CompTIA 220-1201 - Questions & Answers

A sandbox is an isolated virtual environment used to test or run applications securely without risk to the host or network. It prevents the VM from communicating with external systems, making it ideal for testing malware or suspicious software.

Option A (VDI):Virtual Desktop Infrastructure allows network communication; it does not restrict it. Option B (Private cloud):Refers to a cloud deployment model, not a communication barrier. Option D (Type 1 hypervisor):Runs VMs directly on hardware and doesnotinherently block communication.

References:
Objective 4.1: Compare and contrast cloud computing concepts.

LC (Lucent Connector) is a type of fiber optic connector commonly used in optical networking cables. It is small, compact, and widely used for high-speed data transfer over fiber optic networks. LC connectors are specifically designed for fiber optic cables, making them the correct answer.

Incorrect Options:

Option A: RJ45 connectors are used for Ethernet cables (twisted-pair copper cabling) and are not compatible with optical networking cables.
Option C: USB-C is a connector type used for general-purpose data transfer, charging, and video output, not for optical networking.

Option D: Lightning connectors are proprietary to Apple devices and are not used in optical networking.

Key Takeaway:
The LC connector is specifically designed for fiber optic cables, making it the correct answer for optical networking.

References:
CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 3.1 - Cable and connector types, including fiber optic cables.

Ultra HD (UHD), also referred to as 4K UHD, has a resolution of 3840x2160. It's four times the resolution of standard 1080p (Full HD), offering more screen real estate and sharper images.

Option A (1920x1080):Full HD (FHD), not UHD.

Option B (2048x1080):DCI 2K -- used in cinema, not common for Ultra HD.

Option D (7680x4320):Known as 8K UHD, not standard Ultra HD.

References:
Objective 1.7: Compare and contrast display technologies and their features.

Identifying changes made to the system is the next step to troubleshoot why an application no longer launches, as recent changes often cause such issues.
Why Not A (Research the symptoms): Research is broader and should come after identifying changes.

Why Not C (Determine which steps need to be performed): This comes after identifying the issue.

Why Not D (Check the vendor's website): This is a later step if further guidance is needed.

References:
Core 2 (220-1102), Section 3.1, troubleshooting methodology.

During the Power-On Self-Test (POST), the BIOS performs checks on system hardware, including RAM. If the RAM is faulty, POST may produce a series of beep codes indicating memory issues.

These beep codes are often the first sign of RAM-related problems, especially if the BSOD occurs randomly.
Incorrect Options:

Option A: Wrong BIOS configurations: Incorrect BIOS settings may cause boot errors, but they are less likely to cause random BSODs.

Option B: Continuous reboots: Continuous reboots could result from multiple hardware or software issues but do not specifically point to RAM.

Option C: Distended capacitors: Faulty capacitors typically affect the motherboard, not the RAM.

Key Takeaway: POST beep codes are a common diagnostic tool for identifying RAM-related issues.

References:
CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 5.2 - Troubleshooting RAM and motherboard issues.

A PoE (Power over Ethernet) switch transmits both data and electrical power over Ethernet cables to devices like wireless access points or VoIP phones. This is especially useful in areas where separate power sources are not available.

References:
"CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 5, pages 319-321.

If the system reports"Bootable device not found", and the BIOS is configured correctly, the next step is to run diagnostics on the hard drive to check for physical or logical failure. It could be a sign of afailing drive or corrupt boot sector.

Option A:Reformatting the drive would erase data -- not a diagnostic step.

Option C:RAM does not affect whether a drive is bootable.

Option D:Replacing the drive should only be done after diagnostics confirm failure.

References:
Objective 3.5: Given a scenario, troubleshoot problems related to storage devices.

If performance is not a primary concern and the user requires large, cost-effective storage, a 2TB 5400rpm SATA HDD is ideal. It offers high capacity at a lower price point than SSDs and faster HDDs.

Option A:NVMe drives offer exceptional speed but are significantly more expensive per GB and not necessary when read/write speed is not a concern.

Option B:RAID 1 improves redundancy but cuts usable capacity in half and uses expensive SSDs. Option
D:SAS drives are fast and reliable but are enterprise-grade and expensive -- overkill for desktop use.

References:
Objective 1.3: Given a scenario, install and configure storage devices.

A degraded RAID 1array usually means one of the drives has failed or is failing. The correct next step is to run diagnostics on each drive to identify the faulty one. RAID 1 uses mirroring, so one good drive should still contain all the data.

Option B:chkdsk checks file system integrity, not hardware drive health.

Option C:Rebuilding should only occur after identifying and replacing a faulty drive.

Option D:RAID 0 offers no redundancy and would destroy data in this context.

References:
Objective 3.5: Given a scenario, troubleshoot problems related to storage devices.