3.3.2 Motherboard Facts
A motherboard (also called system board, logic board, or mainboard) is a circuit board that either
houses or is connected to all of the components operating in the computer. When selecting a
motherboard, consider the following moth
2.1.5 - ESD Facts
Static electricity is the accumulation of an electric charge (produced by friction) on a nongrounded object. The static charge on the surface of a non-grounded object can jump when it
contacts the surface of any grounded object. This ele
3.7.3 RAM Facts
Random Access Memory (RAM) can be classified as one of two types:
SRAM stores data using four transistors for every bit of data. SRAM does not require
constant power to maintain the contents of memory.
SRAM is more comple
1.4.6 - Windows Interface Facts
You should be familiar with the following components of the Windows interface:
The desktop contains icons that access programs, files, applications, and file
systems. The desktop is what
2.1.2 - Safety Measures
Personal safety is your top priority when working with computer components. Keep in mind the
following issues that can be hazardous:
Power hazards can cause electrical shock and burns.
Before handling a system
3.5.6 CPU Installation Facts
Remember the following when installing a CPU:
Preparing for a CPU installation will help to ensure that your new
components are not damaged before installation. Use anti-s
2.5.2 Troubleshooting Process Facts
Good troubleshooting is a process that combines knowledge, experience, and intuition. As you
practice service and support in a work environment, you will add to your experience and
develop intuition that will help you t
3.2.2 Power Supply Facts
Power supplies are responsible for powering every component in a computer system. Power supplies perform
the following functions:
Convert AC power to DC power
AC (alternating current) is the type of current distributed through wa
3.1.2 System Case Facts
Motherboards adhere to design specifications called form factors. The form factor determines the physical
characteristics of a motherboard, including its dimensions, number of expansion slots, and mounting hole
locations, as well a
2.4.5 - Power Protection Facts
The following table lists power conditions you should be familiar with:
Overvoltage that lasts seconds
Overvoltage that lasts milliseconds
Undervoltage that lasts milliseconds
2.1.7 Environmental Facts
It is important to ensure that equipment and hazardous chemicals are disposed of properly.
Consult the manufacturer's documentation for recommended solutions for equipment disposal.
Consult an MSDS for information on physical d
Computers are made up of several constituent components. These components can be divided into two main
The physical components that compose a computer system or network. Common hardware
components include t
1.6.4 - Mac OS Facts
Apple devices have several features that are unique to the Mac OS. Some are:
Gestures are specific finger motions that are used to perform a specific function
on a Mac OS system. They are used by Apple systems that
3.5.4 CPU Socket Facts
When choosing a motherboard, you need to ensure that the board is compatible with the system CPU that you
intend to use.
Your motherboard has a socket that accepts the processor. The processor socket on the motherboard must
1.3.5 Adapter and Convertor Facts
Connector adapters and converters are used to convert a particular connector type into one
that can be used by a computer or component. Adapters are typically used with displays to
convert a display connector (e.g., DVI)
3.8.2 Memory Facts
The best way to ensure that you get the correct RAM for your system is to consult the motherboard
documentation. In addition, there are several websites on the Internet where you can look up your system or
scan your system to find the c
1.3.4 - Ports and Connectors
You should be familiar with the following types of ports and connectors, where they are located, and which
devices they support:
The Video Graphics Array (VGA) port is used to connect external display
2.4.2 - PC Maintenance Facts
One of the most important things you can do to keep computer systems running is to create
the proper environment.
For computer components, design HVAC systems with the
following in mind:
3.6.2 Processor Troubleshooting Facts
Symptoms of a failed or failing CPU include:
System will not boot.
System boots, but the operating system fails to load.
System has POST parity problems with a number of devices.
System locks up shortly after star
3.7.5 Memory Speed Facts
Memory is rated based on its guaranteed stable operating frequency and bandwidth (the rate at which data can
be read or written). Memory ratings help you to differentiate between slower and faster RAM. The following
3.4.2 Motherboard Troubleshooting Facts
Common motherboard issues include those discussed in the following table:
Power supplies wear out over time, especially if they're overheated or overstressed. If
the power supply can't provide adeq
Linux Facts and Vocab
pwd Displays the path of the current directory (Present Working Directory) on the screen.
ifconfig Displays the IP address and the subnet mask assigned to this system.
ls - Displays a list of files and subdirectories hat exist within
Windows Operating System Facts & Vocab
An operating system is a set of programs that acts as an interface between the applications that are
running on a computer and the computers hardware. They perform such actions as:
Receiving user input from input har
Chapter 6 Questions
4. What is the most important principle in designing networks?
Needs analysis is the most important principle in designing a network. Which takes the
needs of an organization over short and long terms into
1. How does a layer-2 switch differ from a router?
Layer-2 switch - operates at the data link layer, using the data link layer address to
forward packets between network segments.
Router- operates at the network laye
Cookies Are Us
Cookies Are Us runs a series of 100 cookie stores across the Midwestern U.S. and central
Canada. At the end of each day, the stores express mail a diskette or two of sales and inventory
Chapter 5 Questions
How is TCP different from UDP?
TCP uses a hand shake method, that sends and receives data but uses acknowledge
message to tell the other end that the message was received and correct.
UDP is more of a f
Chapter 4 Mini Case III
Once Clarence has verified there is no increase in the network traffic, he needs to be looking
inside the network for errors or a blockage for the traffic. Most likely this case show