NICs Flashcards
What is Latency?
Latency is the delay between a packet being sent and received
How do we measure Latency?
We commonly measure Latency in milliseconds
What is Bandwidth
The amount of data that can be transmitted at one time
What is the Bandwidth of a Cat5e cable?
1 Gigabit per second
What do the Orange cables in an ethernet do?
Used to transmit data to other devices
What do the Green cables in an ethernet do?
Used to receive data from other devices
What do the Blue cables in an ethernet do?
Used for high speed internet and POE (Power Over Ethernet)
What do the Brown cables in an ethernet do?
Used solely for high speed internet and POE (Power Over Ethernet)
What is a Network?
A series of computers linked together
How does Wi-Fi work?
It uses radio waves to send information we normally use either 2.4GHz or 5GHz bands
How does Fiber work?
Fiber sends data using light and glass
How much faster is Fibre than Ethernet?
About 100X
Types of Internal Storage?
HDDs
SSDs
RAM
Is RAM Volatile or non Volatile?
Volatile
What does volatile mean?
Volatile means it is a storage device that requires power to hold data
What is the order of wires in an ethernet?
Orange Striped, Orange, Green striped, Blue, Blue Striped, Green, Brown Striped, Brown
What is Data Redundancy?
Making sure your data is safe so it wont be lost
What is Striping?
Storing data across 2 drives with data alternating where data is being stored for example abcd would be stored on drive 1 as ac and on drive 2 as bd
What is RAID 0?
It has 2 drives and the data is split every other piece on each drive which increases the speed this is called striping
What is RAID 1?
It has 2 drives and the data is mirrored on both of the drives
What is RAID 10?
It has 4 drives and is a combination of RAID 1 and RAID 0 allowing it to double Read speeds and Increase Data Redundancy
What is RAID 5?
It has 3 drives minimum like striping but each drive contains parity on one of the other drives
What is a Disaster Recovery Plan?
A document detailing how to recover from a series of disasters
What are the 3 types of disaster recovery plan and what are their benefits?
Cold - Secondary Location
Warm - Secondary Location, Equipment at Site, Connectivity at location
Hot - Secondary Location, Equipment at Site, Connectivity at location, Active Before Failover
