IP packet structure in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to name the first field of an IP packet header.

Computer Networks

The first field in an IP packet header is called the [1] field.

Drag options to blanks, or click blank then click option'

AChecksum

BVersion

CPayload

DSource Address

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing the Version field with the Checksum or Source Address fields.

The first field in an IP packet header is the Version field, which indicates the IP protocol version.

2fill in blank

medium

Complete the code to identify the field that specifies the total length of the IP packet.

Computer Networks

The field that specifies the total length of the IP packet is called the [1] field.

Drag options to blanks, or click blank then click option'

AIdentification

BTime to Live

CFlags

DTotal Length

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up Total Length with Identification or Flags fields.

The Total Length field specifies the entire size of the IP packet, including header and data.

3fill in blank

hard

Fix the error in naming the field that controls packet fragmentation.

Computer Networks

The [1] field controls fragmentation and reassembly of IP packets.

Drag options to blanks, or click blank then click option'

AFlags

BHeader Checksum

CProtocol

DTime to Live

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing Flags with Time to Live or Protocol fields.

The Flags field contains bits that control fragmentation, such as 'Don't Fragment' and 'More Fragments'.

4fill in blank

hard

Fill both blanks to complete the description of the source and destination addresses in an IP packet.

Computer Networks

The [1] field contains the sender's IP address, and the [2] field contains the receiver's IP address.

Drag options to blanks, or click blank then click option'

ASource Address

BDestination Address

CIdentification

DHeader Length

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up Source and Destination Address fields.

The Source Address field holds the sender's IP, and the Destination Address field holds the receiver's IP.

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension that maps IP header fields to their typical bit sizes, filtering only fields larger than 8 bits.

Computer Networks

ip_header_bits = { [1]: [2] for [3], [4] in fields.items() if [4] > 8 }

Drag options to blanks, or click blank then click option'

Afield

Bsize

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same variable name for both key and value.

Not matching the variable names in the for loop with those in the comprehension.

This comprehension creates a dictionary of IP header fields and their bit sizes, including only those fields larger than 8 bits. The variables field and size represent the key and value from the fields dictionary.