Flashcards
Module 14
Flashcards do conjunto (10)
- 1EXPLAIN THE PHYSICAL CONNECTOR, RJ-11 & RJ-45 CABLINGRJ-11:
- a traditional connector for phone cable
- contains four internal wires in two sets of twisted pairs(would be little metal contacts in the physical connector itself that would make contact with the internal copper core of the wire)
RJ-45(physically wider due to extra wires)
- a traditional connector for an Ethernet cable
- contains eight wires in four sets of twisted pairs
RJ-11 CHARACTERISTICS:
RJ = Registered Jack
- has a 6 position, 4 connector configuration(6P4C configuration - means that it can accommodate 6 wires, has 6 channels but only 4 are used for a standard phone line)
- primarily used for voice/data applications(phones, modems, ADSL lines)
- support 24 Mbps maximum bandwidth
RJ-45 CHARACTERISTICS:
- 8 positions 8 connector configuration known as 8P8C(all eight wires are used)
- primarily used for data applications (Ethernet networks)
- supports 10 gbps maximum bandwidth - 2EXPLAIN THE PHYSICAL CONNECTOR, RS-232 PORTS?RS-232:
- just defines a standard for serial communication(transmission of data one bit at a time)
- most commonly implemented with a DB9 connector (9 pins into 2 rows(1 row of 5 & 4). D stands for D-sub & 9 indicted the number of pins)
- can be used with other connectors dependent on the device, such as printers
- often referred to as "com port"(com = communications)
RS-232 CHARACTERISTICS:
RS = Recommended Standard
- used most commonly for devices with simple configuration or minimal data transfer as only one bit at a time(mouse, UPS(uninterruptible power supply), external modem. early PDA(synchronization) often used the com port)
- defines the electrical characteristics and timing of signals but the physical connector was most often just the DB9, very unlikely that you would find a com port on most modern systems.
- superseded by USB - 3EXPLAIN THE PHYSICAL CONNECTOR, BNC?BAYONET NEIL-CONCELMAN CONNECTOR(BNC):
- traditionally used with coaxial cable(but not the same cable that's used for cable TV or cable Internet, BNC is thinner)
- used in early Ethernet networks (10Base2(10Mbps baseband transmission & 2 indicates it went twice as far as 10BaseT) - also known as "Thinnet")
- twist-lock ends(inserted over the connector where a cylinder could twist which would lock it into place)
- sometimes referred to as a "British Naval Connector"
BNC CHARACTERISTICS:
- dependent on the equipment, but commonly used with radio frequency(RF) equipment(radio, testing, or diagnostic equipment, any device carrying video signals may still use BNC connectors)
- designed to match the resistance or impedance characteristics of the cable being used(has an impedance of 50 or 75 ohms, so the connector itself should not add any resistance to the cable)
- not common in an Ethernet network anymore but may find in industry-specific equipment - 4EXPLAIN THE PHYSICAL CONNECTORS, RG-59 & RG-6?Both are used with a thicker heavier gauge coaxial cable than the Thinnet.
RG-59:
- traditionally used with a coaxial cable that is a lighter gauge wire with thinner insulation and shielding than RG6
RG-6:
- traditionally used with a coaxial cable that is a heavier gauge wire with thicker insulation and more shielding
RG-59 CHARACTERISTICS:
RG = Radio Guide
- used most commonly for cable TV in early installations or closed-circuit TV systems
- the smaller conductor could not achieve the same signal quality as RG6
- it's lesser shielding was adequate for the lower end MHz value of analog transmissions, but not for the higher GHz levels we find today
- so a poor choice for modern digital TV or Internet
RG-6 CHARACTERISTICS:
- used most commonly for modern (digital) cable TV or Internet service (over a cable modem)
- the larger conductor provides better signal quality
- improved shielding was adequate for the higher GHz levels of digital signals
- good choice for modern digital TV or Internet - 5EXPLAIN THE PHYSICAL CONNECTOR USB?USB:
- most widely used connexion for current peripheral devices
- superseded many different interface Connections(such as mouse/keyboard, printers/scanner/multifunction, external storage, game controller, camera. All use USB now.)
USB CHARACTERISTICS:
- designed to carry both data & power over a single connection(will also charge)
- currently, three generations which increased speed/capacity of interface(1.x 2.0 3.x, x including sub-variations)
- hot-pluggable(can plug in and out at any time without having to shut anything down), any device can use any receptacle that fits, little to no device configuration - 6EXPLAIN THE PHYSICAL CONNECTOR VARIANTS OF USB?USB VARIATIONS:
- Standard connectors(Type A-computer interface and Type B - device interface), most commonly found in printers/scanners/multi-function units
- Mini(Mini-A, B, AB(accommodate both), physically smaller connector, commonly found in cameras or smaller devices where space is limited)
- Micro(Micro-A, B, AB, physically smaller connectors than mini, most commonly found in newer mobile devices (cellphones, GPS, PDA))
- Micro B - 3.0(only available with USB 3.0 devices, not backward compatible with 2 or 1.x devices, designed for the current high-speed requirements of newer devices
- Type C(newest USB interface, the symmetrical Oval shape is reversible, comparable in size to that of mini, supports the higher speeds currently available(up to 10Gbps), is not backward compatible and only usable with USB 3 - 7EXPLAIN THE PHYSICAL CONNECTORS, DB9, LIGHTING CABLE?DB9:
- commonly implemented with simple serial devices (such as mouses, early PDAs, the management interface for com ports (RS-232 devices such as UPS, routers, diagnostic equipment))
DB9 CHARACTERISTICS:
- DB = D-subminiature/D-sub
- DB9 is always a serial data transfer meaning that it transfers one bit at a time(hence used for simpler devices)
- uses a 9 pin configuration in two rows,(1 of 5, 1 of 4)
- largely superseded by USB and other interfaces
- rarely used with modern devices
LIGHTNING CABLE:
- propriety apple connector (iPhone, iPod, iPod)
- primarily used to charge devices
-also supports data transfer and audio
LIGHTNING CABLE CHARACTERISTICS:
- 8-pin connector introduced with iPhone 5 and iPad 4 as a replacement for the 30 pin predecessor
- significantly smaller than the previous connector
- reversible connection
- not backward compatible
- works with many newer apple devices(magic mouse/keyboard/trackpad/pencil, Airpod charging, beats headphones/speakers) - 8EXPLAIN THE PHYSICAL CONNECTORS USED WITH SCSI?SMALL COMPUTER SYSTEM INTERFACE(SCSI):
- SCSI uses a variety of connectors dependent on the device(most are fairly large and have a high pin count(50/68))
-SCSI is a bus technology(meaning devices can connect to a central bus and are "Daisy chained")
- devices need to be controlled by a host controller, typically built into the motherboard or as an expansion card
SCSI CHARACTERISTICS:
- most commonly used as an interface for hard drives, but supports a wide range of other peripheral devices
- SCSI has undergone a number of revisions to improve its specifications(data transfer rates of fast, ultra & wide - versions 1, 2, & 3)
- able support up to 8 devices (including the host controller) in a Daisy-chain in early implementations, 16 in later revisions
- a common interface in service systems that required more drives or peripherals, not as common in client systems - 9EXPLAIN THE PHYSICAL CONNECTOR FOR eSATA INTERFACE?EXTERNAL SERIAL ADVANCED TECHNOLOGY ATTACHMENT(eSATA):
- is an extension to the serial ATA interface that allows for SATA drives to be attached externally
- SATA itself largely replaced the IDE interface of hard drives in client systems
- SATA supported much faster data transfer setups than IDE and easier to get more drives due to the small interface
eSATA CHARACTERISTICS:
- an alternative for attaching external drives(faster data transfer rates than USB2 or FireWire but requires a separate power connector)
- uses a point-point interface (unlike a bus, no Daisy-chaining of devices, multiple connections are typically available, however, would likely require an expansion card)
-USB 3.0 matches or exceeds the transfer rates of eSATA - 10EXPLAIN THE PHYSICAL CONNECTORS, MOLEXMOLEX CONNECTORS:
- provide the power for your internal PC components
- varying types of connectors dependant on the device(common examples include the power connections for hard drives, optical drives, floppy drives, motherboard, CPU or graphic card or fans)
- connector is normally a white plastic tip with just metal pins inside of it and easily identified with the colored wires coming out of them(usually red black and yellow)
MOLEX CHARACTERISTICS:
- usually, 4-pin connectors in a single row which is most commonly used for hard drives or optical drives
- and likely see a 4-pin connector in 2 rows(looks square) which is most commonly used for CPU or a graphics card
- and a 20 pin connector most commonly used for the motherboard(has additional colored wires as there are a number of different components drawing from that single connection)
- connectors are used for power only, no data
- almost always used internally only
- Molex connections are extended directly from the main power supply of the PC
Informações
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- Learning Technology Specialist CompTIA A+ (Core 1) FlashCards sobre Module 14, criado por Chantelle Knight em 11-09-2021.
- Criado por
- Chantelle Knight
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