Now, it's time to check your knowledge. Select the best response, then check your answers, which can be found in the Assessment:

1. A _____ is defined as an IP address and a port.
   1. Window
   2. Socket
   3. Checksum
   4. Sequence
2. ACK 725 means I have received _____ bytes of data and I am ready for more, starting with _____.
   1. 700 and 800
   2. 724 and 725
   3. 725 and 726
   4. 725 and 725
3. The _____ flag informs TCP that data should be sent immediately.
   1. RST
   2. SYN
   3. ACK
   4. PSH
4. If the offset value is 0101, the TCP header length = ___.
   1. 32
   2. 8
   3. 20
   4. 64
5. In a normal connection, ___ will use UDP.
   1. HTTP
   2. SMTP
   3. DHCP
   4. FTP