Cisco-Training.net
1
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 well-known port numbers to identify the source ports.
**A termination request has been sent to 192.135.250.10.
**Communication with 64.100.173.42 is using HTTP Secure.
The local computer is accepting HTTP requests.
192.168.1.101:1042 is performing the three-way handshake with
128.107.229.50:80.
2 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
3 Which information is found in both the TCP and UDP header information?
sequencing
flow control
acknowledgments
**source and destination
4 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
5
Cisco-Training.net
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
6
Cisco-Training.net
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
7
Refer to the exhibit. The initial TCP exchange of data between two hosts is
shown in the exhibit. Assuming an initial sequence number of 0, what sequence
number will be included in Acknowledgment 2 if Segment 6 is lost?
2
3
6
1850
**3431
3475
8 Why is flow control used for TCP