Network Layering and Packets

What does network layering mean in networking?

• Breaking up the sending of messages into separate components and activities

• The physical connection of cables in a network

• The process of encrypting network communications

• Connecting multiple devices to the internet

Which protocol stack is used when connecting a device to the internet?

• UDP/IP

• TCP/IP

• SMTP/POP3

• HTTP/FTP

What is the role of the Application layer in network layering?

• Routes the packets across the network

• Determines how a message is transmitted over a network

• Encodes/decodes the message into a form that is understood by the sender and the recipient

• Enables the physical transfer of packets between nodes on a network

What does the Transport layer do?

• Facilitates the transmission of a message across a network

• Breaks down the message into small pieces called packets

• Encodes the message into a form that is understood by the sender and recipient

• Adds the sender's and recipient's IP addresses

What is the maximum value for each set of digits in an IPv4 address?

• 1024

• 500

• 255

• 100

What significant problem did IPv6 address?

• Speed of internet connections

• Encryption of data

• Running out of IP addresses

• Data packet size

What is packet switching?

• A method of encrypting data packets

• A method of communication where a message is broken down into small pieces sent separately

• A protocol for wireless communication

• A type of network topology

What does the header of a packet include?

• Only the recipient's IP address

• The sender's and recipient's IP addresses, packet number, total number of packets, and protocol details

• The entire message to be sent

• Only the sender's IP address

How does packet switching enhance fault tolerance in a network?

• By increasing the speed of transmission

• By sending all packets along the same route

• By encrypting each packet differently

• By allowing packets to be sent via different routes if a connection fails

What allows network standards to be adapted over time?

• The use of the same application layer by all software packages

• The unchanging nature of the transport, internet, and link layers

• Layering enabling standards to be developed and adapted to new hardware and software

• The requirement for all networks to use TCP/IP