What is a 'handshake'?

Answer 1

Answer--A 'hand shake' is a form of greeting someone. Men for centuries have shook hands and sometimes business deals were just a simple hand shake and no contract involved (that was many years ago.) Often men could tell from the hand shake they received if the man was honest, weak, or a good businessman. Men usually never shook hands with women (because it was more masculine that feminine.) Up until the 1960's if a man was introduced to a woman she would be acknowledged by a nod and a smile and 'Very nice to meet you.' In earlier years men of stature would gently hold the woman's hand he was introduced to and kiss the top of her hand. Today many women have careers and slid into 'the man's world' so now shaking hands with a woman is acceptable.

In I.T.:

A hand shake is a term used when creating a virtual connection between hosts.

An example of this is with the TCP protocol's 3-way handshake in which a connection must be established for communication...

1. The client sends a SYN (Sync) packet to the remote host when it needs to negotiate a connection, which includes an initial sequence number. This indicates to the other computer that the client wants to negotiate a connection.

2. When the remote host receives the packet, it records the sequence number and replies with an acknowledgement (ACK), which is the initial sequence number which the client sent +1 (a way of verifying receipt by saying, 'i received your sequence number and i am expecting the same number +1 next'). It also sends its own sequence number so the client can do the same in the next step...

3. The client receives the remote hosts own sequence number +1 in the ACK packet which confirms it is communicating with the desired computer and responds with its own ACK of the remote hosts sequence number +1. This confirms the connection and the hosts can now begin communication.

Every packet sent afterwards carries on using sequencing numbers so each end knows where the data came from and in what order it is to be assembled.

Answer 2

A gesture where two people clasp each others' hands. They do not need to shake anything.

Some people think that a handshake is a Freemasonic weapon for taking over the world.

Answer 3

HANDSHAKE is a form of greeting peoples . In networking Handshake means giving acknowledgement after receiving a packet . After handshaking the connection is established.