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Question 321

Which component provides a high-speed connection between the processor and installed system memory?

1. DIMM
2. Memory controller
3. SATA controller
4. NIC

Correct Answer: 2

Explanation

The memory controller manages communication between the processor and system memory. In many modern computer architectures, the memory controller is integrated into the CPU rather than being located as a separate motherboard chip. It controls how memory requests are handled and helps determine supported memory technologies, speeds, and configurations. DIMMs are the physical memory modules, while a SATA controller manages compatible storage devices and a NIC provides network connectivity. Therefore, the memory controller is responsible for coordinating communication between the CPU and system RAM.

Question 322

Which storage device is most likely to experience slower access times because it relies on mechanical movement?

1. HDD
2. NVMe SSD
3. SATA SSD
4. USB flash drive

Correct Answer: 1

Explanation

A hard disk drive uses spinning magnetic platters and mechanical read/write heads, so accessing data involves physical movement. This mechanical operation generally results in higher latency than solid-state storage technologies. NVMe SSDs, SATA SSDs, and USB flash drives use flash memory without spinning platters or mechanical heads. HDDs can still provide large capacities at relatively low costs, making them useful for bulk storage and archival purposes. Therefore, the HDD is the storage device most likely to experience slower mechanical access times.

Question 323

Which interface is commonly used to connect an external storage device while also supporting data transfer and, depending on the implementation, power delivery?

1. VGA
2. PS/2
3. USB
4. RJ11

Correct Answer: 3

Explanation

USB is a general-purpose interface widely used to connect external storage devices such as flash drives, portable hard drives, and external SSDs. USB connections can provide data transfer and may also supply electrical power to compatible devices. Different USB generations and connector types provide different speeds and capabilities. VGA is an analog video interface, PS/2 is a legacy keyboard and mouse connection, and RJ11 is commonly associated with telephone wiring. Therefore, USB is the appropriate interface for connecting an external storage device with the described capabilities.

Question 324

Which power connector is commonly used to provide additional power directly to a high-performance CPU on a desktop motherboard?

1. SATA power
2. 4/8-pin EPS12V
3. Molex peripheral power
4. 24-pin ATX

Correct Answer: 2

Explanation

The 4-pin or 8-pin EPS12V connector provides dedicated processor power from the PSU to the motherboard. Modern desktop systems, especially those using higher-performance CPUs, commonly require an 8-pin EPS connector or a compatible configuration. The 24-pin ATX connector supplies the motherboard’s primary power, while SATA power connectors are commonly used for storage devices and Molex connectors are found on some legacy peripherals and accessories. Therefore, the EPS12V connector is designed to provide dedicated CPU power.

Question 325

Which display interface uses a 15-pin connector and transmits analog video signals?

1. HDMI
2. DisplayPort
3. USB-C
4. VGA

Correct Answer: 4

Explanation

VGA is an older analog video interface that commonly uses a 15-pin D-sub connector. It was widely used to connect computers to monitors and projectors before digital interfaces became standard. VGA carries analog video and normally does not transmit digital audio. HDMI and DisplayPort are digital interfaces, while USB-C can carry video through supported alternate modes and compatible hardware. Although VGA is less common on modern systems, technicians may still encounter it when supporting older equipment. Therefore, VGA matches the description.

Question 326

Which technology provides a dedicated, high-speed connection between a computer and a local wireless network?

1. Wi-Fi
2. NFC
3. Bluetooth
4. Infrared

Correct Answer: 1

Explanation

Wi-Fi provides wireless local-area network connectivity, allowing computers and mobile devices to communicate with wireless access points and other network resources. It supports significantly greater range and network throughput than technologies designed primarily for peripheral communication. Bluetooth is commonly used for keyboards, mice, headsets, and other personal-area devices. NFC is intended for very short-range communication, while infrared uses light and generally requires suitable alignment. Therefore, Wi-Fi is the wireless technology used for connecting a computer to a local wireless network.

Question 327

Which connector is commonly associated with fiber-optic networking and uses a push-pull coupling design?

1. SC
2. RJ45
3. BNC
4. RJ11

Correct Answer: 1

Explanation

The SC connector is a fiber-optic connector that commonly uses a push-pull coupling mechanism. It has a larger form factor than the LC connector and has been widely used in telecommunications and networking installations. RJ45 connectors are commonly used with twisted-pair Ethernet, BNC connectors can be used with certain coaxial applications, and RJ11 is associated primarily with telephone connections. Fiber-optic connectors vary by installation and equipment, so technicians should verify the required connector type before making a connection. Therefore, SC is the appropriate choice.

Question 328

Which device converts digital data from a computer into signals suitable for transmission over a compatible service-provider connection?

1. Access point
2. Modem
3. Switch
4. Patch panel

Correct Answer: 2

Explanation

A modem provides the interface between a local network or computer and certain service-provider communication systems. The term modem originates from modulation and demodulation, referring to the conversion of digital information into signals suitable for transmission and the conversion of received signals back into usable data. A switch connects devices on a local network, an access point provides wireless connectivity, and a patch panel organizes physical network cabling. Therefore, a modem performs the service-provider signal conversion function described.

Question 329

Which component is primarily responsible for executing instructions and performing general-purpose calculations in a computer?

1. RAM
2. GPU
3. CPU
4. PSU

Correct Answer: 3

Explanation

The central processing unit, or CPU, executes program instructions and performs general-purpose calculations required by the operating system and applications. It contains processing cores and other internal components designed to perform arithmetic, logical operations, control tasks, and instruction processing. RAM provides temporary working storage, the GPU specializes in graphics and parallel workloads, and the PSU supplies electrical power. Although modern GPUs can perform many computational tasks, the CPU remains the primary general-purpose processor in a conventional computer. Therefore, the CPU performs the described role.

Question 330

Which technology allows multiple physical drives to appear as a coordinated storage array for redundancy or performance purposes?

1. RAID
2. DHCP
3. DNS
4. NFC

Correct Answer: 1

Explanation

RAID, or Redundant Array of Independent Disks, combines multiple physical drives into a logical storage arrangement. Different RAID levels provide different combinations of performance, capacity, and redundancy. For example, RAID 0 stripes data for performance without redundancy, while RAID 1 mirrors data between drives. Other levels can use parity to provide fault tolerance. DHCP manages network addressing, DNS performs name resolution, and NFC provides short-range wireless communication. Therefore, RAID is the technology used to coordinate multiple drives into a storage array.

Question 331

Which connector is commonly used for a traditional analog telephone line?

1. RJ45
2. RJ11
3. HDMI
4. LC

Correct Answer: 2

Explanation

RJ11 is commonly associated with traditional telephone connections and is typically smaller than the RJ45-style connector used for Ethernet networking. Telephone wiring can use RJ11 connectors to connect handsets, DSL equipment, and other compatible devices. RJ45 is commonly used for Ethernet, HDMI is a digital audio/video interface, and LC is a fiber-optic connector. Connector appearances can sometimes be similar, so technicians should identify the port and cable based on the equipment requirements rather than relying only on physical appearance. Therefore, RJ11 is the appropriate choice.

Question 332

Which type of memory is specifically designed to retain firmware or other data when system power is removed?

1. RAM
2. Cache
3. ROM
4. VRAM

Correct Answer: 3

Explanation

ROM, or Read-Only Memory, is a nonvolatile memory technology that retains stored information even when electrical power is removed. It has historically been used for firmware and other information that should remain available during system startup. Modern firmware is often stored in flash-based memory that can be updated, but it remains nonvolatile. RAM and cache are volatile working-memory technologies, while VRAM is primarily used by graphics hardware. Therefore, ROM represents the nonvolatile memory category described in the question.

Question 333

Which protocol is commonly used to provide secure remote command-line access to another computer?

1. FTP
2. Telnet
3. SSH
4. HTTP

Correct Answer: 3

Explanation

SSH, or Secure Shell, provides encrypted remote access to systems and is commonly used for command-line administration. It protects authentication credentials and session data from interception when properly configured. Telnet can provide remote command-line access but transmits information without the same level of encryption and is therefore unsuitable for many secure environments. FTP is primarily used for file transfers, while HTTP is used for web communication. Therefore, SSH is the appropriate protocol for secure remote command-line administration.

Question 334

Which connector is commonly used to connect a modern monitor to a computer and supports digital video and audio?

1. DisplayPort
2. PS/2
3. RJ11
4. SATA

Correct Answer: 1

Explanation

DisplayPort is a digital interface designed primarily for connecting computers to monitors and other display equipment. It can carry both digital video and audio and supports high resolutions and refresh rates depending on the version and connected devices. PS/2 is a legacy peripheral interface, RJ11 is associated with telephone connections, and SATA is a storage interface used internally. DisplayPort is also commonly found on dedicated graphics cards and docking stations. Therefore, DisplayPort is appropriate for the described modern monitor connection.

Question 335

Which component provides nonvolatile storage for the operating system, applications, and user files?

1. RAM
2. CPU cache
3. SSD
4. System registers

Correct Answer: 3

Explanation

An SSD provides nonvolatile storage for operating-system files, applications, documents, photographs, and other persistent data. Unlike RAM and CPU cache, SSD storage retains information after the computer is powered off. SSDs use flash memory and have no spinning platters or mechanical read/write heads, allowing fast access and improved resistance to physical shock compared with HDDs. System registers are tiny, extremely fast storage areas inside the CPU used during instruction processing. Therefore, an SSD provides the persistent storage described.

Question 336

Which wireless technology is designed for very short-range communication and is commonly used for tap-to-pay transactions?

1. Wi-Fi
2. Bluetooth
3. NFC
4. GPS

Correct Answer: 3

Explanation

Near Field Communication, or NFC, is designed for communication over very short distances, generally requiring devices to be brought close together. It is commonly used for contactless payments, access cards, identification applications, and quick device pairing. Wi-Fi is designed for wireless networking over a larger area, Bluetooth commonly connects personal peripherals, and GPS receives satellite signals for positioning. NFC’s short operating range can help make intentional close-proximity interactions convenient. Therefore, NFC is the wireless technology used for the described tap-to-pay functionality.

Question 337

Which Windows command traces the network path taken by packets toward a destination?

1. ping
2. tracert
3. ipconfig
4. nslookup

Correct Answer: 2

Explanation

The tracert command in Windows traces the route packets take toward a destination by identifying intermediate network hops. It can help technicians determine where connectivity problems or unusually high delays may occur along a path. Ping primarily tests reachability and response time, ipconfig displays local network configuration, and nslookup queries DNS information. Tracert does not necessarily identify every problem on a network, but it provides useful information about the route between the local system and a destination. Therefore, tracert is the correct command.

Question 338

Which type of printer uses powdered toner rather than liquid ink?

1. Laser
2. Inkjet
3. Dot matrix
4. Thermal

Correct Answer: 1

Explanation

Laser printers use powdered toner to produce printed documents. During the printing process, an imaging drum is electrically prepared, toner is transferred to the appropriate areas, and the toner is ultimately fused onto the paper using heat and pressure. Inkjet printers use liquid ink, dot matrix printers use an impact mechanism and ribbon, and thermal printers use heat-sensitive media or thermal transfer processes. Laser printers are widely used in office environments because they can produce text documents quickly and efficiently. Therefore, laser is the printer type described.

Question 339

Which component supplies electrical power to the computer’s internal devices and converts AC input into usable DC output?

1. UPS
2. PSU
3. Battery
4. Surge protector

Correct Answer: 2

Explanation

The power supply unit, or PSU, converts incoming AC electrical power into the DC voltages required by the computer’s internal components. It supplies power to the motherboard, processor through dedicated motherboard circuitry, storage devices, fans, graphics cards, and other components through appropriate connectors. A UPS can provide temporary battery backup, a battery stores electrical energy, and a surge protector helps protect equipment from certain voltage spikes. Therefore, the PSU is responsible for converting and distributing usable electrical power inside the computer.

Question 340

A user reports that a computer repeatedly freezes after a new device driver was installed. What should the technician try first after confirming the timing of the problem?

1. Replace the motherboard
2. Delete all personal files
3. Disable the network permanently
4. Roll back or remove the recently installed driver

Correct Answer: 4

Explanation

If system instability begins immediately after installing a new device driver, the driver should be considered a likely cause. After confirming the timing and symptoms, the technician can roll back the driver to a previous known-good version or remove it and allow Windows to use an appropriate driver. This can help determine whether the new driver caused the freezes. Replacing the motherboard or deleting personal data would be excessive and unrelated without further evidence. Therefore, rolling back or removing the recently installed driver is the appropriate first corrective step.