cisco chapter 9

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

0-1023

when is UDP preferred to TCP?

When an application can tolerate some loss of data during transmission

A PC is downloading a big file, the window size is 1000 and the server is using 100-byte segments how many segments will they send before it requires acknowledgement from the PC?

10

Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?

ACK

Which of the two flags in the TCP header are used in the 3 way handshake?

ACK SYN

Which two characteristics are associated with UDP

Destination devices receive traffic with minimal delay received data is unacknowledged

Which three application layer protocols use TCP?

SMTP FTP HTTP

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 a part of an FTP message is not delivered to the destination?

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

why does HTTP use TCP as the transport layer protocol?

because it requires reliable delivery

What type of information is included in the transport header?

destination and source port numbers

What does a client do when it has UDP datagrams to send?

it just sends them

What happens if the first packet of a TFTP transfer is lost?

it will retry the request if a reply is not received

how does a host device make up for video data that is lost?

momentary disruption

A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?

multiplexing

What is a characteristic of UDP

reassembles the received datagrams in the order they were received

what kind of port must be requested from IANA in order to be used with a specific application?

registered port

What is used by TCP to reassemble and reorder segments?

sequence numbers

Which factor determines TCP window size?

the amount of data the destination can process at one time

What does the acknowledgement number represent?

the next byte that the destination expects to receive

What does TCP do if it detects network congestion?

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 opened simultaneously on a server, one for each active server application