CompTIA A+ Core 1 Exam Prep

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Questions and Answers

What is the main purpose of clock speed in a CPU?

It indicates how fast a CPU can process data. (correct)

It measures the total storage capacity of a CPU.

It determines the number of cores in a CPU.

It defines the thermal output of the CPU.

What does a 64-bit CPU allow in terms of memory compared to a 32-bit CPU?

It offers faster processing for 32-bit software.

It can address up to 16 Terabytes of RAM. (correct)

It can address up to 4 Gigabytes of RAM.

It is limited to using 32-bit operating systems.

Which statement best describes BGA sockets used in laptops?

They are exclusively used for desktop CPUs from Intel and AMD.

They support easy upgrades for additional RAM.

They utilize solder balls to permanently attach the CPU to the board. (correct)

They have removable connectors for easy CPU replacement.

What is Hyper-Threading in relation to CPU technology?

An Intel technology that enables a core to process multiple instructions simultaneously. Signup and view all the answers

What purpose do the USB pin headers serve on a motherboard?

To provide a connection to external USB ports Signup and view all the answers

Which of the following operating systems can be run on both 32-bit and 64-bit architectures?

Linux Signup and view all the answers

Which component is responsible for initiating the boot process in a computer system?

BIOS/UEFI Signup and view all the answers

What functionality does Secure Boot provide in UEFI?

Blocks untrusted code from running at boot Signup and view all the answers

What type of memory is used to store the BIOS/UEFI configuration?

EEPROM Signup and view all the answers

Which power connector is typically used for CPU power in modern motherboards?

ATX12v Power Connector Signup and view all the answers

What is the primary function of chassis fans in a computer case?

To pull in cool air and expel hot air Signup and view all the answers

What type of connector is commonly used for CPU fans?

3-pin or 4-pin connector Signup and view all the answers

What is the role of the CMOS in relation to the BIOS/UEFI?

Stores configuration changes to BIOS/UEFI Signup and view all the answers

What is the primary function of a Site-to-Site VPN?

Connect an entire network to another network over the internet Signup and view all the answers

Which layer of Software-Defined Networking (SDN) is responsible for communicating instructions to network devices?

Control Layer Signup and view all the answers

What does the exclusion range in DHCP indicate?

A range of addresses the server cannot assign Signup and view all the answers

What is a benefit of using IP reservations in DHCP?

Ensure a device always receives the same IP address Signup and view all the answers

In the 4-step DHCP process, what message is sent from the client to the server during the Request phase?

Request Signup and view all the answers

Which interface in SDN is used for communication between the controller and network devices?

Southbound Interface Signup and view all the answers

What is an example of an application that can operate within the Application Layer of SDN?

Proxy servers Signup and view all the answers

What defines the duration for which an IP address is assigned to a host in DHCP?

Lease time Signup and view all the answers

What is the primary purpose of RAM in a computer?

To provide temporary data access Signup and view all the answers

What type of memory retains data even when the power is off?

SSD Signup and view all the answers

What function does the motherboard serve in a computer system?

Connects all hardware components and provides power Signup and view all the answers

Which cooling method is most commonly used in computers?

Air cooling using fans Signup and view all the answers

What is the primary role of a computer's PSU?

To convert and supply power at different voltages Signup and view all the answers

How does the chipset of a motherboard impact system capabilities?

Defines supported hardware features and connections Signup and view all the answers

Which of the following is NOT considered an input device?

Monitor Signup and view all the answers

What percentage of the Core 1 exam focuses on Mobile Devices?

15% Signup and view all the answers

What is the passing score required for the Core 2 exam?

700 Signup and view all the answers

Which computer type is designed for portability and convenience?

Laptop Signup and view all the answers

What is the function of thermal compounds in passive cooling?

To fill microscopic imperfections and conduct heat away from the CPU Signup and view all the answers

Which cooling technique utilizes moving parts?

Active cooling Signup and view all the answers

What is a key consideration when using an all-in-one liquid cooler?

They are recommended mainly for gaming or overclocking Signup and view all the answers

What should be done before installing a heat sink?

Always apply thermal compound on the CPU Signup and view all the answers

How do case fans contribute to system cooling?

Intake fans pull in cool air and exhaust fans push out hot air Signup and view all the answers

What is true about thermal pads compared to thermal compounds?

Thermal pads do not need to be replaced frequently Signup and view all the answers

What is a potential risk of liquid cooling systems?

They may leak and cause damage Signup and view all the answers

Which calculation accurately represents CPU frequency?

CPU base clock x clock multiplier Signup and view all the answers

Study Notes

CompTIA A+ Exam Overview

Core 1 Exam (220-1101): Focus on hardware, passing score = 675 (75%), cost = $253 in the USA.
Core 2 Exam (220-1102): Focus on software, passing score = 700 (78%), cost = $253 in the USA.
Each exam has a 90-minute time limit and up to 90 questions in formats including multiple choice, drag & drop, and performance-based.

Core Domains

Core 1 Domains:
- Mobile Devices: 15%
- Networking: 20%
- Hardware: 25%
- Virtualization & Cloud Computing: 11%
- Hardware and Network Troubleshooting: 29%
Core 2 Domains:
- Operating Systems: 31%
- Security: 25%
- Software Troubleshooting: 22%
- Operational Procedures: 22%

Computer Types

Desktop: Tower, Mini PC, All-in-One
Mobile: Laptop, Desktop Replacement, Ultra Portable, Tablet, Smart Phone, Thin Client, Netbook, IoT Device

Memory & Storage

RAM (Random Access Memory):
- Fast access, volatile memory, data lost when power off.
Storage Options:
- HDD (Hard Disk Drive): Traditional, slower.
- SSD (Solid State Drive): Newer, faster, non-volatile.

Power Supply & Cooling

Power Supply:
- Internal for desktops, external for laptops, converts AC to DC.
Cooling Methods:
- Air Cooling: Most common, uses fans.
- Liquid Cooling: For specialized applications, effective but more complex.

CPU and Motherboard

CPU (Central Processing Unit):
- "Brains" of the computer, mounted on the motherboard, requires a heat sink and fan for cooling.
Motherboard:
- Connects all components, provides power to CPU and RAM, facilitates data communication.

Ports and Expansion

Ports integrated on the motherboard for audio, video, network connections, and USB.
Expansion Cards:
- Provide additional ports and capabilities beyond what the motherboard offers.

Input and Output Devices

Input Devices: Keyboard, mouse, trackball, touchpad, touchscreen.
Output Devices: Monitor, speakers, printers, network connections.

Motherboard Components

Chipset: Defines CPU compatibility, RAM specifications, port types, and storage capabilities.
Form Factor: Determines size but not performance.
Connectors and Pin Headers: Include USB, power, and fan connectors.

BIOS/UEFI

BIOS/UEFI initializes boot process and manages hardware features.
ROM and EEPROM store BIOS/UEFI, allowing for updates to improve compatibility and security.
UEFI features include Secure Boot and improved startup times.

CPU Technology

Clock Speed: Measure of performance, faster processors are rated in GHz.
32-bit vs 64-bit:
- 64-bit systems can utilize more RAM (16 TB vs 4 GB).
Multithreading: Enhanced processing capabilities, Hyper-Threading for Intel CPUs.

Cooling Methods

Passive Cooling: Uses no moving parts (e.g., heat sinks).
Active Cooling: Uses fans, both CPU and case fans for managing airflow.
Liquid Cooling: Uses liquids for heat transfer, requires careful installation and maintenance.

Network Services: DHCP

DHCP assigns IP configurations, defines scopes and leases.
Key DHCP Process Steps:
- Discover Broadcast
- Offer Unicast
- Request Broadcast
- Acknowledge UniCast

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Description

Prepare for the CompTIA A+ Core 1 Exam (220-1101) with this comprehensive quiz. Featuring multiple-choice, drag & drop, and performance-based questions, it tests your knowledge across various domains. Aim for a passing score of 675 or higher to succeed.