Pearson 1CP2 - 4.1 - Packets and Routers

What is data broken down into, so it can be transferred across the internet?

• Chunks

• Fragments

• Segments

• Packets

Answer explanation

Data is broken down into packets to be transferred across the internet efficiently.

What are the devices on the internet that ensure each packet reaches its desired destination?

• Switches

• Modems

• Firewalls

• Routers

Answer explanation

Routers are the devices on the internet that ensure each packet reaches its desired destination.

What is the term given to the process of transferring a packet between a network of routers until it reaches its destination?

• Packet Switching

• Packet Forwarding

• Packet Bridging

• Packet Moving

Answer explanation

Packet Switching is the term used for the process of transferring a packet between a network of routers until it reaches its destination.

What piece of information pertaining to the recipient is include within a packet?

• IP address
• Subnet mask
• MAC address
• Domain name

In which part of a packet can you find:

Sender IP address

Recipient IP address

Sequence number of the packet

Total number of packets in the sequence

Checksum

• Attachment
• Footer
• Body
• Header

Where do you find the recipient IP address of a packet?

• Source IP address field of the packet header
• Destination IP address field of the packet header
• Payload of the packet
• Ethernet frame header

Where do you find the sender address in an IP packet?

• Destination IP Address field of the IP header
• Payload data of the IP packet
• Source IP Address field of the IP header
• Ethernet frame header

Where do you find the sequence number of a packet?

• IP header
• Ethernet frame
• Application layer
• IP footer

Where in each packet do you find the total number of packets sent in a sequence?

• In the footer of each packet, typically in the 'End Packet' field.
• In the metadata of each packet, typically in the 'Timestamp' field.
• In the header of each packet.

• In the body of each packet, typically in the 'Data' field.

Where do you find the checksum of an internet packet?

• In the header section of the packet, specifically in the checksum field.
• At the end of the packet
• In the payload section of the packet
• In the source IP address field