CCNA Exploration 1: Network
Fundamentals – Chapter 4 Exam
01.
Based on the transport layer header shown in the diagram, which of the following
statements describe the established session? (Choose two.)
This is a UDP header.
This contains a Telnet request.
This contains a TFTP data transfer.
The return packet from this remote host will have an Acknowledgement Number
of 43693.
This is a TCP header.
02. With TCP/IP data encapsulation, which range of port numbers identifies all
well-known applications?
0 to 255
256 to 1022
0 to 1023
1024 to 2047
49153 to 65535
03. Why are port numbers included in the TCP header of a segment?
to indicate the correct router interface that should be used to forward a segment
to identify which switch ports should receive or forward the segment
to determine which Layer 3 protocol should be used to encapsulate the data
to enable a receiving host to forward the data to the appropriate application
to allow the receiving host to assemble the packet in the proper order
04. Which OSI model layer is responsible for regulating the flow of information
from source to destination, reliably and accurately?
application
presentation
session
transport
network
05.
Refer to the
exhibit. Host A is using FTP to download a large file from Server 1. During the
download process, Server 1 does not receive an acknowledgment from Host A for
several bytes of transferred data. What action will Server 1 take as a result?
create a Layer 1 jam signal
reach a timeout and resend the data that needs to be acknowledged
send a RESET bit to the host
change the window size in the Layer 4 header
06. Why is flow control used for TCP data transfer?
to synchronize equipment speed for sent data
to synchronize and order sequence numbers so data is sent in complete numerical
order
to prevent the receiver from being overwhelmed by incoming data
to synchronize window size on the server
to simplify data transfer to m