CompTIA® Server+ : Difference Between System Board Types, Features, Components
1. System Hardware
1.1 Differentiate between system board types, features, components and their purposes
DIP (Dual Inline Package) switches : It is a set of switches found on motherboards, expansion cards which hold configurations of hard drives, modems etc and select interrupt request. These are used in place of Jumper blocks. Now a days PNP is used in computers and manual configurations are not required, so DIP switches have become uncommon.
Jumper: It is a small connector used to open or close electrical circuit. It regulates electrical circuit board with its two or more connecting points.
Given below are important bus types and their characteristics:
Data Bus Width
Not used in modern computers
Use jumpers to configure
Backward compatible with ISA, uses software/jumpers for configuration
VESA or VL bus
Backward compatible with ISA cards
Supports Plug and Play
Supports Plug and Play
Used in laptops, also know as PC card
Speed of Processor
Used in video cards
On board Components:
NIC (Network Interface Card): It is an hardware adapter card. It contains a transceiver for sending and receiving data frames to and from a network. It also contains Data Link layer hardware needed to format sending bits and to decipher received frames.
Video Card: It is an expansion card which generate a feed output image to display on monitors.
Audio Card: It is also called as Sound Card. It is an expansion card handle input and output audio signals to and from a computer under control of computer programs.
USB (Universal Serial Bus): designed to standardize the connection of computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters) to personal computers, both to communicate and to supply electric power.
HID(Human Interface device): It is a device which takes input from humans and delivers output to humans
Serial Port: It is serial communication physical interface through which information transfers in or out one bit at a time.
Parallel port: It is a parallel communication physical interface It is also known as printer port.
PCI : Important features of PCI 2 bus are given below:
PCI-X 2.0 is a higher speed version of the PCI X ( more specifically PCI-X 66 and PCI-X 133) standard.
PCI X 2.0 provides for two new speed grades: PCI-X 266 and PCI-X 533, offering up to 4.3 gigabytes per second of bandwidth
PCI 2 is up to 32 times faster than traditional PCI bus speed
Doubles and quadruples PCI-X bandwidth.
Full hardware and software backward compatibility (i.e. compatible with PCI, and PCI X).
Uses the same form factor, pin-outs, connector, bus widths, and protocols.
PCI-X 2.0 offers enhanced system reliability. ECC support has been added, providing automatic single-bit error recovery and double-bit error detection.
The original specification for PCI supports 3 PCI devices on a PCI Bus. There will usually be 3 expansion slots in a PCI bus. Note that you can increase the number of PCI devices that can be connected by increasing the number of PCI buses.
AGP (Accelerated Graphics Port) : It is used for attaching graphics cards for video displays to motherboard.
Riser Cards : Riser cards allow the addition of expansion cards, such as video and graphic cards, to a system that doesn't allow for perpendicular placement of the expansion cards. Riser cards plug into and rise above the system board, while providing additional expansion card slots. Riser cards enable the connection of additional cards in a parallel orientation to the system board, as opposed to perpendicular, which conserves space within the system case.
Disclaimer:TutorialsWeb.com is neither associated nor affiliated with CompTIA® or any other company. A+™, Network+™, Security+™, Server+™ are trademarks of CompTIA® organization and duly acknowledged. The Cram Notes material is a copyright of TutorialsWeb.com and the same is not approved or endorsed by respective certifying bodies.