant characteristic of cloud computing. This allows organizations to manage and pay for resources when busy, but save time and money when the resources are no longer needed.

A21. A user needs to connect their laptop to the wired Ethernet network, but the laptop does not have an integrated Ethernet interface. Which of the following would allow the laptop to connect to an Ethernet network? (Pick TWO)

A. Docking station C. USB to Ethernet adapter There are a few ways to create a wired Ethernet connection on a laptop computer. Using a docking station is a common solution that provides many different interfaces, and often includes the ability to install a full- size PCI Express (Peripheral Component Interconnect Express) adapter. A USB (Universal Serial Bus) to Ethernet adapter is a simpler solution that only provides an Ethernet interface, but it's much more portable than a docking station.

A15. Which of the following would be MOST likely found on a DVD-ROM?

A. Document archive The DVD-ROM (Digital Versatile Disc - Read Only Memory) format has the advantage of a relatively large storage area and the ability to write once and never worry about an accidental deletion. The storage of documents and other files is a common use of DVD-ROM optical discs.

A55. A user in a SOHO office needs to connect a laptop to the DSL router. Which of the following cables should be used for this connection?

A. Ethernet A SOHO (Small Office Home Office) with a DSL (Digital Subscriber Link) modem will commonly connect to the modem using an Ethernet cable connection.

A41. A user has connected their laptop to an LCD projector, but video isn't displaying through the projector. What laptop key is often combined with the "CRT/LCD" key to control the video output?

A. Fn The laptop function key (Fn) is usually combined with another laptop key to control features such as volume, wireless adapter functionality, and video output. This allows the laptop manufacturers to add additional functionality to the laptop keyboard without adding any physical keys or switches.

A49. When printing a document on a laser printer, a user finds that all of the text on the page smears when touched. What is the MOST likely cause of this issue?

A. Fuser is damaged The fuser permanently melts the toner to the paper using heat and pressure. If the fuser is not working, the toner will easily smear when touched.

A12. A user is having an issue with a smartphone not recognizing their location on a map. All other Internet and phone features are working properly. Which of the following would be the MOST likely cause of this issue?

A. GPS is disabled The GPS (Global Positioning System) option on a smartphone provides precise location services for apps and utilities. The map feature on the smartphone uses the GPS to help determine the location, speed, and direction of the user.

A7. A system administrator has connected an external USB drive to a computer to transfer some documents. When booting the computer, the system tries to boot from the external drive and gives an error message. Which of the following would be the BEST way to prevent the USB drive from booting?

A. Modify the BIOS to boot from the internal hard drive The boot order is managed in the system BIOS, and one way to avoid the computer from attempting to boot from an external storage device is to move the internal drive to have a higher boot priority.

A44. An application developer needs to test an application across all of the operating systems used by the company. Each operating system will be tested individually in a lab environment. The company would like to minimize any additional hardware purchases for this project. Which of the following would be the BEST way to test this application?

A. Purchase a system that is configured just above the hardware requirements for the highest-end operating system. Create separate VMs for each operating system. Creating virtual machines for these tests would be a great way to minimize hardware costs, and the machine used for the testing should be able to properly virtualize the testing OS while the host OS is running. Purchasing a system that is slightly more powerful than the highest-level operating system configuration should cover any technical requirements.

A22. A server administrator has received an alert showing that one drive in a RAID 1 array has failed. Which of the following would be the best way to resolve this alert?

A. Replace the bad drive and resync the array A RAID 1 (Redundant Array of Independent Disks, level 1) array is a mirrored array, which means that all of the information on one physical drive is also copied and maintained on a separate drive. If one drive fails, then the drive with the redundant data continues to be available. To repair the array, the bad drive needs to be replaced and the data from the redundant drive is synchronized to the new drive.

A18. A technician is connecting a laptop to an LCD projector in a conference room. The display on the laptop works properly, but the projector image is constantly flickering and pixelating. The technician has modified the resolution and refresh rates, but the projector image continues to flicker. Which of the following would be the BEST next troubleshooting step?

A. Replace the video cable A display issue associated with flickering and poor video quality would commonly point to the connection between the video adapter and the display device. In the case of an LCD (Liquid Crystal Display) projector, there's sometimes a very long (and very worn) cable that can cause signal issues to show on the projected image.

58. A system administrator created a series of VMs that will use a portion of a server's available physical memory. Which of the following describes this cloud computing characteristic?

A. Resource pooling Resource pooling places all of the computing resources in one place, and then distributes from the pool when needed. A VM (Virtual Machine) manager using a portion of available physical memory is taking advantage of resource pooling.

A56. A user in the accounting department has turned on their computer and received the message "Date and Time not set." Which of the following would be the MOST likely reason for this message?

A. The motherboard battery has discharged The battery on a motherboard is used to maintain the date and time configuration when the computer is not connected to a power source. If the battery has discharged, the computer will not be able to maintain the proper time and an error message will appear during startup.

86. Which of the following is used to forward traffic based on a destination MAC address?

A. Unmanaged switchSwitches determine how traffic is forwarded based on the destination MAC (Media Access Control) address in the frame. The qualification of managed or unmanaged is not important in this case, since both typesof switches make forwarding decisions the same way. The difference between a managed and unmanaged switch are based on other features not associated with the forwarding process.

59. A group of wireless laptops in a conference room are reporting intermittent connectivity issues. The wired computers in the room are not experiencing any network problems. A check of the laptops shows that the IP addresses and configurations appear to be correct. Which of the following would be the best NEXT troubleshooting step?

A. Verify the wireless signal strength Since the wired devices are working properly, the troubleshooting process should focus on the wireless network. The connectivity is also intermittent, which means that the network is operating normally during certain periods. This would move the focus from the network configuration to an availability issue.

A23. A system administrator is building a server for a data center in another country. The server will manage a print queue and provide a local storage partition for temporary file transfers. Which of the following power supply specifications will be the MOST important for this server?

A. Voltage input options Connecting to the power source in a different country is an important consideration when selecting a power supply. If the voltage specifications are incorrect, the server may not operate at all or components in the server may be damaged. Many servers use auto-switching power supplies are compatible with the power systems in other countries.

78. A network administrator is installing a wireless access point in a new conference room. Which of these settings would provide the BEST security for this installation?

A. WPA2 encryption Configuring WPA2 (Wi-Fi Protected Access II) encryption would prevent unauthorized users from accessing the wireless network and would encrypt the data sent over the wireless network.

61. When pressing the power button on a desktop computer, the power indicator lights up but the computer does not display any message on the screen. The voltage at the wall outlet has been checked with a multimeter and it appears to be normal. The motherboard power connector voltage was checked, and the 12 volt pin was showing 6 volts. What is the MOST likely cause of this issue?

B. The power supply is faulty If the 12 volt line from the power supply to the motherboard is showing 6 volts, it's likely a problem with the power supply itself. A power supply replacement should be the next troubleshooting step for this system.

A40. A user would like to access email from their Windows 10 laptop using a smartphone's Internet connection. Which of these technologies needs to be enabled on the laptop?

B. Bluetooth Bluetooth can be used to tether the laptop to the smartphone, and the smartphone can then be used to allow access to resources on the Internet.

72. Which of these connection types use coax to provide Internet data, voice, and video over the same wire?

B. Cable Cable television brought cable into everyone's home, and now they include voice and Internet services on the same coax cable.

A53. What is the minimum category of unshielded copper cable that would run a 10 gigabit per second Ethernet link with a fifteen meter distance?

B. Category 6 The physical characteristics of networking cables are separated into categories. A category 6 cable can support a ten gigabit per second 10GBASE-T network to a distance of thirty-seven to fifty-five meters.

62. A manager in the marketing department is printing many copies of a twenty page document. The manager would like to print all twenty pages of the document before the next copy begins printing. What setting should the manager configure in the output settings?

B. Collate The printing of multiple copies in their proper order is called collating the output. If the output was not collated, all of the page one copies would print, then all of the page 2, etc.

87. A system administrator made some BIOS changes to a desktop computer running Windows 10, and now this message appears when starting the computer: "This drive can only boot in UEFI mode." Which of the following would be the BEST next troubleshooting step?

B. Enable Secure Boot Secure Boot is part of the UEFI (Unified Extensible Firmware Interface) standard for a computer BIOS (Basic Input Output System). Secure Boot ensures that the underlying operating system has not been modified by malware or any other process.

A52. One of the software developers in your company would like to install six virtual machines on their desktop for application testing. Each VM would run a different operating system, but only one VM would be running at any particular time. Which of the following components would be the MOST important for this configuration? (Choose TWO)

B. Hard drive space and D. System RAM Six virtual machines will require enough hard drive space to install all six operating systems, so it will be important to have enough free storage space. Running more than one operating system at a time on a computer also requires additional memory, so having enough system RAM is also an important consideration.

A29. What type of device connects multiple computers to the network, but becomes less efficient as network traffic increases?

B. Hub A hub operates as a multi-port repeater, where incoming traffic is repeated to every other port in the hub. If more than one device attempts to do this at the same time, these conflicting signals are called a collision. Each time a collision occurs, the sending devices have to stop transmitting, wait a random amount of time, and try sending traffic again. If many devices are sending large amounts of data, the overall network efficiency will decrease as the number of collisions increase

A48. A company is planning to use a cloud-based file storage service to store, share, and synchronize files across all company devices. Which of the following would be the MOST important resource requirement for this service?

B. Internet bandwidth Cloud-based services work almost exclusively over the network, and file synchronization services will require additional bandwidth to process constant updates and changes over the network.

A13. A client's laptop sounds like it is booting normally, but nothing appears on the LCD display. After closer inspection, you notice the output is visible but it's too faint to clearly see anything. What is the MOST likely cause of this issue?

B. Inverter The inverter powers the CCFL (Cold Cathode Fluorescent Lamp) LCD (Liquid Crystal Display) backlight, allowing you to easily view the pixels on the display. Most newer laptops will use LED (Light Emitting Diode) backlights that use the existing DC (Direct Current) power and don't require an inverter.

A14. A graphics designer is experiencing increasing delays when accessing files on her hard drive. The user maintains a daily backup of all data on the drive. Which of these would be the BEST next troubleshooting step for this issue?

B. Perform a hard drive diagnostic Before making any changes, it would be useful to gather more information about this problem. A hardware diagnostic would determine if the hard drive itself is working properly. If the hard drive is operating normally, the troubleshooting process can then shift to the operating system and software.

A39. A server administrator has been asked to configure the storage requirements for a new database server. The database owner requires the fastest performance, and redundancy if a single drive fails. The storage array should support 8 TB or larger of available space. Which of the following options would be the BEST choice?

B. RAID 5 with 10,000 RPM, 5 TB drives The question is focused on three requirements; performance, drive space, and redundancy. This option provides the highest number of RPMs (Revolutions Per Minute), the RAID 5 (Redundant Array of Independent Disks) redundancy, and enough storage to support more than 8 TB (terabytes) of drive space.

89. A technician is installing a DSL modem at a SOHO facility. Which of the following connectors would be used to connect the DSL modem to the Internet provider line?

B. RJ11 The RJ11 connector (Registered Jack 11) is the modular connector commonly associated with analog POTS (Plain Old Telephone System) lines. Since DSL (Digital Subscriber Line) uses the existing telephone lines, the DSL connection from an Internet Service Provider will also use those same lines with RJ11 connectors. These connectors will be the same for both residential, large-scale commercial, and SOHO (Small Office / Home Office) use.

A57. A technician has just replaced a broken touch screen on a laptop used for trade shows. However, the touch functionality is no longer working on the display. Which of the following would be the MOST likely reason for this issue? (Select TWO)

B. The replacement screen is not a touch screen, and When replacing a touch screen display, it's important to make sure the replacement is also a touch screen unit. The two look almost identical, so it would be a common mistake to accidentally install the wrong hardware. E. The digitizer is not properly connected After installation, a separate connection is often required to enable the digitizer. If the display panel is the correct hardware, then it's important to check that all of the cables are connected, especially the cables specific to the digitizer features.

A10. A client's laptop has recently had its internal mini-PCIe wireless adapter card replaced. Although Device Manager shows the card working properly, the wireless card management software shows very low signal strength. The wireless card keeps dropping its wireless connection and will not maintain a consistent network link. What is the most likely reason for this problem?

B. The wireless adapter antenna cable isn't connected The antenna cable connectors are very small, and it's easy to leave them disconnected after working inside of a laptop. A missing antenna cable will cause the wireless signal strength to be very low, and often there's not enough signal strength to reliably send or receive data.

67. A new SOHO remote site includes the installation of IoT lights, thermostats, and cameras. Which of the following would be the BEST way to protect the rest of the network against IoT hacking?

C. Connect the IoT devices to a DMZ One of the concerns around IoT (Internet of Things) is that a single exploit of an IoT device can potentially put the entire network at risk.To avoid this issue, it's useful to put IoT devices into their own protected network, such as a DMZ (Demilitarized Zone). This means that if an IoT device was exploited, the attacker would not have any access to the more important devices and services on the rest of the network.

A37. Sam, a user in the accounting department, is migrating from Android to iOS. She would like all of her emails, contact lists, and calendar events to be moved to her new phone. Which of the following would be the BEST way to accomplish this task?

C. Connect the new phone to the corporate Exchange server Microsoft Exchange manages email, calendar events, and contact information in a single database. Using this central database, Exchange can synchronize all of this information to both iOS and Android smartphones.

A38. The internal Bluetooth adapter of a laptop has failed, and the user would like to get a repair estimate. Which of the following would be the BEST way to determine an accurate price of an exact replacement?

C. Disassemble the laptop case and document the process Although the operating system driver can sometimes provide details about what's inside, they often can hide details about the specific hardware. The only way to know the exact make and model of the Bluetooth adapter is a physical examination. Some laptops are easier to open than others, so it's useful to document the process used to gain access to the Bluetooth hardware.

73. A desktop administrator has been asked to troubleshoot a laptop computer that beeps during the power on process while the laptop screen remains dark. Which of the following would be the best NEXT troubleshooting step?

C. Establish a theory Once an issue has been identified, it's important to consider all of the possible reasons the problem may have occurred. It's useful to list all possible causes, even those that might not be obvious.

A90. Which of the following would be the BEST choice for capturing an image from a printed page and saving it on a computer?

C. Flatbed scanner A flatbed scanner is designed to capture images from paper and convert them into digital form.

A28. A gaming enthusiast is building her own computer to provide the best performance with 3D action games. Which of these would be the most important components of a gaming PC? (Choose TWO)

C. High-end GPU, and E. SSD The GPU (Graphics Processing Unit) is an important consideration when building a gaming computer. Many computer games also read extensively from storage, so the speed of an SSD (Solid State Drive) will provide the fastest possible data access.

75. A company is deploying cloud-hosted virtual desktops for training room classes. The VMs have already been configured in the cloud. Which of the following is required to access these VMs using thin clients in the training room?

C. Mouse, keyboard, and monitor Cloud-hosted virtual desktops are a type of VDI (Virtual Desktop Infrastructure). Access to the desktop is provided over a remote access- style client, and access can be provided from almost any operating system using a low-bandwidth network connection. The client device is usually a thin-client that has a minimum set of resources, a mouse, keyboard, and a monitor.

A25. Which of these technologies do not require a backlight to provide a viewable display?

C. OLED An OLED (Organic Light Emitting Diode) display emits light when a current is provided to an organic compound, so a backlight would not be necessary with an OLED display.

A46. A user in the manufacturing department reports that every page printed from the central networked laser printer has a single black line that extends from the top of the page to the very bottom. Which of the following is the MOST likely cause of this issue?

C. The photosensitive drum is damaged A scratched photosensitive drum would cause a line to appear down the printed page as the toner sticks to the scratched part of the drum. Some printers allow individual drums to be replaced, and others require the entire toner cartridge with drum to be replaced. Once the scratched drum is replaced, the black line will no longer appear on the printer output.

70. A desktop computer has just abruptly shut off, and pressing the power button doesn't restart the system. There are no fans spinning, no lights are on, and no messages appear on the display. Which of these would be the MOST likely cause of this issue?

C. The power supply is faulty A faulty power supply could cause a loss of power across all computer systems, and the lack of fans, lights, and output on the display would be the most likely cause given the available options.

A11. A user has powered on their computer and received the message "Operating system not found." A check of the system shows that the hard drive cables are properly connected. Which of the following would be the NEXT best troubleshooting step?

D. Check for removable drives If a USB (Universal Serial Bus) storage device is connected to a computer and the BIOS (Basic Input/Output System) is checking USB devices before the primary storage drive, the "Operating system not found" error could appear with some USB devices. To avoid this error, the boot order in the BIOS can be changed, or the USB device can be disconnected during the boot process and reconnected after the operating system has started.

A50. A manager's computer is able to connect to Internet sites while in conference rooms or in the building courtyard. When the laptop is brought back to the manager's desk and placed into the docking station, the Internet access is unavailable but all other features are working. Which of the following should be the FIRST troubleshooting task for this issue?

D. Check the docking station network cable The Internet access on the laptop appears to be working properly on the wireless network, but the docking station connection would use a wired Ethernet connection. If everything else is working properly, then the issue would most likely be associated with the Ethernet interface in the docking station.

71. What kind of device is commonly used to filter traffic based on a predefined set of rules?

D. Firewall A firewall is designed to evaluate inbound traffic, compare that traffic to predefined security policies, and then allow or block that traffic from passing through the firewall. Firewalls are common security appliances between an organization's internal network and the Internet.

77. An engineering firm is upgrading their storage array to include additional drive space for documents and designs. The primary goal is to provide high performance and uptime, even if two drives were to fail. Which of the following would be the BEST choice for this firm?

D. RAID 10 RAID (Redundant Array of Independent Disks) is a method of combining storage drives together to add speed and/or redundancy. A RAID 10 array is a nested RAID configuration that creates a mirrored set of RAID 0 drives. As long as only one drive fails in each RAID 0 mirror, the redundancy will remain valid and the user's data will continue to be available.

88. A user has spilled coffee on their laptop keyboard, and now the system will not start. The laptop contains a presentation for an upcoming conference. Which of the following would be the BEST way to gain access to this presentation?

D. Remove the storage drive and place it into an external enclosure The current laptop will not boot due to the liquid damage, so the only option would be to remove the storage device from this laptop and use a different computer to access the required presentation files.

82. A user's tablet has stopped responding to any type of finger input on the screen. The clock and other tablet functions appear to be working. Which of the following would be the BEST way to correct this issue?

D. Restart the tablet Before making any changes to hardware or software, it's useful to restart the tablet to see if a software glitch may have been the underlying issue.

63. A remote user is visiting their corporate office. They are trying to connect their laptop to the office wireless network, but the network name does not appear in the list of available wireless networks. Which of the following would be the most likely reason for this issue?

D. SSID broadcasts have been disabled The name of the wireless network, or SSID (Service Set Identifier) is normally broadcast to all nearby devices. If the SSID broadcasts are administratively disabled, the network name will not appear in the drop- down list of available wireless networks.

85. A workstation has been assigned an APIPA address. Which of the following would be the MOST likely reason for this configuration?

D. The DHCP server is down APIPA (Automatic Private IP Addressing) is an IPv4 (Internet Protocol version 4) link-local addressing scheme. If a device does not have a static IP address and an address is not available from a DHCP server, the local device will assign itself an APIPA address so that communication to other APIPA devices on the same subnet will be available.

A university library needs to purchase a new printer for an open study area. The primary requirement of this printer is to be as quiet as possible. Which of these printer types would be the best fit for this requirement?

D. Thermal Of the available options, thermal printers are the quietest. The only moving parts in a thermal printer are the motors that push the paper through the printer, and those motors are small and run almost silently.

A34. A help desk technician needs to use different Windows versions to study for an industry certification exam. The technician currently uses a Windows desktop computer with 4 GB of RAM and a 750 GB free on the hard drive. Which of the following would be the BEST way to perform this task? (Choose TWO)

D. Upgrade the system RAM, and E. Install Windows guest VMs The easiest way to use multiple operating systems on a single machine is to run them as virtual machines. Although there's plenty of storage space for multiple virtual machines, the 4 GB (Gigabytes) of RAM (Random Access Memory) on the host computer is too small to support multiple Windows operating systems at the same time. Once the memory upgrade is complete, it's a relatively easy process to install the guest virtual machines on the existing hard drive.

83. A user would like to connect a tablet to their laptop computer using 802.11, but they are in a location without a wireless access point. Which of the following would be the BEST way to make this connection?

D. Use ad hoc mode Ad hoc mode allows two devices to directly communicate over an 802.11 wireless link without using an access point.

65. A user is reporting that a shared laser printer in the marketing department is not printing from one particular application. The front panel of the printer shows that the printer is online and ready to receive print jobs. Other users in the department are able to successfullyprint to the printer. Which of the following would be the BEST next troubleshooting step?

D. Verify the network printer name in the application We know that the printer is working normally because other people are able to print successfully. This also means that the spooling process is working and that the print server is successfully queuing the print jobs. Given the other options, it's most likely that the user is directing the print job to a different printer.

66. A network administrator is connecting four company locations that reside in different countries. Which of the following would BEST describe this configuration?

D. WAN A WAN (Wide Area Network) connects LANs across a long geographical distance. Once the link extends past the local city area, the connection would be considered a WAN link.

80. Which of the following would be the BEST choice for reading textbooks in bright sunlight?

D. e-Reader e-Readers are standalone book and magazine reading devices that are often designed with electronic paper or electronic ink technology. The electronic ink screens on the e-Readers are specifically designed for reading text-based content in bright sunlight.