Course 2

Question 1

version IPV6 header

Answer 1

ip version
0100 v4
0110 v6

Question 2

Traffic class IPV6 header

Answer 2

similar to TOS IPV4

Question 3

Flow label IPV6 header

Answer 3

20 bits, identifies packets belonging to the same flow

for special treatment applied to packets within nodes

uniform random allocation

for hosts and routers not implementing flow label

alll bits in 0

value is not modified by intermediary nodes

ignored at destination

Question 4

payload length IPV6 header

Answer 4

16 bits, fixed IPV6 header (40 BYTES)

payload includes extension headers

Question 5

next header IPV6 header

Answer 5

8 bits, identifies the type of the next header after IPV6

extension header
transport header

except hop by hop header, all extension headers are not processed by intermediary nodes

Question 6

HOP limit IPV6 header

Answer 6

similar to TTL from ipv4

decreased by each node

when it reaches 0, packet is discarded