220-1101 Exam Dumps - CompTIA A+ Certification Exam: Core 1

An IP address beginning with 169.254 indicates that the device has not received a valid IP from the DHCP server. Rebooting the router can resolve minor configuration or network glitches, allowing DHCP to function correctly. The other options, such as adjusting lease time or static IP addresses, do not address the core problem. CompTIA A+ Core 1 objectives emphasize DHCP troubleshooting in SOHO networks.

A Hardware Security Module (HSM) securely manages cryptographic keys, including those used to protect credit card chips.

Why Not A (TLS): TLS secures data in transit, not encryption key storage.

Why Not B (AMD): AMD refers to processors, not security modules.

Why Not D (ARM): ARM is a processor architecture, not a cryptographic security solution.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.5, cryptographic hardware​.

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The correct answer is C. OLED.

OLED stands for Organic Light-Emitting Diode, and it is a type of display technology that uses organic compounds to create light and color. Unlike LCD (Liquid Crystal Display) or Plasma displays, OLED does not require a backlight or a filter to produce images. This means that OLED can offer higher contrast, wider color gamut, and better viewing angles than other display types.

LCD displays use liquid crystals that are sandwiched between two polarizing filters and illuminated by a backlight. The liquid crystals can change their orientation and block or allow light to pass through the filters. LCD displays can have different panel types, such as IPS (In-Plane Switching), VA (Vertical Alignment), or TN (Twisted Nematic), which affect the color accuracy, response time, and viewing angles of the display.

Plasma displays use gas-filled cells that are electrically charged to create plasma, which emits ultraviolet light. The ultraviolet light then excites phosphors that emit visible light and color. Plasma displays can produce deep blacks and high contrast, but they are also prone to image retention, screen burn-in, and high power consumption.

VGA stands for Video Graphics Array, and it is not a display type but a video interface standard that was introduced in 1987. VGA can transmit analog signals from a computer to a monitor, but it has low resolution and limited color depth compared to modern digital standards such as HDMI or DisplayPort.

Therefore, OLED is the best display type for graphic designers who want the most accurate color spectrum and the widest viewing angles. OLED displays can also be thinner and lighter than LCD or Plasma displays, which makes them ideal for laptops. However, OLED displays are also more expensive and less durable than other display types, and they may suffer from image retention or burn-in over time.

The technician should check the wattage and the form factor of the power supply to ensure it will support the upgraded workstation. These are the two most important criteria for choosing a compatible and adequate power supply.

Wattage: The wattage of a power supply is the maximum amount of power it can deliver to the components of the workstation. The wattage of the power supply should match or exceed the total power consumption of the components, especially the new graphics card, which is usually the most power-hungry part. If the power supply does not have enough wattage, it may cause instability, crashes, or damage to the workstation. To estimate the power consumption of the components, the technician can use a power supply calculator tool, such as the ones found in the web search results123. The technician should also add some headroom to the wattage, such as 20% to 50%, to account for peak power consumption, future upgrades, or power supply degradation.

Form factor: The form factor of a power supply is the physical size and shape of the unit. The form factor of the power supply should fit in the case of the workstation and match the mounting holes and screws. The most common form factor for desktop power supplies is ATX, which measures 150 x 86 x 140 mm. However, some older or smaller workstations may use different form factors, such as SFX, TFX, or FlexATX. The technician should check the specifications of the workstation case and the power supply to ensure they have the same form factor.

Other criteria, such as efficiency rating, heat dissipation, fan type, and modular cabling, are not essential for supporting the upgraded workstation, but they may affect the performance, noise, or aesthetics of the power supply. The efficiency rating is the percentage of input power that is converted to output power, and it indicates how much power is wasted as heat. The heat dissipation is the ability of the power supply to cool itself and prevent overheating. The fan type is the design and size of the fan that cools the power supply, and it affects the noise level and airflow of the unit. The modular cabling is the feature that allows the user to detach unused cables from the power supply, and it helps to reduce clutter and improve airflow inside the case.

DisplayPort is a type of external monitor connection that provides the highest possible resolution for a PC. DisplayPort supports up to 8K resolution at 60 Hz, or 4K resolution at 120 Hz, with a maximum bandwidth of 32.4 Gbps. DisplayPort also supports audio, multiple monitors, and adaptive sync. DisplayPort is compatible with other types of connections, such as HDMI and DVI, with adapters.

The fuser is the part of a laser printer that uses heat and pressure to fuse the toner to the paper. If the fuser is defective or not hot enough, the toner may not adhere properly and smear when touched. The duplexing assembly, toner, and transfer belt are not related to this issue.

The CMOS battery powers the real-time clock (RTC) on the motherboard, which maintains the date and time when the computer is turned off. If the battery fails, the system will lose date and time settings, reverting to defaults on restart.

Why Not A (OS updates): While OS updates can sometimes cause time issues, they don’t typically affect changes persisting after shutdown.

Why Not C (NTP server): An incorrect NTP server setting would cause the system to synchronize incorrectly, but this issue relates to time resetting during power-off.

Why Not D (RAM): RAM is volatile memory and unrelated to storing persistent time settings.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.4, motherboard troubleshooting​.

After resolving the immediate issue (reactivating server credentials), verifying system functionality ensures the solution works as intended and the user can now access the shared drive. This step is a part of the CompTIA troubleshooting methodology:

Identify the problem.

Establish a theory of probable cause.

Test the theory to determine the cause.

Establish a plan of action.

Implement the solution.

Verify full system functionality.

Document findings, actions, and outcomes.

Why Not B (Document the findings): Documentation comes after verifying the system works.

Why Not A (Escalate the issue): Escalation is unnecessary since the problem was resolved.

Why Not C (Perform backups): Performing backups is unrelated to verifying credential functionality.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 3.1, troubleshooting methodology​​.