ipl-logo

Nt1310 Unit 7

710 Words3 Pages

HTTP & TCP Input & Output In this simple java program, I inputted an HTTP URL for a website, and when the program is run, it returns HTTP data for the specified website. In terms of TCP/IP model, this HTTP request would fit under the application layer, as I am using an interface to exchange data through a network. More specifically, as the data exchange is utilizing the HTTP protocol, and sends the data through port 80. Here, I am using a very simple java TCP server and client. On the left is the server, and on the right is the client. When I type a message and press enter on the server (left side), it is sent (locally) to the TCP client. Much like the HTTP client above, this utilizes the application layer of the TCP/IP …show more content…

In this capture, a 3-way handshake is established, then an HTTP get request is made, the server sends the html data to the client, and finally, a 4-way handshake is made to terminate the the TCP request. Before the web browser can connect to the website, it must first establish a connection through TCP. A 3-step exchange occurs to initiate this connection, which is known as a 3-way handshake. The client sends a SYNchronize packet - which you can see in the screenshot – to the server. In response, the server sends SYN-ACK (Synchronize Acknowledgement) to the web browser client. Finally, the client sends a ACK packet back to the server, acknowledging the connection has been established. This sets up a full duplex connection between the client and server, meaning they can both send and receive data from each other simultaneously. After the 3-way handshake in the screenshot, an HTTP get request is made by the web browser for the website; the server ACKnowledges this and sends the website data to the web browser. For ending the connection, a 4-way handshake is used. In the screenshot, the client first ACKnowledges that it has successfully received the HTTP data, and then the sever sends out a FIN packet, which the client ACKnowledges, and then the client sends out a FIN packet, which the sever then ACKnowleges, and then the connection times out, thus ending the data exchange …show more content…

This division can be represented in either dot decimal notation or CIDR notation. A dot decimal notation subnet mask would look like this: 255.255.255.0. That same subnet mask would look like IP Address/24 in CIDR notation. Essentially, a subnet mask is a number that tells a device how many other devices it can directly connect to (through a switch) within a network or subnetwork without having to go through a default gateway (aka a router). In a network such as this one, the circled subnet at the bottom left is given a subnet mask of /24, or 255.255.255.0. This means that within its subnetwork (the switch it is connected to) it would be able to connect to any other host connected to its local switch, as the subnet mask means it could connect to any host with the IP address 10.10.1.x, meaning that it will NOT go through the lab-a router if the IP is within that range. If we change the subnet mask of the circled subnet to /16, or 255.255.0.0, this would effectively disable the functionality of the host. This is because now the host will attempt to connect to all the hosts with 10.10.x.x within its own subnet and avoid using the lab-a router. This will break the connectivity of the circled host because all the other hosts that it could connect to are defined as 10.10.2.x, and the subnet mask of /16 means it will not go through the default gateway/router in order to access these

Show More
Related
321 Words | 2 Pages

No 1.1 How many users does the client’s system have (e.g., people who log on)? _________ If more than 40, check Yes box. 1.2 Does the client have a wide area network (WAN) or a mainframe (i.e., AS/400, RISC6000)?

Read More
465 Words | 2 Pages

Adaptive Location Data Buffering provides two different methods to occasionally confirm an open end-to-end connection with the server. If the IP address of the device is publically addressable, the server can occasionally send “alive” messages via single UDP packets to the phone. If, for security or capacity reasons, the cellular provider does not allow publically addressable IPs, the Adaptive Location Data Buffering module occasionally opens a TCP connection from the phone to the server to determine if there is a successful “alive” response from the server.

Read More
298 Words | 2 Pages

1. Traffic control: As the data communication is the most energy-consuming part of the wireless sensor networks by decreasing the amount of traffic, energy can be saved. To distribute traffic effectively from a central node to other nodes, investigations are still needed in the network. 2. Preserve the traffic load balancing:

Read More
1427 Words | 6 Pages

This block performs the flow table (hash table) lookup, updates the per port packet and byte counters and reads the corresponding actions. If the packet header does not match the corresponding hash table entries, then it is considered as a table miss and the packet is dropped. First, the structure of hash table and hashing function are described and then the functionality of exact match is described. The hash table is constructed using 512 deep and 64 bit wide block RAM (BRAM).

Read More
555 Words | 3 Pages

Assignment 3 ICT 4800 Network Comm and the Internet Instructor: Prof. Steven Starliper Submitted by Medha Banda 872987212 June 24, 2015 IPV6? The IP addresses are used by the internet to identify all the devices that are connected to it. Each machine has a unique address to be identified.

Read More
446 Words | 2 Pages

. : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.201.1

Read More
664 Words | 3 Pages

1. Viruses Can destroy all of the data and erase all of the file or misused by the attacker. Have the anti-virus downloaded in your computer and make sure your computer is completely updated. 2. Phishing Attacker will be able to get the private information of the person and will gain access on computer Be able to recognize the fake emails from the attacker and avoid opening them up.

Read More
502 Words | 3 Pages

There are 2 modules:  User Module Client application consist of the application on the user side. This application has the login page to register for new client. Th application communication with the server using internet connection. The application acts as a guide for direct him to his parking slot. After login in the application the user need to enter a field of its duration time which is send to the server.

Read More
436 Words | 2 Pages

Components Computers have one or a lot of big or small R-A-M chips inside. RAM chips are a random access memory chip inside, the computer uses it to store information that will be used anytime or used to store something like the copy clipboard(The copy clipboard is the thing that stores what you copy to paste later) to delete/change later. There is also a spinning or solid state hard drive that uses DVD like disks that stores information like your video games, pictures, or other things. A CPU is the thing that your computer uses to do all the processing work, like our brain but not like it. CPU stands central-processing-unit.

Read More
933 Words | 4 Pages

This firewall rejects and accepts data by the set of rules. What the rules are called is ACL this gives the text to the packet filter so it know what data can go through or what data can’t go through. The good thing about this type of firewall is that you can personalise so it can work on different protocols. Another good thing about this type of firewall is that it can work at a fast pace for a long time because they are not application-dependant and they don’t have to do extra processing to the data packets.

Read More
503 Words | 3 Pages

Fundamentals of Networking IT204-1701A-03 Unit 1 Discussion Board 2 Andrew LeLusche Professor Gregory Roby Colorado Technical University 1/6/2017 Fundamentals of Networking IT204-1701A-03 Unit 1 Discussion Board 2 In order to choose the correct network for your needs, it is important to first understand the differences, advantages, and disadvantages between a peer to peer network and a client/server network. Whether you are a family home, a mom and pop shop, a data center or large corporation- there is a network for your needs. A network is a system of operating machines that allows a user to access an interface suitable for creating and saving documents, access webpages and video/audio content, run administrative programs to serve clients based on whatever business model or service provider you are. First let’s discuss a peer to peer network.

Read More
1743 Words | 7 Pages

A client connects to the proxy server, and then requests a connection, file, or other resource that is available on a different server. The proxy provides the resource either by connecting to the specific server or by serving it from a cache. Sometimes, the proxy may alter the client's request or the server's response for numerous purposes. Routers are the devices that join together the various different networks that together make up the Internet. In a network, routers are sophisticated switched hubs.

Read More
784 Words | 4 Pages

This system was invented in the same years as his other two inventions,in 1989. He also invented the HTTP {hypertext transfer protocal} this system is an application protocal for distributed, collaborative, hypermedia information system. HTTP is the foundation of data communication for the World Wide Web. Hypertext is a structured text that uses logical links {hyperlinks} between codes containing text. HTTP is a protocal to exchange transfer hypertext.

Read More
272 Words | 2 Pages

Leonard Kleinrock was the person who came up with the idea of using packets in the internet instead of circuits. This means it was his idea to break up messages into smaller parts, each with a clearly defined beginning and end. Each of these packets of information is sent separately and the original method is reconstructed by the receiving computer. The packets can travel using different paths, and if one packet is not received correctly, the entire message isn’t lost. This is part of what makes the internet so flexible and reliable.

Read More
618 Words | 3 Pages

1- The electromagnetic spectrum is the range of all type of EM radiation. It also describes the wavelength of light. EM radiation is the radiant energy that is released by a certain electromagnetic processes and a wavelength is the distance between successive crests of a wave. 2- The different between ionising and non-ionising radiation is that ionising radiation carries energy to ionize atoms and has more energy than non-ionising.

Read More

More about Nt1310 Unit 7

Open Document