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Flashcards: CompTIA A+ Core 1: Serial Cables
What is the greatest benefit of USB?
Standardizing serial data connections
How many pins are in USB-A connectors?
9
How many pins are in USB-B connectors?
5
How many pins are in USB-C connectors?
24
What is the data transfer rate and effective distance of USB 1.1 Low Speed?
1.5Mbps, 3m
What is the data transfer rate and effective distance of USB 1.1 Full Speed?
12Mbps, 5m
What is the data transfer rate and effective distance of USB 2.0?
480Mbps, 5m
What is the data transfer rate and effective distance of USB 3.0 SuperSpeed?
5Gbps, ~3m (standard does not specify a cable length)
What are the other names for USB 3.0?
USB 3.1 Gen 1 and USB 3.2 Gen 1
What is the data transfer rate of USB 3.1 Gen 2?
10Gbps
What is the other name for USB 3.1 Gen 2?
USB 3.2 Gen 2
What is the data transfer rate of USB 3.2 Gen 1x2?
10Gbps
What is the data transfer rate of USB 3.2 Gen 2x2?
20Gbps
Why does USB 3.2 Gen 2x2 double the data rate of USB 3.2 Gen 1x2?
It uses 2 lanes for data transfer rather than 1
What is the greatest benefit of USB-C?
Standardizing USB connections
What is Thunderbolt?
A high speed serial connector that is able to provide power and data, it is based on the Mini DisplayPort (MDP) standard
What is the data transfer rate and connector of Thunderbolt v1?
10Gbps per channel, with 2 channels, MDP
What is the data transfer rate and connector of Thunderbolt v2?
20Gbps, MDP
What is the data transfer rate and connector of Thunderbolt v3?
40Gbps, USB-C
What is the maximum distance of a copper Thunderbolt cable?
3m
What is the maximum distance of an optical Thunderbolt cable?
60m
How many devices can be daisy-chained (connected in series) with Thunderbolt?
6 devices
What are the 2 names for older serial connectors?
DB-9 and RS-232
Where are you most likely to find DB-9 connectors?
Older devices, modems, and printers
What is DB-9 most commonly used for today?
Configuration ports for network devices