IP Header

Question 1

IPv4 packet Structure

Answer 1

Version
IHL
(DSCP, ECN)
TL
ID
Flags
Frag offset
TTL
Protocol
Header Checksum
Source addr
Dest addr
Options
Padding

Question 2

IP Version header size

Answer 2

4 bits

Question 3

IHL size

Answer 3

4 bits

Question 4

TL size

Answer 4

16 bits

Question 5

TTL size

Answer 5

8 bits

Question 6

IP header Protocol size

Answer 6

8 bits

Question 7

Header checksum size

Answer 7

16 bits

Question 8

Options size

Answer 8

0 - 320 bits

Question 9

Flags size

Answer 9

3 bits

Question 10

Fragment offset size

Answer 10

13 bits

Question 11

ID size

Answer 11

16 bits

Question 12

Minimum IPv4 header length

Answer 12

20 bytes

Question 13

Maximum IPv4 header size

Answer 13

60 bytes

Question 14

IHL min, max values

Answer 14

5, 15

Question 15

TL min, max values

Answer 15

20
65,535

Question 16

DSCP size

Answer 16

6 bits

Question 17

ECN size

Answer 17

2 bits

Question 18

Protocol values

Answer 18

1 ICMP
6 TCP
17 UDP
89 OSPF