CompTIA A+ 1001: Weak Spots #1 - General Flashcards
802.11a - Frequency & Speed?
5 GHz
54 Mbps
802.11b - Frequency & Speed?
2.4 GHz
11 Mbps
802.11g - Frequency & Speed?
2.4 GHz
54 Mbps
802.11n - Frequency & Speed?
WIFI4
2.4 GHz + 5 GHz
600 Mbps
MIMO = Multiple In/Multiple Out
802.11ac - Frequency & Speed?
WIFI5
5 GHz
1 Gbps
Improves MIMO Technology
ATX - Size?
12” x 9.6”
MTX (Micro-ATX) - Size?
9.6” x 9.6”
MITX (Mini-ITX) - Size?
6.7” x 6.7”
Used mostly in Small Home Theater Systems, Point of Sale Systems
LCD - Lighting Type?
Liquid Crystal Display
Fluorescent Backlights
LED - Lighting Type?
Monitor Backlight Technology
Light Emitting Diodes
OLED - Lighting Type?
Does not NEED Backlight-Self Illuminating.
Thus, it’s Smaller/Thinner, but more expensive.
RAID0 - Method, Min # of Drives, Common Usage?
Stripping = SPEED
Requires min of 2 Drives.
Heavy Read Operations
- If 1 Drive fails, all Data Lost.
+ High Performance Speed
- Data is LOST if one disk fails
RAID1 - Method, Min # of Drives, Common Usage?
Mirroring = REDUNDANCY
Requires atleast 2 Drives
- Primary Purpose of RAID1 is Redundancy - Slows things down because you’re Mirroring/Writing the Data Twice.
+ Fault Tolerance, High Read Performance
- LAG for Write Ops, Reduced Storage by 50%
RAID5 - Method, Min # of Drives, Common Usage?
Stripping + Parity = SPEED + REDUNDANCY
Requires Minimum of 3 Drives.
Normal File Storage & App Servers
- Stripping occurs with 2 of the 3 Drives, and the 3rd Drive does Parity.
- If 1 Drive Fails, data can easily be recreated - Replace the Failed Drive and Rebuild the Array.
- If more than 1 Drive Fails, you can’t rebuild the Array.
+ Speed and Fault Tolerance
- LAG for Write Ops, Reduced Storage by 33%
RAID10 - Method, Min # of Drives, Common Usage?
Stripping & Mirroring = HIGH SPEED + HIGH REDUNDANCY
Requires Minimum of 4 Drives
Highly Utilized Database Servers
- 2 of the Drives are RAID1 and Mirrored to the other 2 RAID1 Drives
- If you lose a Mirrored PAIR, you are in trouble.
- You can lose 2 Drives as long as they aren’t in the same Mirrored Pair.
- Includes Stripping across two drives for faster performance and Mirroring of the Stripped Array for Safety.
+ Write Performance and Strong Fault Tolerance
- Reduced Storage by 50%, Limited Scalability
RAID6 - Method, Min # of Drives, Common Usage?
Stripping + Double Parity
Requires 4 Drives Minimum
Large File Storage & App Servers
- It’s like RAID5, Stripping with Parity, but instead of 1 Parity Drive you get 2 Parity Drives.
- You can lose up to 2 Drives before Data Loss.
+ Extra Level of Redundancy, High Read Performance
- Low Write Performance, Reduced Storage by 40%
Virtualization Terms: The concept of creating an environment that Imitates full Hardware and Software without relying on the CPU, of one system onto another? Mimics the qualities and logic of one processor to run in another platform efficiently is _______?
Emulation
Emulator
Virtualization Terms: Known as a VMM (Virtual Machine Monitor), which is a type of Virtualization Software that supports the creation and management of VMs by separating a Computer’s Software from it’s Hardware is ______ ?
Hypervisors
Virtualization Terms: A complete model of various complex systems ___ ?
Simulation
VM Networking: ______ Network Connection type that will create a Switch that is usable only by the VMs. The VMs cannot use the Switch to Communicate with the Host or the Internet?
LocalHost
Private
Internal
External
Private
VM Networking: ______ are Network Connection types where the VM’s would be able to communicate across the Internet?
LocalHost
Private
Internal
External
External
VM Networking: ______ Network Connection type where the VMs can only communicate with itself?
LocalHost
Private
Internal
External
LocalHost
VM Networking: ______ Network Connection type where the VM’s are prevented from communicating across the Internet but are able to communicate with other VM’s on the Host and the Host itself?
LocalHost
Private
Internal
External
Internal
Cloud Types: Outsourcing Hardware, Software, Storage, Data Centers, Servers, and Network Space, also known as Platform Virtualization is provided by what Cloud Service?
PaaS SaaS DaaS VDI IaaS
Infrastructure as a Service (IaaS)
Cloud Types: Provides Hardware and Software Tools, fully configured systems to Rent that are setup for specific purposes?
PaaS SaaS DaaS VDI IaaS
Platform as a Service (PaaS)
Cloud Types: Applications distributed centrally hosted and licensed, also known as the Application Service Provider where Users can add new features or functionalities based on their use of the Application based on the agreement with the provider is what Cloud Service?
PaaS SaaS DaaS VDI IaaS
Software as a Service (SaaS)
Cloud Types: Provides full virtualized environments from within a Cloud-Based Service? (Select Two)
PaaS SaaS DaaS VDI IaaS
Desktop as a Service (DaaS)
Virtualized Desktop Infrastructure (VDI)
RAM: DDR3-800 is also known as _____ ?
PC3-10600
PC3-8500
PC3-6400
PC3-12800
PC3-6400
RAM: DDR3-1066 is also known as _____?
PC3-10600
PC3-8500
PC3-6400
PC3-12800
PC3-8500
RAM: DDR3-1333 is also known as _____?
PC3-10600
PC3-8500
PC3-6400
PC3-12800
PC3-10600
RAM: DDR3-1600 is also known as _____?
PC3-10600
PC3-8500
PC3-6400
PC3-12800
PC3-12800
Storage Media: Records information in Tracks and Sectors containing 512 bytes each?
Optical
Magnetic
Flash
Magnetic
Storage Media: Stores data in a continuous spiral?
Optical
Magnetic
Flash
Optical
Storage Media: Used on Memory Cards?
Optical
Magnetic
Flash
Flash
Storage Media: Records information in a Series of Lands and Pits?
Optical
Magnetic
Flash
Optical
Storage Media: Uses a Laser Light to read data?
Optical
Magnetic
Flash
Optical
Storage Media: Records information in concentric circles?
Optical
Magnetic
Flash
Optical
Storage Media: Information is recorded from the Center outward?
Optical
Magnetic
Flash
Optical
Storage Media: Stores data on double-sided platters?
Optical
Magnetic
Flash
Magnetic
Storage Media: Information is recorded from the outer edge inward?
Optical
Magnetic
Flash
Magnetic
Storage Media: Used in Solid State Drives?
Optical
Magnetic
Flash
Flash
DLP - Lighting Type?
Moving Mirrors
PBQ: Wireless Encryption Security Protocols - WEP?
IV
TKIP
PSK
AES
IV (Initialization Vector)
PBQ: Wireless Encryption Security Protocols - WPA/WPA2?
IV
TKIP
PSK
AES
TKIP (Temporal Key Integrity Protocol)
PBQ: Wireless Encryption Security Protocols - WPA?
IV
TKIP
PSK
AES
PSK (Pre-Shared Key)
PBQ: Wireless Encryption Security Protocols - WPA2?
IV
TKIP
PSK
AES
AES (Advanced Encryption Standard)
Strongest/Highest Level of Encryption on Wireless for A+ Exam
RAM: DDR4-1600 - Transfer Rate and PC4 Name?
12,800 MB/s – PC4-12800
19,200 MB/s – PC4-19200
21,333 MB/s – PC4-21333
17,066 MB/s – PC4-17000
12,800 MB/s
PC4-12,800
RAM: DDR4-2133 - Transfer Rate and PC4 Name?
12,800 MB/s – PC4-12800
19,200 MB/s – PC4-19200
21,333 MB/s – PC4-21333
17,066 MB/s – PC4-17000
17,066 MB/s
PC4-17000
RAM: DDR4-2400 - Transfer Rate and PC4 Name?
12,800 MB/s – PC4-12800
19,200 MB/s – PC4-19200
21,333 MB/s – PC4-21333
17,066 MB/s – PC4-17000
19,200 MB/s
PC4-19200
RAM: DDR4-2666 - Transfer Rate and PC4 Name?
12,800 MB/s – PC4-12800
19,200 MB/s – PC4-19200
21,333 MB/s – PC4-21333
17,066 MB/s – PC4-17000
21,333 MB/s
PC4-21333
Troubleshooting Theory: Step 6?
Document your Findings, Actions, Outcomes, Lessons Learned
- Identify the Problem
- Establish a Theory of Probable Cause (Question the Obvious first.)
- Test the Theory to determine the Cause.
- Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Verify FULL System Functionality and, if applicable, Implement Preventative measures.
- Document Findings, Actions, Outcomes - Lessons Learned
Troubleshooting Theory: Step 3?
Test the Theory to determine the Cause
- If the Theory isn’t Confirmed, Re-Establish a New Theory
- Escalate the Issue when necessary.
Troubleshooting Theory: Step 1?
Identify the Problem
- Talk to the User
- Identify the Problem
- Establish a Theory of Probable Cause (Question the Obvious first.)
- Test the Theory to determine the Cause.
- Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Verify FULL System Functionality and, if applicable, Implement Preventative measures.
- Document Findings, Actions, Outcomes - Lessons Learned
Troubleshooting Theory: Step 5?
Verify FULL System Functionality, and if applicable, implement Preventative Measures
- Identify the Problem
- Establish a Theory of Probable Cause (Question the Obvious first.)
- Test the Theory to determine the Cause.
- Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Verify FULL System Functionality and, if applicable, Implement Preventative measures.
- Document Findings, Actions, Outcomes - Lessons Learned
Troubleshooting Theory: Step 2?
Establish a Theory of Probable Cause
- Question the Obvious FIRST
- Identify the Problem
- Establish a Theory of Probable Cause (Question the Obvious first.)
- Test the Theory to determine the Cause.
- Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Verify FULL System Functionality and, if applicable, Implement Preventative measures.
- Document Findings, Actions, Outcomes - Lessons Learned
Troubleshooting Theory: Step 4?
Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Identify the Problem
- Establish a Theory of Probable Cause (Question the Obvious first.)
- Test the Theory to determine the Cause.
- Establish a Plan of Action to Resolve the Problem and Implement the Solution.
- Verify FULL System Functionality and, if applicable, Implement Preventative measures.
- Document Findings, Actions, Outcomes - Lessons Learned
