IPv6 Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

IPv6Rd is stateful

A

False

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2
Q

NAT 64 stateless does not assist in maintaining IPv4

A

True

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3
Q

NAT64 stateful maps 1:1 and maintains end-to-end communication

A

False, it maps Nv:1v4, false there is no end-to-end communication maintenance

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4
Q

NAT64 implies the use of DNS

A

True

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5
Q

In 6in4 DNS64 translates an A record into an AAAA record so that an IPv4-only host can access an IPv6-only network

A

False, DNS64 applies to NAT64, its operation is correct but the goal is to provide access from v6-only clients to v4-only servers

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6
Q

NAT64 uses the 2002::/16 prefix

A

False, 6to4 uses this range

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7
Q

6in4 encapsulates IPv6 over IPv4 and uses protocol number 41

A

True

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8
Q

6to4 is indicated for v6 clients to access v4 networks

A

False, it is a router-to-router protocol. The address is formed by the global address prefix 2002:wwxx:yyzz::/48, where wwxx:yyzz is the host’s public IPv4 address converted to hexadecimal

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9
Q

6to4 has the IPv4 relay/remote router address embedded in the IPv6 address

A

True

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10
Q

The /64 prefix is used by NAT64

A

False, a /96 + 32 (IPv4)

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11
Q

In nat64, the core and access of the operator can be IPv4 only

A

False, they must be IPv6 only and the cgnat must occur at the edge

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12
Q

___ - translation - Embeds only part of the remote IPv4 peer within IPv6 ___ - Tunneling - Tunnels IPv6 over IPv4, protocol 41, should not be used with isis

A

6rd, 6in4

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13
Q

___ - translation - Embeds the entire remote IPv4 peer within IPv6

A

6to4

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14
Q

What is the size in Bytes of the GRE overhead?

A

24 bytes

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15
Q

Which tunneling technique is used by the command Tunnel mode IPv6ip

A

6in4

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16
Q

Explain the difference between 6in4 and 6to4

A

6in4 is tunneling = IPv6 over IPv4 6to4 is translation = IPv4 gateway embedded within the IPv6 only destination address, so the v6 > v4 gateway knows which IPv4 gateway responds for an existing IPv6 range. Uses special range 2002/16 Concatenates 32-bit IPv4 forming unique /48 networks per existing IPv4 address

17
Q

What is the overhead of 6in4

A

20 bytes of the IPv4 header