ITCC 1401 Chapter 7

Which two applications use UDP as the transport layer protocol? (Choose two.)

1. DNS queries 2. DHCP

Which three fields are used in a UDP segment header? (Choose three.)

1. Length 2. Source Port 3.Checksum

Which number or set of numbers represents a socket?

192.168.1.1:80

session establishment step 3

ACK

Which entities are involved in a temporary communication that is established by the transport layer?

Applications

Open the PT activity. Perform the tasks in the activity instructions and then answer the question. What is the application layer service being requested from Server0 by PC0?

HTTPS

session establishment step 1

SYN

session establishment step 2

SYN + ACK

Refer to the exhibit. What step in a TCP session does this capture represent?

Session termination

Refer to the exhibit. What does the value of the window size specify?

The amount of data that can be sent before an acknowledgment is required.

Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?

The client randomly selects a source port number.

When a client connects to an HTTP server by the use of a randomly generated source port number, what destination port number will the HTTP server use when building a response?

The original source port number that was randomly generated by the client

What happens if part of an FTP message is not delivered to the destination?

The part of the FTP message that was lost is re-sent.

What is the purpose of using a source port number in a TCP communication?

To keep track of multiple conversations between devices

What is an advantage of UDP over TCP?

UDP communication requires less overhead.