chapter 7 CCNA routing and switching V5.0 / 2013-2014

chapter 7 routing & switching V5.0


What is the complete range of TCP and UDP well-known ports?
  • 0 to 1023

A host device sends a data packet to a web server via the HTTP protocol. What is used by the transport layer to pass the data stream to the proper application on the server?
  • destination port number

Fill in the blank using a number. A total of ____ messages are exchanged during the TCP session termination process between the client and the server.
  • four

Which scenario describes a function provided by the transport layer?
A student has two web browser windows open in order to access two web sites.
  • The transport layer ensures the correct web page is delivered to the correct browser window

Which factor determines TCP window size?
  • the amount of data the destination can process at one time

What happens if the first packet of a TFTP transfer is lost?
  • The TFTP application will retry the request if a reply is not received.

What is a beneficial feature of the UDP transport protocol?
  • fewer delays in transmission

Compared to UDP, what factor causes additional network overhead for TCP communication?
  • network traffic that is caused by retransmissions

What is a socket?
  • the combination of a source IP address and port number or a destination IP address and port number

Which two TCP header fields are used to confirm receipt of data?
  • Sequence number
  • Acknowledgement number

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

During a TCP session, the ____ field is used by the client to request communication with the server
  • SYN, SYN-ACK, and ACK
     

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

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 technician wishes to use TFTP to transfer a large file from a file server to a remote router. Which statement is correct about this scenario?
  • The file is segmented and then reassembled in the correct order at the destination, if necessary, by the upper-layer protocol..

What does a client do when it has UDP datagrams to send?
  • It just sends the datagrams

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

What does a client application select for a TCP or UDP source port number?
  • a random value in the range of the registered ports

Which transport layer feature is used to guarantee session establishment?
  • TCP 3-way handshake

Match the characteristic to the protocol category
TCP:
  • window size
  • 3-way handshake
UDP:
  • best for VoIP
  • connectionless
Both UPD and TCP:
  • port number
  • checksum

Match each application to its connectionless or connection-oriented protocol

TCP:
  • HTTP
  • FTP
  • Telnet
UDP:
  • DHCP
  • TFTP

Refers to the exhibit. Consider a datagram that originates on the PC and that is destined for the webserver.
Source IP address
  • 192.168.1.2
Destination IP address
  • 192.168.2.2
Source port number
  • 2578
Destination port number
  • 80