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• The Cisco IT Essentials course provides knowledge in computer hardware, software, networking, and cybersecurity.
• The course covers hands-on skills for assembling, configuring, and troubleshooting devices.
• This course prepares students for CompTIA A+ certification.

Cleaning Computer Components

• Blow compressed air on cooling fans to remove dust, allowing them to spin freely.
• Do not hold cans of compressed air upright while spraying.
• Do not use window cleaner on LCD screens.
• Do not remove the CPU before cleaning.

Conditions Affecting Laptops

• Wood dust is the condition most likely to adversely affect a laptop due to process monitoring in a furniture plant.
• The production floor environment has laptops for process monitoring and reporting with around 80 degrees Fahrenheit (27 degrees Celsius).
• The humidity level is fairly high, around 70 percent.
• Fans are mounted in the ceiling for air circulation.

PC Power Supply

• A PC with a power supply not automatically adjusting for input voltage and set to 230 volts won't turn on when attached to a U.S. outlet.
• The standard voltage in the United States is generally 120 volts.

Troubleshooting Hardware Failure

• One way a hardware failure detected by the BIOS is indicated is through the computer emitting a pattern of beeps.

Information Gathering for Technicians

• A level one technician should gather contact information.
• A level one technician should gather a description of the problem.
• A level one technician should gather details of any recent changes to the computer.

Asymmetric Encryption

• Asymmetric encryption is an encryption process that uses a public and private key pair to encrypt/decrypt data.

Resolving Computer Problems

• If system files have been renamed implement antivirus software to remove a virus.
• If system files have been renamed restore the computer from a backup.

Extending Primary Partition

• After extending a primary partition formatted with the NTFS file system with the unallocated space on the hard disk, convert the disk type to dynamic to make it usable.

Networking Trends

• Implementing virtualization refers to when data centers update a physical server to host multiple operating systems on a single CPU and provide each customer with a separate web server without allocating a discrete server for each customer.

Running Mobile Apps in a Sandbox

• The purpose of running mobile device apps in a sandbox is to prevent malicious programs from infecting the device

Laser Printer Safety

• High voltage is a safety hazard when dealing with laser printers.
• Hot components are a safety hazard when dealing with laser printers.

SATA Cables

• The optical drive connects to the motherboard with a SATA cable.

Safety Data Sheets

• The purpose of a Safety Data Sheet (SDS) is to specify procedures for dealing with potentially hazardous materials.

eSATA Support

• To ensure eSATA support on a PC, the chipset should be checked.

IPv4 Properties

• For a computer to have basic network connectivity, the values to add to the IPv4 properties of a NIC are the subnet mask, the default gateway, and the IP address.

Call Center Support Levels

• The Service Level Agreement (SLA) for the customer determines the level of support that a call center technician will provide to a customer.

Collate Option

• When collating two copies of a three-page document, the order the pages are printed in is 1, 2, 3, 1, 2, 3.

Motherboard Components

• The BIOS chip controls system boot operations.
• The UEFI chip controls system boot operations.

RAID Adapters

• The purpose of RAID adapters is to connect multiple storage devices for redundancy or speed.

Support Desk Actions

• Let clients finish talking prior to asking additional questions.
• If putting a customer hold, ask customer for permission.

GPS on Mobile Device

• GPS on mobile devices offers tracking, navigation, and remote wipe features.

Windows BitLocker

• Two-factor authentication requires that at least two volumes and either TPM (Trusted Platform Module) support.

Multi-Factor Authentication

• Passwords can be used to implement multi-factor authentication.
• Fingerprints can be used to implement multi-factor authentication.

Internal HDD Installation

• When installing an internal HDD, will connect the data cable to the SATA motherboard connector.

UDP vs TCP

• A faster delivery mechanism is needed when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated.

Configuring Mobile Devices

• Configuring Wi-Fi calling on a corporate mobile device is most useful in an area with poor cellular coverage.

Replaceable Laptop Components

• Customers consider batteries to be replaceable laptop components.
• Customers consider RAM to be replaceable laptop components.

Windows 10 Deployment

• The SID of the original PC is not cleared when creating the image with DISM when network connectivity issues on completion.

Deploying Windows 10

• PXE not enabled with the NIC cards are in new PCs with remote installation.

User File Issues

• Setup a Sync partnership between the network server, Microsoft OneDrive, and the user to address concerns.

Installing Hard Drives

• The new internal hard drive need to initialize the new hard drive, for PC to use Windows 10.

RemovingMalware

• To remove stubborn malware the PC connected to wire network allows anti-malware programs to be installed.

Printer Networks

• PRINT$ provides shared access to a network.

Password Types

• If a computer asks for a password when it powers on but before OS, BIOS type is available.

Linux Permissions

• Linux permission, you have Root,Owners and Group.

BOOT Failure

• Check of windows install drivers.

Company Policies

• Check company customer service agreements.
• Make sure customer wants all info before you start

Security RDP

• Security in code is at port 3389.
• Encryption during sessions

Power Supply

• Always follow directions during disposal/ recycling of computer.

ACP Power State

• The CPU and RAM still receiving power but devices Powered down are at S1 levels

ESD Concerns

• When a mechanical hard drive is replaced with and M.2SSD

Client Packet Destination Port 53

• Accessing DNS access the client 53 port

RAID

• If you use mirroring and striping RAID configuration.
• Your RAID level should be set as 10

Supervisor Request

• If you use an ASA stateful firewall security is enabled.

USB Flashdrive

• exFAT allows more then 4GB in storage.

Network Performance

• There’s a Rainbow table because everyone complains but DNS

Overlapping statement SDRAM

• You can overlapping instructions parallel

Server

• Needs updating .

Feature Included with MCOS

• Screen sharing locally

Wired Printer Access.

• You have a bad DNS or cable .

Technician Laptop

• Turn off Airplane mode.

Command

• Ends processes based on process ID

File Restoration

• Only restored user is available.

File Protocol sharing

• SMTP

CMOS Bios Boot steps.

• Valid boot will occur.

Tablet Step

• NTOSKRNL.EXE

Home Edition is Family safety

• Pro small business

VBScript, JavaScript and Pythons are script languages

• Java, C#, C++ completed languages.

Graphic cross platforms.

• Open graphic library (OpenGl)

Problem steps

• Identify:
• Test theory
• Solve
• Fix
• Document
• Functionality test.