UDP vs TCP

Question 1

What are the characteristics of UDP? (four answers)

Answer 1

• Data is reconstructed in the order it was received.
• Any segments lost are not sent again
• There is no session establishment
• The sending device is not informed about resource availability

Question 2

What does UDP have fewer of that allows it to be transmitted faster?

Answer 2

Header fields

Question 3

What are the basic operations TCP provides? (three answers)

Answer 3

• Number, track, retransmit, and order data segments.
• Acknowledge data received
• Send data at an effective rate

Question 4

When should you use UDP and when should you use TCP?

Answer 4

You use UDP when the application requires speed but can suffer data loss. You use TCP when you need a reliable connection to the remote computer.

Question 5

What are UDPs segment names?

Answer 5

Datagrams

Question 6

What does TCP have to do that UDP doesn’t

Answer 6

Establish a connection

Question 7

What is the range of the well known port?

Answer 7

0-1023

Question 8

What is an IP address and a port number called when they are together?

Answer 8

a socket (192.168.0.18:80)

Question 9

What are two sockets together called?

Answer 9

a socket pair

Question 10

What are the functions of the three-way handshakes?

Answer 10

• Established the destination device is present on the network
• Certifies the destination devices has an active service and is accepting requests.

Question 11

What is the range of the registered ports?

Answer 11

1024 - 49151

Question 12

What is the range of the private or dynamic ports?

Answer 12

49152 - 65536

Question 13

What can unexplained TCP connections be?

Answer 13

a major security risk

Question 14

What CMD command shows what connections are active on a computer?

Answer 14

Netstat

Question 15

What does the transport layer specify?

Answer 15

Protocols on how to transfer messages and managing reliability.