Module 14 Quiz

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

✓ ACK ✓ SYN

Which two operations are provided by TCP but not by UDP? (Choose two.)

✓ Retransmitting any unacknowledged data ✓ Acknowledging received data

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)

✓ VoIP ✓ DNS

What is the complete range of TCP and UDP well-known ports?

0 to 1023

How does a networked server manage requests from multiple clients for different services?

Each request has a combination of source and destination port numbers, coming from a unique IP address.

What TCP mechanism is used to enhance performance by allowing a device to continuously send a steady stream of segments as long as the device is also receiving necessary acknowledgements?

Sliding window

Which number or set of numbers represents a socket?

192.168.1.1:80

What type of applications are best suited for using UDP?

Applications that are sensitive to delay

Which transport layer feature is used to establish a connection-oriented session?

TCP 3-way handshake

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

What is a socket?

The combination of a source IP address and port number or a destination IP address and port number

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

The part of the FTP message that was lost is resent.

Network congestion has resulted in the source learning of the loss of TCP segments that were sent to the destination. What is one way that the TCP protocol addresses this?

The source decreases the amount of data that it transmits before it receives an acknowledgement from the destination.

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

To keep track of multiple conversations between devices

What is a responsibility of transport layer protocols?

Tracking individual conversations