Quiz 4: Tcp Behavior Analysis In Time Sequence Graph

University:
American Baptist College
Course:
CIT380 | Computer and Network Security
Academic year:

2023
Views:

495

Pages:

3
Author:

RTerbayar

Quiz 4 1. Use the Time-Sequence-Graph (Stevens) plotting tool to see the sequence number against time of segments sent from your computer/laptop to the gaia.cs.umass.edu/ server. Can you identify where the TCP slow start phase starts and ends and where congestion avoidance takes over? Answer: • Congestion avoidance takes over at sequence number 15000++/ datik to 1.4+++ 2. Comment on how the calculated data differs from the ideal TCP behavior learned in the textbook? Answer: • The path traveled by each packet can be different from one another. Because the paths are different, the packet arrivals are not sequential, so the data calculated is different from the ideal TCP behavior. lOMoARcPSD|26370826 lOMoARcPSD|26370826 3. Explain what makes the UDP transport protocol different from TCP? What makes UDP and TCP protocols is that UDP is connectionless and lacks reliability, windowing, and functions to ensure data is received correctly. However, UDP also provides the same functions as TCP, such as data transfer and multiplexing, but it does so with fewer extra bytes in the UDP header. UDP performs UDP multiplexing in the same way as TCP. The only difference is the transport protocol used, which is UDP. An application can open the same port number on one host, but one uses TCP and the other uses UDP-this is unusual, but allowed. If a service supports both TCP and UDP, it uses the same value for TCP and UDP port numbers. UDP has the advantage over TCP of not using sequence and acknowledgement fields. The most obvious advantage of UDP over TCP is the fewer additional bytes. In addition, UDP does not need to wait for reception or store data in memory until it is received. This means that UDP applications are not slowed down by the reception process and memory can be freed up faster. In the table, you can see the functions performed (or not performed) by UDP or TCP. 4. What is the role of Internet Protocol (IP) addresses in computer network communication? The role of IP addresses in computer network communication is as follows, 1. As the identity of the device accessing the network, 2. Identify the network scale used, 3. Can be used to track the whereabouts of devices accessing the network, 4. As a footprint of internet users. GET HOME SIDE GET ISP_SIDE 200 OK HOME_SIDE 200 OK ISP_SIDE lOMoARcPSD|26370826