WGU D316 IT FOUNDATIONS OA ACTUAL EXAM STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH CORRECT DETAILED ANSWERS || 100% GUARANTEED PASS RECENT VERSION

WGU D316 IT FOUNDATIONS OA ACTUAL EXAM STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH CORRECT DETAILED ANSWERS || 100% GUARANTEED PASS RECENT VERSION 1. How many types of DVI connectors are there - ANSWER 5 DVI-A DVI-D (Single Link), DVI-D(Dual link) DVI-I(Single Link), DVI-I(Dual link) 2. What outputs does DVI-I support? - ANSWER Analog equipment and digital output. 3. What output does DVI-A support? - ANSWER Only Analog 4. What output does DVI-D support - ANSWER Only Digital 5. What resolution does VGA support? - ANSWER up to HD (1920x1080) 6. What does SCSI stand for? - ANSWER Small Computer System Interface 7. What does IDE interface stand for? - ANSWER Integrated Drive Electronics Interface 8. What is an IDE interface? - ANSWER A mass storage interface used for desktop PCs 9. How many host adapters does an IDE have? - ANSWER 2 IDE1 channel and IDE2 channel Primary (PRI IDE) and secondary (SEC IDE) 10. What is a Serial port - ANSWER a legacy connection where data is transmitted over one wire one bit at a time. Used Start, stop and parity bits to format and verify data transmission. also known as the RS-232 interface supports data rates up to about 115 Kbps only 11. What were PS/2 serial ports used for - ANSWER To attach mice and Keyboards 12. name common legacy interfaces - ANSWER VGA, DVI, PCI, EIDE/PATA, SCSI and RS-232 serial 13. name common modern interfaces - ANSWER USB/Thunderbolt, HDMI, DisplayPort, PCIe, SATA, and M.2 14. Define SATA - ANSWER Serial Advanced Technology Attachment Interface ports on the mother board to connect fixed and removable drives. (disc drives, tape drives etc) connected to power via SATA power or Molex Connector. 15. What is a M.2. Interface - ANSWER An adapter card inserted and screwed in to the motherboard. 16. What is Double Data Rate SDRAM (DDR SDRAM) - ANSWER RAM that makes two data transfers per clock cycle. 17. Describe SDDRAM - ANSWER Synchronous Dynamic RAM used today in RAM DIMMS Runs in sync with system clock runs faster than DRAM Has 8 byte wide bus runs at mhz times the amount of bytes includes clock speed in its name 18. Describe DDR - ANSWER Double data rate sends double the amount each clock cycle uses rising and falling edges of of clock signal to send data superior to non DDRRAM will include clock speed and bandwitdth in its name. The peak transfer rate is 1600 MBps 19. Describe ECC RAM - ANSWER Error Correcting Code Used in workstations where servers must remain online at all times. Detects if the data was correctly processed by the memory module makes corrections if necessary has 9 memory chips. 20. What does the CPU do? - ANSWER central processing unit executes program instruction code 21. Define a register - ANSWER a temporary storage area available to the different units within the CPU working at the same clock speed as the CPU 22. Define a Cache - ANSWER a small block of memory that works at the speed of the CPU or close to it, 23. Explain x86 CPU Architecture - ANSWER Manufactured by intell and AMD structured on CISC, Complex instruction set computing 32 bit instruction set. complex instruction set. 24. Explain ARM CPU - ANSWER Ran on modern mobile devices (phones) also used in low power electronics (toys microwaves etc) less complex instruction set. not as much power needed to run processor or device structed on RISC reduced instruction set computing 25. what are x64 CPU - ANSWER A 64 Bit instruction set capable of running 64 bit code. can run 32bit software also know as AMD64 by AMD also known as EM64T or Intel 64 by Intel 26. What version of x86/x64 can an ARM device run - ANSWER An emulation 27. Explain the n C/ n T notation - ANSWER number of cores and the number of threads ex 8C/16T CPU 28. What is firmware? - ANSWER specialized program code stored in flash memory. 29. what are the 2 types of firmware - ANSWER Basic Input/Output System (BIOS) Unified Extensible Firmware Interface (UEFI) 30. Describe the Raid level pictured - ANSWER RAID level 1 (mirroring) 2 disk work together as exact copies of each other provides redundancy provides fault tolerance 31. ...is a part of the chipset that keeps track of the calendar date and time. Its a coin cell lithium battery. - ANSWER Real time clock (RTC) battery (CMOS) 32. How to fix "dim image" - ANSWER Use the OSD (on-screen display) to check the brightness and contrast controls to make sure they are not turned all the way down. 33. How to fix "fuzzy image" - ANSWER Output resolution does not match the display device's native resolution, the image will appear fuzzy. Use the OS to change the output resolution or update the driver. 34. How to fix "flashing screen" - ANSWER Check the video cable and connectors. A flickering or flashing image could also be caused by the display's backlight or circuitry starting to fail. 35. Dead Pixels - ANSWER Defects in a flat-panel monitor may cause individual pixels to be "stuck" or "dead." Fixed pixels can also sometimes be reactivated by gently pressing or tapping the affected area of the screen with a stylus or pencil eraser. 36. Burn-In - ANSWER a ghost image is "burned" permanently onto the display. use screensaver 37. How to fix "Incorrect color display" - ANSWER Color calibration (or workflow) refers to a process of adjusting screen and scanner settings so that color input and output are balanced. 38. Printer Wi-Fi connectivity can be established in two different ways: - ANSWER Infrastructure mode and WiFi Direct 39. Printer Property Traits: - ANSWER updating the driver, printing to a different port, sharing and permissions, setting basic device options (such as whether a duplex unit or finisher unit is installed), and configuring default paper types for different feed trays 40. Printer Preference Traits: - ANSWER orientation of paper or whether to print in color or black and white, Paper/Quality tab and Finishing tab, printing on both sides etc. 41. Types of Network scan services: - ANSWER Scan to email Scan to folder or SMB Scan to cloud 42. Laser Printer... - ANSWER most popular printer. Has 7 stages. Transferring stage moves the toner from the drum onto the print media. Uses TONER 43. ...is the process by which the printer determines the appropriate print density or color balance (basically, how much toner to use). - ANSWER Calibration 44. What comes in a Laser Printer maintenance kit? - ANSWER a set of replacement feed rollers, transfer roller, and fuser unit. 45. These are often used for good-quality color output, such as photo printing. They are slower and often noisier, except for low-volume, good-quality color printing. Uses Carriage system - ANSWER Inkjet Printers 46. 2 Inkjet Maintenance Operations: - ANSWER Print head alignment: If output is skewed. Print head cleaning: A blocked or dirty nozzle will show up on output as a missing line. 47. This printer strikes an inked ribbon against paper to leave marks. One common type is the dot matrix printer, which uses a column of pins in a print head to strike the ribbon. Tractor fed - ANSWER Impact Printer 48. On a LASER printer, a grinding noise indicates what? - ANSWER a problem with the toner cartridge, fuser, or other gears/rollers. 49. On an INKJET, a grinding noise typically indicates what? - ANSWER a fault in the carriage mechanism. 50. This printing defect is most likely to indicate that the toner cartridge needs replacing. - ANSWER Faded or faint prints defect 51. This printing defect; toner is poorly distributed (give the cartridge a gentle shake) or that the transfer roller is dirty or damaged. - ANSWER White stripes defect 52. This printing defect indicates that the primary charge roller is dirty or damaged or that the high voltage power supply to the developer unit is malfunctioning. - ANSWER Black stripes or whole page black defect 53. This printing defect; loose toner may be getting onto the paper. - ANSWER Speckling on output defect 54. This printing defect is due to dirty feed rollers or a damaged or dirty photosensitive drum. - ANSWER Vertical or horizontal lines defect 55. Toner not fused to paper printing defect - ANSWER Output that smudges easily indicates that the fuser needs replacing. 56. This printing defect is a sign that the photosensitive drum has not been cleaned properly. - ANSWER Double/echo images defect 57. This issue is the time it takes for a signal to reach the recipient. - ANSWER Latency 58. This issue is the amount of variation in delay over time and network technicians can measure it by sampling the elapsed time between packets arriving. - ANSWER Jitter 59. ______ is a mail retrieval protocol that supports permanent connections to a server and connecting multiple clients to the same mailbox simultaneously. - ANSWER Internet Message Access Protocol (IMAP) 60. A manufacturing firm uses an older Windows NT computer to operate a unique piece of machinery. To support such a legacy system on the network, what common port settings are enabled for communications? - ANSWER 137-139 NETBIOS 61. What is the normal size for a laptop magnetic drive? - ANSWER 2.5in 62. A systems administrator is wanting to use a process in which the TCP/IP protocol is used to query and update an X.500 directory. What can be used to accomplish this task? - ANSWER LDAP 63. How many binary digits are found within a media access control (MAC) address? - ANSWER 48 64. The hypervisor is a part of a bare-metal platform and managing access to the host hardware directly. - ANSWER Type 1 Hypervisor 65. Which virtualization solution that separates host resources for each instance that is running at the operating system level? - ANSWER Container 66. Antenna must be provisioned with a motor so that it can periodically realign with the array. "phased array" - ANSWER Low Earth Orbital Satellite Internet Access (LEO) 67. Uses ground-based long-range fixed access wireless technology. - ANSWER Wireless internet service provider (WISP) 68. Also referred to as a touch screen. Its sandwiched between a layer of protective glass and the display panel. - ANSWER Digitizer 69. Number of disks for RAID configurations... - ANSWER RAID 0: two or more (no redundancy) RAID 1: typically two (mirrored discs) RAID 5: atleast 3 (striping w/ parity) RAID 10: atleast 4 (striping combined with parity) 70. In a modern mobile device, how can a UART be utilized? (Universal asynchronous receiver transmitter) - ANSWER Bluetooth and USB 71. After eliminating patch cables as a probable cause for internet connectivity issues, what is the next step? - ANSWER Test for bad ports using a loopback tool. 72. What is a "chip creep"? - ANSWER Chip creep is where an adapter works loose from its socket over time. This may happen perhaps because of temperature changes causing the plastic to flex over time. Dust and dirt can cause chip creep in a SATA too. 73. What properties are characteristic of the secure boot process? - ANSWER The firmware is configured with cryptographic keys. The operating system boot loader is digitally signed. 74. This hypervisor is a part of a bare-metal platform and manages access to the host hardware directly. - ANSWER Type 1 Hypervisor 75. When replacing components such as a keyboard or touchpad, a connection is made to the motherboard via what? - ANSWER A data cable, typically with a flat ribbon cable type. 76. How is dBi (decibels isotropic) measured? - ANSWER Antenna Gain is measured in dBi (decibels isotropic). 77. Least volatile to most volatile. 2.5in HDD, mSATA, USB, CPU Cache, RAM - ANSWER 1.) mSATA (least) 2.) 2.5in HDD 3.) USB 4.) RAM 5.) CPU Cache 78. M.2 SSD usually interfaces with the what? - ANSWER PCI Express bus 79. A printer technician troubleshoots a laser printer and determines that the exposing stage of the print job is the issue with print jobs printing incorrectly. What does the technician suspect is happening? - ANSWER The imaging drum is not being conditioned by the primary charge roller. 80. A wireless NIC card uses which PCIe size? - ANSWER PCIe x1 (v1.x) 81. Which type of virtualization refers to any solution designed to run on ordinary desktops or workstations? - ANSWER Client-side virtualization 82. What deployment model does the firm utilize when a multi-tiered subscription option is available to the general consumers? - ANSWER Public (or multitenant) model is a service offered over the internet by cloud service providers (CSPs) to cloud consumers, often referred to as tenants. 83. What service provides on-demand resources like server instances, file storage, databases, or applications over a network? - ANSWER Cloud computing 84. What memory module types are commonly used for ultraportable laptops? - ANSWER Mini-DIMM and Micro-DIMM 85. managed switches - ANSWER ethernet switch that is configurable via a command-line interface or SDN controller.