Distributed Systems and Networks Flashcards

1
Q

ACID

A

Atomicity
Consistency
Isolation
Durability

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2
Q

Atomicity

ACID

A

A transaction must be all or nothing

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3
Q

Consistency

ACID

A

A transaction takes the system from one consistent state to another

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4
Q

Isolation

ACID

A

Each transaction must be performed wihtout interference from other transactions

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5
Q

Durability

ACID

A

After a transaction has completed successfully, all its effects are saved in permanent storage

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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
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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
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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)
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9
Q

IPv6 subnet split

A

Always /64

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10
Q

TCP/IP stack

A
  • Physical
  • Link
  • Network
  • Transport
  • Application
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11
Q

DHCP

A

How systems get a dynamic IP address

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