Lesson 4B Objective Review

Which of the following can you use to view headlines and updates from your favorite Web sites without the need to open your Web browser or visit any Web sites? RSS and Atom Pop-up windows Pop-under windows Proxy servers

A Web feed is a data format for delivering Web content that is updated frequently, such as blog entries and news headlines. Web feed formats allow you to view headlines and updates from your favorite Web sites without the need to open your Web browser or visit any Web sites. The two popular feed formats are RSS (Really Simple Syndication, RDF Site Summary or Rich Site Summary) and Atom. RSS is the original family of Web feeds developed in the early-first decade of the 21st century. RSS 2.0 has the widest acceptance of any feed format. Atom is currently at version 1.0. Atom is a relatively recent development but is much more robust and feature-rich than RSS. Atom provides a formally structured, well-documented format that is designed solely for the syndication of entire news articles.

You want to be able to quickly view news headlines without the need to open your Web browser and visit any news Web sites. How can you accomplish your goal? Set up a rendering engine. Set up a browser cache. Set up a proxy server. Set up a Web feed.

A Web feed is a data format for delivering Web content that is updated frequently, such as blog entries and news headlines. Web feed formats allow you to view headlines and updates from your favorite Web sites without the need to open your Web browser or visit any Web sites. The two popular feed formats are RSS and Atom.

In reference to the elements of a Web browser, what is a sandbox? The part of the browser responsible for reading and processing programming languages Code that controls how the browser accesses a network A programming method that isolates a particular application or process An instruction from a running application that executes a particular task

A sandbox is a programming method that isolates a particular application or process. A sandbox is vital in secure Web browsing because it helps the browser keep information from being exposed or misused. Sandboxing also helps ensure a stable browser; if one sandboxed process or plug-in malfunctions, the browser can still function properly, rather than experience a crash that results in loss of data.

What is the term for the part of a browser responsible for reading and processing programming languages? Interpreter Thread Rendering engine Sandbox

An interpreter is the part of the browser responsible for reading and processing programming languages. A browser often has several interpreters installed by default. Common browser interpreters include those for JavaScript and Java.

You have registered for an e-learning course and are ready to begin. However, when you access the e-learning course page as directed, you find that you cannot log in because the authentication window will not launch. The most likely cause of this problem is that: you have enabled pop-up blocking software in your operating system. you have enabled pop-up blocking software in your browser. you have recently cleared your browser's history file. you have recently cleared your browser's cookie cache.

If the authentication window will not launch, then the most likely problem is that you have enabled pop-up blocking software in your browser. Authentication provided in its own window is created as a pop-up. Pop-up blockers are a valued security feature, but they can sometimes cause problems.

You work for your company's IT department diagnosing and servicing the employees' workstations. A user complains that since she has been conducting a lot of research online, performance is slowing. You increase the size of her browser cache. Why might performance slow if the browser cache is too small? Because it will take longer to complete cache maintenance tasks when the user quits the browser Because a small cache size may slow other computer processes, such as disk defragmentation and virus scans Because the user may spend a lot of time waiting while pages download from the server Because the browser must search through possibly tens of thousands of cached files to locate a specific page

If the browser cache is too small, the user will sacrifice performance because he or she will spend a lot of time waiting while pages download from the server. Increasing the size of the browser cache can improve performance while browsing, but if the cache is too large, it may slow performance because the browser must search though possibly tens of thousands of cached files to locate a specific page. A cache that is too large may also slow other computer processes. For example, disk defragmentation and virus scans can take a very long time on a large hard disk, especially if the disk is full of cached Internet files. Also, when you quit Firefox, the browser performs cache maintenance. The larger the size of the cache, the longer it takes to complete the maintenance tasks.

How does a proxy server protect a corporate network from unwanted Internet activity? A proxy server runs only the corporate extranet. A proxy server restricts users by requiring a user name and password for every transmission. A proxy server replaces the network IP address with another, contingent address. A proxy server runs only the corporate intranet.

In a network setting, a proxy server replaces the network IP address with another, contingent address. This process effectively hides the actual IP address from the rest of the Internet, thereby protecting the entire network.

You have activated pop-up blockers in your Web browser to prevent pop-up windows from continually interrupting your browsing experience. What could be an unintended consequence of this action? You may not be able to set up Web feeds when needed to access news headlines. You may not be able to clear your browser's cache. You may not be able to clear your browser's rendering engine. You may not be able to enter logon information when needed to access a site.

Pop-up windows are small browser windows that appear in front of the browser window you are viewing. Pop-up windows display on their own, and remain open until you click an option inside or close them. Because pop-up windows can be annoying, pop-up blockers are included in most browsers. Although blocking pop-up and pop-under windows may seem like a great idea, keep in mind that it may prevent vital features of some Web sites (such as logon windows) from displaying.

What is the purpose of the History folder? It allows you to view a Web page's source code. It allows you to perform a keyword search. It allows you easy access to previously viewed Web pages. It allows you to design a Web page.

The History folder allows easy access to previously viewed Web pages. It stores the URLs of sites you have accessed within a defined period of time. The History folder is a convenient tool for revisiting Web sites, especially if you cannot remember the exact URL.

Which of the following improves the speed of your browser because it allows you to view previously accessed Web pages without having to request them from the server again? The History folder Pop-up windows The browser cache The Favorites folder

The browser cache is a folder on your hard drive that stores downloaded files (such as Web pages, images, fonts, etc.). The cache improves the performance (speed) of your browser because it allows you to view previously accessed Web pages without having to request them from the server again. Most Web browsers allow you to clear the cache, which frees hard drive space and removes evidence of sites you have visited.

Where are downloaded files (such as Web pages, images, fonts, etc.) saved on a computer? The History folder The desktop The hard drive The browser

The hard drive contains a browser cache folder that stores downloaded files (such as Web pages, images, fonts, etc.).

What is the term for the part of a browser responsible for reading a Web page and presenting it to an end user? Rendering engine Window Sandbox Interpreter

The rendering engine is the part of the browser responsible for reading the Web page and presenting it to an end user. It has the ability to read, parse and represent HTML, images and other tools. Examples of rendering engines include Mozilla's Gecko, Opera Software's Presto and the KDE project's KHTML engine, which is used in Linux systems as well as Apple's Safari Web browser.

What is the common term for the default page that appears when a browser is initially opened? The welcome page The bookmarks page The favorites page The home page

When you install and open a browser, the first Web page that appears is the default browser home page. In Internet Explorer, the default home page is the MSN page. In Firefox, the default home page is the Mozilla Firefox Start page.

You decide to increase the size of the browser cache and change the frequency with which your Web browser compares cached pages to those on the Web. What problem are you experiencing that would cause you to perform these actions? Your computer is low on disk space. Your computer has an inability to store authentication information. Your computer has a low-resolution monitor. Your computer has a slow connection.

When your Web browser fails to respond in a satisfactory manner, there are several techniques you can use to troubleshoot Internet client problems. To improve the performance of computers with slow connections, you can increase the size of the browser cache and change the frequency with which your browser compares cached pages to those on the Web.