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Server 2012 MOAC 70-410 > Lesson 10: Configuring IPv5 and IPv6 Addressing > Flashcards

Lesson 10: Configuring IPv5 and IPv6 Addressing Flashcards

1
Q

Length of IPv4 in bits

A

32 bits

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2
Q

Subnet mask

A

a second 32 bit value of 1 and zeros used to determine’s which bits in an IP address refer to the host and which refer to the network

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3
Q

Class A Network: First octet

A

0 - 127

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4
Q

Class B Network: First octet

A

128 - 191

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5
Q

Class C Network: First octet

A

192 - 223

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6
Q

Class A Network: Number of networks, number of hosts per network

A

Networks: 125
Hosts: > 16 million

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7
Q

Class B Network: Number of networks, number of hosts per network

A

Networks: > 16,000
Hosts: > 65,000

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8
Q

Class C Network: Number of networks, number of hosts per network

A

Networks: > 2 million
Hosts: 254

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9
Q

CIDR

A

Classless inter-domain routing.

Allows for subnet mask that are of any acceptable value, dividing the host and network portions of the IP at any number

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10
Q

ICANN

A

Internet Corporation for Assigned Names and Numbers

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11
Q

RIR

A

Regional Internet Registries – Assigned blocks of IPs by region.

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12
Q

Class A private netowork block

A

10.0.0.0/8

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13
Q

Class B Private network blcok

A

172.16.0.0/12

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14
Q

Class C Private network block

A

192.168.0.0/16

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15
Q

NAT

A

Network Address Translation

NAT routers modifies IP packets to change IP address of sender to its own public address with an identifying port

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16
Q

Proxy server versus NAT

A

Proxy servers function at the application layer, forwarding traffic to specific destinations.

NAT functions at the network layer

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17
Q

Functions of a proxy server not necessarily provided by a NAT router

A

Filtering
Logging
Caching
Scanning

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18
Q

Superneting

A

Combing contiguous networks that all contain a common CIDR prefix into one network address with one CIDR prefix, for replacing multiple entries in the routing table with just one.

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19
Q

3 ways to assign an IPv4 address

A

DHCP
APIPA
Manual config

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20
Q

APIPA IP block

A

169.254.0.0/16

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21
Q

How does a PC performing APIPA assignment know its selected IP is not in use by anyone but it?

A

Does an ARP request

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22
Q

Length of IPv6

A

128 bits

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23
Q

Number of IPv6 addresses available per square meter of the earth (for fun)

A

54 million

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24
Q

Notation of IPv6

A

Colon-hexadecimal format - eight 16-bit hex numbers, separated by colons.

XX:XX:XX:XX:XX:XX:XX:XX
Each X = 8 bits (1 byte) represented by two hex characters

25
Q

When can you replace a IPv6 block with ::

A

When there are two consecutive blocks with all zeros, you can replace those blocks with ::

You can only do this once per IP though

26
Q

When can you remove zeros in an IPv6 address?

A

When a block has leading zeros, you can remove them.

27
Q

What do IPv4 addresses have that IPv6 addresses do not?

A

Subnet masks.

28
Q

In IPv6, network se use what to identify the bits of an IPv6 address that are the network address.

A

We still use CIDR notation.

29
Q

Unlike IPv4, there are no _____ addresses in IPv6

A

Broadcast addresses

30
Q

Three address types in IPv6

A

Unicast
Multicast
Anycast

31
Q

Unicast address

A

one-to-one transmission to / between individual interfaces.

32
Q

Name three types of unicast addresses

A

Global
Link-Local
Unique Local

33
Q

Format Prefix

A

A sequence of bits that IDs the type of unicast. Each unicast address has an FP.

34
Q

Multicast

A

One-to-many transmissions to groups of interfaces identified by the multicast address

35
Q

Anycast

A

Transmission sent from one device to one-of-many – whichever device is closest, as determined by the number of intermediate routers.

36
Q

Global unicast address

A

The equivalent of a registered (public) IPv4 address. Routable on the Internet

37
Q

FP of a global unicast address

A

001

38
Q

TLA

A

Top Level Aggregator. 13-bit globally unique ID allocated to regional internet registries by the IANA

39
Q

NLA

A

Next Level Aggregator. 24-bit field that a TLA uses to create multilevel hierarchy for allocating address blocks to its customers

40
Q

SLA

A

Site Level Aggregator. 16-bit field that organizations use to create internal hierarchy of sites or subnets

41
Q

EUI-64

A

64-bit field derived from the network interface’s MAC addresses, ID-ing a specific interface on the network.

42
Q

Fields that make up a global unicast address (pre-2003)

A 
FP prefix (3 bits)
TLA (13 bits)
Unused, Reserved (8bits)
NLA (24 bits)
SLA (24 bits)
EUI-64 (64 bits0
43
Q

Fields that make up a global unicast address (2003+)

A 
Global routing prefix (48 bit, starting with the FP)
Subnet ID (16 bit. Formerly known as SLA)
Interface ID (64 bit)
44
Q

3 options to subnet an IPv6 address at the subnet ID level

A

One-level (no subnetting. subnet IDs are all 0)
Two-level (same as traditional IPv4 subnets)
Multi-level (As cool as it sounds)

45
Q

For privacy reasons, sometimes the interface ID is not the MAC address but ___

A

A random address. Windows does not use the MAC address by default to address privacy concerns

46
Q

Link-local unicast address

A

Like An APIPA address for IPv4.

47
Q

Network portion of all link local addresses

A

fe80:0000:0000:0000/64

48
Q

Unique local unicast address

A

The IPv6 equivalent to IPv4 private addresses not routable on the Internet. (Class A, B, C private addresses)

49
Q

Fields that make up a unique local address

A 
Global routing prefix that starts with an FP of fd00. The rest are random. (48 bits)
Subnet ID (16 bits)
Interface ID (64 bits)
50
Q

The binary and hex value of the FP for a multicast address

A

11111111

ff

51
Q

Multicast address format

A

FP (8 bits) – IDs the address as a multicast
Flags (4bits) - Specifies properties of a multicast address
Scope (4 bit) - How widely routers can forward the address
Group ID (122 bits) Unique ID of the multicast group

52
Q

What are the scope options of a multicast address?

A 
Interface Local
Link Local
Site Local
Organization Local
Global
53
Q

What is the function of an anycast address

A

Identify routers within a given address scope and send traffic to the nearest router as determined by local routing protocols

54
Q

Version of DHCP for IPv6

A

DHCPv6

55
Q

3 ways to assign an IPv6 address

A

Manual Allocation
Self-Allocation (Like APIPA)
Dynamic Allocation (DHCPv6)

56
Q

Stateless Address Autoconfiguration

A

Process started on Windows boot that assigns each interface a link-local unicast address

57
Q

Tunneling

A

Process by which a system encapsulates an IPv6 datagram within an IPv4 packet. Allows for running IPv6 in IPv4 environments

58
Q

6to4

A

Allows for formating IPv4 addresses in IPv6 addresses

59
Q

ISATAP

A

Intra-site automatic tunnel addressing protocol - automatic tunneling protocol used by Windows workstations. Emulates IPv6 link using an IPv4 network

Server 2012 MOAC 70-410 (18 decks)

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