WGU D316 IT Foundations Exam 100
Questions with Verified Answers & Detailed
Rationales
SECTION 1: HARDWARE FUNDAMENTALS
Question 1
What is the standard form factor for most desktop PC motherboards and
cases, typically measuring 12 inches wide by 9.6 inches deep and
containing up to seven expansion slots?
A. Micro-ATX
B. Mini-ITX
C. Advanced Technology Extended (ATX)
D. Extended ATX (E-ATX)
Correct Answer: C
Rationale: ATX is the standard form factor for most desktop PCs, defined
by its physical dimensions (12 x 9.6 inches) and number of expansion
slots. Micro-ATX and Mini-ITX are smaller form factors, while E-ATX is
larger than ATX.
Question 2
A technician needs to upgrade a legacy computer with a new graphics card.
The motherboard has a long, white slot that is about 2-3 inches in length.
Which expansion slot type is this?
,A. PCI Express (PCIe)
B. PCI-X
C. AGP
D. Peripheral Component Interconnect (PCI)
Correct Answer: D
Rationale: The description fits the older Peripheral Component Interconnect
(PCI) slot, which is usually white and has been superseded by PCI Express.
PCI Express (PCIe) slots come in various sizes (x1, x4, x8, x16) and are not
typically long, white slots.
Question 3
How many binary digits (bits) are found within a Media Access Control
(MAC) address?
A. 32
B. 12
C. 48
D. 64
Correct Answer: C
Rationale: A MAC address is a 48-bit address, typically represented as 12
hexadecimal digits (e.g., 00:1A:2B:3C:4D:5E). Each hexadecimal digit
represents 4 bits, so 12 digits × 4 bits = 48 bits.
Question 4
A technician is tasked with connecting a new desktop to an older network.
The computer has a standard RJ45 Ethernet port, but the wall jack is a
legacy coaxial connector. Which device is needed to complete the
connection?
,A. Switch
B. Router
C. Media converter
D. Patch panel
Correct Answer: C
Rationale: A media converter is used to convert one media type to another,
such as from twisted-pair copper (RJ45) to coaxial cable. A switch
connects devices on the same network, a router connects different
networks, and a patch panel organizes cable runs but does not convert
media types.
Question 5
A user wants to upgrade their desktop's storage for the BEST possible
read/write performance. Which replacement provides the GREATEST
performance improvement over a 1 TB 5400 RPM HDD?
A. 2 TB 7200 RPM HDD
B. 500 GB SATA SSD
C. 1 TB external USB 3.0 HDD
D. 256 GB NVMe M.2 SSD
Correct Answer: D
Rationale: NVMe M.2 SSDs offer the fastest read/write speeds due to their
direct connection to the PCIe bus, significantly outperforming both SATA
SSDs and all HDDs.
Question 6
A technician is troubleshooting a computer that emits a series of short
beeps during POST (Power-On Self-Test) and displays no video. What is the
MOST likely cause?
, A. Overheating CPU
B. Faulty or incorrectly seated RAM
C. Disconnected hard drive
D. Loose power supply cables
Correct Answer: B
Rationale: A series of short beeps is a common BIOS beep code indicating
a memory (RAM) error. Without functional RAM, the computer cannot
complete POST. Overheating usually causes shutdowns, and a
disconnected hard drive would not prevent POST from completing.
Question 7
A department within an organization needs to share a specific set of files
with external users from a Windows 10 system. Which solution should the
systems administrator configure to securely share the files without needing
to directly manage complex Windows permissions for external users?
A. SMB (Server Message Block)
B. NETBIOS
C. FTPS (File Transfer Protocol Secure)
D. HTTP (HyperText Transfer Protocol)
Correct Answer: C
Rationale: FTPS is an extension of FTP that uses TLS to encrypt file
transfers, ensuring data integrity and confidentiality. It is well-suited for
sharing files with external users and does not rely on the complex
permission structures of Windows file-sharing protocols like SMB.
Question 8
A graphic designer needs a monitor that accurately reproduces colors for
Questions with Verified Answers & Detailed
Rationales
SECTION 1: HARDWARE FUNDAMENTALS
Question 1
What is the standard form factor for most desktop PC motherboards and
cases, typically measuring 12 inches wide by 9.6 inches deep and
containing up to seven expansion slots?
A. Micro-ATX
B. Mini-ITX
C. Advanced Technology Extended (ATX)
D. Extended ATX (E-ATX)
Correct Answer: C
Rationale: ATX is the standard form factor for most desktop PCs, defined
by its physical dimensions (12 x 9.6 inches) and number of expansion
slots. Micro-ATX and Mini-ITX are smaller form factors, while E-ATX is
larger than ATX.
Question 2
A technician needs to upgrade a legacy computer with a new graphics card.
The motherboard has a long, white slot that is about 2-3 inches in length.
Which expansion slot type is this?
,A. PCI Express (PCIe)
B. PCI-X
C. AGP
D. Peripheral Component Interconnect (PCI)
Correct Answer: D
Rationale: The description fits the older Peripheral Component Interconnect
(PCI) slot, which is usually white and has been superseded by PCI Express.
PCI Express (PCIe) slots come in various sizes (x1, x4, x8, x16) and are not
typically long, white slots.
Question 3
How many binary digits (bits) are found within a Media Access Control
(MAC) address?
A. 32
B. 12
C. 48
D. 64
Correct Answer: C
Rationale: A MAC address is a 48-bit address, typically represented as 12
hexadecimal digits (e.g., 00:1A:2B:3C:4D:5E). Each hexadecimal digit
represents 4 bits, so 12 digits × 4 bits = 48 bits.
Question 4
A technician is tasked with connecting a new desktop to an older network.
The computer has a standard RJ45 Ethernet port, but the wall jack is a
legacy coaxial connector. Which device is needed to complete the
connection?
,A. Switch
B. Router
C. Media converter
D. Patch panel
Correct Answer: C
Rationale: A media converter is used to convert one media type to another,
such as from twisted-pair copper (RJ45) to coaxial cable. A switch
connects devices on the same network, a router connects different
networks, and a patch panel organizes cable runs but does not convert
media types.
Question 5
A user wants to upgrade their desktop's storage for the BEST possible
read/write performance. Which replacement provides the GREATEST
performance improvement over a 1 TB 5400 RPM HDD?
A. 2 TB 7200 RPM HDD
B. 500 GB SATA SSD
C. 1 TB external USB 3.0 HDD
D. 256 GB NVMe M.2 SSD
Correct Answer: D
Rationale: NVMe M.2 SSDs offer the fastest read/write speeds due to their
direct connection to the PCIe bus, significantly outperforming both SATA
SSDs and all HDDs.
Question 6
A technician is troubleshooting a computer that emits a series of short
beeps during POST (Power-On Self-Test) and displays no video. What is the
MOST likely cause?
, A. Overheating CPU
B. Faulty or incorrectly seated RAM
C. Disconnected hard drive
D. Loose power supply cables
Correct Answer: B
Rationale: A series of short beeps is a common BIOS beep code indicating
a memory (RAM) error. Without functional RAM, the computer cannot
complete POST. Overheating usually causes shutdowns, and a
disconnected hard drive would not prevent POST from completing.
Question 7
A department within an organization needs to share a specific set of files
with external users from a Windows 10 system. Which solution should the
systems administrator configure to securely share the files without needing
to directly manage complex Windows permissions for external users?
A. SMB (Server Message Block)
B. NETBIOS
C. FTPS (File Transfer Protocol Secure)
D. HTTP (HyperText Transfer Protocol)
Correct Answer: C
Rationale: FTPS is an extension of FTP that uses TLS to encrypt file
transfers, ensuring data integrity and confidentiality. It is well-suited for
sharing files with external users and does not rely on the complex
permission structures of Windows file-sharing protocols like SMB.
Question 8
A graphic designer needs a monitor that accurately reproduces colors for
