1- 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 multiple hosts
2- 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
3- Which event occurs during the transport layer three-way handshake?
- The two applications exchange data.
- TCP initializes the sequence numbers for the
sessions.
- UDP establishes the maximum number of bytes to be sent.
- The server acknowledges the bytes of data received from the client.
4- 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
5- What mechanism is used by TCP to provide flow control as segments
travel from source to destination?
- sequence numbers
- session establishment
- window size
- acknowledgments
6-
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
7- What are two features of the User Datagram Protocol (UDP)? (Choose
two.)
- flow control
- low overhead
- connectionless
- connection-oriented
- sequence and acknowledgements
8- Which information is found in both the TCP and UDP header
information?
- sequencing
- flow control
- acknowledgments
- source and destination port
9- Which three features allow TCP to reliably and accurately track the
transmission of data from source to destination? (Choose three.)
- flow control
- urgent pointer
- best effort delivery
- session establishment
- connectionless services
- numbering and sequencing
10-
Refer to the exhibit. Host1 is in the process of setting up a TCP
session with Host2. Host1 has sent a SYN message to begin session
establishment. What happens next?
- Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
- Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
- Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
- Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
- Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
- Host2 sends a segment with the ACK flag = 1,
SYN flag = 1 to Host1.
11-
Refer to the exhibit. What two pieces of information can be determined
from the output that is shown? (Choose two.)
- The local host is using three client
sessions.
- The local host is using web sessions to a
remote server.
- The local host is listening for TCP connections using public
addresses.
- The local host is using well-known port numbers to identify the
source ports.
- The local host is performing the three-way handshake with
192.168.1.101:1037.
12- Which OSI model layer is responsible for regulating the flow of
information from source to destination, reliably and accurately?
- application
- presentation
- session
- transport
- network
13
During a TCP communication session, if the packets arrive to the
destination out of order, what will happen to the original message?
- The packets will not be delivered.
- The packets will be retransmitted from the source.
- The packets will be delivered and reassembled
at the destination.
- The packets will be delivered and not reassembled at the destination.
14- Which is an important characteristic of UDP?
- acknowledgement of data delivery
- minimal delays in data delivery
- high reliability of data delivery
- same order data delivery
15-
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.
16- What is dynamically selected by the source host when forwarding
data?
- destination logical address
- source physical address
- default gateway address
- source port
17- After a web browser makes a request to a web server that is
listening to the standard port, what will be the source port number in the TCP
header of the response from the server?
- 13
- 53
- 80
- 1024
- 1728
18- Which two options represent Layer 4 addressing? (Choose two.)
- identifies the destination network
- identifies source and destination hosts
- identifies the communicating applications
- identifies multiple conversations between the
hosts
- identifies the devices communicating over the local media
19-
Refer to the exhibit. In line 7 of this Wireshark capture, what TCP
operation is being performed?
- session establishment
- segment retransmit
- data transfer
- session disconnect
20- Which transport layer protocol provides low overhead and would be
used for applications which do not require reliable data delivery?
- TCP
- IP
- UDP
- HTTP
- DNS
