Revision Flashcards
What is RAM?
Volatile memory, which means memory is lost when power is off. Can be read from and written to
What is ROM?
Non-volatile memory, which mean no memory is lost when the power is off. Can be read from but not Written
What are buses?
A communication system that connects and track between the components and devices in the PC
What does the address buss do?
Is used to physically locate data and device
What does the data bus do?
Sends data to and from the CPU and memory
What does the control bus do?
Timings and control signals are sent along it to control the flow of data
What is Cache?
An area of small memory, is used to store frequently accessed data requests to speed up processing
Name as many things that can be used as a backing storage
Hard drives, pen drive, floppy disk, CD-ROM, tape drivers, DVD RV, DVD ROM, zip drivers, USB, cloud
Where is SoDIMM usually intalled?
Laptops
What are AGP specifically design for?
Video card
What does the case, motherboard, and power supply need to conform to?
The same Form factor
What is SATA?
an internal hard drive interface, and a computer bus interface to connects devices (e.g. hard disk drives, optical drives and solid-state drives)
How much Faster is a USB3 compared to USB2?
10 time more faster
Name two parts of the processor
Arithmetic logic unit and control unit (CPU)
How to check that the driver is the most up-to-date driver being used?
check website for diver
Advantage of GUI over CLI
easier to learn and pick up required skills
How would you check that the maximum RAM speed is supported in the motherboard
check the motherboard manual
Software that you would use to help prevent ransomware
anti-malware software
Best way to ensure that a document is safe and secure
Copy the data in an online location
Where does an Ethernet cable plug into?
In a RJ45
What does a firewall prevent?
Prevents all unauthorized traffic
describe a Kernel
loads first, resides in the memory, acts as an interface between the processor and the installed software
Name a video connector that carries both video and sound
HDMI
How do you ensure that a CPU does not overheat?
Heat sink
What does WIMP stand for?
Windows, Icons, Menus, and pointers
How does a wireless keyboard connect?
Blue Tooth
What is a register?
The internal data storage area/memory of a CPU, and is a small amount of high speed RAM contained inside
Name the different types of operating systems
Linus/Unix, Windows, Mac O/S, Netware, Fedora, Amigoas, Oracle, Andriod
Name the different types of applications
Excel, Word, Spreadsheet, Database, Presentation, E-mail
Name the different types of utilities
Firewall, Check disk, Anti-virus, Anti-Malware, file compression, Disk fragmentation
What is a driver?
Software which informs the operating system what resource requirements a device needs
Which is faster, Command line or Graphical User Interface?
Command line is text based, while Graphical User Interface is image/icon based, so command line will load faster
How to get into the bios settings?
check with the manufacturer or pressing a function key while starting up (F2, F4, F6, F8, F10, F12)
How can you change the PC boot up sequence?
By going into the BIOS/CMOS program
What is a PCIe (PCI express)?
an internal slot interface
What type of fire extinguisher should be used on electrical fires?
CO2 fire extinguishers
do not use water or powdered based fire extinguishers
Checking that an area is safe to work, is a process know as?
Risk assessment
When using tools, they should be . . .
Well maintained, appropriate for the job and used properly
What is the PAT test?
This test of portable devices, making sure no damage is done to the plug, lead or the device its self, and checks inside the device for dangerous faults
What is Ergonomic?
The design of equipment to relieve repetitive strain ingury
What is ESD?
Electric static discharge
How would you protect against ESD?
Anti-static wrist band
What could ESD cause?
damage electrical components (e.g. computer/electrical chips)
When wiring a plug, you must ensure that the fuse is the correct . . .
Ampage
What happens when the power supply has poor wattage?
Unexpected shut downs, components will fail (e.g. NIC, RAM chips etc.), blue screens
If you have 4 RAM slots, you should . . .
buy them in pairs
What is a CPU?
The central processing unit process small and large data and instructions
What is ALU?
The arithmetic and logic unit is responsible for logical and arithmetic processing
What is POST?
the Power on self test is a process performed by firmware or software routines immediately after a computer is powered on
What is the Fetch-Execute cycle?
- The CPU fetches the instruction one at a time from the memory
- The CPU decodes
- The CPU executes the instruction
- Repeat until there are no more instructions
This is done as fast as the CPU’s clock speed (2 GigaHertz can carry two billion cycles per second)
Name Input devices
Keyboard, Mouse, touch pad, camera (Picture), microphone
Name output devices
Headphones (Sound), printer, monitor, speakers, LED
What is a core?
A processing unit inside of a CPU
What does a PS/2 port do?
an old connector for keyboard and mice
The word used to write optical disks is . . .
Burning
Name external interfaces
PS/2 port, USB port, DVI video, VGA video, Display port video, HDMI, USB 3.0 port, RJ45 LAN, microphone, line-in/out
What does an Input/Output unit do?
controls data and instruction requests from devices
What is an SSD?
Solid state drive, that doesn’t have any moving parts, but because of that it is hard to break, and also it is faster to access data, uses not much power
What is HDD?
Hard disk drive is a spinning disk where the data is store magnetically. Considered legacy technology
What is a Magnetic disk/drive?
A storage device that uses magnetization to write, rewrite and access data, but are generally slow
