Computer Systems Quiz

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Computer Systems Quiz

Computer Systems Quiz

Differences between first-party cookies and third-party cookies

            A cookie refers to small script of data, which are placed on hard drives of ones computers by the servers of the sites that one visits. The role of placing such a cookie is to allow specific browsers or computer combinations to be recognized in instances when an individual; returns to such sites. In all of the cookies, there exists an owner who tells where these scripts emanate or who they belong to. Such owners are the domain and the cookies specify them. The main difference between the third party and the first party cookies arises since the first party cookies are easily identifiable by the domain name appearing on the browser address bar while third party cookies are not set by the domain name appearing on the address bar of a browser.

In the context of browsers, when an individual is surfing a specific website, which they have specified, on the address bar, a HTTP request is received from the domain to the browser. The browser treats such requests as first parties and they offered a high level of trust. In the contexts of third parties, a request is received from the domain name, which is not the principal domain to the website. Surfing such third party data may involve restrictions depending on the settings that are applied on the browsers (Miller, 2012).

What is a Firewall and how does it work

            As Hay, Giannoulis & Hay (2009) notes firewalls are programs or hardware components, which are created to create barriers for hackers, worms, viruses that may seek to gain access computer systems from the internet. Firewalls often act as filters between the computers or the networks to the internet. Most organizations and individuals that use large systems prevent their computer systems by creating configuration on the specific data they would like to get in and out of their computers. How a firewalls works can best be explained by the physical firewalls or barriers erected to prevent any further spreading of the fire from the set wall.

Organizations today apply complex firewall systems, which prevent information from either moving in or out. Firewalls can be created in the outside interface of a company’s network to prevent employees in an organization from sending emails with sensitive data outside the company. On the inbound, computers can be programmed from accessing specific sites such as the social platforms hence limiting the sites which may be vulnerable to them. Through firewalls, an individual can determine that only data that meets a specific criterion can pass through the network. Such specification minimizes chances of malware gaining access to ones data.

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