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Question 361

Which component allows a desktop computer to communicate with other devices over a wired Ethernet network?

1. Sound card
2. Network interface card
3. Capture card
4. RAID controller

Correct Answer: 2

Explanation

A network interface card, or NIC, provides the hardware interface required for network communication. A wired NIC typically includes an Ethernet port and communicates with a network switch, router, or other compatible networking equipment. Many modern motherboards have integrated Ethernet networking, but a separate NIC can be installed when additional ports or capabilities are needed. A sound card handles audio, a capture card records or receives media signals, and a RAID controller manages storage arrays. Therefore, the NIC provides wired network connectivity.

Question 362

Which connector is commonly found on an Ethernet network cable used with a desktop computer?

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

Correct Answer: 1

Explanation

RJ45-style connectors are commonly used with twisted-pair Ethernet cables. They contain eight contacts and are used with cable categories such as Cat 5e, Cat 6, and Cat 6a. RJ11 connectors are smaller and commonly associated with telephone connections, while SC is a fiber-optic connector and BNC is commonly associated with coaxial connections. Technicians should ensure that the cable category and connector are appropriate for the network equipment being used. Therefore, RJ45 is the expected connector for standard Ethernet cabling.

Question 363

Which component stores the firmware configuration information that can be retained when the computer is powered off?

1. RAM
2. GPU memory
3. CMOS
4. CPU cache

Correct Answer: 3

Explanation

CMOS is traditionally associated with storing certain motherboard firmware configuration settings, such as hardware configuration information and system time settings. A small battery helps maintain this information when the computer is disconnected from external power. Modern systems may use nonvolatile flash memory and UEFI implementations rather than relying entirely on traditional CMOS technology, but the term remains common in PC troubleshooting. RAM, GPU memory, and CPU cache are primarily working-memory technologies. Therefore, CMOS is the best answer for the described firmware configuration storage.

Question 364

Which technology is commonly used to connect a smartphone to a compatible vehicle for hands-free calling and audio streaming?

1. NFC
2. Bluetooth
3. GPS
4. Infrared

Correct Answer: 2

Explanation

Bluetooth provides short-range wireless communication between compatible devices and is widely used for hands-free calling, wireless audio, keyboards, mice, and other peripherals. A smartphone can pair with a vehicle’s infotainment system to exchange audio and control information without requiring a physical cable. NFC is designed for very short-range interactions, GPS provides positioning information, and infrared uses light for compatible communication systems. Therefore, Bluetooth is the appropriate technology for hands-free calling and wireless audio streaming in a vehicle.

Question 365

Which type of port is commonly used to connect a desktop computer to a wired network using twisted-pair Ethernet cable?

1. HDMI
2. USB
3. Ethernet port
4. DisplayPort

Correct Answer: 3

Explanation

An Ethernet port provides a physical connection between a computer and a wired network using compatible twisted-pair Ethernet cabling. The port commonly accepts an RJ45-style connector and is often integrated directly into a motherboard or installed through a network adapter. HDMI and DisplayPort are primarily used for digital display connections, while USB is a general-purpose interface for peripherals and other devices. A wired Ethernet connection can provide reliable and consistent network performance. Therefore, the Ethernet port is the correct interface.

Question 366

Which storage interface is commonly associated with a 2.5-inch solid-state drive installed inside a desktop or laptop computer?

1. SATA
2. PCI
3. AGP
4. IDE

Correct Answer: 1

Explanation

Many 2.5-inch SSDs use the SATA interface for communication with the computer. These drives typically require a SATA data connection and a separate SATA power connection. SATA SSDs are faster and have lower access latency than traditional mechanical hard drives, although NVMe SSDs using PCIe can provide substantially higher performance when supported. PCI and AGP are older expansion interfaces, while IDE is an older storage interface that has largely been replaced by SATA. Therefore, SATA is commonly associated with 2.5-inch internal SSDs.

Question 367

Which Windows utility provides a chronological record of system, application, and security-related events?

1. Resource Monitor
2. Event Viewer
3. Disk Management
4. Task Scheduler

Correct Answer: 2

Explanation

Event Viewer provides access to Windows logs containing records of system, application, security, and other events. Technicians can use these logs to investigate application failures, driver problems, service issues, authentication events, and other system conditions. Resource Monitor provides detailed information about resource usage, Disk Management manages storage volumes, and Task Scheduler controls scheduled tasks. Event Viewer is particularly useful when troubleshooting intermittent problems because the logs can provide timestamps and error information that help correlate events. Therefore, Event Viewer is the appropriate utility.

Question 368

Which network service provides automatic IP addressing to clients on a local network?

1. DNS
2. NTP
3. DHCP
4. SMTP

Correct Answer: 3

Explanation

DHCP, or Dynamic Host Configuration Protocol, automatically provides network clients with configuration information such as IP addresses, subnet masks, default gateways, and DNS server addresses. This reduces administrative work and helps prevent configuration mistakes that can occur when addresses are entered manually. DNS resolves names to network addresses, NTP synchronizes system clocks, and SMTP is used for email transmission. When a computer cannot communicate properly on a network, checking its DHCP-assigned configuration can be an important troubleshooting step. Therefore, DHCP provides automatic IP addressing.

Question 369

Which security practice limits users to only the permissions necessary for their assigned tasks?

1. Least privilege
2. Open authorization
3. Full administrative access
4. Shared credentials

Correct Answer: 1

Explanation

The principle of least privilege requires users, applications, and services to receive only the permissions needed to perform their authorized responsibilities. Limiting unnecessary privileges reduces the potential impact of compromised accounts, malware, accidental changes, and misuse of administrative capabilities. Granting every user full administrative access increases risk, while shared credentials reduce accountability and make access management more difficult. Open authorization does not represent a restrictive security principle. Therefore, least privilege is the appropriate security practice for limiting access according to job requirements.

Question 370

Which device can provide wireless network access to clients while connecting those clients to an existing wired network?

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

Correct Answer: 3

Explanation

A wireless access point provides Wi-Fi connectivity to wireless clients and typically bridges that traffic to a wired Ethernet network. Access points are commonly deployed throughout offices, schools, homes, and other environments where users need wireless access to network resources. A switch primarily connects wired devices, a modem provides a service-provider connection, and a patch panel organizes physical network cabling. Some wireless routers include an access-point function, but the dedicated component responsible for wireless client connectivity is the access point.

Question 371

Which display technology uses individual pixels that emit their own light rather than requiring a separate backlight?

1. LCD
2. OLED
3. VGA
4. Plasma

Correct Answer: 2

Explanation

OLED, or Organic Light-Emitting Diode, displays use self-emitting pixels. Each pixel can produce its own light, allowing the display to turn individual pixels off completely and potentially achieve very deep black levels. LCD displays generally require a separate backlight, while VGA is an analog video interface rather than a display technology. Plasma displays also use self-emitting elements but operate through a different technology. OLED panels are commonly used in smartphones, televisions, and other modern displays. Therefore, OLED is the correct display technology.

Question 372

Which connector is designed to be reversible and is commonly used for modern smartphones, laptops, and peripherals?

1. USB Type-A
2. Micro-USB
3. USB Type-C
4. PS/2

Correct Answer: 3

Explanation

USB Type-C is a reversible connector designed for modern computers, smartphones, tablets, storage devices, and other peripherals. Its symmetrical shape allows the connector to be inserted in either orientation, improving convenience compared with older USB designs. Depending on the device and implementation, USB-C can support high-speed data transfer, power delivery, display output, and other alternate modes. USB Type-A is not reversible, Micro-USB is an older compact connector, and PS/2 is a legacy peripheral interface. Therefore, USB Type-C is the correct choice.

Question 373

Which backup type copies all selected files regardless of whether they were modified since the previous backup?

1. Full
2. Incremental
3. Differential
4. Snapshot

Correct Answer: 1

Explanation

A full backup copies all selected data each time the backup operation is performed, regardless of whether individual files have changed since the previous backup. Full backups generally require more storage space and may take longer to complete than incremental or differential backups. However, restoration is relatively straightforward because the required data can normally be obtained from the full backup itself. Incremental backups contain changes since the previous backup, while differential backups contain changes since the last full backup. Therefore, the described backup type is full.

Question 374

Which command can be used to test whether a remote host responds to network requests?

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

Correct Answer: 3

Explanation

The ping command sends network requests to a destination and reports whether responses are received. It can help technicians determine whether a host is reachable and can provide response-time information. Ping is useful for diagnosing basic connectivity issues, although a failed ping does not always mean that a host is unavailable because firewalls may block ICMP traffic. Nslookup queries DNS information, ipconfig displays local network configuration, and netstat displays connections and listening ports. Therefore, ping is the appropriate command for testing basic network reachability.

Question 375

Which printer type uses liquid ink sprayed through tiny nozzles onto paper?

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

Correct Answer: 2

Explanation

Inkjet printers create images and text by spraying tiny droplets of liquid ink through microscopic nozzles onto paper. They can produce high-quality color output and are commonly used for photographs and general home printing. Laser printers use powdered toner and a fuser, dot matrix printers use an impact print head and ribbon, and thermal printers use heat-sensitive media or thermal transfer mechanisms. Inkjet printers may require periodic maintenance to prevent ink from drying in the print head. Therefore, inkjet is the correct printer technology.

Question 376

Which network protocol is primarily used to send outgoing email from a mail client or server?

1. IMAP
2. POP3
3. SMTP
4. SMB

Correct Answer: 3

Explanation

SMTP, or Simple Mail Transfer Protocol, is primarily used for sending outgoing email. A mail client can use SMTP to submit messages to a mail server, and mail servers use SMTP to transfer messages between systems. IMAP and POP3 are primarily associated with retrieving email, while SMB is used for network file and printer sharing. Modern email systems commonly use encrypted or authenticated SMTP configurations to protect credentials and communications. Therefore, SMTP is the protocol responsible for sending outgoing email.

Question 377

Which email protocol allows users to keep messages synchronized across multiple devices while storing the messages on the mail server?

1. SMTP
2. IMAP
3. FTP
4. TFTP

Correct Answer: 2

Explanation

IMAP, or Internet Message Access Protocol, allows email messages and mailbox folders to remain stored on the mail server while clients synchronize their view of the mailbox. This makes IMAP particularly useful when a user accesses the same account from a smartphone, laptop, tablet, and webmail interface. SMTP is primarily used for sending email, while FTP and TFTP are file-transfer protocols. Because messages remain on the server, actions such as reading or deleting mail can often synchronize across multiple clients. Therefore, IMAP provides the described functionality.

Question 378

Which technology allows a computer to start an operating-system installation or boot environment from a network server?

1. PXE
2. NFC
3. Bluetooth
4. RAID

Correct Answer: 1

Explanation

PXE, or Preboot Execution Environment, allows a compatible computer to boot from a network rather than relying solely on local storage. A system with PXE support can obtain network configuration and boot files from appropriate network services, making PXE useful for operating-system deployment, imaging, and centralized installation environments. NFC and Bluetooth are wireless communication technologies, while RAID provides storage configurations. PXE is particularly valuable in organizations that need to deploy operating systems to many computers without manually preparing each local drive. Therefore, PXE is the correct technology.

Question 379

Which component is primarily responsible for producing audio output from a computer?

1. NIC
2. GPU
3. Sound card
4. PSU

Correct Answer: 3

Explanation

A sound card provides audio-processing and audio-output capabilities for a computer. It can convert digital audio data into signals that speakers, headphones, or other audio equipment can use. Many motherboards include integrated audio hardware, while dedicated sound cards can provide additional features or improved capabilities for specialized applications. A NIC provides network connectivity, a GPU handles graphics processing and may also support digital audio through display connections, and a PSU supplies electrical power. Therefore, the sound card is the component primarily associated with computer audio output.

Question 380

A technician replaces a failed component and confirms that the computer now operates correctly. What should be completed before closing the support ticket?

1. Remove all diagnostic records
2. Document the repair and final test results
3. Disable automatic updates
4. Replace another component as a precaution

Correct Answer: 2

Explanation

Before closing a support ticket, the technician should document the identified problem, corrective action, replaced component, and verification results. Accurate documentation provides a record of what was done and helps future technicians troubleshoot similar problems more efficiently. It can also support asset tracking, warranty information, and organizational service records. Removing diagnostic records would eliminate useful information, disabling updates is unrelated, and replacing additional components without evidence could introduce new problems. Therefore, documenting the repair and final test results is the appropriate final step.