Networking study Guide
What is a characteristic of UDP?
UDP reassembles the received datagrams in the order they were received?
What information is used by TCP to reassemble and reorder received segments?
sequence numbers
Which protocol or service uses UDP for client-to-server communication and TCP for server-to-server communication?
DNS
What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?
destination and source port numbers
Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?
ACK
How are port numbers used in the TCP/IP encapsulation process?
If multiple conversations occur that are using the same service, the source port number is used to track the separate conversations?
What does a client do when it has UDP datagrams to send?
It just sends the datagrams
What kind of port must be requested from IANA in order to be used with a specific application?
registered port
Which factor determines TCP window size?
the amount of data the destination can process at one time
What is a socket?
the combination of a source IP address and port number or a destination IP address and port number
What is the complete range of TCP and UDP well-known ports?
0 to 1023
Which two characteristics are associated with UDP sessions? (Choose two.)
1.) Destination devices receive traffic with minimal delay 2.) Received data is unacknowledged?
Which three fields are used in a UDP segment header? (Choose three.)
1.) Length 2.) source Port 3.) Checksum
Which three application layer protocols use TCP? (Choose three.)
1.) SMTP 2.) FTP 3.) HTTP
Which three statements characterize UDP? (Choose three.)
1.) UDP provides a basic connectionless transport layer functions 2.) UDP relies on application layer protocols for error detection 3.) UDP is a low-overhead protocol that does not provide sequencing or flow control mechanisms
Which two types of applications are best suited for UDP? (Choose two.)
1.) applications that handle reliability themselves 2.) applications that can tolerate some data loss, but require little or no delay
What are two roles of the transport layer in data communication on a network? (Choose two.)
1.) identifying the proper application for each communication stream 2.) tracking the individual communication between applications on the source and destination hosts
Which two fields are included in the TCP header but not in the UDP header? (Choose two.)
1.) window 2.) sequence number
A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?
10 segments
A host device is receiving live streaming video. How does the device account for video data that is lost during transmission?
The device will continue receiving the streaming video, but there may be a momentary disruption
What does TCP do if the sending source detects network congestion on the path to the destination?
The source will decrease the amount of data that it sends before it must receive acknowledgements from the destination?
What is a characteristic of a TCP server process?
There can be many ports open simultaneously on a server, one for each active server application?
Why does HTTP use TCP as the transport layer protocol?
because HTTP requires reliable delivery
Which field in the TCP header indicates the status of the three-way handshake process?
control bits
During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
the next byte that the destination expects to receive
