Final questions p2 Flashcards
Define:
File System
Logical collection of files located in a drive
Define:
File Name extensions
They tell the OS which program created it and which opens it
What is the difference between:
Partition VS Volume
Partitions are defined spaces on the drive while volumes are partitions that have been formatted and can have files stored in them
How does the file system resemble a tree?
The drive is the tree while the subfolders are branches and the leaves are the individual files
FAT32 VS NTFS
Why is NTFS better than FAT32?
FAT32 is the old file system until it was replaced by NTFS. NTFS has better features such as
1. Security
2. quotas
3. compression
4. encrypt
What is the
windows os file system conversion command?
convert C: /fs: ntfs
What are the advantages
Dynamic discs has over basic discs?
Basic discs only support simple volumes while dynamic discs can
1. resize volumes
2. make changes without restarting
3. RAID support
What are:
- Spanned volume
- Mirrored volume
- striped volume
- Two drives are treated as one drive
- data is written into two drives at the same time
- chunks of data is written into multiple drives at a time
Define:
- Raid 0
- Raid 1
- Raid 5
Pros? Cons?
- Striped volume. Write speeds are faster as multiple drives carry out the operation but it is not fault tolerant
- Mirrored volume. Write speeds are slower but it is fault tolerant as one drive can fail and the other will be fine
- Striped volume + parity blocks. Parity blocks allow data to be reconstructed if one drive fails.
Define:
Encryption
what two items are needed for encryption?
Encryption is the act of scrambling data so that only authorized people can read it. To encrypt data into cyphertext, you need
1. Cryptographic algorithm
2. Cryptographic key - piece of information that can be used to encrypt or decrypt it later
Define:
AES
Advanced encryption standard. It is the worldwide standard for encrypting data
Difference between:
Authorization VS authentication
Authorization means whether you have the right permissions or not to access certain files or programs
Authention means proving your identity to the system in order to gain access
Difference:
- Offline attack
- brute force attack
- dictionairy attack
- Don’t need direct access to targeted system (ie stealing password list, keylogger etc)
- going through every letter, number, symbol to try and forcibly guess the password
- guessing a person’s password by using entries from the dictonairy
What makes a strong password?
- Longer than 8 words
- Do not use dictionairy words
- use numbers and symbols
- use capitals (except first letter)
Define:
- Computer Worms
- Viruses
- Trojans
All three are malware
1. self-replicating and self-spreading
2. self-replicate but require their victim to continue to spread
3. masquerade as harmless executables in order to get into the victim’s system