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This article gives the concepts and examples of computer networks, introduces the working principles of computer networks, and gives common types of computer networks. In addition, network security issues are very important, and the article also provides measures to improve network security.

In this paper a computer network is defined to be a set of autonomous, independent computer systems, interconnected so as to permit interactive resource sharing between any pair of systems. An overview of the need for a computer network, the requirements of a computer communication system, a description of the properties of the communication system chosen, and the potential uses of such a network are described in this paper.

The goal of the computer network is for each computer to make every local resource available to any computer in the net in such a way that any program available to local users can be used remotely without degradation. That is, any program should be able to call on the resources of other computers much as it would call a subroutine. The resources which can be shared in this way include software and data, as well as hardware. Within a local community, time-sharing systems already permit the sharing of software resources. An effective network would eliminate the size and distance limitations on such communities. Currently, each computer center in the country is forced to recreate all of the software and data files it wishes to utilize. In many cases this involves complete reprogramming of software or reformatting the data files. This duplication is extremely costly and has led to considerable pressure for both very restrictive language standards and the use of identical hardware systems. With a successful network, the core problem of sharing resources would be severely reduced, thus eliminating the need for stifling language standards. The basic technology necessary to construct a resource sharing computer network has been available since the advent of time-sharing. For example, a time-sharing system makes all its resources available to a number of users at remote consoles. By splicing two systems together as remote users of each other and permitting user programs to interact with two consoles (the human user and the remote computer), the basic characteristics of a network connection arc obtained. Such an experiment was made between the TX-2 computer at Lincoln Lab and the Q-32 computer at SDC in 1966 in order to test the philosophy.' Logically, such an interconnection is quite powerful and one can tap all the resource of the other system. Practically, however, the interconnection of pairs of computers with console grade communication service is virtually useless. Firs

ITG Networks provides multi-product technology solution at the new Residence Inn by Marriott on Pittsburgh's North Shore. Wexford, PA April 15, 2010 - Kratsa Properties awarded ITG Networks a multiple product contract to install and support Kratsa's technology solution for the new Residence Inn by Marriott, a 148,500 square foot, extended stay hotel offers luxury suites on Pittsburgh's North Shore, within walking distance to Heinz Field, PNC Park and a variety of bars and restaurants. Adjacent to PNC Park's home plate entrance, on the corner of West General Robinson Street and Mazeroski Way, this 10-story hotel will provide an array of the latest digital amenities. When the hotel opened its doors on April 5th guests had mobility with a business-class, wireless, high-speed Internet access (HSIA) solution throughout the property. This solution provides secure, plug n' play access. Wireless is available throughout 180 suite-style rooms and all common areas. Wired Ethernet is also available in all guest rooms. Each desk is equipped with a convenient pull-through desk hub and 10' Ethernet cable. For added convenience, the hotel lobby offers a large social laptop table with twelve built-in Ethernet and power outlets. With a complete understanding of the Marriott requirements ITG was able to engineer the overall network to use common networking gear for both Voice and Data. Kratsa Properties now has a system that will both cost less to operate and offer the features and functionality the company requires to meet its customer service goals. Summary: This company provides mobility internet throughout a property, and in this case is the Residence Inn Marriott with 180 suites. ITG Network works hand in hand with different companies to integrate the property management system. Nevertheless, ITG is a full service management development company whom helps with the maintenance of the hospitality industry properties

This article explains the company, Ruskus Wireless, which has introduced a powerful Wi-Fi Wall switch, called ZoneFlex 7025, with elevated speeds of 802.11n, available for the United States' and European market. This product can offer hotels with the feature of multiple IP service over a single wireless at a minimal cost per room. According to Douglas Rice, Vice President and Chief Executive Officer of Hotel Technology Next Generation: "the hospitality market sees enormous benefits that an IP-based network brings in delivering a better guest experience, new services that will lead to drive customer loyalty". This type of technology will allow for hotels to integrate their Internet enabled devices to connect to a single wireless network. Eliminating the limitations of Ethernet cables will improve the areas of guest services, and conference rooms enhancing the experience for guests. Multiple hotels do not have the infrastructure to provide the feature of wireless access throughout their facility, considering the current technological revolution; it has become more of a necessity for hotels to provide this option for their guests. This type of Wi-Fi wall switch will help reduce the cost and complications associated with implementing network services. Fundamentally, Wi-Fi is a common amenity that multiple guests request in every level of travel purpose, which many hotels should implement if their benefit will outweigh the cost.

Saudi Arabias national oil company, Aramco, was attacked by a computer virus, Shamoon, and it is suspected that an insider or employee assisted the hackers. The virus spread through the network and infected about 30,000 PC business computers and wiped their hardrives. This is one of the worst attacks against a single business. The hackers who claimed responsibility, The Cutting Sword of Justice, were politically motived. The companies more important documents including plant operating networks were not affected by the virus because they were on a separate and higher security network. Recently, other Middle Eastern natural gas firms with relations to Saudi Arabia have been hit by cyber attacks. Because the Aramco hackers admitted their motives against the Saudi Arabian government income sources, I think that all the cyber attacks may be politically motivated. As a Middle Eastern oil company with relations to Saudi Arabia, this is a major indication to take precautionary measures and increase network security. This attack demonstrates that no matter how much security you have in place, if an insider is willing to assist hackers or provide hackers with necessary information, you are no longer protected. It would seem imperative that employees with this access are chosen carefully or network access is very limited.

AirTight that is the provider of wireless intrusion prevention (WIPS) rated very positively in 2012 Marketscope for its prevention systems. In today's developed Internet based society, wireless networks are getting significant and using universally with the people's demand for convenience. Wireless networks are, of course, more convenience networks than wired networks, but they are obviously less secure. Because of this fact, the wireless networks users need to consider the security vulnerabilities, and take a proactive approach to detecting the vulnerabilities and responding security incidents quickly. This is AirTight who provides the tools called WLAN IPS for the users in order to help them solve these growing concerns. To be specific, AirTight systems provide both on-premise and cloud WIPS and secure WIFI access to detect and classify all wireless device on the network automatically. By doing so, they can forbid unauthorized devices from accessing the network. I feel that sometimes, the companies or people try to overlook the significant risks because of the conveniences. The wireless networks security might be also one of these kinds of risks. Therefore, I think the systems offered by AirTight are helpful for the companies or people to keep their sensitive information safely.

This article explores what hotels can do for their employees using the network. Some hotels used the network to help employees in need during COVID-19, such as helping furloughed workers with access to other jobs, helping employees use this time to learn skills, and so on. Hotels also building a powerful network for employees in order to connect them with the tools they need to succeed, expect can successfully recovery.

Advantages and Risks of Networking Operating Systems NOS help connect people at a much faster and more organized rate than pen and paper- even email. But with this, there are threats that can come with this convenience. It is important to know the precautionary measures to take and when done properly, how with risk, can come reward. But if measures are not taken properly, the reward can be greatly sacrificed by data being stolen, information being taken and destruction of digital property. We learned that the server can communicate a lot of data to individuals at different locations at once and how this becomes a very big advantage and allows for an increase of productivity. There are also more ways to communicate data with technology as the intrAnet. This allows for a company to use their network to communicate messages between their devices. But when the inter-network is mixed with the internet, the security can become compromised.

The article starts off by addressing the most essential desire of the modern traveler, which is well performing WiFi. Based on a study in 2018, 89% of guests decide where to stay based on free reliable WiFi. This makes access to connectivity the top priority hospitality firms should be looking at for their guests. Poor WiFi experiences can lead to negative guests satisfaction which leads to a loss of repeat business and poor guest reviews. Connectivity also plays a crucial role in the operation of the business. As more business applications move to a wireless or cloud base, the need for strong connectivity increases. This allows room for new innovations to enhance the guest experience. A front desk agent can now check someone in on a cell phone rather than a desktop. This enables you to greet the guest at the door and complete a check-in while in route to their room, eliminating the need to wait in the lobby. Another benefit is with the advent of cloud computing, a hotel can reduce their hardware costs by not having to have a LAN at each property. They can run a centralized cloud server that all properties can log into. This also eliminates the need to have dedicated IT staff at each location. A major issue with this though is that IT loses visibility of the local delivery path of the network. This makes it difficult for them to locate and resolve issues that might happen, such as slow WiFi speeds. They are then challenged to develop a network performance monitoring solution that can account for all the apps working off the network, including the guest's, to gain visibility to be able to troubleshoot when issues arise. I think moving to a cloud based system to reduce hardware and labor costs will become standard for large hospitality firms. For brands with thousands of properties, this can be a great way to reduce expenses. There are certainly challenges that go along with this new technology, however I believe the ROI to be greater and I can see these companies m

I can see these companies making the initial investments to perfect this method. You already see it in a majority of software applications moving to a cloud/web based system. This helps to greatly reduce hard drive storage needs and makes the programs accessible from anywhere. In this post-covid environment, remote accessibility has become a necessity.

The author presents the argument that optimum performance of a hotel's wi-fi network is critical to a hote and that the demands of IoT, large conferences and the need to update infrastructure require constant oversight. It is argued that outsourcing the hotel wi-fi network to a managed WiFi provider has many advantages over placing the burden and responsibility on the hotel IT team. In my opinion, the article makes a strong case for engaging a managed WiFi provider. What would have been a useful addition to the article is how hotel's should go about managing and overseeing the provider that they engage.

This article is very specific about the benefits of networking. Gave you some 4 good point of what to do and get some benefits from Networking.

Since few hotel chains can afford a professional staff to monitor the entire computer network and their guests have little tolerance for slow internet services, remote monitoring technology coming out to allow specialists to evaluate every network component and make changes. Reports are provided from the remote monitoring services at regular intervals. Changes made to the configuration and traffic routing will allow the hotel executives to see the many services that are required to run the network at optimal levels. Recommended upgrades can be conducted before the network performance degrades. 

This article is about the wireless networks within hotels today and how there are many hackers that are breaking into the hotels networks. It discusses how hackers target hotel networks more than any other destination in previous years, and that what is even worse is that the hotels that have been hacked didn't have any knowledge of the hacking that has been done for more or less than 160 days. This article also gives insight of some of the possible things to do to prevent hacking from happening.  I feel that this article although it is 3 years dated, is of great importance to most hospitality industry businesses. There is much information that is stored and transported through many networks that can cause a company to loose everything they have worked for if put into the wrong hands. 

Cvent, the world's largest cloud-based provider of event management, venue selection and web survey solutions, operates the number one marketplace for group meeting business in the works and has driven $3.4 billion in meeting spend through the Cvent Supplier Network through the first half of 2012. The strong network provided by Cvent gather the international booking outside of North America and increase 42% meeting volume based on its strong network. Vice President of Sales for the Cvent said the network bring all market participants together and to improve the sourcing process and deliver value for everyone invloved. The value includes more than 200,000 hotels and special event venues worldwide, providing one-stop shopping for meetings buyers and sourcing professionals. The network also extends suppliers' reach to new customers helping hoes maximize their existing sales & marking resources and increasing their opportunities overall. Cvent also developed a platform hotels can use to help hotels develop response templates to provide faster answers to planners, allowing hotels to pre-populate RFPs with basic information and clone responses to common requests. It also proactively guides planners, helping them create better RFPs by, for example, sending a warning prompt when a venue cannot satisfy a request such as number of sleeping rooms.

Having a good network security eliminates viruses and you are less vulnerable to identity theft or malware that can ruin your data. It is good t run regular weekly scans to ensure that your machine is not infected. It is also good to update the anti-virus programs and the operating systems to ensure that you computer is protected against the latest threats. Using a firewall will help to protect against malicious software and prevent people from traveling through your network connection. With router security, by using a strong password protection people won't be able to get access to stealing your data and this will improve security. Using a computer network suite such as Norton or McAfee is a good option because they have a variety of software, including anti-virus, firewall, identity protection and back up features. They all work together to protect your computer from threats.

Sometimes, virus comes from the misoperation of the staffs. A lot of times, when the anti-virus system warns the user of the computer, most people will not spend too much time reading and thinking about the warning. Then they pay make wrong choice so that virus are downloaded to the computer.

this article basically talks about the relationship between travelers who are active on social network and their favorite brands. Also, it shows how social networks, smartphones, and other mobile devices is a critical for travel companies.

The article discusses five issues that hotel operations are facing, and how to decrease these issues in regards to data thieves. The first security issue discussed is "Remote Access", the article states "Many hotel operators and franchisors use remote management applications (RMAs)". This enable easy access to manage multiple locations downloads; conduct sales polls, and other systems within multiple companies. A advices to remote control issues are to change vendor default settings, in which you can create unique user IDs and complex passwords. Another advice is to "Configure the RMA", in which users are only allowed to connect to known MAC/IP. I personally don't think that creating a unique ID or account password may solve this issue, but allowing connection capability to a set IP/MAC is a wise intake. Although being able to just connect to a set MAC, will cause a limit on where and when you connect. The second security issue is "Network Security", many transaction volumes are being exposed, brand recognition as well; and that attract hackers. In order to reduce this problem, it is suggested that companies need to install and maintain a fire wall at all time. I agree with this other suggestion which is to Use outside resources to help identify new security vulnerabilities. This is great, because a company will be able to receive an outside outlook in regards to security. The last three issues that are on this list are: Password Management, Wireless Security, and Incident Response Plan. Overall it's evident that any system that has a password requirement is causing a major attraction towards security thieves. The suggestions within this article are great, but from my observation; many companies will have to put in time to track and monitor their systems. Systems can't allow to be left open without monitoring, and the internet is a lead way to all this, so any system that requires the internet must be monitored, and protected.

Technology enables service. That's the idea, anyway. In the hotel industry, thousands of companies worldwide provide hundreds of software applications to help hotels and hotel companies manage operations to provide better guest service. However, the hospitality industry continues to find itself targeted for damaging data compromise events by hackers. There are some good ways to decrease the attack of hackers. For example, Remote Access, many hotel operators and franchisors use remote management applications (RMAs).  Their ease of use in managing multiple locations makes them ideally suited to disseminate business downloads, conduct sales polls or survey inventory. RMAs are often packaged from vendors with default or blank passwords. Creating unique user IDs and complex passwords can reduce the risk of data compromise and help facilitate compliance with the Payment Card Industry Data Security Standards (PCI DSS). Another example is about Network Security, transaction volume, brand recognition and the potential for sensitive data retention are all factors that make hotels (particularly franchise networks) juicy targets for hackers seeking to exploit insecure networks via the Internet. The hotel can install and maintain a firewall at all times.  Disabling a firewall can put a business at heightened risk of Internet attacks and potential system compromise.

"The Motorola Solutions 2011 Hospitality Market Barometer reveals that 91 percent of hospitality decision makers realize the increasing importance of mobile and wireless technology, while 78 percent recognize the role mobility plays in ensuring a competitive advantage for their business. As a result, hospitality venues are investing in new technology, as well as powerful wireless networks to handle greater data volumes and increasing demands for high-speed access from the customer and mobile workforce. "

The article analyzed why hotels do investment to It in 2011. It concluded three main reasons, which are elevating the guest experience, empowering the mobile worker, and enabling operational efficiency. It's already 2013 now and things can become different. Hotels should invent carefully according to its specific necessary and customers' necessary.

Dear team! I found an article, very old but to me, very actual and interesting about how the Internet Technology is improving and progressing, and the investment bring benefits only. In 2011 , only 4 years ago, we can see that the companies were having a clear plan to improve the communication system. By introducing wireless, tablets, WLANs , to improve network reliability... Today we have it all on hands. We are using all the devices online , wireless and with no problem to access. No cords on the floor, no telegrams ... Internet technologies is a big progress in our century and is developing and growing, by leaving some of us behind. :)

This article tells about the perspectives of Hotspot 2.0, the new standard for public WiFi, in the hotel industry. The WiFi Alliance has been working on designing this new standard which is supposed to be much friendlier to the users while making Wi-Fi usage more akin to cellular. It allows automatic WiFi network detection and eliminates the public Wi-Fi log-ins, providing automatic access to secure Wi-Fi networks using a Passpoint profile stored on a device. For hotel guests, this means they would be able to go from using their mobile devices on their personal mobile networks to the hotel's Wi-Fi without having to re-enter their authentication credentials every time. This feature, in my point of view, would be very useful, especially for the business travelers who value every second of their time. Another major benefit of Hotspot 2.0 is improved security by means of enterprise-grade WPA2 encryption, which makes it safer than open public networks. This also will be appreciated by the travelers who often use hotel's WiFi networks for booking different travel services and insert security sensitive data. However, the cost of implementation of this new standard in the hotels is rather high. Thus, hoteliers do not wish to force its realization until they are sure that there is demand from the customers. The polls show that the guests are still unaware of the benefits of Hotspot 2.0 and don't consider it as a key point while choosing a hotel. Yet some hotels try to be before the competition and become early adopters of this technology. They believe that quality of internet connection, as well as additional options, will be a differentiating point for hotels in the future. However, in my opinion, it would be wise to conduct appropriate research and wait until this technology will be close to becoming the industry standard before making significant investments. There is always a chance that the trend will go another way.

IT security is a set of cybersecurity strategies that prevents unauthorized access to organizational assets such as computers, networks, and data. It maintains the integrity and confidentiality of sensitive information, blocking the access of sophisticated hackers. IT security includes Network security, Internet security, Endpoint security, Cloud security, and Application security.