Operating system
A computer is composed of what two main parts
hardware / software
What components are needed to be considered a mobile device
Client which can be held in the hand
Employs a mobile OS (Operating System)
Uses a touchscreen interface as the primary user interface
Uses a wireless network connection
what features are apart of Microsoft office
Word, Excel, PowerPoint, Outlook, OneNote,
Publisher, Access, Skype for Business, Project, Teams, Visio
Compare and contrast bios and uefi
BIOS is non-volatile memory in which lines of code are permanently stored on motherboard ROM
BIOS is code used to initialize motherboard hardware when computer is first started
UEFI is the replacement for BIOS
Newer/more user friendly
What are the 2 prominent features on the motherboard
form factor and chipset
Form factor refers to physical dimensions of the motherboard and describes the shape, size, and mounting characteristics of the motherboard and affects case layout as well as positioning of components on the motherboard
Chipset defines the type of CPU and RAM the motherboard requires and determines the built-in devices it supports
Chipset two main functions called Northbridge and Southbridge
Northbridge primary purposes is to provide a high-speed
Southbridge serves as the interface between the CPU and low speed
what are expected features of an Operating System
Graphical User Interface (GUI), Command prompt, Security, File system, update, network, kernel, program execution
List the security issues for mobile devices
small size can be easily lost/stolen, inherent & automatic wireless connectivity more prone to compromise, Integrated radios, Unsafe/or untested applications for security flaws
what is clock speed used for
Fastest speed at which a CPU can operate
List 6 storage media
Hard Disk Drive
Solid State Drive
Hybrid Drive
Optical Drives
Magnetic Tape
Flash Drives
What are the types for Bios and operating system
Bios-firmware
OS- system software
What does walled garden do?
restricts third party apps
What are the two types of RAM and list their charicteristics
Dynamic RAM (DRAM)
Most common form of computer memory
Considered dynamic because memory controller refreshes
operations thousands of times per second
Must be dynamically refreshed all the time or it will forget
what it is holding
Due to the constant refreshing it slows down the memory
Static RAM (SRAM)
“Static” because it never has to be refreshed, holding data if
power is applied
Holds data via a circuit called a flip-flop
Significantly faster than DRAM, but due to more parts it
takes up more space giving less memory per chip also
making it more expensive
What are different Operating systems that use UNIX and which doesn’t?
Chrome, Linux, MacOS
Not Microsoft windows
What does side loading do?
for unofficial third-party apps or user-directed individual apps for installation
In order list the start up sequence
Turn on, boot strap, turn on power supply: check voltage, turn on cpu, run post, load bios (bootstrap load finder: find os), CMOS:boot order, storage drive
What is bus architecture and list the three bus connections
Data and instructions are transferred between these parts on data pathways called buses
System bus or front side bus is the connection between major components
of a computer system and is made up of the following busses:
Address bus refers to connections between CPU and main memory as well
as addressable locations
Control bus carries signals that report status of various devices
Data bus is a bi-directional communication route through which data travels
between CPU, memory and peripherals
What are the two os in mobile devices
ios, android
What are the two types of memory failure and what can happen as a result
Usually produces a NMI (Non-Maskable Interrupt) or a GPF (General
Protection Fault)
NMI – an interrupt the CPU cannot ignore
GPF – system condition that causes a Windows app to crash
Most common cause of a GPF is two apps trying to use the same
block of memory or one app trying to use memory assigned to
another app
What does the cpu componet provide and what are the three structures inside
control unit, ALU (arithmetic logic unit), and registers