Data Packets and Encryption Flashcards
What are Data Packets?
Data packets in networking is a small segment of a larger message. Data sent over computer networks, such as the internet, is divided into packets. These are used to send data across the internet.
What is the Packet Number?
This number is used if the data reaches the destination out of sequence, the data can be reconstructed in the correct order.
What is the Destination IP address?
The IP address of the receiving device.
What is the Source IP address?
The IP address of the sending device.
What does Protocol do?
Specifies how the data should be treated and handled.
What is the Payload?
The actual data that needs to be transferred.
What is the Error Check?
Checks for errors in the data, and will automatically correct them if possible.
What is the End of Packet?
Signals that this is the end of the packet, so that the packet may be processed by the receiving device.
What is Circuit Switching?
Method of transferring data, where an initial connection is established for the transmission of all packets.
What is Packet Switching?
Method of transferring data, where each packet finds its own optimal route to its destination.
Advantages and Disadvantages of Circuit Switching.
Advantages:
Decreases the delay the user experiences.
Packets delivered in correct order.
Steady bandwidth during calls.
Disadvantages:
Great for only voice communication
Doesn’t use resources efficiently.
Higher cost.
Advantages and Disadvantages of Packet Switching.
Advantages:
More Efficient than Circuit Switching.
Able to find destination without dedicated channel.
Reduce loss of packets as you can resend.
Disadvantages:
Can lose data packets during high-traffic times.
What is Asymmetric Encryption?
This is the process of using public key from a public/private key pair to encrypt plaintext, and then using the corresponding private key to decrypt the ciphertext.
What is Symmetric Encryption?
This method of encryption only used one key to encrypt and decrypt.
