Distributed Systems and Networks Flashcards
1
Q
ACID
A
Atomicity
Consistency
Isolation
Durability
2
Q
Atomicity
ACID
A
A transaction must be all or nothing
3
Q
Consistency
ACID
A
A transaction takes the system from one consistent state to another
4
Q
Isolation
ACID
A
Each transaction must be performed wihtout interference from other transactions
5
Q
Durability
ACID
A
After a transaction has completed successfully, all its effects are saved in permanent storage
6
Q
IPv6 address conventions
2001:0630:00d0:f500:0000:0000:0000:0064
A
- can omit leading 0s in a block
- can replace sets of repeating 0s with “::”
- e.g. 2001:630:d0:f500::64
7
Q
IPv4 subnet address availability
A
- First is reserved for the network address
- Last is the broadcast address
- One is required for the router
- => 524/253 usable address
8
Q
IPv4 subnet CIDR/mask values
A
- /24 : 256 addresses
- As the number increases (/25…), half the number of addresses (128)
- As the number decreases (/23…), double the number of addresses (512)
9
Q
IPv6 subnet split
A
Always /64
10
Q
TCP/IP stack
A
- Physical
- Link
- Network
- Transport
- Application
11
Q
DHCP
A
How systems get a dynamic IP address