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CompTIA A+ 220-1101 Core 1 Study Flashcards Part 5
This deck covers essential connectors, memory types, storage devices, and RAID configurations for the CompTIA A+ 220-1101 Core 1 exam.
RJ-11 Connector
- A phone line connection or port found on modems, telephones, and house phone outlets.
- 6 Position, 2 Conductor (6P2C)
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Key Terms
Term
Definition
RJ-11 Connector
- A phone line connection or port found on modems, telephones, and house phone outlets.
- 6 Position, 2 Conductor (6P2C)
RJ-45 Connector
- A connector on an Ethernet cable, containing four twisted pairs of wires.
- Like a telephone cable connector (RJ-11), but slightly wider.
- 8 Positi...
F-Type Connector
- Most common coaxial cable connector which features a screw on attaching mechanism.
- Uses DOCSIS
ST (Straight Tip) Connector
- A type of connector used by fiber-optic cables and can be used with either single-mode or multimode fiber-optic cables.
- Connector does not support...
SC (Subscriber Connector)
- A fiber-optic cable connector that snaps and locks into place.
LC (Lucent Connector)
- A small form-factor fiber optic connect
- Uses a 1.25 mm furrule, half the size of the ST.
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| Term | Definition |
|---|---|
RJ-11 Connector | - A phone line connection or port found on modems, telephones, and house phone outlets.
- 6 Position, 2 Conductor (6P2C) |
RJ-45 Connector | - A connector on an Ethernet cable, containing four twisted pairs of wires.
- Like a telephone cable connector (RJ-11), but slightly wider.
- 8 Position, 8 Conductor (8P8C) |
F-Type Connector | - Most common coaxial cable connector which features a screw on attaching mechanism.
- Uses DOCSIS |
ST (Straight Tip) Connector | - A type of connector used by fiber-optic cables and can be used with either single-mode or multimode fiber-optic cables.
- Connector does not support full-duplex transmissions and is not used on the fastest fiber-optic systems |
SC (Subscriber Connector) | - A fiber-optic cable connector that snaps and locks into place. |
LC (Lucent Connector) | - A small form-factor fiber optic connect
- Uses a 1.25 mm furrule, half the size of the ST. |
Punch down Block | - A panel of data receptors into which twisted pair wire is inserted, or punched down, to complete a circuit. |
microUSB | - Smaller than a standard USB and used usually for mobile devices to charge and pass information. |
miniUSB | - This connector is used by portable electronic devices, such as digital cameras and some portable storage devices. |
USB-C | - 24 pin double sided USB connector
- Smaller than regular USB connector
- Used for USB, Thunderbolt, etc. |
Molex Connector | - 4 pin power connector used by optical drives, hard drives, and case fans
- Keyed to prevent it from being inserted into a port improperly.
- Provides +12V and +5V |
Lightning Port | - The proprietary Apple connector used on Apple iPhones, iPods, and iPads for power and communication |
DB-9 Connector | - A type of connector with nine pins that's used in serial communication and conforms to the RS-232 standard.
- Built for modem communication
- Now used as a configuration port |
Virtual RAM | - Swap File
- Swap unused app data to storage to free up RAM |
SODIMM (Small Outline Dual Inline Memory) | - Used in laptops
- Smaller form factor |
DDR3 Memory | - Max 16GB per DIMM
- Twice the data rate as previous gen |
DDR4 Memory | - Max 64GB per DIMM
- Speed increases over previous generation |
DDR5 Memory | - Faster Data Travel between memory and motherboard
- Still max 64GB per DIMM |
ECC (error-correcting code) RAM | - Data detects and corrects errors on the fly
- Looks identical to non-ECC memory |
Multi-Channel Memory | - Dual-channel, triple-channel, quad-channel
- Should always match (exact matches are best)
- Memory modules slots are often colored differently
- Maximizes throughput |
HDD (Hard Disk Drive) | - The most common type of hard drive in computers. It includes spinning platters and read/write heads.
- Speed to Latency (RPM/MS)
- 15,000 (2ms)
- 10,000 (3ms)
- 7,200rpm (4.16ms)
- 5,400rpm (5.55ms)
- Typically 3.5" |
SSD (Solid State Drive) | - Non volatile memory (No moving parts)
- Faster than HDD
- Communicate over SATA, NVMe, and PCIe
- Typically 2.5" drive |
NVMe (Non-Volatile Memory Express) | - Lower Latency & Higher Throughputs
- Runs off M.2 interface |
M.2 | - Can use a PCIe bus connector
- Different connectors on drive (B, M, or B&M)
- Won't always support NVMe (May be using AHCI)
- Replaced mSATA quickly |
Flash Drives | - Use Flash Memory = EEPROM
- Electronically Erasable Programmable Read-Only Memory
- Limited number of writes allowed
- You can always read the information
- Memory Cards: SD, microSD, miniSD, CompactFlash, xD, etc. |
Optical Drives | - Small bumps are read with a laser beam
- CD-ROM, DVD-ROM, Blu-Ray
- Can be an internal or external drive |
RAID (Redundant Array of Independent Disks) | - Has different levels
- Some levels are redundant, some levels are not
- Can be inexpensive disks |
Raid 0 | - Striping = Splits data evenly between two disks
- High-Performance
- No Redundancy |
Raid 1 | - Mirroring = Files are duplicated between 2 or more drives
- High disk utilization - files are doubled
- High redundancy - Drive failure does not affect data accessibility |
Raid 5 | - Striping with Parity = Data is evenly split between drives along with a parity block in each drive
- Requires at least 3 drives
- Efficient disk use and high redundancy |