IPv4 Header Flashcards
A router will drop a packet with a TTL of ___
0
A value of ___ in the IP header “Version” field indicates IP version 4.
4 (binary 0100)
A value of ___ in the IP header “Version” field indicates IP version 6.
6 (binary 0110)
IPv4 header “Flags” field:
Bit: ___ = Reserved, always set to 0
0
IPv4 header “Flags” field:
Bit ___ = DF bit
1
IPv4 header “Flags” field:
Bit ___ = MF bit
2
IPv4 header “Flags” field:
What does “DF bit” stand for?
Don’t Fragment bit
IPv4 header “Flags” field:
What does “MF bit” stand for?
More Fragments bit
IPv4 header “Protocol” field:
Value of 1 = ___
ICMP
IPv4 header “Protocol” field:
Value of 17 = ___
UDP
IPv4 header “Protocol” field:
Value of 6 = ___
TCP
IPv4 header “Protocol” field:
Value of 89 = ___
OSPF
IPv4 header “Protocol” field:
Value of ___ = ICMP
1
IPv4 header “Protocol” field:
Value of ___ = OSPF
89
IPv4 header “Protocol” field:
Value of ___ = TCP
6
IPv4 header “Protocol” field:
Value of ___ = UDP
17
IPv4 header: All fragments of the same packet will have the same value in the ___ field
Identification
IPv4 header: the “Checksum” field is ___ bits in length.
16
IPv4 header: the “Destination IP Address” field is ___ bits in length.
32
IPv4 header: the “DSCP” field is ___ bits in length.
6
IPv4 header: the “ECN” field is ___ bits in length.
2
IPv4 header: the “Flags” field is ___ bits in length.
3
IPv4 header: the “Fragment Offset” field is ___ bits in length.
13
IPv4 header: the “Identification” field is ___ bits in length.
16
