Messer 1.1

Question 1

TCP and UDP are encapsulated by what protocol?

Answer 1

IP

Question 2

What OSI layer do TCP and UDP operate in?

Answer 2

Layer 4. The transport layer

Question 3

What does Multiplexing allow you to do?

Answer 3

Use many different applications at the same time.

Question 4

Which protocol is a connection-oriented protocol? TCP or UDP?

Answer 4

TCP because there has a formal connection setup and close.

Question 5

1.1 Fun fact #01

Answer 5

TCP is also referred to as a “reliable” mode of communication because it can recover from errors and manage out-of-order messages or retransmissions.

Question 6

How does TCP know if data is lost or received out of order?

Answer 6

It numbers the data packets.

Question 7

TCP and UDP acronyms

Answer 7

Transmission Control Protocol

User Datagram Protocol

Question 8

Which protocol is connectionless? TCP or UDP

Answer 8

UDP because there is no formal open or close to the connection

Question 9

1.1 Fun fact #02

Answer 9

UCP is also referred to as an “unreliable” form of delivery because there is no error recovery, reordering of data, or retransmission

Question 10

Which protocol has no flow control so the sender determines the amount of data transmitted?
TCP or UDP

Answer 10

UDP

Question 11

What is a non-ephemeral and an ephemeral port?

Answer 11

Non-ephemeral port is a permanent port.

Ephemeral port is determined in real-time by the clients

Question 12

Non-ephemeral ports range.

Answer 12

0 through 1,023. Usually on a server or service

Question 13

Ephemeral ports range.

Answer 13

1,024 through 65,535. Determined in real-time by the clients

Question 14

TCP and UDP port range.

Answer 14

0 through 65,535.

Question 15

Most servers (services) use which type of port? Ephemeral or non-epemeral

Answer 15

non-ephemeral