Introduction to IP(Comptia Objective 2.1)

Question 1

What are the the two types of IP data?

Answer 1

• TCP and UDP.
• TCP is most common and is connection orientated meaning there is a formal process to setup and close a connection( handshake) . There has to be an acknowlegement of data being sent

Question 2

TCP and UDP are encapsulated inside of what?

Answer 2

• IP Protocol.

- Two ways to move data from place to place.

Question 3

What is the term that describes using many applications at the same time?

Answer 3

• Multiplexing. Specifically of both TCP and UDP.

Question 4

TCP differs from UDP data in that it has what form of delivery?

Answer 4

• ” Reliable Delivery”
• Has recovery from errors
• Can manage out of order messages or retransmissions.

Question 5

What is UDP?

Answer 5

• User Datagram Protocol
• Connectionless. No formal open or close to the connection.
• Is considered “ Unreliable” in that it doesn’t confirm data was received on the other side. No acknowledgement given.
• No error recovery
• No reordering of data or retransmissions.
• No Flow control sender determines the amount of data transmitted.

Question 6

What is an Ephemeral port?

Answer 6

• One that is temporarily used.
• These ports range from 1024 through 65,535
• Determined in real time by the client.

Question 7

What is a non ephemeral port?

Answer 7

• Permanent port numbers that don’t change
• Range from 0 through 1023.
• Usually on a server or service.

Question 8

TCP and UDP ports can be any number from?

Answer 8

• 0 to 65,535

Question 9

Port numbers are for communication and not for?

Answer 9

• Security

Question 10

What do Service Port numbers need to be?

Answer 10

• They need to be “well known”

Question 11

Most servers use what kind of ports?

Answer 11

• Non ephemeral ports( Permanent well known)

Ranging from 0 to 1023