OSI Model

Question 1

Wireshark

Answer 1

packet analyzer

Question 2

Encapsulation

Answer 2

The process of putting headers & trailers around some data

Question 3

Protocol Data Unit (PDU)

Answer 3

A single unit of information transmitted in a computer network

Question 4

SYN (Synchronization)

Answer 4

Used to synchronize connection during the three-way handshake

Question 5

ACK (Acknowledgement)

Answer 5

Used during the three-way handshake, but also used to acknowledge the successful receipt of packets

Question 6

FIN (Finished)

Answer 6

Used to tear down the virtual connections created using the three-way handshake and the SYN flag

Question 7

RST (Reset)

Answer 7

Used when a client or server receives a packet that it was not expecting during the current connection

Question 8

PSH (Push)

Answer 8

Used to ensure data is given priority and is processed at the sending or receiving ends

Question 9

URG (Urgent)

Answer 9

Similar to PSH and identifies incoming data as urgent