- WIFI 5 - 5 GHz frequency with speeds up to 3.5 Gbps - supports up to 4 simultaneous clients

Focus On Flashcards by Callie Howell

RJ-45 Cable

connector used to terminate a copper twisted-pair ethernet cable

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F Type connector

used with coaxial cables

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DB-9

used to terminate an RS-232 serial cable
- connected to serial port or external modem

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RJ-11 connector

used to terminate cables for phone lines

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802.11a

5 GHz frequency to provide wireless networking at speeds up to 54 mbps

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802.11b

2.4 GHz frequency with speeds up to 11 Mbps

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802.11g

2.4 GHz with speeds up to 54 Mbps

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802.11n

2.4 GHz frequency with speeds up to 108 Mbps or a 5 GHz frequency with speeds up to 600 Mbps
- supports MIMO
- The nominal data rate is 72 Mbps per stream or 150 Mbps per stream for a 40 MHz bonded channel.

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802.11ac

WIFI 5
5 GHz frequency with speeds up to 3.5 Gbps
supports up to 4 simultaneous clients

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802.11ax

2.4 GHz and 5 GHz frequencies with speeds up to 9.6 Gbps
- MU-MIMO

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AAAA record

associates your domain name with an IPv6 address

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A record

associates domain name with IPv4 address

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MX record

used for outgoing and incoming traffic

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SOA

start of authority resource record indicates which DNS is best source of information for the specified domain

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cable stripper

used to remove the plastic jacket from an ethernet cable to access its internal wires

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cable tester

ensures a cable is properly created as a patch cable or a crossover cable

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punchdown tool

used to connect an ethernet cable to the back of a patch panel or network wall jack

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crimper

tool used to attach an RJ-45 plastic connector to an unshielded twisted pair or STP or patch cable

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loopback plug

test a port

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F12

enter boot menu/BIOS

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F11

boot into recovery menu

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advanced boot options

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port 137

NetBIOS

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VDI

virtual desktop infrastructure
- using virtual machines as a method of provisioning workstations for corporate users

ECC

error correcting code that has built-in error correction security and maintains integrity

private IP addresses

10.x.x.x, 172.16.31.x.x and 192.168.x.x

DHCP port

HTTP port

POP3 port

110

emulator

emulate hardware without running code directly

cat 6a

10 Gbps up to 100 m

cat 6

10 Gbps up to 55m

OLED

Led display that works without a backlight and emits own light - thinner and lighter

3 DC voltages

3.3, 5, 12

QoS

using a network protocol to prioritize certain traffic types over others.

port replicator

simple device used to extend range of ports on a desk

what is phone flickering caused by

failing backlight

jitter

time delay when sending packets over network connection

embedded system

designed to perform specific function

IPS display

good color quality, no viewing angle issues

TN display

- good with gamers because faster refresh rates

printer control language

faster outputs of lower quality

MicroATX motherboard dimensions

9.6 x 9.6

inverter

acts as power supply for light source

TCP/IP printer

will eliminate any compatibility issues with different OS

technology used in unlicensed long range fixed wireless system

microwave

technology used indoors to locate position

bluetooth

wireless mesh network

wireless network topology where all nodes, including client stations, can provide forwarding and path discovery to improve coverage and throughput compared to using just fixed access points and extenders

cloning

function that allows you to fully copy an existing virtual machine and its current configuration

DNS port

crossover cable

connect two similar devices to create a network

redundant power supply

requires a compatible motherboard. This configuration is more common in server systems than on desktop PCs

modular power supply

has power connectable cables that are detachable from the unit

continuous POST beep code

system memory issues

fuser unit

squeezes the paper between a hot roller and a pressure roller so that the toner melts onto the paper's surface.

transfer roller

applies a positive charge to the underside of the paper. This causes the toner on the drum to be attracted to the paper

NVMe

packaged for installation to a PCIe slot as an expansion card or an M.2 slot.

what does SMART measure as a performance indicator

IOPS