Packets and Protocols – Student Worksheet (Grade 9)

Match the term with its definition:

• The protocol that lets computers request and send web pages.

• The system that translates website names into IP addresses.

• A unique number that identifies a computer on a network.

• A unique number that identifies a computer on a network.

• Breaks large messages into numbered packets and reassembles them.

• A small piece of data sent across the internet.

• A small piece of data sent across the internet.

• The protocol that lets computers request and send web pages.

• The system that translates website names into IP addresses.

• Breaks large messages into numbered packets and reassembles them.

All data is broken into packets before being sent because:

• it allows for efficient and reliable data transmission over networks.

• it makes the data unreadable to unauthorized users.

• it increases the size of the data being sent.

• it ensures that only one device can use the network at a time.

If one packet doesn’t make it to the destination, what happens?

• The packet is lost and may need to be resent.

• The entire message is delivered anyway.

• The network automatically repairs the packet.

• The destination creates the missing packet.

TCP helps ensure packets are in the right order by:

• using sequence numbers to reorder packets

• assigning random numbers to packets

• sending packets without any order

• using only one path for all packets

Domain names (like google.com) are used instead of IP addresses because:

• they are easier for people to remember than numerical IP addresses.

• they provide faster internet speeds than IP addresses.

• they are more secure than IP addresses.

• they are required for all websites to function.

The “200 OK” in an HTTP response indicates:

• The request was successful and the server returned the requested resource.

• The server could not find the requested resource.

• The server encountered an internal error.

• The request was forbidden by the server.

Which of the following correctly describes the path of a web request from your computer to www.example.com?

• Your computer sends a request, DNS finds the IP address, packets are broken up and sent, the server reassembles and responds.

• Your computer sends a request directly to the server without DNS, and the server responds.

• DNS sends the request to your computer, which then sends it to the server, and the server responds.

• Packets are sent to DNS, which reassembles them and sends them to the server.

If every computer used a different set of rules instead of protocols, what would happen?

• Computers would not be able to communicate effectively.

• Computers would communicate faster.

• All computers would become more secure.

• The internet would work more efficiently.

What is the main purpose of the DNS (Domain Name System) in internet communication?

• To assign MAC addresses to devices.

• To store website content for faster access.

• To encrypt data sent over the internet.

• To translate domain names into IP addresses.

Which protocol is primarily responsible for ensuring reliable delivery of data packets over the internet?

• FTP (File Transfer Protocol)

• DNS (Domain Name System)

• HTTP (Hypertext Transfer Protocol)

• TCP (Transmission Control Protocol)